CN108033862A - A kind of preparation method of novel high-strength circular granular potassium sulfate - Google Patents
A kind of preparation method of novel high-strength circular granular potassium sulfate Download PDFInfo
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- CN108033862A CN108033862A CN201810008341.1A CN201810008341A CN108033862A CN 108033862 A CN108033862 A CN 108033862A CN 201810008341 A CN201810008341 A CN 201810008341A CN 108033862 A CN108033862 A CN 108033862A
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- potassium sulfate
- granular potassium
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/70—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Abstract
The invention discloses a kind of preparation method of novel high-strength circular granular potassium sulfate, using agricultural potassium sulfate powder, without crushing, by adding 2 5% granulation aid of total inventory after mixing, into agglomeration granulation equipment, appropriate acidity adjustment is sprayed into be granulated, through drying, cooling, just 2 4mm circular granular potassium sulfates of epigranular are obtained after screening, mean intensity is 28 45N, and extend with standing time, granule strength strengthens, nutrient content is high, K2O contents are 48.4 50%, production technology is easy, yield is high, the calcium oxide selected in the present invention, magnesia, half-H 2 O calcium sulphate both plays the role of bonded pelleting, moderate-element needed for plant can also be provided, granular potassium sulfate of the present invention, both simple substance Potassium Fertilizer can be used as, also can be as the raw material of Blending Fertilizer.
Description
Technical field
The invention belongs to fertilizer field, and in particular to a kind of preparation method of novel high-strength circular granular potassium sulfate.
Background technology
Carry out the fast development with mechanized application this year, granulated fertilizer has become the mainstream kind of in the market.Potassium sulfate
It is crops as a kind of high nutrient simple substance potash fertilizer（The especially fear-chlorion crop such as vegetables, fruit tree, tea tobacco）Indispensable fertilizer
One of item kind；Therefore, a kind of particle circle potassium sulphate fertilizer of the high nutrient of high intensity has become one kind of in the market active demand
Fertilizer.But the potassium product of in the market is powdery mostly, and powder product accumulating, fertilising inconvenience, rainwater or irrigation water are met,
Easily cause loss and soil nutrient is unbalanced；Since potassium sulfate belongs to sand mold material, viscosity and poor plasticity in itself, use
Conventional granulation processes are highly difficult.
Common granular potassium sulfate production technology mainly has three kinds currently on the market；Crystallisation, extrusion and agglomeration process；Knot
Crystallization technique is more complicated, of high cost, and consumption is big, and particle is irregular, and the market competitiveness is low；The product particle of extrusion production
Irregularly, slabbing or polygon particle, roundness is poor, lamination easily occurs when doing Blending Fertilizer, causes unevenness of application.
The granular potassium sulfate of existing agglomeration process production is often commonly incorporated into more than 20% binding agent and filler in granulation process, can so cause
The reduction of granular potassium sulfate nutrient, increases production cost, and the raw material as Blending Fertilizer suffers from the limitation of nutrient formula.
Granular fertilizer has lot of advantages compared to material powdered fertilizer：1. fertilising is convenient, can be with mechanical fertilization, applying fertilizer, it is fugitive to facilitate
2. good physical performance of cloth, when granulated fertilizer loading-unloading vehicle, do not play dirt, good fluidity, and long-term storage is not lumpd, and 3. can also rise at the same time
To the effect of sustained release, utilization rate of fertilizer is improved.4. simple substance potash fertilizer blending production low cost BB fertilizer can be used as.Production of compound fertilizer work
Skill is simple, formula is flexible, high-efficiency environment friendly, has extensive adaptability, the fertilizer that 60% is there are about in north America region is all with compound fertilizer
Material is applied.Blending Fertilizer requires each component granular size basically identical, and layering otherwise can be produced during shipping storage or fertilising
Segregation phenomenon, causes nutrient uneven.In view of the development trend of Blending Fertilizer, a kind of high intensity, high nutrient rounded grain potassium sulfate demand
It is more in short supply.The general particle of domestic existing most of granular potassium sulfate particle is uneven at present, and intensity is low, and nutrient content is low, and
Yield is small, can not meet the needs of to granular potash fertilizer.Therefore, screen suitable binding material, low-cost and high-performance, do not add or
It is few filled, it is that fertilizer industry is in the urgent need to address to produce the circular granular potassium sulfate that nutrient content is high, product strength is high
Problem.
The content of the invention
The present invention provides a kind of a kind of novel high-strength circle for producing high nutrient content, product strength height, appearance rounding
The preparation method of shape granular potassium sulfate, this technological operation is simple, solves the problems, such as existing in the prior art.
The technical solution adopted in the present invention is：
Raw material components needed for a kind of high intensity, high nutrient circular granular include：By constituent mass percentages, it is characterised in that
Powder potassium sulfate 95-98%, adhesive aid 1.6-4%, wetting agent 0.1-0.2%, acidity adjustment thing 0.3%-0.8%；By above-mentioned each group
Divide and be sufficiently mixed, you can be granulated.
The powder potassium sulfate is agricultural grade powder potassium sulfate, meets GB20406-2006 potassium sulfate for agricultural use high-class products
Standard, potassium oxide nutrient content are 51%.
The adhesive aid is the mixture for taking calcium oxide, magnesia and half-H 2 O calcium sulphate combination.
The wetting agent is polyethylene glycol 400, one or more in polyethylene glycol 200, ferrous sulfate.
The acidity adjustment thing is 98% concentrated sulfuric acid.
The new high nutrient, the preparation method of high intensity circular granular potassium sulfate, carry out according to the following steps：
（1）The potassium sulfate powder is weighed in proportion, without being crushed；
（2）Weigh the binding agent, by weight 1：1：3 weigh calcium oxide, magnesia and half-H 2 O calcium sulphate, are uniformly mixed；
（3）By step（2）Gained binding agent is added to step（1）In the potassium sulfate, 5- is stirred under 200-400r/min
10min, is uniformly mixed, obtains material A；
（4）The acidity adjustment thing concentrated sulfuric acid is added in a certain amount of water, is configured to the dilute acid soln of 3-8% mass concentrations；
（5）The wetting agent is added to step（4）In, it is uniformly mixed, obtains granulation aid B；
（6）By step（3）Obtained material A, is poured into granulating disc or rotary drum granulator, starts comminutor, granulation is helped
Agent B is continuously sprayed on using atomizer and is granulated in material A, carries out agglomeration granulation.
（7）The granular potassium sulfate made is sequentially sent to dry, screening, cooling system, conforming particle is packed, no
Conforming particle as returning charge enters granulating system after crushing.
The more existing granular potassium sulfate prilling of the present invention has the advantage that：1st, particle appearance rounding, granular size are equal
Even 2-4mm, good physical performance, good flowing properties can be directly as the raw material of Blending Fertilizer；2nd, granule strength is high, and mean intensity is
35-45N, stability is good, is not pulverized easily；3rd, the granular potassium sulfate in the present invention contains a certain amount of moderate-element, can improve plant
Calcium magnesium element needed for thing, improves fertilizer efficiency；4th, production technology is easy, is applicable in a variety of granulation modes, and work is granulated using traditional compound fertilizer
Skill, such as granulating disc or roller pelletizer；5th, using conventional agricultural potassium sulfate without crushing i.e. pelletized, production cost
Low, energy consumption is few, and easy to spread, yield is big compared with extruder grain yield, suitable for industrialized production.
Embodiment
Embodiment 1
The present embodiment provides a kind of potassium sulfate prilling, its raw material components includes：
Agricultural potassium sulfate 950g is weighed, without crushing；
In binding agent ratio 1：1：3 weigh calcium oxide 8g, magnesia 8g and half-H 2 O calcium sulphate 24g respectively；
Weigh 2g wetting agent polyethylene glycol 200s；
98% concentrated sulfuric acid 8g is weighed, is dissolved in 90ml water, is configured to 8.0% dilute acid soln；
In next step, the specific granulation step of granular potassium sulfate includes：
（1）Load weighted binding agent is added in load weighted agricultural potassium sulfate and is put into togerther in batch mixer, in 200-400r/
5-10min is stirred under min, is uniformly mixed, obtains material A；
（2）Wetting agent polyethylene glycol 200 is added in 8.0% dilute acid soln, mixes, that is, obtains granulation aid B；
（3）Material A is poured into granulating disc, starts comminutor, granulation aid B is continuously sprayed on granulation using atomizer
In material A, agglomeration granulation is carried out.
（4）After granulation, material is all put into baking oven, 70 DEG C of drying 2h, sieving 2-4mm, that is, obtain after cooling
Circular granular potassium sulfate, this technique potassium sulfate granulating rate is that 91%, 2-4mm finished granules rate is 69% after testing, and granule strength is
45N。
Embodiment 2
The present embodiment provides a kind of potassium sulfate prilling, its raw material components includes：
Agricultural potassium sulfate 980g is weighed, without crushing；
In binding agent ratio 1：1：3 weigh calcium oxide 3g, magnesia 3g and half-H 2 O calcium sulphate 9g respectively；
Weigh 2g wetting agent polyethylene glycol 400s；
98% concentrated sulfuric acid 3g is weighed, is dissolved in 90ml water, is configured to 3.2% dilute acid soln；
In next step, the specific granulation step of granular potassium sulfate includes：
（1）Load weighted binding agent is added in load weighted agricultural potassium sulfate and is put into togerther in batch mixer, in 200-400r/
5-10min is stirred under min, is uniformly mixed, obtains material A；
（2）Wetting agent polyethylene glycol 400 is added in 3.2% dilute acid soln, mixes, that is, obtains granulation aid B；
（3）Material A is poured into granulating disc, starts comminutor, granulation aid B is continuously sprayed on granulation using atomizer
In material A, agglomeration granulation is carried out.
（4）After granulation, material is all put into baking oven, 70 DEG C of drying 2h, cooling, sieve 2-4mm afterwards, that is, obtains
Circular granular potassium sulfate, this technique potassium sulfate granulating rate is that 90%, 2-4mm finished granules rate is 75% after testing, and granule strength is
28N。
Embodiment 3
Agricultural potassium sulfate 970kg is weighed, without crushing；
In binding agent ratio 1：1：3 weigh calcium oxide 5kg, magnesia 5kg and half-H 2 O calcium sulphate 15kg respectively；
Weigh 1kg wetting agent polyethylene glycol 200s；
98% concentrated sulfuric acid 4kg is weighed, is dissolved in 90L water, is configured to the dilute acid soln of mass concentration 4.2%；
In next step, the specific granulation step of granular potassium sulfate includes：
（1）Load weighted binding agent is added in load weighted agricultural potassium sulfate and is put into togerther in batch mixer, in 200-400r/
5-10min is stirred under min, is uniformly mixed, obtains material A；
（2）Wetting agent polyethylene glycol 200 is added in 4.2% dilute acid soln, mixes, that is, obtains granulation aid B；
（3）Material A is continuously sent into rotary drum granulator, starts comminutor, granulation aid B is continuously sprayed on using atomizer
Be granulated in material A, carry out agglomeration granulation, then through drying system and screening system, that is, obtain circular granular potassium sulfate, after testing this
Technique potassium sulfate granulating rate is that 95%, 2-4mm finished granules rate is 78%, granule strength 36N, granule strength after placing 100 days
For 40N.
Embodiment 4
Agricultural potassium sulfate 960kg is weighed, without crushing；
In binding agent ratio 1：1：3 weigh calcium oxide 6kg, magnesia 6kg and half-H 2 O calcium sulphate 18kg respectively；
Weigh 2kg wetting agent polyethylene glycol 200s；
98% concentrated sulfuric acid 8kg is weighed, is dissolved in 90L water, is configured to the dilute acid soln of mass concentration 8.0%；
In next step, the specific granulation step of granular potassium sulfate includes：
（1）Load weighted binding agent is added in load weighted agricultural potassium sulfate and is put into togerther in batch mixer, in 200-400r/
5-10min is stirred under min, is uniformly mixed, obtains material A；
（2）Wetting agent polyethylene glycol 200 is added in 8.0% dilute acid soln, mixes, that is, obtains granulation aid B；
（3）Material A is continuously sent into rotary drum granulator, starts comminutor, granulation aid B is continuously sprayed on using atomizer
Be granulated in material A, carry out agglomeration granulation, then through drying system and screening system, that is, obtain circular granular potassium sulfate, after testing this
Technique potassium sulfate granulating rate is that 95%, 2-4mm finished granules rate is 78%, granule strength 37N, granule strength after placing 100 days
For 45N.
Experimental example 1
The granular potassium sulfate being prepared in embodiment 1-4 is subjected to index analysis detection, as a result such as following table 1.
1 granular potassium sulfate index analysis of table
| Numbering | K2O contents（%） | Moderate-element content（%） | Yield rate（2-4mm） | Mean intensity（N） | Water content（%） | As a result |
| 1 | 48 | 1.2 | 79 | 45 | 0.8 | It is qualified |
| 2 | 49.9 | 0.5 | 75 | 35 | 0.6 | It is qualified |
| 3 | 49.2 | 0.7 | 78 | 33 | 1.0 | It is qualified |
| 4 | 48.9 | 1.1 | 81 | 37 | 1.0 | It is qualified |
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, it is possible to understand that
These embodiments can be carried out with a variety of changes, modification without departing from the principles and spirit of the present invention, replace and become
Type, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of preparation method of novel high-strength circular granular potassium sulfate, it is characterised in that method comprises the following steps：In original
The granulation aid of the 2-5% of total inventory is added in material agricultural potassium sulfate powder, uniformly after mixing, into agglomeration granulation equipment, spray
Enter appropriate acidity instrumentality to be granulated, a kind of circular high intensity potassium sulfate single-size is obtained after drying, cooling, screening.
A kind of 2. preparation method of novel high-strength circular granular potassium sulfate according to claim 1, it is characterised in that institute
The agricultural potassium sulfate powder stated, without crushing, by constituent mass percentages, additive amount 95-98%.
A kind of 3. preparation method of novel high-strength circular granular potassium sulfate according to claim 1, it is characterised in that institute
Binding agent in the granulation aid stated is magnesia, calcium oxide, half-H 2 O calcium sulphate by constituent mass than 1：1：3 mixture, its
By constituent mass percentages, additive amount 1.6-4.0%.
A kind of 4. preparation method of novel high-strength circular granular potassium sulfate according to claim 1, it is characterised in that institute
Wetting agent in the granulation aid stated is polyethylene glycol 400, one or more in polyethylene glycol 200, ferrous sulfate, and additive amount is
0.1-0.2%。
5. the manufacture method of a kind of circular high intensity granular potassium sulfate according to claim 1, it is characterised in that described
Acidity adjustment thing is the concentrated sulfuric acid, additive amount 0.3%-0.8%.
A kind of 6. preparation method of novel high-strength circular granular potassium sulfate according to claim 5, it is characterised in that institute
The acidity adjustment thing concentrated sulfuric acid stated need to be made into dilute acid soln, and institute's water requirement is the 9% of total inventory by mass percentage.
A kind of 7. preparation method of novel high-strength circular granular potassium sulfate according to claim 1, it is characterised in that institute
The granular potassium sulfate particle diameter stated is 2-4mm, mean intensity 28-45N, K2O content is 48.4-50%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810008341.1A CN108033862B (en) | 2018-01-04 | 2018-01-04 | Preparation method of novel high-strength round granular potassium sulfate |
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| CN201810008341.1A CN108033862B (en) | 2018-01-04 | 2018-01-04 | Preparation method of novel high-strength round granular potassium sulfate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704863A (en) * | 2019-02-18 | 2019-05-03 | 湖北三宁化工股份有限公司 | A kind of bulky grain sulfur-containing nitrogen fertilizer and preparation method thereof |
| CN109851429A (en) * | 2019-02-25 | 2019-06-07 | 齐齐哈尔大学 | A kind of preparation method that powder fertilizer can be made to spheric granules of extrusion granulating method |
| CN112919933A (en) * | 2021-04-13 | 2021-06-08 | 康伟华 | Method for preparing organic potassium sulfate round granular fertilizer |
| CN113105292A (en) * | 2021-04-23 | 2021-07-13 | 湖北富邦科技股份有限公司 | Production method of synergistic potash fertilizer capable of improving yield |
| CN113149793A (en) * | 2021-04-23 | 2021-07-23 | 湖北富邦科技股份有限公司 | Neutral round particle potassium sulfate fertilizer and manufacturing method thereof |
| WO2021217200A1 (en) * | 2020-04-27 | 2021-11-04 | Pact Renewables Pty Ltd | Mineral-based composites |
| CN113603558A (en) * | 2021-07-20 | 2021-11-05 | 烟台市烟农富邦肥料科技有限公司 | Granulation method for increasing wet strength of round granular potash fertilizer |
| WO2021258139A1 (en) * | 2020-06-25 | 2021-12-30 | Pact Renewables Pty Ltd | Degradable materials containing waste paper products |
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| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN1530349A (en) * | 2003-03-10 | 2004-09-22 | 铜陵化学工业集团有限公司 | Potassium chloride united pelleting process |
| CN103819271A (en) * | 2014-02-25 | 2014-05-28 | 湖北富邦科技股份有限公司 | Preparation method of novel granular potassium chloride fertilizer |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN1530349A (en) * | 2003-03-10 | 2004-09-22 | 铜陵化学工业集团有限公司 | Potassium chloride united pelleting process |
| CN103819271A (en) * | 2014-02-25 | 2014-05-28 | 湖北富邦科技股份有限公司 | Preparation method of novel granular potassium chloride fertilizer |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109704863A (en) * | 2019-02-18 | 2019-05-03 | 湖北三宁化工股份有限公司 | A kind of bulky grain sulfur-containing nitrogen fertilizer and preparation method thereof |
| CN109851429A (en) * | 2019-02-25 | 2019-06-07 | 齐齐哈尔大学 | A kind of preparation method that powder fertilizer can be made to spheric granules of extrusion granulating method |
| WO2021217200A1 (en) * | 2020-04-27 | 2021-11-04 | Pact Renewables Pty Ltd | Mineral-based composites |
| GB2610096A (en) * | 2020-04-27 | 2023-02-22 | Pact Renewables Pty Ltd | Mineral-based composites |
| WO2021258139A1 (en) * | 2020-06-25 | 2021-12-30 | Pact Renewables Pty Ltd | Degradable materials containing waste paper products |
| GB2611904A (en) * | 2020-06-25 | 2023-04-19 | Pact Renewables Pty Ltd | Degradable materials containing waste paper products |
| CN112919933A (en) * | 2021-04-13 | 2021-06-08 | 康伟华 | Method for preparing organic potassium sulfate round granular fertilizer |
| CN113105292A (en) * | 2021-04-23 | 2021-07-13 | 湖北富邦科技股份有限公司 | Production method of synergistic potash fertilizer capable of improving yield |
| CN113149793A (en) * | 2021-04-23 | 2021-07-23 | 湖北富邦科技股份有限公司 | Neutral round particle potassium sulfate fertilizer and manufacturing method thereof |
| CN113603558A (en) * | 2021-07-20 | 2021-11-05 | 烟台市烟农富邦肥料科技有限公司 | Granulation method for increasing wet strength of round granular potash fertilizer |
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