TWI226320B - Slow effective potassium fertilizer and method thereof - Google Patents

Abstract

The invention provides a method for producing a slow effective potassium fertilizer and the product thereof, which produces the slow effective potassium fertilizer efficiently and whose product has superior characteristics as the fertilizer. The raw melts are prepared, which has the components at least one or two selected from the group consisting of MgO, Al2O3, FetO. And the raw melts contain CaO and SiO2, wherein the value of CaO/SiO2 is 0.2 <= CaO/SiO2 <= 1.0. Furthermore, potassium raw materials are added to the raw melts. The method comprises the ST1 step of melting the potassium raw material and mixing with the raw melts; the ST2 step of cooling and solidificating the melting and mixing treated melts at 0.5 DEG C/min or more under the condition of CaO/SiO2 < 0.5 and at 5 DEG C/min or more under the condition of CaO/SiO2 >= 0.5 within the range of 1000 DEG C to 800 DEG C; and the ST3 step of pulverizing the solidificated material generated. As the result, the slow effective potassium fertilizer is produced.

Description

1226320 V. Description of the invention (1) Field of j branch The present invention relates to a method for manufacturing slow-acting potassium fertilizer, JL technology and friendly potassium fertilizer. Fertilizers are indispensable for plant development. Acids and potassium are the three main components, and they are absorbed successively in small amounts by the roots of nitrogen and phosphorus. Fake slugs can be planted among these fertilizers. 'As potassium fertilizers for potassium, most of them use potassium sulfate, because both are Ak, ~ cong, slug', potassium lice or A is hydroponic. There are many lost parts, and because of the gas of S or lycoic acid, it is blocked by your trip, it is the gate ^ acidification 'causes fertilizer to plants 12: 1, so it does not contain chlorine or sulfuric acid, etc. For salt, fertilizer can be used as a fertilizer for growing crops within a period of time, that is, slowly in the soil, and the fertilizer effect can last for a long period of time (the slow-acting potassium fertilizer). .

Conventionally, as a slow-acting potassium fertilizer, a citric acid-soluble potassium fertilizer that is hardly soluble in water and soluble in a citric acid aqueous solution secreted by the roots of plants is used. Such a citric acid-soluble potassium fertilizer can prevent loss due to irrigation water, and at the same time, as the amount of citric acid secreted from the root increases, its absorption also increases. Therefore, it is possible to exert ideal retarding effect. As a method for producing a citric acid-soluble potassium fertilizer having such slow-acting properties, Japanese Patent Application Laid-Open No. 60-1 27286 discloses the use of silica, blast furnace furnaces / smelters, nickel slag, backfill slag, andesite, etc. A method of mixing powder with a raw material such as carbonic acid and heating the mixture to make it melt. Further, in Japanese Patent Application Laid-Open No. 55-5 1 785, it is disclosed that potassium carbonate, caustic potassium, etc.

1226320

$ 1 Unload the raw material into the fly ash (y ash) collected by the lime thermal power generation dust collection device, and then add micronized carbon for granulation, and use this granulated material kf I to make potassium raw materials and fly Method for reacting ash composition. ^ In the above-mentioned conventional techniques, any one of the prepared materials needs to be melted or burned in order to make the prepared materials clean, and in order to add the required ..., i requires a large amount of heat, and the processing requires a long time Time is the problem. "This is the manufacturing method of slow-acting potash fertilizer to solve these problems." In JP-A 9-2 7 8 5 6 8, it was revealed that the addition and dissolution of molten pig iron was solved. A method of melting the potassium raw material and fusing it with molten slag, and then cooling and solidifying the ^ 1 melt. In this technique, since the potassium raw material ^ σ is charged into the slag that has already been melted, it is the same as that described in JP 6-7 12 12286 and JP 55-5 1 78 5 ^ vv; &τ; The heat required for heating is small and economical, and can be processed for a short time. However, the technology disclosed in this Japanese Patent Application Laid-Open No. 9-2785 68 has advantages as described above, Only the conditions for how to efficiently produce a slow-acting potassium fertilizer with desired characteristics have not been revealed. In addition, in this technique, the molten material of the molten slag, which is fused with Zhong 1 material on the molten pig iron, is cooled and solidified. The granulation is performed by the wind crushing method or the water crushing method. The use of potent potassium fertilizer has been tried. However, due to the irregular shape of the particles and the presence of angular particles, the handling and handling are not good. Therefore, no = fully meets the need for labor saving, and is intended to be used in recent times. Fertilizer application is also difficult. In order to solve such an unfavorable situation, pulverization of granular materials has been considered ’. However, the fertilizer is easy to scatter when the pulverized material is fertilized, and the fertilizer is fertilized after fertilization.

1226320 Five Description of the Invention (3) ------------- It will be lost due to rain ☆ Water loss a, or fertilizer covering the ground surface, there will be obstacles to the health and ventilation of the ground #. The purpose of the method is to provide a slow-acting potash fertilizer with excellent fertilizer characteristics and efficient production of the fertilizer. It also provides the slow-acting and effective slow-acting potash fertilizer that can be used to make fertilization-free access, water loss due to rainwater, and impede the water permeability and air permeability of the ground. The production method of potash fertilizer is for the purpose of inefficient potash fertilizer. It is clear that the above-mentioned object is achieved. In the first invention group, the following three hairs are provided (1)-A method for producing a slow-acting and potent potassium fertilizer in the following steps, which is characterized by: The step of the object is to melt the raw material containing Ca0 and "02 containing ingredients selected from ¥, Α12〇3, Ι〇 melt, six Λ 胄, or two or more kinds: add potassium source bucket to make this potassium raw material Melt, and the value of the raw material A = Ca〇 / S102 is 0. hCa0 / Si is a melt of 10 〇 10 (Tn t mouthing step, in order to melt the above-mentioned melt-treated melt, from: 〇c To 8G (rc ^ temperature domain, # ㈤5 Hours: cold knife is solidified '; ed./Sl ^ · 5 hours, the pulverization step is performed at a speed of 5 minutes or more, which is to pulverize the generated solid. Next (10) Two methods for producing slow-acting bell fertilizers, which are characterized by the following steps: W. Wu has a step of forming a molten material.

91102894.ptd Page 9 1226320 Five descriptions of the invention (4) One or two or more of the raw materials of free MgO, Al203, Fet〇 and CaO and Si〇2, melt, and raw materials The melt was fused, and the potassium raw material was added to make this potassium raw material Ca0 / Si0 $ 1.0. ; The value of forming Ca0 / Si〇2 is 0.2- the cooling and solidifying step, in order to remove the molten material from the melting process of Yan Sheng Lin Zhi from 100 ° C to 800 ° C, and take it at. . Above 1 minute / minute, when Ca0 / S? 0 \ in 'Shidan CaO / Si〇2 <0.5, cooling and solidification in 0.5 lines; 2 &gt; · 5 hours, at 5 ° C / minute or more (: broken step 2. The crushed solidified product is crushed. (3) —The following steps for the production of a slow-acting potassium fertilizer: The method is characterized in that it has the steps of adding potassium raw materials, # force—iron, and molten pig iron. == 2 performers in a smelting and melting pig iron holding container;. The step of melting the desilication slag generated to produce a molten substance is to form a 2 g / Sl_ · peach in the temperature range of t Ca0 / Sl02 &lt; 05 o'clock at the factory from c to m CaO / S i 02 g 0.5 b temple, above 50 c / min, above the ulcer knife, when the step is broken, it will generate According to the above-mentioned structure, a specific, broad one that contains CaO and SiO2: Tianli II, smelt this potassium raw material to make it dazzle with the raw material: melt two e, and then The fusion-processed molten material is cooled and solidified, and the plutonium compound is crushed to produce a slow-acting potassium fertilizer. Here, the solid system will be made from molten raw materials 91102894.ptd Page 10 Combine the processed melt to cool it and smash the solidified product to produce 1226320. 5. Description of the invention (5) The basicity of the molten material formed by the fusion of unloaded raw materials is specified as 0.2 $ = 〇 / Si〇2 $ i 〇, and by the range from 10001 to 8000, the Japanese C, ao / Si. 0 〆 0, 0.5, 0.5 t / min or more, when Ca0 /Si〇2^〇.5 ^ 乂 5 + C / min or more to cool and solidify the smelt, because P can be made water-cooled | ± potassium compounds, and the citric acid-soluble potassium compounds can be efficiently generated. Slow-acting potash fertilizer with excellent fertilizer properties is produced in the field. „Invention group t 'provides the following three inventions: Bottom = Manufacturing method of various kinds of effective bell fertilizer, which is characterized by having a step of α1Π! Π fusion In order to contain a material selected from the group consisting of 、, 〇, and melt, potassium is added, and the ingredients on the dry surface are fused with the raw material melt of S102; and 4, the potassium raw material is melted to melt and cool with the raw material. Pulverization step, granulation step, for the resulting pulverized material; Ershi (2) — a kind of slow-acting potassium fertilizer &quot; 沬. Sticky, ·, = agent to make The steps are described as follows: The step of fused with the raw material melt contains a material selected from the group consisting of Ca0, Mg0, and M0 in the presence of a molten metal, and a raw material of Si0. Melt 2 and melt 3 things, and melt one or two of the families in the group 'Make it with the original ㈣-add the bell material' to cool down this solidification step, and take out the melt from the melted _ Make it

1226320 V. Description of the invention (6) However, it is solidified; the crushing step ′ crushes the solidified product produced; (3) A method for producing a slow-acting potassium fertilizer, which is characterized by the following steps: 〃 Preparation: the step of slanting the raw materials' is contained in the treatment of the stone removal process = also the removal of pig iron here Performer in the desmelted pig iron storage container generated during the dream processing;-the step of melting the desilication slag and the potassium raw material; the step of cooling and solidifying the slag generated by the fusion; the step of pulverizing the solidified product; Adding a binder to the pulverized product to granulate it. V is a material containing a material selected from the group consisting of CaO, MgO, A1201, (typically dazzled with Si02), which is melted with the raw material, and the unloaded material is smelted, so that the raw material is smelted to form potassium. Chemicals & materials, due to the fusion of potassium raw materials due to: excellent thermal economy and can be processed in a short time, and fertilization occurs; fly: powder plus binder for granulation, so no air permeability The loss of rainwater and the obstruction of the ground ’s water permeability invite good access and handling. Because it is regular and spherical, there are no corners. ^ 3) 2nd 2 In the Ming group, the following two inventions are provided: Acid God The manufacturing method of material-based unloading fertilizer is characterized in that it is based on adding silicon to the silicon tube,% k 4, uy 226320 ------ Description of the invention (7) Yueba. (2) —A kind of slow-acting potassium fertilizer, which is characterized by adding a binder to the raw material of potassium silicate and granulating it. According to the above-mentioned structure, since a binding agent is added to the potassium silicate raw material and the plate is used, a slow-acting potassium fertilizer having the characteristics described below can be obtained, which does not scatter during the fertilization, is caused by the loss of rain, and hinders the ground. In the case of water permeability and air permeability, and because it is regular and spherical, there are no edges and corners, so it is easy to handle and handle. In the group, the lignin, which is used as a binder for easy particle size, is suitable for this purpose, and the hardness of the particles is taken between and dispersed in the rainwater and soil. In this regard, starch is particularly preferred. That is to say, the above-mentioned pulverized material will be granulated by subsequent drying, and the degree, soil and water can be slightly affected by the soil. Therefore, as a solubilizing compound, crushed sand and spider 5 can be added. Not to mention the moisture content of 5 during processing. From the viewpoint of hardening, it is possible to obtain 5 granules of Zhongshan Peptide which can be decomposed in the mountains. When the above 2nd invention group and the 3rd invention were properly granulated to obtain the capacity, it was found that starch, magnesium sulfate and the slow-acting potassium obtained through granulation were manufactured and used in circulation. As for fertilization, it must not be destroyed, and the granular fertilizer must be disintegrated at an appropriate rate and can be divided into the above-mentioned binders, especially the powder will gelatinize by adding moisture, and then using this property can be used. It is relatively easy to make granules excellent in granulation efficiency and sufficiently hard and good. In addition, starch + t has a negative effect on plants and the environment, and starch is the best. In the case of citric acid using molten slag as a raw material ’If the S i 〇2 component is insufficient

! 226320 Fifth, the description of the invention (8) Coal ash, garbage incineration ash, etc. Adjust the composition. (3) As for the material of 5102, there are unloaded minerals such as potassium carbonate, catty salt, and unloaded feldspar. Liu Guang Qi Shu, Su Shu Su and other rapes, g. Refer to the intellectuals. VIII. In addition, the raw materials, such as Shilu 酉 Jiu potassium, will be added to the high temperature: 7: 1 歹 M is between the stone melt = material melt Reaction. However, unloading the raw material makes the potassium sulfate in the melt, and it is better to think about the form of Jiba f. Sugawara Aicheng is easy to thermally decompose in the present invention. 'As a result of the 4th day, _ citric acid xuanzhang 4 Xi several people H &quot; The reaction between the original 枓 can cause it to produce lemon, 杳, for A ^ The molten material of the raw material connected to the S object can be representatively exemplified by the molten slag ', slag, and molten slag', such as the blast furnace discharge and turn ^^ discharged during the steelmaking. These crushes, in addition to containing M and R 14 components, are in a molten state at the time of discharge. Eight solutions ": potassium slag in the state is added, the potassium raw material will immediately melt,: A calendar: lemon Generation reaction of acid-soluble potassium compounds. Especially for the melt; check, it is better to use desilication slag produced by #f ^ ^% using smelting pig iron discharged from the blast furnace. Desilication slag contains a large amount of SiO2, By adding ㈣ ϋ and adding materials, only the auxiliary component adjustment can be used to generate a citrate bell compound. And 'immediately after or after the treatment of stone removal Λ, _ = potassium fertilizer is added to the silicon removal residue, then It is more economical to generate osmium acid-soluble potassium compounds in existing iron-making equipment. Furthermore, in the present invention,

FetO is a general term for iron oxides, and Fe0 and Y are included therein. The best shape to use for the invention

1226320

Hereinafter, embodiments of the present invention will be specifically described. "Sexual fat" is produced by the following steps to produce a slow-acting A10, P / 〇Ί &quot; &quot; combined treatment step ST1, which is to contain two or more ingredients selected from the group consisting of ¥, ¥ 2, and ¥ 2. ㈤, 融 and 融, the eyebrow said: 忮 ΐ Potassium raw material 'Make this potassium raw material melt value of 0.' 2 (reaction) 'W The test degree Ca0 / Si〇2 obtained is &amp; 8 Lu 1 0 2 $ 1. 0 melt; cooling and solidifying step ST2,

1 〇〇〇4 ～ 8δ〇〇 = Λ smelted smelt in step ST1, in the Zi / Yao Yiduo domain, when Ca〇 / Si〇2 &lt; 0.5, at 0.5 ° C π At Λ a〇 / Si〇220.5, two steps are carried out at a rate of 5 ° C / min or more, and the crushing step ST3 is used to melt the generated solid powder through this step: processing step ST1 +, The alkalinity Ca0 / Si〇2 value of the molten material in which the raw material melt and the potassium raw material are fused is set to a range of 0.2 gCa〇 / si〇2 $?, The reason is that if the content is less than 0, ㈤ It is so small that the slag :: becomes distorted. If it exceeds I 0 ', the water-soluble potassium compound increases and cannot become a slow-acting potassium fertilizer. Preferred is 0.3 $ Ca〇 / SiO2 S0.7. In addition to the raw material melt and potassium raw materials, a modifier can be added to adjust the alkalinity. Also, in the cooling and solidifying step ST2, the cooling rate in the temperature range from 丨 00t to 800,00 ° is set to be when (^ 〇 / § 丨 〇2 &lt; 〇05, 050c In the case of Ca0 / Si02 ^ 0 · 5, at 5 ° c / min or more, where j is *, the speed in the right cold part is lower than this, and the water-soluble potassium compound crystals are easily precipitated.

1226320 V. Description of the invention (10)-It is difficult to obtain slow-acting potassium fertilizer. Especially when CaO / Si〇2 ^ 0.5, the crystals are easy to form 'and a faster cooling rate is necessary. In this way, the range of 800 ~ 1 000 t specified in ^ 2 is the temperature at which crystals are easy to form. In the first embodiment, the potassium slag is melted and added to the slag-like raw material to melt the unloaded raw material. It is fused with the raw material melt to have excellent thermal economy for potassium compounds and can be processed in a short period of time. Therefore, the ratio of w-κϋsoluble unloading (W-K2〇) to full unloading (T_K2〇) (water-soluble rate, and the last seven is the slow-acting potassium fertilizer which is the second consistent application form of Benmemin). The manufacturing method of this embodiment is based on the remaining steps

CaO is a fusion processing step ST1, for

One or two or more ingredients in the SiO2 and Fe2 ° 3 clusters and M / one raw material melt, added to the potassium raw material, and melted in the ith two raw material melt components Reaction; cooling and solidifying step ST2, chemistry; Iΐ lithography step ST1 ', the fusion-processed molten material is cooled to solidify ST4, ^ + / step 373', the resulting solidified material is pulverized; the granulation step is in the second step A binder is added to each of the pulverized materials for granulation. Melt addition / potassium application // medium 'Because it melts and melts slag-like raw materials to form potassium in this way, and' melts this potassium raw material and fuses with the raw material melt to form a δ substance ', it has excellent thermal economy and Feasible for short time processing, and 91102894.ptd Page 16 1226320

V. Description of the invention (11) Because the pulverized material is granulated by adding a binder for granulation, it does not occur in 4 rounds, scattering during fertilization, loss of rain due to rain, and obstruction of the water permeability of the ground. Because it is regular and spherical, it has no edges and is easy to handle and handle. 'In the fusion processing step ST1, the alkalinity in the melt is not specifically defined, but it is preferably set to 0.2'Ca' / Si〇2 ^ 〇 as in the i-th embodiment, and the 0 · 3 SCa0 / Si02 $ 〇 · γ is better. ~ In addition, in the cooling and solidifying step ST2, there is no particular limitation on the cooling rate. As in the first embodiment, in the temperature range from 100 t to 800 t, when Ca0 / Si 〇2 &lt; 0.5 is set to 0.5 ° C / min or more, and s Ca0 / Si02-0.5 is set to 50 ° C / min or more. In any of the above-mentioned first and second embodiments, the particle diameter of the potassium raw material added to the smelting ^ is preferably 25 mm. If it is less than 1mm, the original w is added and scattered. If it exceeds 25mm, the undissolved and remaining K2O is stored as a single solution, causing the increase of water-soluble potassium (w-K2O). In addition, the supply of potassium raw materials was I. If the supply rate of the potassium raw material is too small, the production of κ2 will be reduced; In addition, the total unloading (T-K2o) is 30% by mass% == yes If it exceeds 30%, the proportion of W-K20 increases. : In the above-mentioned fusion process step paste and ST1 ', in a container suitable for the raw material, when potassium raw material is added to the molten material of the raw material, a component adjusting agent may be added to adjust the composition of the molten material. And, if necessary, the heat source for melting the potassium raw material can be strengthened. 'Necessary FIG. 3 is a diagram showing an example of steps for implementing the above-mentioned fusion processing steps STi and §τι. In the figure, 10 is the reaction tank ’50 is steel refining H =

91102894.ptd Page 17 1226320 V. Original description of the slag of the invention (12) becomes a ductable gas 1 〇, inserted into a blowing pipe for stirring the potassium raw material, insert 15, 16, π to supply oxygen Or _ raw material funnel, and so on, and if necessary, the constituent pipe 17 melts the material, and the connecting door 13 penetrates the raw material melting cannula 17 and contains an oxygen funnel 21 and a funnel 2 0 It can also be used as a powder. The reaction tank 10 can be hermetically closed by the cover 11 and the pressure state in the tank can be adjusted by setting the gas discharge port 12 to the exhaust duct. In addition, various kinds of lances are inserted into the reaction tank cover 11. Insert the tube with 50 melts and connect the nitrogen line. Insertion tube j 5 Introduction 'Insertion tube 16 is an insertion tube for blowing powder of component adjusting agent, and an insertion tube for blowing powder coke, and the insertion tube is connected to a nitrogen line. The insertion tube 8 is an insertion tube for gas (insert tube for oxygen). 20 is a funnel for adjusting the composition, 22 is a powder coke leak ", 21, 22 are equipped with feeders 23, 24, 25, respectively. They are constructed by the funnel 21, feeder 2, 4, and insertion tube 16. The system 'and the funnel 2 2, the feeder 2 5, insert the coke supply system and oxygen supply system.

In the above-mentioned installation, first, the raw material melt 50 is charged into the reaction tank 10 f 'to measure the loading amount. Then, a set amount of the potassium raw material corresponding to the 50-input amount of the raw material melt was calculated and stored in the funnel 20. A set amount of the component adjuster is calculated corresponding to the composition of the raw material melt 50 and its added amount, and stored in the funnel 21. Then, nitrogen is blown in from the insertion tube 14 to stir the raw material melt 50, and simultaneously start the feeder 23 and the feeder 2 4 'to release the potassium raw material in the funnel 20 and the component adjusting agent in the funnel 21, Nitrogen is used for air flow transportation, and blown into the raw material melt 50 from the insertion tube 15 and the insertion tube 16. The blown potassium raw material will melt and decompose and dissolve into the raw material dazzling melt 50. In addition, the blowing ingredient adjustment agent will melt and melt into the original

91102894.ptd Page 18 1226320 i. Description of the invention (13) Material melt 50. At this time, the viscosity is greatly reduced through the viscosity, and therefore, it becomes easier as the substance is stirred. In the case that the raw materials and composition of the straw are greatly reduced, the feeding of charcoal must be started. The powder coke can be fed into the raw material melt 50 with nitrogen. The self-inserting tube 18 is used to burn oxygen or oxygen-containing re-material melt 50. Keep its temperature. The temperature of the powder coke and oxygen is maintained at a set temperature and supplied. Since the potassium raw material is evaporated, it is effective before the powder raw material is added. Even if the set amount of potassium raw material is continued and the self-insertion tube 14 is stirred for a short time, the reaction tank 10 does not discharge the molten material after the fusion treatment, and the exhaust gas is sent to the exhaust gas. In addition, in the case of adjusting the composition with the potassium raw material, it is not necessary to install and 'if the potassium raw material and the ingredients are adjusted to reduce the temperature, only due to the change, the melting point of the molten material will be dissolved by the potassium raw material'. The blowing amount of the potassium raw material of the molten material is increased, and the temperature regulator 25 of the molten material 50 caused by the melt conditioner is used to convey the powder in the funnel 22 by air flow, and the powder coke is blown from the insertion tube. At the same time as the blowing, the blowing of the gas also started, and the powder coke was burned to heat the molten material. The gas or oxygen-containing gas can be adjusted in the melting range, and the powder will be adjusted on the side. The heating period of coke and c reaction such as coke and oxygen is set after the completion of the potassium component adjuster, that is, the state where the molten material of the blowing gas is stirred and the unrefined material exists, and then sent to Cooling step. After the other body treatment device is purified, it is not necessary to add the raw material melt into the component adjusting agent. If the filler is charged, the composition of the raw material melt 50 is reduced by the dissolution of the raw material ’. Therefore, the loading amount of the potassium raw material is reduced.

1226320 — 丨 丨 丨 V. Description of the invention (14) In the case of / li, the melt is therefore the ratio of the amount of potassium in the raw material ^ = a molten state that is sufficient for stirring.仃 In the case of powdered coke and oxygen or containing oxygen, there are also cases where raw materials, ingredient modifiers and powders are not applied; = =; In addition, the potassium rolling flow is blown into the raw material melt 50, and the σ method is not limited to adding half of the raw material melt 50 to the upper part of 10, and may also be sent from the reaction tank to the raw material melt 50. In addition, it is also possible to use 1 or 2 ′ because only the insertion tube 18 is not immersed in the smelting and melting material, ff, and burned. Therefore, oxygen may be sent to the raw material melt 50. 2. Blowing of goat milk or oxygen-containing gas The above-mentioned cooling and solidifying steps ST2 and ST2 are not particularly limited. The method of cooling and solidifying the object is the fusion process. For example, the method of blowing the melt at the mouth to high-pressure air for re-pairing and granulation at the same time (wind crushing; cooling by cooling and dispersing), and simultaneously reducing its flying description The melting slag is placed in the air to cool and solidify, etc.), the last one, for example, is sent out from the apparatus of FIG. 3 and supplied to the cold cow fusion treatment, and then flows into the hopper, from: High-pressure air is blown through the melt. Next, the dazzling melt == of Scatter ’is granulated while being cooled. 2. Luoxiayu will be crushed in steps s T3 and ST3, and the crushing method is not particularly limited. Any method can be used, for example, jaw crusher, rod crusher (r〇d miii), mill), impeller breaker, etc. The granulation method in the granulation step ST4 is also not particularly limited, and can be used

91102894.ptd Page 20 1226320 V. Description of the invention (15) f "The granulation method, for example, the pulverized material obtained through the above pulverization step and the binder are mixed with a mixer, and sprayed with an appropriate amount of water on one side At the same time, granulation is performed with a granulator and then dried. As the granulator, generally used ones such as a turntable granulator, a rotary cylinder, and a granulator can be used. It is preferable to use a method that directly returns or pulverizes those who have not entered the set particle size range after granulation. After processing, it is sent back to the mixer as a part of the raw material for reuse by the continuous granulation method.

Fig. 4 is a diagram showing an example of an apparatus for implementing the granulation step lamp 4 described above. In this device, the pulverized material 9 obtained through the above-mentioned pulverizing step is charged into a hopper 91 through a shovel loader or the like, and the measured pulverized material 90 is supplied from the hopper 91 to the conveyor 92 through a conveyor belt 92. In a drum-type rotary granulator 93. The adhesive 94 stored in the container 95 is supplied to the drum-type rotary granulator 9 3 according to a set amount, and the pulverized material 90 and the binder 9 4 can be mixed by the rotation of the drum-type rotary granulator 9 3 to allow mixing. Perform granulation. Thereafter, the granulated product is dried in a dryer 96, supplied to a sieve 98 through a lifter 97, and sieved, and further cooled in a cooler 99 to obtain a granulated fertilizer. It can also be sieved after cooling in a cooler to make granulated fertilizer.

Fig. 5 is a diagram showing another example of an apparatus for performing the granulation step ST4. In this device, the pulverized material 1 0 0 obtained through the above pulverizing step is charged into the hopper 1 0 1, and the measured pulverized material 1 0 0 is from the hopper 1 0 1 into the mixer 10 4. Also, the binder 10 stored in the container 103 was charged into the mixer 104 in a set amount. Next, 'the pulverized material 1 0 0 in the mixer 104 is mixed with the binder 1 102, and this mixture is supplied to the disc-type granulator 1 105, and is produced in the disc-type granulator 1 105. grain. Will be granulated by the disc granulator 105

91102894.ptd Page 21 1226320 V. Description of the invention (16) Manufacturing J = placed on the conveyor 106, then dried with 3 inorganic 96 in the same way as the device of FIG. 4, and supplied to the sieve μ through the elevator 97 for sieving Ran was cooled by a cooler 9 9 to make granulated fertilizer. There are no particular restrictions on the binder used in the granulation step. Phosphorus ^, ^ clay, bentonite, PVA, CMC, polyacrylic acid, molasses, wood flour, and mixtures thereof can be used, only granulation can be obtained. From the viewpoint of those who have easy-to-handle granularity, lignin and powder can be used alone, or at least two types can be used. Also, the hardness of the particles is in the manufacturing and circulation so that: until the fertilizer In the process of taking and processing, it must be unbreakable, and ϊ i = f rainwater and soil water must be able to disintegrate at an appropriate speed. It is better to go to the soil water. Taking into account the use of starch as a binder: gn * also,. Sweet potato, rice, etc. as raw materials to produce corn, tree, wheat, horse temple powder (the d-glucose bonded temple powder, its constituent ingredients The ratio of straight-chain glucose to branched-shaped straight-chained ones and branched branched flour (from d-corn, etc.) depends on the raw materials. Can be the original raw ":] more. Furthermore, 'as the processing hall of starch and other seed processing It can be used for those who have gelatinized properties after heat =, test, salt, and yeast. Regardless of the type, as long as the starch is added by adding water 2: It is a granulating adhesive: It is hardened, so it can contain Above ;: Gelatinization occurs, and drying it by n will cause the stone to oxidize and unload the raw materials, and it is easy to: soil; training of ground materials and raw materials', that is, efficient granulation. By using 91102894.ptd in this way, page 22 1226320 V. Description of the invention (17) It is known that as a binder, it can obtain granular slow-acting potassium fertilizer with sufficient hardness, good disintegration in soil and water, and starch. The microorganisms decompose, so it will not cause adverse effects on plants and the environment. In this way, the shape and particle size of the slow-acting potassium fertilizer obtained by granulation are preferably flat 3 grains and also 0.5-5 mm. The average particle diameter is Less than 0.5 minutes, it will be blown by the wind during fertilization, and its usability will be poor. If it exceeds 6 mm, it will be difficult to spread uniformly. The better particle size is 1 to 5 mm. Figure 6 ☆ shows the third implementation of the present invention The machine% chart of the manufacturer of the slow-acting potash fertilizer in the form. The application form is a fusion of raw materials and raw material molten materials such as molten slag in the presence of smelting metals. Basically, the following steps are used to produce a slow-acting potassium fertilizer, which is a fusion processing step. In the presence of a molten metal, a compound containing one or two or more ingredients selected from the group consisting of "0, 2 raw materials F" t〇2, and ⑽ and called molten added to potassium source #, so that The potassium raw material is melted and fused with the raw material 0.2 ^ (: = // knife 〇 (reaction \ to obtain a degree of testability (^ 〇 / with a value of 〇2 ~ 1 2 ^ 1 · 〇; fusion; fusion In the material separation step sti2, the material is fused and the fusion is formed by "melt and = two-knife apart", and the cold-melting and solidifying step ST13 is to separate the separated melt from 1 00, ° C to 800 t: When Ca0 / Si〇2 &lt; 0.5 '/ min or more, when Ca0 / Si〇2-0.5, it is produced at 1 of 5t: / min or more, partial solidification; and pulverization step ST1 4, After going through this step diagram, it is crushed again. In addition, in the fusion processing step ST11, in addition to the curing material of the dagger, an adjusting agent for adjusting the alkalinity can also be added ^ ^ ^ and the potassium source Figure 7 is a view showing the fourth embodiment of the present invention Effect of the manufacturer of the second gangbang 91102894.ptd page 23 1 1226320 5. Description of the invention (18) method flow chart. In the fourth embodiment, in the same manner as in the third embodiment, the unloading of raw materials and the shape in the presence of the smelting metal is the same as that of the 'fusion fusion', basically 'the following steps === enter the fertilizer' It is a fusion processing step ST11 '' under molten gold 'for adding a raw material melt containing CaO, Mg0, Al203, Fe, two or more ingredients, and 3102 as raw materials. Smelting and melting this potassium raw material and the ingredients of the raw material smelting mixture: and: inverse: [K ', so that the potassium raw material and the raw material melt are melted: raw: of; the molten metal is separated; cooling and solidifying step sm ,; = Γ 化; pulverization step _4, through this step to the granulation step ST15, the pulverized pulverized material = combined processing step ST11, in which there is no particularly good test for the melt , Η is 0 · 2 · 0 / just like the third embodiment. 02. 』Is a nephew, but 0 · 3 SCa0 / Si02 SO · 7 is better. Temperature = secreted in the cooling and solidifying step ST13, about from 1000. From 〇 to 800, there is no particular limitation on the speed of the cold section, just like in the third embodiment, when ^ CaO / SiO2 &lt; 0.5, it will be above 0.05 points, when ㈤ / 叫 ~, It is better to carry out at a speed of 5 ° C / min or more. Any of the third and fourth embodiments of the bear ^ is the same as the first and second embodiments. The particle size of the potassium raw material to be added to the smelting raw material is set to 2 and the supply rate of the potassium raw material is preferably 1 kg / part per ton of molten metal. If it is less than 1 kg / min per 1 ton of molten metal, the yield of K2O tends to decrease. In addition, the total K2O (T_K2O) is expressed as 30% by mass%.

91102894.ptd Page 24

1226320 V. Description of the invention (19) The following is preferred. As in the third embodiment and the fourth embodiment, when the additives such as the raw material molten potassium and the raw material are fused, the presence of the molten metal will increase the amount of the potassium raw material and the component adjusting agent. In the case of molten metal, it can become a hot replenishment source, which can suppress the temperature drop of the molten material as much as possible, and cause the fusion reaction to occur while ensuring the necessary temperature. The above-mentioned fusion processing steps ST11 &amp; ST11 are typically performed in a state where the raw material melt floats on the molten metal packed in an appropriate container, and the potassium f is fused to the raw material melt. If necessary, a component adjusting agent may be added to adjust the composition of the raw material melt. In addition, during the mixing of the above raw materials, when carbon materials such as powder coke are added, oxygen or a gas containing oxygen is also supplied to burn the carbon material, and the potassium raw material and the component adjusting agent are heated as necessary for its melting and melting. Reinforced by the heat. In the above-mentioned molten material separation steps ST1 2 and ST 12, respectively, after the fusion processing steps ST11 and ST11 ′ are completed, the fusion melt can be separated from the molten metal by, for example, discharging the fusion melt from the container. . On the other hand, the molten metal separated from the fusion melt can be sent to the next step or used in the next fusion treatment while remaining in the container.

FIG. 8 is a diagram showing an example of an apparatus for performing the above-mentioned fusion processing steps ST1HST11,) and the fusion separation step ST12 (ST12,). Parts in FIG. 8 that are the same as those in FIG. 3 are given the same components and their descriptions are omitted. In this example, 'the raw material molten material 50 and molten metal 51 of molten slag and the like were charged into the reaction tank 10. Insertion tube set in the reaction tank 10, that is, the seeding tube 14 for stirring the internal grains 4. Insertion tube 1 for the blowing of Shu raw materials 5. Composition adjusting agent

91102894.ptd Page 25 1226320 V. Description of the invention (20) Insertion tube 1 6 for blow-in, Insertion tube 1 8 for blowing, which is provided by the funnel 2 1, the agent supply system, and the powder coke supply system. The amount of the dazzling metal 51 in the device is set on the anti-dazzling metal 51. Next, the composition and amount of the raw material stored in the drain 50 are placed in the funnel 21. Then, while the material is melted, the feeder 23 is driven, and the component adjusting agent row 15 in the feed is inserted, and the inserting pipe 16 is blown into the component adjusting agent, and the multi-material melt 50 is charged. As mentioned above, the temperature of the molten material in the heat transfer of the molten metal 5 1 through the temperature feeder 2 5 transports the funnel 2 2 by airflow, while the char is inserted, the powder coke is inserted into the feeder 2 4 Funnel 2 2, 'and oxygen, first, the tank 10 should be in the neutral state, and the molten material in the hopper 20. The metering device is self-inserting melt 50 and feeder 24, and the outlets are respectively inserted into molten metal 5 1 for carbon blowing in the presence of molten gold amount, inserter 16 is fed by feeder 2, 5 and insert supply system. The molten slag and the like must be used to calculate the loading amount of the raw material molten material 50 0. If necessary, the quantitative component pipe 14 blows nitrogen into the molten metal 5 1 — to make the nitrogen gas flow in the funnel 20 0 Genus 5 1 in. The molten metal 5 1 is blown and melted into the tube 17. The tube 17 is composed of the raw material melt 50% of the set amount of the raw material, which can be transferred to the molten raw material and stirred to transport the raw potassium. And oxygen settings. Composition adjustment can be used. The melt 50 and the potassium raw material melt which is calculated for floating amount will store the molten metal 5 1 at the same time and the funnel 2 1 from the tube raw material and melt, melt into the bell raw material and the component adjusting agent, can It is heated through the guide, and the reaction tank is lowered due to the loading of the raw materials. If the solution is not sufficiently dissolved, the powder coke in the starter can be charged. The powdered coke was blown into the molten metal 51 using a nitrogen tube 17. This powder coke also starts to insert oxygen or gas containing oxygen from the insertion tube 18

1226320 V. Description of the invention (21) — = Strike, powder coke in Xuan Rong metal 51 or raw material: Yes ;; can marry molten metal 51 and raw material 5. Plus :, warm production ^ companion :: the second uncle's end coke and oxygen 'is to keep the melt in the tank within a set temperature range-while adjusting the flow rate: even within the set amount of potassium raw materials and ingredients Human tube Η blowing nitrogen into the winter ㈣ self-insertion into a state where unmelted material does not exist; 広:? 10 〇 Separate the molten metal, and then send the fusion material and the molten material to the cooling and solidifying device. The discharged fusion 1 :: Fang: After the melting step separated from the fusion melt, or remaining in the reaction tank 10, the energy can reach ^ "person = 2nd fusion system / d ^" The same processing operations as described above are performed. 0Filled with raw materials: Fang: 8 insertions, 14 14, U, 1 6, 1 7, 1 8 series are inserted in molten metal 51 and used as raw material smelter 50, in the opposite bank 1. Blowing nozzle at the bottom to blow nitrogen, and 2 = the day when the carbon is set at the bottom: the potassium raw material, the ingredient adjuster, and the method of adding tae’an are not limited to the method of producing gas in A such as…, It can also be from the reaction tank 10: Ai Er :, material melt 5. The above square taste ^ ^ t 〇 邛 is added to the raw material melt 50 and blown to the v material ΐ L, /, the device of FIG. 3 is the same, even if the powder coke is burned only by gas, therefore, oxygen It is possible to blow the molten material into the molten material, and blow the oxygen &lt; Milk Ritual 3 with milk 91102894.ptd Page 27 1226320 V. Description of the invention (22) The cooling and solidifying steps ST13 and ST13, the pulverizing steps ^ 14 and ST14, and the granulating step ST15 are related to the first and The cooling and solidifying steps ST2 and ST2 ', the pulverizing step ST3 &amp; ST3, and the granulating step ST4 of the second embodiment are performed in the same manner. It is the smelting metal that exists when the fusion process of the raw material melt and the potassium raw material is performed! , Can use the most practical Xuanrong pig iron. Fig. 9 and Fig. 10 are schematic diagrams showing an example of an apparatus for implementing the present invention using slag on molten pig iron discharged from a blast furnace, Fig. 9 is a plan view, and Fig. 10 is a cross-sectional view. In Figs. 9 and 10, 30 is a main chute for flowing molten pig iron slag discharged from the blast furnace, 31 is a gate provided in a separation section (skimmer section) for separating molten pig iron blast furnace slag, and 32 is used In order to clear the separated material from the separated blast furnace :. A space upstream of the gate 31 of the main chute 30 is provided with an insertion pipe 35 for unloading raw materials and an insertion pipe 36 for ingredient modifiers. In addition, the system 30 in the main hopper is configured such that the slag 50a is in a state floating on the molten pig iron 51a, and == 35, which is inserted into the slag 50a or the upper part thereof, and the front end of the insertion pipe 36 is Insert it to the depth to which the molten pig iron 51a flows. Furthermore, one side of the upper nitrogen gas line is connected to a raw material supply device composed of a potassium raw material funnel 40 and a feeder 43. On the other side, it is connected to A component adjusting agent supply device including a component adjusting agent 41 and a feeder 44. Therefore, $ can be used to blow the molten pig iron slag under the convection to feed the potassium raw material and the component adjusting agent. In this device, first, the flux value of the potassium raw material is calculated based on the preset flow rate and the preset composition of the blast furnace flowing down with the molten pig iron. And the flow rate of the blade forming agent, and set the feeder 4 3 and the feeder 4 4 respectively.

1226320 V. Description of the invention (23) Next, in the downstream flow of molten pig iron slag, while feeding nitrogen in each nitrogen pipeline, the feeders 43, 44 are operated, and the potassium raw material and the component adjusting agent are inserted into the tube 3 5. 3 6 Blow into blast furnace 50 a or dazzle pig iron 51 a. The blown potassium raw material and the component adjusting agent are heated and melted between the blast furnace slag 50a and the downflow. The fusion material-melt 52, which is a fusion of the three raw materials of potassium raw materials, component modifiers, and blast furnace slag, is separated from the molten pig iron in the separation section (skimmer section), and then diverted to the slag tank 32, and then sent to the cooling and solidifying device. . In this case, since the amount of the raw material is calculated based on a preset value of the blast furnace slag flow rate, the composition of the fusion melt after the fusion treatment may vary to some extent. Therefore, when the components of the product must be closely managed, the fusion melt 52 diverted to the slag tank 32 can be loaded into the device as shown in FIG. 3 above, and the fusion processing is performed while adding insufficient components. For composition adjustment. In this example, the cooling and solidifying steps ST 丨 3 and ST 丨 3, the pulverizing steps ST14 and ST14, and the granulating step ST1 5 are related to the cooling and solidifying steps ST2 and ST2 'of the i and second embodiments. The pulverization steps ST3 and ST3 and the granulation step ST4 are performed in the same manner. -In the above example, the blast furnace slag from the molten pig iron from the blast furnace is used to carry out the third and fourth embodiments, and as the raw material melt, the desiliconization slag generated when the molten pig iron is desiliconized is used. Better. At this time, it is preferable to add the potassium raw material in a molten pig iron storage container containing the desiliconized molten pig iron and the desiliconized slag generated when the molten pig iron is desalted. Hereinafter, an example of producing a slow-acting potassium fertilizer in this way will be described with reference to FIG. 11. Figure 11 shows the use of desiliconized molten pig iron.

1226320 V. Sectional view of an example of an apparatus for desiliconizing the slag on (24) to implement the methods of the third and fourth embodiments of the present invention. In the figure 丨 丨, a hot-melt pig iron receiving container 6 containing blast furnace (not shown) ^ Laixuan melted pig iron 6 2 is mounted on a sliding rack 6 3 and is sent to a desilication treatment. Device. In addition, the molten pig iron capacity is 6 1 and is transferred from the blast furnace to the Xuan Rong pig iron processing equipment through the sliding frame 6 3 and then to the converter (not shown). An up-blowing oxygen insertion pipe 66 and an injection pipe 67 are provided in the desiliconization equipment. The up-blown oxygen insertion pipe 66 and the injection pipe 67 are configured to move up and down in the remeltable pig iron storage container 61. In addition, the stone removal treatment equipment has a system composed of a storage tank 70 and a displacement tank 3, a system composed of a storage tank 71 and a displacement tank 74, and a storage tank 72 and a displacement tank 7 The system consisting of 5 and the 3 material supply system, and the common dispenser 76 constitute the first! The raw material supply unit 90 is connected to an injecting pipe 67 connected to the same batcher 76. Moreover, = by adjusting the position of the tip of the injection pipe 67 for transporting nitrogen gas, the potassium raw material 65 stored in the storage tank 70, the component adjusting agent 68 stored in the storage tank 71, and the storage tank 72 The slag-forming agent 69 in the medium is blown into the molten 2 iron 6 2 or the desiliconized slag 64 4 and added. Alternatively, the tip of the injection pipe w may be disposed directly above the desilication slag 64, and the potassium raw material 65, the component sizing agent 68, and the slag forming agent 69 may be introduced into the desilication slag 64 together with nitrogen. Add to. In addition, the potassium raw material 65 in the storage tank 70, the composition adjusting agent 68 in the storage tank 71, and the slag-forming agent 69 in the storage tank 72 can be independently controlled through the displacement tanks 73 and 75. The addition amount and the addition time are performed by blowing, and the blowing of nitrogen alone from the injection pipe 67 can also be used to stir the molten pig iron.

1226320 Five 'invention description (25) Slagging agent is used to adjust the alkalinity in desilication treatment, so quicklime is usually used. On the other hand, on the opposite side of the first raw material supply device 90, a second raw material consisting of a hopper 77, 78, 79, a release device 81, 82, 83, a raw material transfer device 84, and an inclined pipe 85 is provided. With the supply device 91, the second raw material supply device 91 can transfer the Shu material 65 in the hopper 77, the component adjusting agent in the hopper 78, 6 8 and the iron ore sintered powder 8 in the hopper 7 9 from above. It is added to the molten pig iron storage container 61. Next, a method for producing a dross slag having a desired composition of a slow-acting potassium fertilizer by using such a structure and a processing device for removing stones is described. First, a method for manufacturing by adding a potassium raw material 65 and a component adjusting agent 68 after the desilication treatment will be described. The desilication treatment of the molten pig iron 62 is carried out in the molten pig iron accommodating container 6. Prior to the desilication treatment, it is necessary to grasp the amount and composition of the molten pig iron slag (blast furnace slag) remaining in the molten pig iron valley accommodating 61. The amount of residual collapse can be determined by measuring the thickness or visually observing the area ratio of the residual slag covered with molten pig iron 62. The slag composition can be grasped through analysis. It is then desiliconized. Desiliconization treatment can be carried out, for example, by adding iron sintered powder 80 0 through a slanted tube 85 to the molten pig iron holding container 6 from above, and blowing oxygen into the smelting and melting through an upper blowing oxygen insertion tube 6 6 on the same day. The hot liquid surface of the pig iron 6 2 is further blown with nitrogen through an injection pipe 67 to stir and mix the molten pig iron 62 and the iron ore sintered powder 80. Through this desiliconization treatment, oxygen and oxygen in the iron sintered powder 80 will react with the stone in the molten pig iron 62 to form Si02. The generated Si 〇2 is mixed and fused with the residual slag, and a desalination containing Dori S i 〇2 is generated on the molten pig iron 62. &gt; Check 64. Also 'off; ε evening treatment, not limited

91102894.ptd Page 31 1226320 V. Description of the invention (26) This method is also determined on the right side; '^ There are M quicklime and the like as a slag-forming agent 6 9 Via the tube, send: the performer' can also make two The iron oxide is used instead of the iron ore sintered powder 80. After performing the off-second processing in this way, it is possible to grasp the 2 liters generated by the off-silicon processing. The amount of SlO2 in the sore can be grasped by the silicon multiplier of molten pig iron 62 before and after the stone removal treatment. It can also be grasped by oxygen and oxygen in the iron ore and γ. Moreover, it can be determined by the amount of Si02 produced, ^ The amount and composition of the residual slag held by Wang F 刖 at the middle of the evening can grasp the approximate weight of desilication 64. From the grasp of the approximate weight and composition of desilication slag 64, the amount of potassium raw material 65 can be determined. And the addition amount of the component adjuster 68 when necessary. In addition, by using silicon slag 64 to analyze the sample to analyze the composition, the positive amount and composition can be grasped. Then, the set amount of potassium raw material 65 and necessary A set amount of the component adjusting agent 68 was added to the molten pig iron storage container 61 at this time, and the production of the fusion melt was started. Before the potassium raw material 65 was added, nitrogen was blown into the molten pig iron 62 from the injection pipe 67. The reason is that by blowing in gas, the molten pig iron 62 and the desilication slag 64 can be stirred, while the desilication slag 64 is melted, the composition of the desilication slag 64 can be uniformized, and the subsequent The steps are easy to carry out. One minute of raw material 65, in order to improve its It is better to add the self-inclined tube 85 from above into the molten pig iron storage container 61. At this time, if the potassium raw material 65 is pressed into a block in advance, dust generation can be prevented. In addition, powdery potassium raw material is added. In the case of 65, it is better to use a carrier gas to blow through the injection pipe 67 into the desilication slag 64 for addition, or to project it into the desilication slag 64 and add it. Figure 1 1 shows the unloading of the raw material 65 from Added state. Although potassium raw materials can also be blown into the molten raw

91102894.ptd Page 32 1226320 The fusion of potassium raw materials, the injection tube 6 7 is a predetermined amount of the whole agent 68 and the predetermined amount is fused, and the potassium evaporation agent 6 8 is added, at the same time as the promotion, V. Description of the invention ( 27) In iron 62, only 68% of the component adjusting agent is promoted, and the component adjusting agent 68 is better. The potassium raw material 65 and ingredients are preferably added before the potassium raw material 65, and it is better to add the raw material 65. The yield of 65 in the potassium raw material 65 during the state of the potassium raw material 65 and the desilication slag 64 can be increased. Potassium raw material 65 and component adjustment Nitrogen is blown into molten pig iron 62, and the fusion between component modifiers 6 and 8 is uniform, so it is preferable. The yield is not good. The required slag group σ can be quickly added to the molten pig iron 6 2 to be added. The order of addition can be arbitrary, only the component adjusting agent 68, and then adjusting the desilting slag 6 4 during the opening, which can promote the retention of the potassium raw material 65 at The high-temperature state can be reduced, and after the unloading of the raw materials is completed, the silicon slag 64 and the potassium raw material 65 and the melted slag composition can be introduced from the injection pipe 6 7 so that it can be added after the desilication treatment. The potassium raw material 65 is adjusted with the composition, and will be fused with the desilication slag 64, and the smelting slag composed of the desired acid soluble compounds can be prepared on the molten pig iron 62. 'Next, a method of supplying a potassium raw material 65 and a component adjuster 68 in a desilication process to produce a molten slag having a desired citric acid-soluble potassium compound is described as I. Before desiliconization, follow the above method to grasp the content and composition of the remaining molten pig iron slag. Then, according to the method described above, the delithography process is performed, except that in the delithography process, the potassium raw material 65 is added through the injection pipe 67 or the inclined pipe 85 and the components are adjusted i 6 8. In this case, the addition amounts of the potassium raw material 65 and the component adjuster 68 are determined in accordance with a method described later. First, the amount and composition of the residue before the desiliconization process, the silicon concentration before the desiliconization process, and the standard after the desiliconization process are used.

1226320 V. Description of the invention (28) ^ The amount of S i 〇2 estimated from the difference in silicon concentration is used to grasp the approximate composition and weight of the desiliconized slag 6 4 generated by the desiliconization process, and to grasp the desorption; 5 The approximate composition and weight of the slag 64 determine the addition amount of the potassium raw material 65 and the addition amount of the component adjuster 68 if necessary. In this way, the desilication process is performed according to the set time to complete the operation. The potassium raw material 65 and the component adjuster 6 8 added in the desiliconization process will be fused with the desilting slag 6 4 ′ to produce a dazzling melt consisting of a citric acid-soluble potassium compound on the molten pig iron 62. In this example, the cooling and solidifying steps ST13 and ST13, the pulverizing steps ST1 4 and ST1 4 ', and the granulating step ST1 5 are also the same as the cooling and solidifying steps ST2 and ST2 of the first and second embodiments. Steps ST3 and ST3 and granulation step ST4 are performed in the same manner. In this way, the desilication slag contains a large amount of SiO2. By adding potassium raw materials to it, only auxiliary ingredients can be adjusted to generate citric acid-soluble potassium compounds, and citric acid-soluble potassium can be generated by existing equipment. Compounds, so it is more economical to use Deshi Xi &gt; Cha as a raw material. Example 1 In the presence of molten pig iron discharged from the blast furnace of the iron plant, following the steps in FIG. 6, the molten blast furnace slag was mixed with silica sand and potassium carbonate to produce various types shown in Table 1. The molten raw material with basicity was changed into a slow-acting potassium fertilizer by changing the cooling rate as shown in Table 丨. The melting process step is performed by the apparatus shown in FIG. However, potassium carbonate is added by projection. As a result, as shown in Table 1, it was confirmed that the value of the basicity Ca〇 / Si〇2 is 0.2 SCA0 / Si02 $ 1 · 〇, and when cooled and solidified, from 1000 to 1

1226320 V. Description of the Invention (29) The cooling rate in the temperature range of 8 0 ° C is a r ^ n. Sentences § Ca〇 / Si02 &lt; 0.5 C, 5 C and more than two times: /Si02-0.5, when the speed is more than 5 minutes, potassium: The water solubility is small, and the characteristics of each are slow. Effective potassium fertilizer. Table 1 Fertilizer composition (% by mass) f Example 2

CaO / SiO Cooling rate (° C / min) Fertilizer characteristics W-K2〇 Water solubility rate (W-K2〇 / T-K2〇 Using the equipment shown in Figure 8, the particle size of the potassium is changed in various ways. Furnace side and silica sand, a molten slag composed of potassium carbonate and carbonic acid 4. Manufactured at A ,, +, and added to a cooling rate of approximately 1 ^ 0 · range of Example 1 from the point of solidification when WOO was solidified. t to 800 ° C

F war is 5 V / eight ,, L makes slow-acting bell fertilizer. The knife is shown in the steps shown in Figure 1. As shown in the figure. ^ 大 ^^ and ~. The relationship between the ratios is shown in Figure 12, but it is confirmed that if the potassium carbonate source is the most

91102894.ptd Page 35 1226320

5. Description of the invention (30) If the large particle diameter is 25 mm or less, extremely low water solubility of potassium can be obtained. Example 3 Using the equipment shown in FIG. 8, blast furnace slag and silica sand, a potassium raw material having a particle diameter of 6 mm, and potassium carbonate were used to change the input rate of potassium carbonate as a source of potassium. K Rong> 1 consisting of N 0 · 5. During cooling and solidification, the cooling rate in the temperature range from 100 ° C to 80 ° C is 5 t / min or more. Follow the steps shown in Figure 1 to produce a slow-acting potassium fertilizer. The addition of potassium raw materials is a projection method. At this time, the input rate of potassium carbonate per 1 ton of molten pig iron and the yield of κ20 are shown in Fig. 13. As shown in Fig. 3, it can be confirmed that ... for each! If the input rate of the potassium source is 丨 kg / min or more, the κ yield can be maintained at a high level. The smelting-like intermediate furnace shown in Table 2 discharged from the implementation of the smelting pig iron production process by using iron f &gt; Check (melting and smelting pig iron slag) and silica sand and potassium carbonate as raw materials, and follow the steps not shown in Figure 2 to produce a slow-acting potassium fertilizer. The fusion processing steps are performed using the equipment shown in circle 3. In ^ ^, 100 parts by mass of the blast furnace slag was charged into a reaction tank, and mixed with 39.3 parts by mass and 5? By parts by mass of potassium carbonate. At this time, the carbon in i was further continuously added in small amounts, While blowing in oxygen, the temperature of Timur: and oxygen: plutonium was kept at about 1 400 ° c. With this powdered coke sand and carbon Acid: ^ can prevent the temperature of the contents in # from falling, and can make silicon &gt; », silica sand and potassium carbonate all fused with blast furnace slag. This is described in 1226320 V. Description of the invention (31) II: ί: :: The melt is discharged from the reaction tank to cool and solidify. In the cooling and solidifying process of the melt, the high-pressure air is sprayed on the cold part while the melter is turned into a cold part, and the device (windbreaker) Set) Force π ':, ί: t: 4 pieces are pulverized to a particle size of 1 mm or less' Add this powder to the powder ^^% by mass, and adjust the water content. Then dry formula Λ? 1 disc type granulator is used for whole granulation, and it is a small granulated product in a box type. This granulated material is divided to obtain a particle size of 1 ~ 5. It has good handling properties. It is not hard, and it has good fluidity, so it can be taken out and hindered from scattering to the ground, or the water permeability and air permeability caused by rainwater can be confirmed. As a result, it is granular before crushing. The analysis of potassium and silicic acid in the substance is shown in Table 3. In Table 3, T-K0 矣-入 知 = citric acid-soluble extract (dissolved in 2% citric acid 2 heart, 'di M ^ potassium. T-si〇2 means whole oxalic acid, S_s2 丄 _w \ 0 means water soluble in 0.5M hydrochloric acid). From this table can be expressed The acid (potassium contained in the solution, the water-soluble ones, and the ones that are soluble in granular citric acid. That is, 'fertilizer of this embodiment :: yes; J: divided into # fertilizer's excellent It can be confirmed in X. It is X, the above is the soluble oxalic acid which is a slow-acting potassium, so the fertilizer of this example can also be used at first: :: It contains a large amount of use, and it can also be confirmed. It is the supply source of Xi 夂Make

Xj ^ l5 It is discharged from the pre-processing steps of molten pig iron from the iron plant as shown in Table 2 Page 37 91102894.ptd 1226320 --------- V. Description of the invention (32) Disengagement of state: every Potassium carbonate is used as a raw material, followed by the slow-release fertilizer removal as shown in Fig. 2 ... The processing steps are as shown in Fig. 3. First, 100 parts by mass of desilication slag is charged into reverse coke and added successively in small amounts. On the one hand, the temperature of the content of the powder was set to "50 t."; Oxygen == tank: potassium acid was successively filled in a small amount successively. / 应 'Form into granules. Then the cold part is solidified and added to this private body. Mix as ^ ^ ^ ^ ^ and adjust the moisture content. Then, mix this mixture with a second quality ㈣', in a small box-type dryer At 10. ° below = turntable-type granulation, a knife is used to obtain granules with a particle size of 1 to 5 mm. Zhi Yi, and Fei Fei, provided that the granules are actually used as fertilizers, they can be used as fertilizers. Fertilizer preparation is easy to handle due to its good fluidity. No.1, hardness, and scattering, or loss due to rain and The situation when fertilizing Tong Ersheng that interfered with the ground was also confirmed. On the other hand, the fire and air permeability, the potassium fish in the granules before crushing ... fruit, as shown in Table 3. From this table can be It is clear that the substance to be analyzed is the same as in the case of Example 4. If the potassium content is large = the granular solution of the example, the citric acid solubility of this example can be confirmed. It is excellent as a graded fertilizer Special

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1226320 V. Description of the invention (34) As in the case of Example 1, most of the potassium content is citric acid-soluble, and the fertilizer of this example has the superiority / property as a slow-acting potassium fertilizer and was confirmed. Example 7 In this example, the equipment shown in FIG. 9 and FIG. 10 is used to perform the human fusion and fusion separation steps. The composition of the blast furnace slag is shown in Table 2. First, the molten pig iron slag (slag ratio = 0.32 (slag (ton &quot; molten pig iron sand) discharged from the blast furnace is flowed into the trough at a predetermined flow rate of 2 &quot; / hour, while the proportion of silicon- Blow in the proportion, and make the potassium carbonate at 15 ° town / hour. 4: Melt the blown silica sand and potassium carbonate. This blowing is added and removed. 'The fusion melt is then divided into ri, and the solidification device solidifies it into granules. Next' To this; add the same, enter 'the granules are crushed to a particle size ι_ to adjust the water eight denier + two. 1.0% by mass of the starch as a binder was mixed, and the granulated product was obtained in the same manner as in Example 1. A granulated product was obtained in the same manner as in Example 1. This material was used for practical purposes, and it was found to have Fertilization is not easy to occur. ^ Because of good fluidity, it is easy to handle. The permeability of water and water ^ I, scattered, or lost to the ground due to rain and hindered the ground. Sexual situation has also been confirmed. As a result, as shown in Table 3, “the potassium and silicic acid in the granules before the pulverization were analyzed, and those in Example 丨!” As can be clearly understood from the table, in the case of the granular dissolving agent of this example, most of the potassium content is citric acid-soluble in the same situation. It can be confirmed that the two-ranked fertilizer has excellent retardation potassium fertilizer. Special 1226320 V. Description of the invention (35) Table 2 Slag composition (% by mass) Example 4 Example 5 Example 6 Example 7 Si02 33. 9 41. 9 33 · 3 34 · 9 A 12 〇3 14. 3 11.7 13. 2 12. 9 Fe203-4.0-CaO 42. 3 14. 8 40. 7 43. 6 MgO 6. 8 2. 9 5. 9 | 3. 4 Table 3 Fertilizer composition Example 4 Example 5 Example 6 Example 7 T-κ2ο 21. 5 21. 8 21. 7 21. 2 c-K20 21. 1 21. 1 21. 2 20. 5 w-K20 1. 1 0 · 8 0. 8 1. 0 T-Si02 40. 1 3 2.4 40 · 4 40 · 6 s _ S i 02 33.5 25. 0 31. 9 32.9 Potassium water solubility (%) 5. 1 3. 7 3. 7 4. 7 Example 8 to The apparatus shown in FIG. 11 implements the present invention. The molten pig iron from the blast furnace is transferred to a desilication treatment apparatus. The weight of the molten pig iron is 150 tons, and the composition of the molten pig iron is C: 4.6 mass%, Si ·· 0 · 24% by mass, P: 0.013% by mass, S: 0 · 0 4 2% by mass, and the molten pig iron temperature is 1 3 9 5 ° C. Blast furnace slag (Ca0 = 44% by mass,

Si 02 = 35 mass%, MgO = 6 mass%, Al2 03 = 13 mass%), residual slag amount

iili 91102894.ptd p. 41 1226320

V. Description of the invention (36) Visual observation is 40 kg. First, a desilication process is performed. Desiliconization process, which is continuously blown to the molten pig iron from the hot-blowing oxygen insertion tube at an oxygen flow rate of 800 ~ 90 0Nm3 / hour to the night surface &amp; the iron ore sintering powder is continuously added from the top at a speed of 200 ~ 240kg / min. It was added, and quicklime as a slagging agent was continuously blown into the molten iron through the injection pipe together with nitrogen at a rate of 40 to 50 kg / min, and the desilication treatment was completed in 5 minutes. The total amount of oxygen added was 74Nm3, the total amount of iron sintered powder was 1 100 kg, and the total amount of quick lime was 220 kg. The temperature of the molten pig iron after ε treatment was 1 3 37 ° C.

The silicon concentration in the molten pig iron after the desiliconization treatment was 0.12% by mass, and the amount of Si02 produced through the desiliconization treatment was 385 kg, which was estimated from the concentration of Shi Xi in the molten pig iron before and after the desiliconization treatment. In addition, the basicity (denoted as Ca0 / Si02; and C / S) was calculated from the residual slag amount before the destone removal process, the amount of quick lime added during the destone removal process, and 220 kg, and the amount of si0 formed was 385 kg. 〇 · 75. Therefore, it is not necessary to add an ingredient adjusting agent. As a raw material unloading system, the target of 10 was set to 20% by mass and the yield was set to 90%. The amount of potassium carbonate added was calculated to determine 409 kg.

Then, production of a slow-acting potassium fertilizer is performed. First, before the addition of potassium carbonate, nitrogen was blown into the molten pig iron through an injection tube for 2 minutes, and the molten pig iron was mixed with desulphite to melt it. Then, the blowing of nitrogen gas was stopped, and the potassium carbonate w80 ~ 120kg / min preformed into a pellet having a diameter of about 30mm was added from above, and the addition of 409kg was completed in 5 minutes of continuous addition. After the potassium carbonate was added, nitrogen was blown into the molten pig iron through an injection tube for 2 minutes to promote the fusion of the desilication slag and potassium carbonate to obtain a molten slag.

1226320 V. Description of the invention (37) After that, the generated molten slag is scraped out from the molten pig iron containing valley with a slag scraper into a cast iron receiving pan (slag pan). Then, the molten slag was poured into an iron box installed in the house, and cooled and solidified 'to obtain 1,258 kg of block slag. This lumpy slag was pulverized to a particle size of 1 mm or less, and this powder was added with and mixed with 1.0% by mass of starch as a binder, and the water content was adjusted to obtain a granulated product in the same manner as in Example 1. When this granulated material was used as a fertilizer for practical use, it was found that it had a suitable hardness as a fertilizer, and that it had good handling properties due to its good fluidity. When fertilization is not likely to occur ϊίΓ ΐ: The shape of water permeability and air permeability that is lost by rain and hinders the ground is also confirmed. ~ 丨 Earth

Then, the slag composition before granulation, the slag composition at the time of carbonic acid, and the yield of potassium carbonate are grasped as shown in Table 4. The analytical value of this water-soluble potassium is shown in Table 5. No, as shown in the table below, the solubility of potassium in the slag is excellent as a slow-acting potassium fertilizer = large. The yield of gadolinium divided into potassium citrate was as high as 97%. Can be confirmed. Again, carbon Table 4

1226320 V. Description of the invention (38) * 1 258kg X 0.214 409 kg x K20 / K2C03 Table 5 Example 8 Analysis value of potassium in fertilizer (% by mass) τ-κ2ο 21.4 c-K20 20. 5 w-K2 0 8. 0 Potassium water solubility (%) 37. 4 Example 9 The potassium silicate fertilizer with steel slag as the main raw material was pulverized to a particle size of 1 mm or less. The powdered potassium silicate fertilizer was weighed in a set amount, and added and mixed as shown in Table 6. The various binders are shown, and the water content is adjusted. The granules are tested using a rotary disc granulator, dehydrated and dried at 100 ° C in a box-type small dryer, and sieved to obtain N with a particle size of 1 to 5 mm. 〇. 11 ~ 15 of the sample. The granulation properties of these samples were evaluated, and the hardness was measured using a durometer. The results are shown in Table 6 together. In the evaluation of the granulation property, since the samples No. 11 and No. 12 could not be granulated, the granulation property evaluation was X, and the samples No. 13 to 15 could be granulated, so the granulation property evaluation was 0. . In addition, the hardness of the samples of No. 11 and No. 12 which could not be granulated was not measured.

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As shown in Table 6, the samples using Magnesium Sulfate, Lignin, Nos. 13, 14, and 15 had excellent granulation properties. Among them, the powder showed particularly high hardness. Example 1 (1 Starch as a binding agent 'was confirmed. Next, the celestial acid bell fertilizer, which is the main raw material, was pulverized into a powder potassium silicate fertilizer with a diameter of 6 mm, and the powder potassium silicate fertilizer was added. The mixture is shown in Table 7 For all kinds of starch, adjust the skin of Gongdandan + Menshi as shown in Table 7 and apply Zhibiaoli while the starch is not gelatinized: = Ξ treatment 'to test with a turntable granulator The granules are removed in a small-sized dryer! 〇〇t ... You can get 5 ^ ni 5 ~ 1 of No. 16 ~ 18 into the division, get the particle size; rr evaluation, and 2 of the sample 5 ° grains stand still In the water-after the day and night, the number of fruits that have not disintegrated, the fruit, and the grain shape are still there, but they will disintegrate only by applying a slight force = .16 The sample is evaluated as / ^, and it completely disintegrated in water " .17 and 18: The evaluation is 0. The necessity of heat treatment at the time of granulation, the granulation property: the results of evaluation, and the results of evaluation of the disintegrability in water are shown in Table 7.

91102894.ptd Page 45 1226320 V. Description of the invention (40) M 16 Starch 17 Processed starch A (required for heat treatment 18 Processed starch B (α)) Necessary disintegration in water 〇 ΔΟ 〇 〇 As shown in Table 7, Ν 〇 〇 1 6 ~ 1 8 4 / Granularity and sufficient water disintegrability, formula = Either one shows excellent bonding agent No. 17 and 18 of $ 0 working powder and processed starch 8 Make

Treatment can be granulated. ”，、、， ° agent of Νο · 18 samples can be heated without using steel slag as the main original weighing amount of this powder II: unloaded into _ below, Likoufeng, Bing" wild fertilizer 'will Dianfen Yizhi Q π-, add and mix moxibustion knife sheep, transfer the eighth θ, and add the things in Table 8 in the box-type small dryer; ^ 'to ^ test turntable granulator To obtain the N of 5_. ^ 94 Water drying, sieve meter to determine the hard household, spot two materials. The obtained sample was evaluated by hard. Jiang Shizhe &amp; Second, the same as in Example 10. The results of disintegration in water are shown in Table 8. _ 9ll0 ^ .ptd Μ

Page 46 1226320 V. Description of the invention (41) Water in water ^^ Interpretable 〇 Hard ί Unexpectedly, the sample of any of No. 19 ~ 24 can get high

It is disintegrating in water, and the starch addition rate is high to a relatively low hardness. T 2 ^ evaluated the disintegrability in soil for the sample No. 19. Disintegration in soil 'is to add 50g of dry soil to the test grains, mix them, add the most water, and keep for 1 week. Then sieved through a sieve of 200 00 p, and set up 1 instrument. As a result, more than 50% of the particles disintegrated, and the remaining particles were hardened. It is less than 0.1, and it can be confirmed that it has excellent disintegration in soil. As described above, according to the present invention, the concrete is added to the specified materials containing 0 and 3102, and the concrete is mixed with the raw material refined product. Coupled to cool and solidify the melt after fusion treatment, and slow-release the fertilizer. In this process, melt the melt from ι: οοί to 0.2 $ Sl02d · 0, and simultaneously Cooling rate in the temperature range from 100 ° C to 8 0 ° C, set to apricot

91102894.ptd 1226320

V. Description of the invention (42) In the case of Ca0 / Si02 -0 · 5, the compound is formed, and the lemon can be produced with a high rate of fertilizer characteristics.

Ca0 / Si02 &lt; 0 · 5 At 5 ° C / min or more, citric acid-soluble potassium compound slow-acting bell fertilizer. It is effective to inhibit water-soluble potassium compounds by 0.5 ×: / min, so it is effective. Since the pair contains; (1) Melt the ingredients grouped at 5, and / with La a Mg0, Aΐ203, and Mo, and the raw material melt of Si0 (typically, slag, &quot;], and add potassium raw materials to make this The potassium raw material is melted to fuse with the raw material molten material to form a potassium compound. The raw material of the potassium raw material fusion is a molten material, so it has excellent thermal economy and can be processed in a short time. The granules are granulated, so there is no occurrence of scattering during fertilization, loss of rainwater, and impediment to the water permeability and air permeability of the ground. Also, because it is regular and spherical, it has no edges and corners, so it can be used. Slow-acting potassium fertilizer with good properties. Because the potassium silicate raw material is added with a binder for granulation, it will not cause scattering during fertilization, loss of rainwater, and obstruction of the water permeability and air permeability of the ground. It is regular and spherical, and has no edges and corners, so it is possible to obtain slow-acting potassium fertilizer with good handling properties. In addition, by using at least one kind of powder, sulfuric acid, and lignin, good granulation can be obtained. Sex, where In particular, the hardness of those obtained from the use of dian powder is needless to say that in the granulation, it will not be damaged during the use and treatment between circulation and fertilization ', and it can be appropriately used in water such as rain and soil. It disintegrates and disperses into the soil at a rapid rate, so a granular slow-acting potassium fertilizer with very good characteristics can be obtained.

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V. Description of the invention (43) 10 Reaction tank 11 Cover 12 Gas discharge D 13 Valve 14 Insertion tube 20 Potassium raw material funnel 21 Composition regulator funnel 22 Powder coke funnel 23, 24, 25 Feeder 30 Main feed tank 31 Gate 32 Slag tank 35 Insertion tube for potassium raw material 36 Insertion tube for component modifier 40 Potassium material funnel 41 Composition modifier funnel 43, 44 Feeder 50 Raw material melt 5 0a Slag 51 Molten metal 51a Molten pig iron 52 Fusion melt 61 Melt Pig iron holding container 62 Molten pig iron 91102894.ptd Page 49 1226320

V. Description of the invention (44) 63 Sliding frame 64 Desiliconization slag 65 Potassium raw material 66 Up-blowing oxygen insertion tube 67 Injection tube 68 Composition adjusting agent 69 Blasting agent 70, 71, 72 Storage tank 73, 74, 75 Displacement tank 76 Batcher 77, 78, 79 Funnel 80 Iron ore sintered powder 81, 82, 83 Release device 84 Raw material conveying device 85 Inclined tube 90 First material supply device for crushed material (Figure 11) 91 Second material supply device for funnel (Figure 11) 92 Conveyor belt 93 Drum rotary granulating shoulder 94 Adhesive 95 Container 96 Dryer Page 50 91102894.ptd 1226320

V. Description of the invention (45) 97 elevator 98 sieve 99 cooler 100 pulverized material 101 funnel 102 adhesive 103 container 104 mixer 105 disc granulator 106 conveyor belt 91102894.ptd page 51 1226320 schematic illustration A flowchart showing a method for producing a slow-acting potassium fertilizer according to the first embodiment of the present invention. Fig. 2 is a flowchart showing a method for producing a slow-acting bell fertilizer according to a second embodiment of the present invention. Fig. 3 is a diagram showing an example of an apparatus for performing a fusion processing procedure in the first and second embodiments of the present invention. Fig. 4 is a diagram showing an example of an apparatus for performing a granulation step according to a second embodiment of the present invention. Fig. 5 is a diagram showing another example of an apparatus for carrying out the granulation step in the second embodiment of the present invention. Fig. Β is a flowchart showing a method for producing a slow-acting potassium fertilizer according to a third embodiment of the present invention. S7 is a flowchart showing a manufacturing method of the slow-acting slanting fertilizer in the fourth embodiment of the present invention. Fig. 8 is a diagram showing an example of an apparatus for performing a fusion processing step and a fusion separation step in the third and fourth embodiments of the present invention. Fig. 9 is a schematic plan view showing an example of an apparatus for implementing the present invention using smelting pig iron discharged from an oven. Fig. 10 is a schematic cross-sectional view showing an example of an apparatus for carrying out the present invention using slag on molten pig iron discharged from a blast furnace. Fig. 11 is a diagram showing another example of an apparatus for performing a fusion processing step and a fusion separation step in the third and fourth embodiments of the present invention. Fig. 12 is a graph showing the relationship between the maximum grain size of potassium carbonate and the ratio of W-K

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Claims (1)

1226320 VI. Scope of patent application ___ 1 · —A method for producing a slow-acting potassium fertilizer, which has the following steps to form a molten material, which contains one kind selected from the group consisting of _, Ay / 骒:% 榀Or two or more ingredients, and Ca0 and "O2 of the three original slave et0 I, 2 can be used to melt this potassium source, and melt with the raw materials Γ mouth to form Ca〇 / Si02 value 0.2gCa〇 / The SiO 2 material melting and two P curing step is to melt and melt the above-mentioned: melting: two materials, / eight or more to 80 ° C. in the temperature range 'tCa () / Si () 2 &lt; {) · 5 hours "...", but solidified, Ca0 / S102- °. 5 o'clock at 5 speeds or more, 5 pulverization steps to pulverize the solidified product produced. 2. Kind of slow-acting The manufacturing method of potassium fertilizer, the right step of forming a dazzling melt, is the following steps: 1 in the group of free_, Al203, and Fet〇, below, the raw materials containing the selected Ca0 and Sl02 The molten material is added to the potassium component, melted, and fused with the raw material molten material, so that the potassium raw material CaO / Si 02 g 1. 〇 molten material; the value of 1 2 is 0.2S. The cooling and solidification step is Will be In the temperature range of 1000 ° C to 800 ° C, the melt of 杳 H is above / min, when Ca0 / Si〇2W.5 Shitian, and then solidified by cooling; C / knife speed above Crushing: step is to generate the solidified product powder. 3. As mentioned in the patent application Fanyuan item 2, the above molten metal is melted pig iron. "# Fertilizer manufacturing method, which 4. Such as the scope of the patent application, Friend 91102894.ptd Page 54 1226320 ^ --- The scope of the patent application for the production method of effective potassium fertilizer is 5, the above-mentioned raw material melt is molten slag. In the case of the manufacturing method of slow-acting potash fertilizer under item 4 of the scope of patent application, the private description of Xuan Rong / Check is the desilication slag produced by Xuan Rong pig iron discharged from the blast furnace during the treatment of Rishi. &lt; 訏 0 tim: ϊ = manufacturing method of manure, which has the following steps: The step of rural raw materials, when the desiliconization process is performed to contain the molten 4 molten silicon and molten pig iron. The generated desilicon pig iron is contained in a container; the step of forming a melt is to make the desilication slag to have a value of at least fSi02. .2. The solid part of the shape T′i is a solidification step, in order to fuse the slag generated in the 100 ° C to 800 ° C3 domain, when the coffee is 〇2 &lt; 0.5. .5 minutes or more, when the powder is cooled and solidified at a rate of 5 ° C / minute or more; 'knife V step' is the one that pulverizes the solidified product. 7 The manufacturing method of the slow-acting potassium fertilizer according to item 1 of the patent, wherein T f is provided with a granulation step; the granulation step is to add a binder to granules produced by pulverizing the smashes produced by pulverization. A method for producing a slow-acting potash fertilizer 'includes the following steps: The step of fusing the raw material smelt is to contain one or two kinds selected from the group consisting of Ca0, Mg0, and 乂 3: t0. The above ingredients are added to the raw materials, and the potassium raw materials are added to melt the potassium raw materials and fuse them with the raw material melt. From the…, the cooling step of phenophenating is performed, and the fusion processed Melt to cool and solidify; ^ 〇ό20 Crushing step, the production will be made into 9 steps, the production of 9. a kind of slow-acting potassium fertilizer 4 = adding a binder for granulation. The + method fused with the raw material melt has the following steps: &quot; There is a material selected from the group consisting of Ca0, Mg〇, for the composition of the soil and the raw material of Si02 in the presence of molten metal. 2 3 Fe: 0 One or two of the clusters are melted with &quot; $ to make them melt with the raw materials: two are added to the potassium raw material to make this potassium raw material, and then solidified, and this is solidified by two or two parts; w 5 treatment The dazzling melt is taken out, and it is subjected to a cold pulverization step. The generated teaching and learning step is to break the raw material of the second point, and the granule is added by adding a binding agent as described in the second patent application. v Manufacturing method of the above-mentioned slow-releasing desulfurization of smelting and melting gold Among them, the manufacturing method of the slow-effecting desulfurization of item 8 in the first range is a molten slag. The production method of slow-release deferred fertilizer in one of the following cases: Desiliconization = the step of desiliconizing the molten pig iron discharged from the furnace &quot; ·-a slow-release potassium fertilizer manufacturing method, which has the following The steps and the step of adding potassium raw materials are performed in a molten pig iron storage container containing the desiliconized molten pig and the desilication slag generated during the desilication treatment of the molten pig iron; Steps for fusion of silicon slag and potassium raw materials; I 91102894.ptd Page 56 1226320 VI. Order for patent scope ^ σ The step of cooling and solidifying the generated slag; = The step of pulverizing the generated solid; A step of adding a binder to the pulverized material for granulation. Medium, upper, +, method of manufacturing a slow-acting potassium fertilizer called item 8 of the patent scope, which is mainly composed of ^ 4, ° agent is made of at least one of starch, magnesium sulfate and lignin In the above, the method for manufacturing a slow-acting potash fertilizer according to item 8 of the patent, which is added in a ratio of 0.5 to 6% by mass to the pulverized material, such as from a w-cut system. In the production method of the slow-acting potassium fertilizer in the first item of the Mingli range, the particle size of the 17 ^ material is 25. In the above-mentioned application, the manufacturing method of the slow-acting potash fertilizer according to item 2 of the patent application is more than that. L. The feed rate of raw materials is 1 kg / min per 1 ton of molten metal. The method of manufacturing is based on the method of adding sticky / cultural potassium fertilizer. It adds 1 Θ to the potassium silicate raw material. Slow-acting potassium fertilizer. Among them, Q Shangshen, f. Patent No. 18 for the production method of slow-acting potassium fertilizer, as the main binder is at least one of starch, magnesium sulfate and lignin, 2 of which is 0. The method for manufacturing a slow-acting potassium fertilizer in the range of item 8 is added. The binder is 2 to 2 in the ratio of 0.5 to 6% by mass to the raw material of potassium silicate. Slow-acting potash fertilizer, Baishijia, the above 91102894.ptd page 57 i 1226320 6. Scope of patent application The adhesive is mainly composed of at least one of starch, magnesium sulfate and lignin. 2 3. If the scope of patent application is the second The slow-acting potassium fertilizer according to item 1, wherein the binder is added at a ratio of 0.5 to 6% by mass based on the raw material of potassium oxalate. 91102894.ptd Page 58