TWI327169B - Method for producing sintered ore - Google Patents

Description

IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to the moisture content of the sinter raw material for granulation of blast furnace slag and the percentage of burned in the process of the prior art. = The sintered ore used as the main raw material in the furnace pig iron method is processed as shown in the figure. The original (4) is less than 1 Gmm and the average particle size is 10~b. Omm or so iron ore powder or shearing ► m iron in the recovered powder Sintering or sieving: sulphide-containing materials such as limestone or dolomite, granulation aids such as quicklime, coagulation powders, coke powders, coagulation materials, etc. Limestone or Baidi stone contains (4) raw materials, hereinafter referred to as Ca 〇 series auxiliary The raw materials are stored in the hopper 1. The sintered raw materials are cut at a specific ratio from the hopper 1 on the conveyor. The sintered raw material to be cut is added to the mixing cylinder 2a by adding an appropriate amount. The water is mixed and conditioned, and then granulated in a granulation cylinder mixer 2b to form a granulated and sintered raw material having an average particle diameter of 3 〇 '6. Omm. The granulated and sintered raw material is self-disposed on the sintering machine. Machine top Surge hoppers 4, 5 are loaded onto the endless movable sintering machine pallet 8 via the drum feeder 6 and the cutting chute 7, forming a loading layer having a thickness (height) of about 400 to 600 mm. 9 (also referred to as a sintering bed). Thereafter, the carbon material in the charging layer is ignited by an ignition furnace 1 disposed above the loading layer 9. Then, the bellows 11 disposed below the pallet 8 is utilized. Pumping downward, the carbon material in the charging layer is sequentially burned, and the above-mentioned raw materials (including granulated sintered raw 312XP/inventive manual containing simulated particles) are used by using the combustion heat generated at this time. ()) /96-03/95143510 5 1327169 material) combustion and melting 'by this sintering. After that, the burnt formed on the pallet, "layer (burning, 纟σ block) is pulverized - granulated, so that 5 · 〇 The above-mentioned block is recovered as a finished sintered ore. Further, with respect to the above-described method for producing a sintered ore, when the carbon material on the surface of the layer (raw material accumulation layer) is ignited by the ignition furnace, the top layer of the layer is self-shocked. The action of the suction gas sucked by the lower layer is mixed with the carbon in the packed layer It will burn, and the sintering zone gradually moves toward the lower layer and toward the front as the pallet 8 moves. At this time, the moisture in the charged raw material particles evaporates due to the heat generated by the combustion of the carbon material, but is extracted. Soaked to the bottom and concentrated in the raw material of the wet zone at 2 degrees and not rising. When the concentration is increased to a certain extent or more, since the water will fill the gap between the raw material particles of the suction gas flow path, The ventilation resistance is increased. In addition, the ventilation resistance is also increased in the portion of the melting zone necessary for the sintering reaction. The pressure loss and temperature distribution in the sintered layer of the second layer are shown. 2 occupies about half of the entire ventilation resistance of the packed layer, so it is considered that it is effective to at least reduce the ventilation resistance caused by the moisture condensation of the wet belt in order to promote high productivity. As a representative measure of S, a method is proposed in which the water content of the granulated particles is lowered for the purpose of reducing the wet belt itself. Patent Document 1 discloses a method in which a suction fan is provided on a conveyor belt for conveying a granulated and sintered raw material (hereinafter simply referred to as "simulated particles", and a hot air generated by a sintering machine is supplied to the exhaust fan. The raw material is dried in a blower to remove moisture. In Patent Document 2, there is disclosed a method in which a shovel is disposed on a sintering machine 312XP/invention specification (supplement)/96-03/95143510 6 sand storage bucket--will correspond to a total hot air volume of 40 to 70%. The raw material is dried by being introduced, and then charged into a sintering machine, and a hot air is blown into a special portion to dry the raw material. In the search for J document 3, the method of uncovering, seven^ has the following method: the sintered raw material particles are placed under the squeezing treatment to become a specific knot material drying: this; 4 suction hot air 'by this The burning, 虻 is loaded into the sintering machine by the top sand storage bucket. The method of sintering the granulated wind of the raw material to dry it is disclosed. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ However, in any of the above-mentioned conventional methods, the dry powder of the sintered raw material particles is insufficient, and thus the method for producing the sintered ore is still not filled. For example, in the method disclosed in Patent Document i, a fan is disposed on a conveyor belt to dry the hot air flowing material particles generated by the sinter cooler or the like, and in the case of removing moisture, there is the following problem of sintering raw material particles on the conveyor belt. The surface is dry, but the drying does not enter the interior. The X' realistic problem is that the conveyor belt for conveying the sintered raw material particles is operated at a speed of about 6 〇 m/min, and if it is desired to ensure a drying time of several minutes, it is necessary to have an exhaust fan having a length of 360 m or more. On the other hand, if the drying time is to be shortened, the gas temperature must be increased. However, when the temperature 312XP/invention specification (supplement)/96-03/95143510 degree is raised to the above, there is a problem of traveling. 1 The belt has a heat extension and the hot air is bent and the pair of top sand storage buckets... The following problems will also be the same as the above. If the part that is not blown with hot air is dry, η is continuously progressing, and the sand bucket is ^+(3) Progressively, even if the side wall of the top storage η is heated, the sintering particles are evenly burned unevenly on the pallet of the dry junction machine through which the particles are in contact with the side wall and leave the side wall. And the production is not a good problem: the production of sinter particles: Pack::: 3 disclosed in the method of 'slurry raw materials after granulation, from the back of the self-loading layer to supply hot air for drying In the case where the sintered raw material particles are dried in a stationary state, it is possible to prevent the particles from disintegrating when they are left. However, it is necessary to increase the size of the hot air, so that a large cost is required for equipment investment. Further, in the method disclosed in Patent Document 4, in the case where hot air is supplied from the discharge port side of the granulation step for drying, there is a problem in that the granulated sintered raw material particles are easily disintegrated, thereby drying Not enough, it is impossible to perform normal sintering machine operation. That is, the above-mentioned methods of the prior art are all aimed at drying the granulated sintering raw material to reduce the influence of the wet belt, but have not been established as a practical technique. [Inventive content] 312XP/invention specification (supplement)/96-03 /95143510 8 U27169 The object of the present invention is to reduce the wettability in the sintering step of the sintering machine to improve productivity and reduce the amount of carbon used. The inventors of the present invention have conducted repeated studies on solutions to the above problems existing in the prior art, and as a result, have obtained the following findings.八(八1) The water in the granulated and sintered raw material obtained by the sintering raw material processing step is lowered to 4.0% by mass or less, and is placed in a sintering machine to avoid burning in the packed bed (sinter bed) A wet belt is formed under the molten belt, or even if a wet belt is formed, the size of the wet belt (the thickness in the vertical direction and the thickness 2) can be made small, thereby making the ventilation resistance caused by the formation of the wet belt small (8) The sintering speed is increased by the above-mentioned ventilation resistance, and the sintering efficiency is also high. That is, the ventilation resistance of the layer on the pallet can be increased, thereby making the thickness of the sintered bed thicker (the thickness of the layer) Large, causing good knowledge and 'can effectively utilize the loading layer to reduce the amount of carbon material necessary for the manufacture of sinter. The layering heat P can therefore be cut according to the above findings, the present invention provides the following sintered ore (1) A method for producing a sintered ore comprising the steps of: adding water and a water, a binder, and a binder to form a crucible sintering raw material; drying step; To make the above water A 4 η睹曰/ Drying the above-mentioned sinter-sintering raw material to produce "dry granulated and sintered raw material of 4.0 mass % or less: a step of manufacturing the above-mentioned dry granulated and sintered raw material by firing a sintering machine (7) sintered ore, which includes the following Adding to the sintering raw material containing carbon material, pulverizing ♦ ν, adding water and binder, making 312 ΧΡ / invention manual (supplement) / 96-03/95143510 9 1327169 coarse sintering raw materials; Step at least one Qiu Ba Xi Le, * This is the first granulation and sintering raw material of the / knife P knife; drying step, i granulation sintering original: f 2 granulation sintering original 4干燥 〇 % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % % * 造造粒烧社; f material dreams into the sintering machine' and is sintered. w u ' (4) (3) The manufacturing method of the sintered ore disclosed in (2), 1 , the upper step, including sintering the above granulation The raw material is divided into at least 5Q% of the second sintered raw material and the second granulated and sintered raw material of less than 50%. (4) (1) The method for producing a sintered ore according to the above aspect, wherein the drying step comprises drying the granulated and sintered raw material using a mesh enthalpy. (5) The sinter-producing branch as disclosed in (4), the towel, the above steps The granulated sintering raw material is discharged from the side of the sinter sinter of the granulated and sintered raw material from the slewing ring to dry the granulated sintering raw material in the rotary smog: (6) the sinter ore as disclosed in (1) or (2) The granulation step includes granulation by adding water and a binder to a sintering raw material containing a carbon material using a granulator to form a granulated and sintered raw material; and the dried porridge is contained in the granulator The granulation and sintering raw material discharge port side granulation is supplied with a drying heat medium ' to dry the granulated and sintered raw material in the granulator. (7) The method for producing a sintered ore according to (1) or (2), wherein the granulating step comprises granulating a sinter of a carbonaceous material by adding water and a binder to a granulation machine to produce granules. a granulated sintering raw material; the above drying +, comprising a first drying step and a second drying step, the first dry step 312 ΧΡ / invention specification (supplement) / 96-03/95143510 1327169 The discharge port side supplies the drying heat medium to the granulator to dry the granulated and sintered raw material in the granulator, and the second drying step uses the rotary kiln to dry the granulated raw material after the second drying step. (8) The method for producing a sintered ore according to (1) or (2), wherein the drying step comprises drying the granulated and sintered raw material using a medium having a temperature of 2 Torr (TC to 500 ° C). The method for producing a sintered ore as disclosed in (1) or (2), wherein the drying step comprises using the exhaust gas generated by the bellows group located on the side of the discharge side of the sintering machine as heat for drying. (10) The method for producing a sintered ore according to (1) or (2), wherein the drying step comprises using the exhaust gas generated by the sintered ore cooler as a heat medium for drying The method for producing a sintered ore as disclosed in (1) or (2), wherein the binder comprises an organic binder which also has a binder after evaporation of water. (12) The method for producing a sintered ore as disclosed in (11), Danjia, wherein the right machine binder is added in a ratio of 0.01% to 1% of the sintered raw material. (13) 1) or (2) the method for producing a sintered ore, wherein the granulation step comprises sintering the carbonaceous material (14) The method for producing a sintered ore disclosed in (11), wherein the organic binder is a gum substance or a cellulose system. Adding agent & 312XP / invention manual (supplement) / 96·03/95143510 11 W/169

Wherein, the above-mentioned rubber is not π throwing 1 indicating 殁-based cellulose. Wherein the fiber (17), such as the sintered ore disclosed in (1) or (2), comprises an inorganic binder and an organic binder. (18) The method for producing a sintered ore according to (17), wherein the binder is a colloidal substance or a cellulose-based tackifier. The method of producing the sintered ore disclosed in (18), wherein the system is a gum or gum arabic. (8) A method for producing a sintered ore according to (18), wherein the avidin-based tackifier is carboxymethylcellulose. (21) The method for producing a sintered ore as disclosed in (17) is a machine adhesive selected from the group consisting of bentonite, water glass, and Gu Yuyu. Among them, at least one of the group consisting of the above-mentioned waterless glass and pulp_. The method for producing a sintered ore as disclosed in (1) or (2), wherein the granulating step comprises an excess moisture value as compared with an appropriate moisture value required for a raw material used as a sintering raw material. (23) The method for producing a sintered ore according to (1) or (2), wherein the sintering step comprises a layer of at least 600 mm or more. (24) The method for producing a sintered ore according to (1) or (2), further comprising a preliminary drying step of pre-drying the granulated and sintered raw material before the drying step. 312XP/ Inventive specification (supplement)/96-03/95143510 12 1327169 =::, using a dry granulation and sintering raw material, which preliminarily adjusts the moisture of the granulated and sintered raw material particles deposited in the layer to be 4.0 or less. , by which m a. λ> and shoulder removal The formation of the wet belts in the layer is filled, so that the whole layer is filled with mercy-gentleman <hole resistance ^焉' to achieve the finished product k, ·. The production of the mine is greatly improved and the quality is uniformized. Moreover, according to the present invention, since the generation of the wet belt can be reduced or eliminated, in the operation of the sintering machine, the burnt gentleman can be burned a degree (4) T j, and the original layer is loaded into the layer. The thickness (the sintered bed layer d can also reduce the amount of carbon material used for sintering, etc.) [Embodiment] When the machine is operated, it is inevitable that it can be melted and melted in the charging layer of the sintered raw material. The wet belt is produced. The size of the wet belt is reduced by the sintering technique for many years, and the present invention just proposes a technique for compacting the wet wiped belt. First, the experiment of developing the present invention will be described. Fig. 3 shows the granulation. The various simulated particle drying (reducing moisture) is used to adjust the result of how the sintering operation changes. In this experiment, water and a binder are added to the sintering raw material containing carbon material, and one particle is used in a high-speed mixer. Thereafter, Made The simulated particles of the granular sintered raw material were dried or not dried. In order to avoid the disintegration of the simulated particles, they were manually loaded (hand-loaded) into a test pot and sintered, and the air permeability and the sintering time at this time were investigated. In addition, it is the same as the granulation method by the method of the cylinder mixer by the method of the above-mentioned high-speed agitator, and the result is the same. Fig. 3 (a) is usually the case where sintering of water and a binder is added to the sintering raw material containing a carbon material. The raw lime used, and the granulated simulated particle dry 312XP/invention specification (supplement)/96-03/95143510 13 1327169 is dried, and the result is directly put into a sintering test pot for sintering, which is the case The lower ventilation index (penalty) is 15. The standard sintering time is 145 minutes. Further, the moisture of the granulated simulated particles is usually 6% by mass. 3(b), in the same manner as in FIG. 3(a), the granulated simulated particles are placed in a test pot, and naturally dried in this state to reduce the water content to 1% by mass, and thereafter, directly A sintering test was conducted in this state. After the test pot was placed, the result of drying was carried out at rest. The simulated particles were disintegrated during the drying process. The venting index (sentence) at the time of sintering was 20.5 s. The standard sintering time was 1 〇. 5 minutes. That is, the (5) condition of the so-called "wet-wet" sintering (load-drying) ideal series which is sufficient to reduce the wetted zone of the sintering process by the (4) drying to sufficiently remove the granulated moisture, compared with (a), ventilation Sexual improvement (10), sintering time is also reduced by about 30%. However, in order to realize the condition by the actual machine sintering apparatus, the granulated raw material is placed on the sintered tray and then dried, and then sintered, which is difficult to use in actual operation. That is, in a solid-state sintering machine that performs large-scale production and continuous operation, operation cannot be achieved. Therefore, it is considered that if the sintered raw material after granulation is temporarily dried and then placed in a sintered tray for sintering, this problem does not occur, and the example of Fig. 3(c) is dried after granulation (moisture is i mass%), in order to reduce the drying of the simulated particle disintegration 'hands to the test steel by hand, and to perform sintering. However, in this case, at the time of granulation of the sintered raw material, water and quicklime are added as in the above examples. As a result, the ventilation index (; 汕) was 12, and the standard sintering time was 18. 0 minutes' (compared to (8), the results of the aeration and sintering time were 312XP/invention specification (supplement)/96-03/95143510 14 1327169 The second difference (c) is due to the fact that when loaded with a hand, it also produces a solution of the simulated particles after drying. It is presumed that the difference between the two is related to the change in the intensity of the simulated particles as a function of drying, i.e., the difference in the tensile strength σ of the granules represented by the following formula (1). Fig. 3(d) shows an example of the addition of water to the sinter raw material, and the organic binder which maintains the tensile strength σ of the granules at a higher value as a binder after drying, and other conditions ( c) Same as the sintering. In the case of ~If, the ventilation index (JPU) is ^9·6, and the standard sintering time is 10.9 minutes, and substantially the same result as (b) can be obtained. According to the results, it is found that the reduction of the wet band of the sintering process (/x of the wet band forming region) is effective, and the granules are also pulled to a high strength after drying. This issue (4) is based on the above-mentioned findings, and currently, the sintering machine towel operated in China, the large-scale sintering machine of 200 m2 or more is the mainstream, and can also process raw materials of about 3 〇 0 t / h. However, for this reason, it is necessary to suppress (reduction) the wet belt generation, in particular, not only to pre-dry the granulated and sintered raw material to be charged (hereinafter, sometimes only abbreviated as "simulated particles"), and This drying must be carried out uniformly and efficiently. = Drying technique for sintered raw material particles containing a large amount of moisture, and various methods are representative of the methods shown in Table 1 and *? and Table 2. Here, Table 1 lists the means for drying the granular bodies classified according to the heat transfer method and the material movement method. In terms of versatility, convection heat transfer and conduction transfer are often used. In addition, there are also eight ways of radiating heat transfer and microwave, but the reason for thick (four) stupid card is that the radiation heat transfer method must make the layer thinner. On the other hand, the microwave side + gentry In the tens of thousands of types, the granules (simulated particles) granulated by the 312X?/invention manual (supplement)/96-03/95143510 15 1327169 generate particles to disintegrate and burst.

16 312XP/Invention Manual (supplement)/96-03/95143510 1327169 Table 1

Convection heat transfer method Conduction heat transfer method Radiation heat transfer mode Other methods Material setting type box type parallel flow box type air flow box type shed type vacuum, vacuum freeze box type shed type vacuum, vacuum freeze microwave box type material transfer type parallel Flow belt flow air tube dryer vacuum tray infrared channel infrared belt microwave heating belt material stirring type flow layer rotary trough type stirring heating tube built-in inverted cone stirring type microwave heating stirring hot air conveying type spray type airflow type 17 312XP/ Invention specification (supplement)/96-03/95143510 1327169

ώ ώ im im im im im im im im im im im im im im im im im im im im im im im im im im im im im Advising the line is generally 瑕叻娜格 f grate type CDQ drying plate rotary kiln 1 1 M ο. God's Battle m I c 11? II ii SI i 11 if Μ I 〇〇If! 1 s ^ iii ill ά 1 l έ |i ii li 1 5 SS ο 1 - 111 ill εη θ © Λ every 111 111 • -δ- s shouting ♦ ·δ> θ Divination. Restaurant vi ^ vi -τ» Φ-ι ^ Μ 'm get 111 1 1 Weng 1 毫i 11 1| || Due to the heat transfer between the particles and the heat ®, the treatment can be reluctant. 0 *~ _ riiii ilip ^超泼¢1苟〇II |1 If fm Μ m 1 I 1. |1 !| 8T Sharp 20~30 25-40 1_ 20M0 30 ~50 40~€0 50 ~65 40 -70 40-55 40-70 跋 ct) 100-150 100-150 100 ～200 200-300 100-200 100-600 200-600 200-450 400~€00 Layer thickness α(αη)% product ratio φ (%) ε I OJ II CS3 Z=5 〜15cm Z= 5~15cm g 卜 I Ο LO II -θ- Z = 2 〜10cm 10~100/time 10~30cm/continuous Φ = 7~30% Φ : 1% or less ψ = 1 ～23⁄4 MiiCm/s) 0.5-3.0 0.5-1.2 0· 5 ～3.0 0.3-0.6 0.3-1.5 0.5~2·0 0.3 〜 1.0 20 ～10 Heat transfer mode box type flat box type 1 ^scmM Lai layer #: 1 Confucian mmm 1 1 mmm musm 001 01 s6/s.96/(47}*)gBI^Ka 鹩/dx2ε 1327169 CQ I CM Remark 1_ Processing speed becomes a problem The ability to handle large particles is a problem. Case -S € Reserve $ 1 pen Dragon. Real 1^5 width, w. 1 邾 邾 煞 煞 煞 煞 煞 煞 煞 煞 煞 0 0 0 0 珐 珐 珐 珐 妗 妗 妗 妗 妗 妗 妗 0 0 0 0 0 0 0 0 0 0 fx.t w > N i 1 %.海|ιι Μ >€矣t ^ ^ ^ * SI: ? i > Λ #: ^ ^ ^ Us{伽1泥远戚画 c -3⁄4 ^ 挺Γ 'CH ** 困生碱隶回举0敢ΌΠ f * # Μ -δ- a$ {4f t ° 馇ψ ^ i 〇S *> s , 0Π 谢 * 嫦 ¥ 3 Zhao Bo i $ § m. V0 旌: sleepy. € -3⁄4 w ε ^ ^-Η 0 m 70 ~85 1 〇70 〜85 j 50 〜75 V0 Shake 100~150 1_ 100~150 1 100~150 100-150 Θ- % gt- \ ΙΟ 60-80% 20-30% 80-95% Raw material thickness 0.3~1.5 faces/"Ν & % I 50-300 50-300 CO 1 CM 100-300 Drying time 5~60 seconds Conduction heat transfer method Rounding off slot Type mixing heating tube built-in rotary dryer inverted cone cake dryer material disturbing type heating surface close connection transport type 61 o-εΗ s6/s-96/$ difficult) 睬 睬 s difficult / dXZ i ε 1327169 Table 1 Among the various modes shown, the representative convection pass mode = machine (box type parallel flow, box type flow type) is a material setting type that uses hot air to dry the stationary material in the dryer = = room size In the test operation, it is not suitable for the sintering machine = :, the dryer system of the Chuanzhong multi-stage ventilation belt = the material is stowed on the mesh belt / perforated plate, so that the hot air J = / Ding dry no way. This technique allows the granules to be dried for a large amount of processing during transfer. However, in order to perform uniform drying, the thickness of the whole material is thin, so the equipment becomes larger and larger, which means that it is a layered dry type of material stirring type in Table 2_A:: good contact between the child and hot air, heat conduction Fast, so the processing ability is strong, the solution, the big 'on the way to drying, the granulation of the simulated particles after the disintegration is not suitable for particles such as iron ore. Further, it is a rotary type dryer which is a type of rotation type. This method is used for a long time, is strong, and has excellent heat resistance. Therefore, it is currently used as a technique for continuous drying of a large amount of temperature. Further, the spray dryer which is not used as a hot air transfer type is sprayed on a fine particle slurry by a solution or a donation, and is dried in a manner of 5 to 3 seconds before falling to the bottom. Such a spray dryer is a technique in which a block-shaped or U-shaped material is dispersed and dried while being trapped in a high-heat gas stream when wet, and there is a problem that the treatment ability cannot be enhanced. Furthermore, there is also a material agitation type and a heating surface in a heat transfer mode, which are dried by the method of mixing or drying, or after drying, 312XP/invention specification (supplement)/96〇3/95i435i〇 2〇1327169 The method of removal is therefore not suitable for sintering machines. According to the above-mentioned Table 1, the material is disturbed by the material, so the drying method of the flow and the square particles is such that the ua-type and the conduction heat transfer method are suitable for a large amount, and when economical or thermal efficiency is studied, there is ^The problem of disintegration', but when using the material (four) type, the convective heat transfer mode is summarized in the second table, and the convective heat transfer mode and the conduction heat transfer method are summarized. The results of the table 2 are analyzed. Fang, 'especially dry means, effective for the use of rotary squatting.

:: In terms of economy and thermal efficiency, it is better to use the method of the Swing Party, which uses the above-mentioned various dryers to use 300 t/h Zuogu == sintering material of the simulated material. The hot air recovered by the ore cooler generated by the sintering machine can be used as a heat source. ; &s month, using smouldering to granulate and sinter raw materials, adjusting by =, or using a cylinder mixer as a granulator to add water and a binder to a carbon-containing material for granulation. Step 4, | 5 knife 'heated and dried to adjust the moisture. The hair of Fig. 4: Ϊ理之: shows that it is set back to the downstream of the granulator in the existing sintering step, and ################################################### In the commonality of Fig. 1, the same component symbol is used for the drying of the simulated particles of the rotary smoke. Preferably, the hot air of 2GGm is placed in the E as the heat for drying, and the heat is dried. The rotary kiln in the machine is supplied as a sintering raw material 312XP / invention manual (supplement) / 96 · 〇 3 / 95 丨 435 丨〇 21 1327169 $ on: simulated particles 'and in the direction of movement with the simulated particles = direction The hot air is supplied to the outlet of the slewing hole, and is dried by the convection heat transfer. Further, it is dried ~. The disintegration (burst) of the simulated particles is caused by the drying and drying in this manner. The conversion particles rotate in the inner side, and the inner side rotates. First, the sleeve i: the kiln rotates itself, so the mold wind advances in step-by-step contact, thereby realizing (4) drying and charging as the above-mentioned drying heat medium, and the sintering machine can be used. Or, the exhaust gas produced by the mine cooler (10) The use of = mi is in the vicinity of the rotary smoke of the dryer, and there is a source of exhaust gas (burning, a windbox group on the side of the mine discharge side or a sinter cooler), so that it can be easily utilized at low cost. The exhaust gas which is disposed in the exhaust gas is supplied to the piping, etc. The exhaust gas of the heat medium for drying can be used as it is, or it can be used as a hot air of a specific temperature after being diluted. Further, according to research by the inventors, it is known that the smoke is rotated. In the case where the simulated particles are dried using the exhaust gas of about 350 C, the central portion is transferred to the center portion, so that the center portion can be effectively dried even in a short period of time of about 3 to 6 minutes. It is sufficient that the residence time in the inside is about 6 minutes, and even if the rotary burr is placed on the downstream side of the granulator, the operation of the sintering machine is not hindered. Further, the use of the exhaust gas contributes to the cost reduction of the sinter production, but As a way to achieve the same drying, it is also possible to provide a heating device on the outer circumference of the rotating portion to heat the rotating smoked wall to dry the simulated particles. 312χρ/发明发明(补件)/9孚〇3/9514351 〇22 Ijz/ioy = When the rotating particles are spoiled in the rotating smoke to make them dry, because the two particles collide with each other, the simulated particles may cause the following problems to be discussed. (ϊ) The study of the simulated particles which can be subjected to the drying step is to solve the above problems in the drying process. First, the research is carried out. The gentleman smashes the granules into the yf eight, and the fruit is in the present invention. The plaques used in granulation can also maintain the strength of the simulated particles. The mixture:: two hairs can also play the role of a binder organic _ mixture of two organic binders and has been used for (5) The reason is that if such a mixture is used, it can be used to create strong simulated particles, and it can lose water and stagnation due to drying, and it can be corrected by P*! As a result, the simulated particles which maintain the average particle size after drying can be loaded into the sintering machine, and can be eliminated from the calcination or the methane produced by the h. When the adhesive used in the present invention is selected, the adhesive used in the present invention is selected as the adhesive used in the present invention, and -% ^ ^ ^ ^ is called to pay attention to the tensile strength of the drawn body after drying. . Specifically, as shown in (1), it is shown that the strength of the cross-linking (4) of the adhesive or the like is the sum of the following resistances. Moreover, it can be seen that the resistance of the external force caused by the mass/degree of the external matter depends on the cross-linking substance (that is, the degree of viscosity of the cross-linking agent on the powder powder) is larger. When the viscosity of the agent is high, the tensile strength is increased, and it becomes difficult to disintegrate as a granulated particle of granules. 312XP/Invention Manual (supplement)/96-03/95143510 23 丄327169 y

μ R X 2 External resistance of the capillary force of the suction force Here, σ is the tensile strength of the granule, the surface tension of the crosslinked substance, 0 is the contact angle with the powder, # is the crosslinked substance The viscosity, s _ is the surface area of the powder, ψ is the liquid fullness (= 〇. 6), ε is the void ratio of the granule, D is the specific diameter of the specific surface area, and a is the radius of curvature of the crosslinked liquid. The moon-receiving person waited for the relationship between the viscosity of the adhesive at the time of granulation and the strength of the granules, and found that when the organic binder is used, strong simulated particles can be produced at the time of granulation, and are lost due to drying. After the water is removed, the particles can be surely prevented from disintegrating. As a result, after drying, the simulated particles having the average particle size at the time of granulation can be placed on the support plate of the sintering machine, and the above-mentioned production can be carried out by using a rotary burr. When the sinter raw material is dried to adjust the moisture, if an organic binder is used in the granulation, the strength of the simulated particle drying can be obtained from the granulation stage, so that the person who made the slewing In the granulation side, f is supplied to the granulated particle discharge port side to supply the drying heat medium, whereby the process from self-granulation to drying can be performed by single-rotation. Further, as an organic binder capable of producing strong simulated particles at the time of granulation and capable of reliably preventing particle disintegration after drying by removing water, it is possible to use a colloidal substance or a cellulose-based substance which is a t-type polysaccharide. Sticky 312XP / invention manual (supplement) / 96-03 / 95143510 24 ^ 27169 agent, etc. and the above gelatinous substance can use ancient gum or gum arabic. Further, the organic binder may be used alone, or a combination of several binders may be used in addition to the use of the above-mentioned colloidal substance or cellulose-based tackifier, and 1乍 is a dispersing enhancer of a tackifier. Further, a substance having a carboxylic acid group or an inorganic binder containing the following bentonite or water glass may be used in combination. Fig. 5 is a graph showing changes in the cumulative ratio of particle diameters before and after drying of a sintered raw material (simulated particles) 2 granulated with different binders. For example, when _ = granules, water is added to the sinter raw material and as a binder. quicklime. The granulated particle size distribution of the coarse granules on the side of the kiln is disintegrated due to the drying and rotation in the rotary kiln. Therefore, the fine granules on the kiln side of the rotary kiln are increased more: that is, it is known that the above-mentioned Fig. 3 (c) ) The state shown. 5(b) is an example of using an gum arabic of the f-type f as an organic binder, instead of the quicklime in the above (a) as a point compound, and (10) (10) methylcellulose using a cellulose-based tackifier. "Empty...". Under no circumstances can you see that there is any change in the cumulative ratio of particle size on the slewing head, side, and side, that is, the drying and rotation of the two or two turns 2 will not cause The particle collapses to enter the crucible, and the state of Figure 3(d) above can be achieved. The addition amount is 0.01皙詈μ., the addition effect of Labo gum, 1 2 f is the θ0/8 limit of the colloidal substance according to the adding cost. However, if ϊ η new:;. If - unsolved 01% by mass, after the drying step, it can be observed that the simulated addition effect is about the sum of U mass %. More preferably S5 is 2.05~0.5 mass is m3f ^ Fan, on the other hand, the same as the gum arabic, the amount added is 0 01 quality ^ 312XP / invention instructions (supplement) / 96_〇 3/9514351 〇 ^ = plus: ί 生: for the cellulose-based tackifier C未 纤维素 纤维素 : : 质 质 : : : : : : : : : : : : : : : : : : : 4 4 4 4 4 4 4 4 4 After the drying step, ~5 5 of the simulated particles can be observed; the force is substantially saturated at h% by mass. The preferred range is 0.05% by mass, more preferably 0·1 to 0.3% by mass. Figure 5(c) For example, the gum arabic produced by the world's gum arabic is described in (8). The gum arabic used in the same neutral polysaccharides. If it is used directly, as shown in (e), The granulated particles of the coarse particles in the second side of the kiln are disintegrated due to the drying and turning in the rotary kiln, and the fine particles in the kiln side are increased, but the granulated water is added after the addition and mixing of the guar gum. Granulation, so it shows almost the same change as the gum arabic of (b): It is therefore confirmed that the gum can be used. When the effect of the gum is added, it is the same as the gum arabic, and the amount added is 〇.〇1 The mass is 4% or more, and the upper limit is 1% by mass based on the cost of addition. If it is less than 0.01% by mass, the disintegration of the mold-like particles can be observed after the drying step, and the effect of addition is 1% by mass. The time is substantially saturated, and the range is preferably 0.05 to 0.5% by mass, more preferably 〇" to 〇3% by mass. As described above, a gum-based substance or a cellulose-based tackifier can be suitably used as an organic binder. Further, when an organic binder such as gum arabic or guar gum or CMC is used, it is preferably added directly in a powder state. When it is dissolved in water and added to the sintered raw material, the organic binder is attached to the granules in a coating state to complete granulation, so that the amount of addition must be increased. Therefore, it is preferred to add an organic binder in a powder state, and add granulated water to carry out mixing, granulation, or 312XP/invention specification (supplement)/96-03/95143510 26:327169, added in a powder state. The organic binder is mixed and then granulated water is added for granulation, whereby the organic binder is in a suspended state, and the strength can be exhibited in a small amount. Figures 6 and 7 show the effect of the state of the binder on the granulation strength,

Further, in the case of using an organic binder such as gum arabic, guar gum or CMC, if it is directly added in a powder state, the granulation strength can be improved. That is, the '® 6 series schematically indicates the distribution state of the binder in the powder-filled layer, (a) indicates the case where the wettability is not present, or the state in which the powder binder is added to the powder (segregation state), (b) shows the state of the pan-wet state (overhanging state), and (c) shows the state of the coating layer (generated in a state where the binder is dissolved in advance). Further, Fig. 7 shows the relationship between the bonding strength of the overhanging state and the bonding strength of the coating state ("Engineering Ceramics"), the vertical axis (s/s〇) is (molded body strength/adhesive strength), and the horizontal axis is bonded. The amount of agent added. As is apparent from Fig. 7, even if the amount of the binder added is the same, the overhanging state (suspended bonding) can obtain several times the strength of the molded body as compared with the state of the coating (coating-like bonding). Therefore, when an organic binder such as gum arabic or gujic gum or CMC is used as described above, if the granulation is directly added in the form of a powder, the organic binder is not completely dissolved in the granulated water, resulting in FIG. 6(b). The situation shows the effect of strength improvement. That is, in this case, even if the amount of the binder added is the same, the strength can be several times, so that a small amount of the organic binder can be added to achieve high strength. The reason for this is that, after granulation, the drying resistance can be achieved by adding a small amount of an organic binder. Further, in order to realize the present invention at a low cost, the inventors and the like have studied the addition method of the organic binder which can be added to the 312XP/invention specification (supplement)/96-03/95143510 丄327169=additional amount to (4) Fig. 8 ( a) indicates a state in which it is added and mixed in a powder state, and then granulated water is added or powder is added together: ::((1) and also in the case of water, in which case there is a majority in the organic binder The voids and the binder invade the yt ore (also in the state of the package), and as a result, it is found that the granulation strength I) ((2) the dose is reduced ((3) state). The adhesion of the ore surface is therefore further studied based on the result. The addition method of adding the granulated water and then adding the binder 'head 8(b) is used to further reduce the stickiness and the binder to realize the present invention. The method is in advance = low cost state) Adding a binder to make voids in the Erguang stone ((1) The surface of the town stone is fixed with a binder ((3):::=, fixed with a binder, so that the particles are smashed ~), on the surface of the ore ^ Shape (simulated particles) strong yield two:; improved 'and more Highly effective bonding dose, it can:: 2! Reduce the intrinsic particle strength of the intrusion into the ore void. Add I to achieve the anti-drying granulation mold and then 'in order to be more realistic, in the burning of the above-mentioned carbon material The method is characterized in that, in the case of granules, granulation is carried out with excess water value used as a raw material for sintering: raw material two: water and a binder; ?/Inventive manual (supplement) / 96_03/9514351 〇 'Excessive granulation water will lead to the expansion of the wet zone. Therefore, usually = 28 1327169 : 'The amount of granulated water added during the granulation of the sintered raw material is limited to The above-mentioned appropriate moisture value in the present invention refers to, for example, pre-requisite moisture used in granulation of each ore, and the raw material is sintered after the granulation of the ore is granulated. The average of the necessary moisture content of the combination or the ore suitable for poor wetness: The score 'this water value is usually in the range of 5·5~7.5 mass% ❶本:: It is said that when adding an organic binder, the current appropriate The moisture value is shown in Figure 9(a). In order to achieve the granulation of _ 9 (b), the granulated water is added during the research. (8) indicates that the organic binder powder is added at the same time and the granulated water is added. If the granulated water is added in excess of the appropriate moisture, the granulated water will be added. It is fully distributed on the sintered raw material (state of (1)), so it has sufficient moisture after granulation (state of (2)), eliminating the insufficient scatter of granulated water, and there will be no organic binder added. In the state of full concern, in the present invention, even if the granulated water is increased, since the simulated particles are dried after granulation, there is no adverse effect on the sintering operation. The moisture value of the score and excess is the granulated moisture value which is 1 to 3 mass% higher than the value in the range of 5.5 to 75 mass% for the sintering operation of the hanging method. If the amount is less than 1% by mass, the above effect cannot be exhibited, so it is sb or more. On the other hand, the upper limit value may be obtained in a region where the granulation simulation is a sub-J domain and the slurry is not reached. However, if the water content is excessively increased, the cost necessary for drying increases. Therefore, it is preferable in practical use that the excess water is 3% by mass or less. More preferably, the sintering operation of the usual method is in the range of 5. 5 to 7. 5 mass%, compared to this, i 2 to 2 mass% 312 ΧΡ / invention specification (supplement) / 96·03/95143510 29 Excess water content. It is no problem to choose a free benton hair conditioner. The above inorganic binders are used in combination. When it is selected from the group consisting of bentonite and water, it is effective for organic bonding and the use of the material as a result of the effect of the organic point and the amount of the sword, and the combination of the four layers of the organic binder is added. Reduce the effect of the mediation agent. The CMC of the ageing agent at the time of the soil expansion and the inorganic point mixture agent will be blocked:]=;=Fig. And the granulated water - and the added bentonite other organic binder ^ also S cuts the effect of (10) added amount. And adding == 吏 用 用 = = = = = = = = = = = = = = = = = 。 。 。 。 。 。 。 。 。 。 Comparative Example 1 is an example in which the conventional method is used as a binder. In this example, a sintering test is performed to prevent disintegration of the granulated dummy particles during drying without drying. Further, in the first to third embodiments, the use of the guar gum, the gum arabic, the CMC ° < an organic binder, the organic binder is added in an amount of 0. 10% by mass, resistant to moisture 7.5 mass% to dry moisture is ~2·1% by mass of the drying' and the sintering time is shortened by 2〇~30%. Further, in Inventive Examples 4 and 5 in which a mixture of excess water and an inorganic binder was used, although the amount of the organic binder used was less than that of Invention Examples 1 to 3, it was confirmed that the simulated particle harmonic diameter was increased and the sintering time was It is also shortened by 33 to 37%, so it is possible to confirm the reduction in the amount of organic binder added and the effect of greatly improving productivity. 0 312XP/Invention Manual (supplement)/96-03/95143510 30 1327169

Co< Inventive Example 5 (combination of organic binder and inorganic binder) and use example: inorganic binder: benton CMC: 0. 05 bentonite 0.10 〇CD L〇od CO (ΝΪ 1.85 CO CD CO 1 < LO DO Oi Inventive Example 4 Granulation using organic binder and excess water (CMC + bentonite) i_ CMC : 0. 05 Expanded soil 0.10 〇CO LO Bu · m oi OO r—Η 13.8 ◦ t I οά Inventive Example 3 Organic bonding Agent (CMC) 〇g CO LO 〇·* OO r-i LO CN3 s csi Inventive Example 2 Organic binder (Arabic gum) ◦ c=i 〇CO LO ... oo οά LO L〇iri r-^ s CO* Inventive Example 1 Organic binder (Guiya gum) CD 〇· 〇CO LO Bu·oo OB CO 16.0 1.85 Comparative example 1 Inorganic binder (lime) ΙΛ c<ig CO LO Bu·7.5 (undried) LT5 r H 80.1 20.7 1.05 1 Adhesive type drying method (using adhesive) Adhesive addition amount (mass 90 Raw material layer thickness (mm) Carbon material amount (% by mass) Adding moisture (% by mass) Moisture after drying (% by mass) Average air volume :(m3/min) Yield (8) Sintering time (minutes) Simulated particle harmonic diameter (mm) I ε 2 ss s6/s-96/ffiii)llis^&i3 flip/Jxrs t ε 1327169 /, an organic binder which can be used, for example, an organic binder which can be listed = an organic binder which has a hydroxyl group, etc. The selection of the binder and the organic binder It can be appropriately determined by considering the adaptability to the sintering raw material. When you use an organic binder, it is preferable to avoid the use of the quicklime and the fiber. The reason is that if it is used together with the quicklime, the colloidal substance, The slow acid group of the eutrophic acid viscous agent reacts with the ionic ions contained in the quicklime to reduce the effect of the binder, and the granulation property is lowered, resulting in deterioration of the air permeability. When the organic binder is used, the organic binder is reduced. In order to achieve, it is preferable to reduce or control the use of the raw material as a raw material for the sintering. The porous binder is absorbed into the porous body to reduce the effect. When it is:::: and: When the binder is insufficient, the temperature of the heat medium and the moisture content of the simulated particles are studied in π, and the temperature of the heat medium must be set to simulate Granule; when liter/JDL' does not cause the mold The disintegration or bursting of the particles is now carried out in the latter part of the granulator, and then the original drying is carried out. When the original drying is carried out, the heat medium in the original drying can be used in a dry form which is not subjected to preliminary drying. High temperature heat medium. That is, a drying form in which 8 (TC or more of a heat medium, preferably 10 or more generations of heat medium) is used for preliminary drying, and the drying temperature is gradually increased by using more than 2 = 2 in the original drying. Of course, it is not necessary to dry and dry (4) H. It can also be dried using the above heat medium. 312χρ/Invention Manual (Supplement)/96-03/95143510 Magic ijz/ioy Applied to these dry adhesives, The size of the binder or organic ', σ, and drying equipment is appropriately determined. Burning::dU indicates the degree of dryness of the simulated particles on the simulated particles (mass «and the burning of the particles without the water particles of the particles) Γ). According to Fig. 11, the age of the above-mentioned sputum media is rapidly shortened. Therefore, the water content of the π/ to the sensible particles becomes 4, which must have the quality of the drying step. The step is for drying the granulated and sintered raw material to form a dry granulated and sintered raw material containing a 4.0 ° knife. The preferred moisture content is 3 or less, more preferably 2% by mass or less. Right granulation obtained by the sintering raw material processing step I sound 1 drops 3 water I drops to 4·0 mass% or less', because it is put into a sintering machine and is not generated under the combustion-melting zone of the manned gentleman & a (I, , , , bed) Wet / 3 15 will produce a wet belt, and the size of the wet belt (thickness f above and below) can be reduced. The result is that 'not only the wet belt can be formed, but the venting resistance f is reduced' and the sintering speed is made. Improve, which can improve the production efficiency of your main K. In turn, the sintering operation with the same ventilation resistance can also increase the thickness of the sintered bed (loading layer thickness), so that the yield can be achieved, and 'The heat of the upper layer of the layer can be effectively utilized, so the amount of carbon material necessary for the manufacture of the sinter can be reduced.

Figure 12 shows the relationship between the ratio of the coagulation material representing the amount of carbon material and the drum strength representing the sintering strength. Generally, when the amount of the carbon material (five) is reduced, the strength of the sinter is reduced, and the layer thickness and the strength of the sinter are The relationship is shown in Figure U 312XP / Invention Manual (supplement) / 96-03/9514351 〇 ^ 1327169 Let the wet: reduce the ventilation resistance of the belt 'significantly reduce the 'effect on the pallet'. 1 When the thickness of the sintered bed (the thickness of the layer is increased), the heat in the upper layer of the layer can be added. Therefore, the strength of the sintered ore can be increased, and the carbon material h necessary for the manufacture of the sintered ore can be reduced. (3) The heat medium The type and the drying method are studied in the rotary kiln to rotate the particles and enter the exhaust gas of the medium. The drying heat used in each of the main n., /, and the service degree simultaneously simulates the rapid evaporation of water in the particles. (disintegration). Furthermore, the possibility that the simulated particles are better than each other is also large. In this case, = is used for the convection supply from the slewing and venting outlet side, and is used for the hot air which is diluted and becomes an appropriate temperature. When the 4 S agent is mixed in the simulated particles containing the sintered raw material of the carbon material for granulation, if the pseudo particles are subjected to preliminary drying, then the half chamber portion of the granulation mode is described in Drying, then Lai (4) with pre-drying #进订拌--, in the above-mentioned rotary smoked and transferred to the original, the treatment of the 'defective' when the _ mixture is granulated, in addition to the upper stage) After the second half of the granulation (the granulation after the white slave J, nk pre-injury drying, the original dry blasting crack prevention... the drying process during the drying process to prevent bursting, can also play an effective role. The second half of the granulator Part of the preliminary drying described above may also be performed by heating the simulated particles in the smashing kiln to stop the heating, and the reason is that the pre-heating of the shovel is supplied to the shovel and the pre-drying is increased. The operation is the same, followed by the above 312 ΧΡ / invention specification (supplement) / 96-03 / 95143510 34 1327169 = mixing and drying of the drying process in the order of simulated particle heating and drying process, thus reducing or Prevent the above rotary kiln from stirring In the present invention, the pre-drying which is added during the granulation process can be directly used as the original drying treatment. That is, the following method can also be used: in the production of sinter, in the case of containing carbon Adding water to the sinter raw material particles and granulating with δ γ to carry out mixing and granulation, and drying the granules of the granules in the second half of the granulation step, and removing the water until the 〇 mass % or less is reached, and thereafter Sintering is carried out on a sintering machine pallet. When the above-mentioned preliminary drying is used as the original drying, it is desirable to make the addition amount of the one-system adhesive in the granulation process higher than the above-mentioned pre-drying and original drying k-grain process. The organic binder dose is such that the strength of the simulated particles is increased to resist disintegration during the drying process. That is, it is preferred to use an organic binder to increase the strength of the simulated particles during the process of the granules so that _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A part of the rotary tamper is dried to make the moisture content of 4.0% by volume or less, and the partially dried simulated particles after dehydration and the remaining undried simulated particles are mixed, and then the mixture is charged into the knotting machine. Sintering is carried out on the pallet. That is, the method is to rotate a part of the granulated simulated particles in a drying step by using a rotary kiln, and thereafter 'mixing with the simulated particles not to be dried, thereby making the drying step The disintegration portion of the generated simulated particles is harmlessly attached to the mixed 312XP/invention specification (supplement)/96·03/9514351〇35 1327169, so that the fine powder in the simulated particles is partially reduced. In the case of mixing treatment, it will change, and the use of the rotation for the large Dan ^ (4) is also effective. Moreover, when the part of the simulated particle is made, the mixing operation of the rotary kiln of the rotary kiln can be used to realize the uniform hook 4, and the moisture content of the simulated particle after the dry process is low, so the wet zone is The formation is shrunk and there is no problem in the sintering operation. Next, '❹® 14' is used to illustrate an example of a dry model that is effective for reducing the wet zone and that is suitable for the present invention. Fig. 14 (a) is a representative application example of the sintering treatment of the present invention shown by the method 4 of drying the granulated dummy particles by the rotation f. Fig. 14 (b) is a granulation using a mixing cylinder mixer In the step of sequentially performing the sintering raw material particle treatment by the cylinder mixer, the hot medium is supplied from the discharge port side on the side of the granulation cylinder mixer and dried. In this dry form, the drying load applied to the simulated particles during drying is excessively large. Therefore, it is desirable to increase the amount of the organic binder more than the other (a), (c) to (e), and to improve the simulation. The case of particle strength. (c) of FIG. 14 is a configuration in which the granulation cylinder mixer is substantially expanded (long-length mixer) to reduce the drying load, and the heat medium is introduced from the discharge port side to be dried. . If the doubling cylinder mixer is configured in this manner, the granulation is completed in the first half of the granulation cylinder mixer, and the simulated particles after the granulation is completed are then transferred with the rotation of the granulation mixer. In the process of going to the discharge side, it is gradually contacted with the heat medium to dry, so it can be extended to make the simulated particles moisture 312XP/invention specification (supplement)/96-03/95143510 36 compared with the above (b) example. 1327169

The organic binder is also reduced in comparison with (b), in addition to reducing the disintegration of the simulated particles for a certain degree of time and reducing the dry load applied to the simulated particles. S Fig. 14(d) shows an example in which the hot medium is introduced into a rotary kiln for drying, and is also dried in the granulation stage. This method is a method in which the granulation cylinder is mixed and the heat medium is supplied to the side to perform preliminary drying. Therefore, it is an effective means for avoiding the rapid drying of the rotary kiln side and causing the particles to disintegrate. That is, according to this method, the dry load applied to the simulated particles gradually increases, so that the disintegration of the simulated particles can be greatly reduced. In this example, the heat medium supplied to the rotary kiln is independent of the heat medium supplied to the pulverizing cylinder mixer because the reuse of the aqueous heat medium is prevented in order to control the supply temperature of each of the heat medium. Fig. 14 (e) shows an example of use of a mixing mixer for a mixture of a mixing cylinder mixer and a granulation cylinder mixer, and a drying rotary kiln for supplying heat after the cylinder mixer for sintering. An example of drying with a medium. Further, Fig. 15 shows a mixing cylinder mixer in which only one portion of the granulated and sintered raw material is dried, and the granulated and sintered raw material which has not been dried in other portions is supplied to the downstream of the discharge port side of the rotary kiln for drying. And use the two to mix examples. In order to uniformly sift the simulated particles after drying, the sintered raw material powder which is disintegrated and pulverized during drying can be adhered to the simulated particles to facilitate formation of a uniformly distributed packed layer. According to the method for producing a sintered ore of the present invention described above, it is easy to make the water content of the pseudo particles to be 4.0% by mass or less, and it is easy to achieve a reduction in the wetting band which the manufacturer desires for many years. (Example) 312XP/Invention Manual (Supplement)/96-03/95143510 37 1327169 (Comparative Examples 1 and 2) Comparative Example 1 uses the skirt shown in Fig. 1 disclosed in Patent Document 4 to introduce the exhaust gas to An example of a granulation device for drying a sintered raw material. In other words, in the drying method of Comparative Example 1, the sintering raw material is mixed (mixing cylinder mixer 2a) and granulated (granulation mixer 2b) via an inorganic binder to produce a simulated particle. The high-pressure exhaust gas in the latter half of the sintering machine or the waste crucible of the sintered ore cooler 12 is supplied as a heat medium to the simulated particle discharge side of the cylindrical mixer 2b, and is dried in the granulation cylinder mixer 2b. . In this comparative example, only an inorganic binder such as slaked lime or quicklime or bentonite was used, and a steel test was carried out using a combination of usual sintered raw materials. Further, in the example in which the same materials as in Comparative Example 1 were used in the same manner as in the following examples of the present invention, the raw material particles were sintered in the granulation cylinder mixer 2b in the example of drying using the apparatus shown in Fig. 4 . Exhaust gas (heat medium) is contacted, and during the drying process, the simulated particles generate a large amount of disintegration. According to the observation by the inventors, Lu, the inorganic binder (limus, slaked lime, bentonite, etc., inorganic microparticles below the surface) used in the granulation treatment (simulation particle formation) at the stage of drying is carried out. When the binding force disappeared, it was found that a large amount of the particles were returned to the state of coarse particles, fine particles, and fine particles, and when they were poured into the sintering machine pallet for 込, =, the ventilation resistance increased instead, resulting in a large drop in sintering productivity and a large amount of sintering. Both of them hinder the normal sintering operation, and as a result, the sintering operation is difficult. (Inventions 1, 2, and 3) Inventive Examples 1 to 3 are suitable for the processing application example of the present invention shown in Fig. 4. 312XP/Invention Manual (Supplement)/96-03/95143510, 0 1327169 The following is an example: First, the present invention is added between a mixing cylinder mixer 2a and a granulation cylinder mixer 2b. The expected characteristics (the organic binder which evaporates and dries (the TC or more does not evaporate and maintains the characteristics of granulation strength), the organic binder which contains a carboxylic acid group, and granulates, after which it uses dry. Drying is carried out in a rotary kiln 3. In these examples, the organic binder is added to the mixed raw material particles in a granulation cylinder mixer (the first inlet side of the mixer). In the granulation cylinder mixer (secondary mixer) 2b + , the simulated particles are formed by the main action of the organic binder, and the simulated particles are supplied to the rotary kiln for drying 3. From the drying back (4) 3 The drying medium used in the outlet side of the outlet kiln uses the exhaust gas supplied from the wind box group located on the side of the discharge side of the sintering machine (the portion where the south temperature exhaust gas can be obtained). Extracting the exhaust gas from the above-mentioned bellows The pipe supply pipe '15' indicates a fan for exhaust gas extraction. Further waste: the gas is introduced into the temperature adjusting machine 16 and then mixed with the dilution gas, or directly used as a drying heat medium to supply the slewing party 3 via the heat medium supply. On the exit side, and into the upper π Φ ^ industry and into the rotary kiln 3 in the above. At this ° ·,,,, using the simulated particle rotation - stirring % from the exchange of the # simulation particles drying, with accompanied ", 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另 另The pot test at the time of the treatment of the Lusley J 1 d of the machine, and the comparison of the comparative example 1 are shown in Table 4. According to Table 4, it is known that in addition to the (10) binder used as the binder, In the inventive example 1 of the sintered raw material which is the same as the comparison of 312XP/invention specification (supplement)/9 〇3/9514351 〇39 1327169 1, the sintering time is shortened and the productivity is improved. Further, the inventive example 2 and In the case of the first invention, the type of the organic binder is changed, and the mold is used. The strength of the particles increases, the change in the packing density is reduced, the sintering time is further shortened, and the productivity is also greatly improved. In addition, in the invention example 3, the type of the organic binder and the thickness of the layer loaded on the pallet are changed from 400 mm. The other conditions were the same as those of Inventive Example 2 except for the case of 600 mm. In this example, the density of the charged layer was the same as that of Inventive Example 2, and although the thickness of the loaded layer was as large as 600 mm, the sintering time was also excellent. Comparative Example 1 was substantially the same, and as a result, productivity and yield were greatly increased. It was found that the southmost temperature of the exhaust gas was also south and was sufficiently sintered. Table 4 Comparative Example 1 Inventive Example 1 Inventive Example 2 Inventive Example 3 Adhesive Inorganic binder organic binder A (0.1% by mass) Organic binder BC0.1% by mass) Organic binder C (0.1% by mass) Drying method Figure 1 Figure 4 Figure 4 Figure 4 Thickness of raw material (mm) 400 400 400 600 Mounting density (t/m3) 1.63 1.70 1.67 1.67 Average air volume (m3/min) 1.50 1.78 2.17 1.50 Maximum exhaust gas temperature rc) 444 460 480 490 Yield (3⁄4) 83.1 72.5 79.2 88.1 Sintering time (minutes) 20.7 16.8 14.6 20.7 Productivity (t/h/m2) 1.41 1.58 1 .96 1.86 Hard particle harmonic diameter (mm) 1.05 1.09 2.03 2.10 Chess particle arithmetic path (ran) 2.94 2.93 3.63 3.61

According to the above results, it was confirmed that when the treatment was carried out by the usual granulation technique (Comparative Example 1), the simulated particles disintegrated and the productivity was lowered. 40 312XP/Invention Manual (Supplement)/96-03/95143510丄j In this method, an organic binder is added so that the sub-' is used in combination with the drying method shown in Fig. 4, and a comparative example is obtained! The 12 Π punctual productivity increased to 1,58 (increase.) in the invention, and rose to the invention example 2! 96 (increased by 39%), further in = can also - and obtain productivity (Im. 86 (increased) and good sheep (79 2 - 88 1%), so the invention (the example) 2) C shows that the sintered raw materials are granulated and dried under various conditions, and the air volume, sintering time, and productivity in the sintering are measured, and == are collectively recorded in Table 5. The effect is remarkable when there is no returning, and the sintering time is All of them are shortened. = (4) Compared with the usual treatment A, treatment B and treatment c, the effect of the additive (4) sinterability is compared, and the above-mentioned general treatment A-type round mixer is added with water and quicklime as a binder in the sintering raw material. Ericsson: Ϊ仃 sintering to carry out sintering; the above treatment 8 is in place of the above-mentioned conventional <lime' to add gum arabic in a powder state; the above treatment of the gum arabic is added as an aqueous solution. According to the results, the car father is 'organic bonding The agent is directly added in the form of a powder. Again, Figure 17 is based on the use of an organic binder (Arabic), in order to see the effect of the use of quicklime and as a binder on the sinterability, as described above: As a base When the quicklime is added (the treatment (9) is not added to the σ, the sputum is not added), the sinterability is compared with the sinter. * According to Fig. 17, when the organic binder and the ash are coexisted, the air permeability is deteriorated. Further, Fig. 18 is a method in which the organic binder (Arabic gum) is used, and the above-mentioned 312?3>/__(supplement)/96-03/95143510 41 1327169 The sinterability at the time of the ore (treatment B) and the case where the ore is not contained (treatment E) is compared and shown. It can be seen from Fig. 18 that the effect of the organic binder is remarkable when the ore is not contained.

312XP/Invention Manual (supplement)/96-03/95143510 42 1327169

Usually the results of the sintering experiment are processed. $ ▲ +-> ¥ tint isSJ L56 1.82 r-Η CNI 00 1.66 2.03 • ^ You 4Φ i CO 10.8 14.5 15.5 〇〇σΐ 13.6 10.9 Air volume in the air (m3/min) 1_ 1.93 2.44 1.69 2.77 2.39 2.32 i it 41 S ? 3 f S -9- fi Painting 1 Water + quicklime Arab ants come _ Acacia (7 phantom) + quick lime with or without returning cup + F m Add to granulation raw material (iron broken stone , limestone, coke powder) Additive 1 Arabic 釈 powder) Arabic water supply fine Arabian thief water fine Arabian 釈 powder) Guiya gum (powder) Gu Yasheng (powder) η 5ί -< PQ 〇〇ε inch ο ι s£HS/s_96/(i£SKB_B^/dxn ε 1327169 (Example 3) Under the various conditions shown in Table 6, the sinter raw material was granulated, dried, and subjected to a real reduction experiment. Air volume, sintering time and productivity 'and the results are recorded and surfaced. 6 Sintering experiments are carried out under various conditions, when the layer thickness is standard _ café and the basin is raised: 00 mm Under the level of the sintering machine in the _ off, the carbon material is 5.5% by mass The benchmark 'in the operation of the 9-small sintering machine' was based on the increase in the thickness of the layer. Therefore, the carbon material was used as the standard. The comparative example 1 is an example of using an inorganic binder of the prior art, and the layer thickness is At 600 coffee, the sintering time in the operation of the sintering machine was 3 〇 minutes, and when the layer thickness was 900 mm, the increase in the layer thickness caused the sintering time to be extended to 45 minutes θ. On the other hand, the inventive examples 1 to 4 were due to the world. The production of the gum arabic is too small, so an example of an organic binder other than gum arabic is used. The invention is inferior to the comparative example 1 in that the sintering time is shortened, and even if the layer thickness is 900 Å, sintering is performed. The operation of the machine is not inferior to the operation of the 600 mm sintering machine of Comparative Example 1, or it is a result of shortening compared with the sintering, so that the productivity of the finished sintered ore can be greatly improved. Sintering the ventilating floor of the entire human body layer, so that sufficient ventilation can be ensured, and thus the quality of the sinter can be homogenized. Moreover, the operation of the sintering machine with a layer thickness of 900 mm can also ensure an average Ventilation of air volume, by It is indicated that the layer thickness operation of 9 〇〇mm or more can be carried out without any hindrance. As explained above, according to the present invention, the generation of the wet belt can be reduced or eliminated, so that even if the existing sintering machine does not need to be improved, etc., Sintering operation is carried out by increasing the thickness of the raw material loading layer (sinter bed thickness) from 600 mm to over 900 mm, and sintering is performed. Reduction in the amount of carbon used in sintering, etc. Further, according to the present invention, when the operation of increasing the thickness (sinter bed thickness) of the sintered raw material-packed layer is performed, the sintering time can be greatly shortened.

312XP/Invention Manual (supplement)/96-03/95143510 45 1327169

9<Inventive Example 4 (combination of organic binder and inorganic binder) and use example: inorganic binder: benton CMC: 0. 05 benton: 0·10 CT) CD-LO od cz> CO LO CO OO CO ( N1 LO Cvl oi 〇§ ixi to od CO oi CO 1—^ <NJ CO OO 2. 25 Inventive Example 3 Granulation using organic binder and excess water (CMC + bentonite) CMC : 0. 05 Expanded soil: 0.10 g CD <=> LTD Bu·inch CN3 LO CO OO OO 0 T" 01 g CO LO LO LO Bu·CJi oi CD OJ OO LO 2.10 Invention Example 2 Organic binder (CMC) ◦ τ-Η CZ5 &lt ;=> § o LO 卜 o oo oa CD OO CD CO sg CO LO LO LO 卜·· oa oi LO 03 OO SS oi Inventive Example 1 Organic adhesive (Guiya gum) 0.10 a § o LO Bu·inch Cm' inch CO OO LO CO 1.85 g CO LO LO 卜 · LO οό m CV3 OO LTD eg 1.85 Comparative Example 1 Inorganic binder (lime) oi g CT> CD inch · LO /-~N 龊HBV· LO Bu· o CD OO LO inch 1.05 a § LT) LO LO 卜 · ¥ LO 卜 · CO 1 i CvJ OO <=> CO 1.05 1 Binder type drying method (using adhesive) Adhesive force α amount (% by mass Thick material layer ( ) Carbon content (% by mass) Added moisture (% by mass) Moisture after drying (% by mass) Average air volume (m3/min) Yield (%) Sintering time (minutes) Simulated particle blending diameter (mm) 9 inch 01 s6/ Rn0-96/ffM) 盔 盔 盔 / / dx < Nl ε 132 / 169 [Simplified Schematic] Figure 1 is a flow chart showing the conventional sinter manufacturing process. Figure 2 is a schematic diagram of pressure loss and temperature distribution in a sintered layer. Welding (b), (C), and (4) are schematic diagrams of the effects of drying conditions of granulated simulated particles on the magical knot. Fig. 4 is a flow chart showing the sinter production process of the present invention. Figure 5 (a), (b), (c) and (d) are the schematic diagrams of the effect of the binder on the cumulative ratio of the particles used before and after drying. Figure 6 (a), (b) and (c) It is a schematic diagram illustrating the state of the binder in the powder filling layer. Fig. 7 is a view showing the influence of the state of occurrence of the binder on the relationship between the amount of the binder added and the granulation strength. 〃 Figs. 8(a) and 8(b) are explanatory diagrams showing changes in the distribution state of the organic dot mixture due to different addition methods. Fig. 9 (a) and (b) are explanatory views of the method of adding the organic binder of the present invention. Fig. 10 is an explanatory view showing the action of the inorganic binder and the organic binder in combination. Fig. 11 is a diagram showing the effect of not simulating the influence of the moisture content of the particles on the sintering time. Figure 12 is a graph showing the relationship between the amount of carbon and the strength of the sintered ore. Figure 13 is a graph showing the relationship between the layer thickness and the strength of the sinter. Fig. 14 (a), (b), (c), (4) and (4) are explanatory views of application examples of the sinter manufacturing process of the present invention. 312XP / invention manual (supplement V96-03/95143510 47

15 is a description of other application examples of the sinter manufacturing process of the present invention. Schematic diagram of the addition method of the organic second-based organic binder, and the diagram of the influence of the addition method on the sinterability. Schematic diagram of the addition method of ash to organic V: quicklime, and ffl 17(b) is a schematic diagram of the effect of raw stone on the effect of organic binder. Fig. 18 (a) is a schematic diagram of the back-mine condition of the organic binder, and Fig. 18(b) is a schematic diagram showing the effect on the effect of the organic binder. [Main component symbol description] ~ 1 Hopper 2a Mixing cylinder mixer 2b Granulating cylinder mixer 3 Rotary kiln 4, 5 Top sand hopper 6 Cartridge feeder 7 Cutting chute 8 Pallet 9 Loading layer 10 Ignition furnace 11 Bellows 12 Sintering cooler 13 Exhaust gas extraction branch 14 Exhaust gas supply piping 15 Fan 312XP / Invention manual (supplement) / 9643/95143510 48 1327169 16 Temperature adjustment machine 17 Heat medium supply piping

312XP/Invention Manual (supplement)/96-03/95143510 49

Claims (1)

169 / / 169 10, the scope of application for patent: sinter manufacturing method, including the following steps: Add water and binder into the drying step, so that the quality of the granulation is ~ heart 丄: original; 'The above-mentioned dry granulation and sintering raw material is charged into a sintering machine to produce a two-soil sinter ore, which comprises the following steps: j step 'Adding granulation to a sintering raw material containing a carbon material to produce a granulated and sintered raw material ; advance: the step of 'dividing the granulated and sintered raw material into at least a part of the granulated sinter raw material and the suspended second granulated sinter raw material; the dry granulated and sintered raw material having a mass of less than 5%; The dry granulation and sintering raw material is mixed with the material as a mixed granulation and sintering raw material; and in the original sintering step, the mixed granulated and sintered sinter is charged into a sintering machine for sintering. τ 3. The method for producing a sintered ore according to claim 2, wherein the step of distinguishing comprises dividing the granulated and sintered raw material into at least the first granulated and sintered raw material of the coffee and the second granulating of less than 5 (10) Sintering raw materials. 4. The method for producing a sintered ore according to claim 1 or 2, wherein the drying step comprises drying the granulated and sintered raw material 312XP/invention specification (supplement)/96>03/95143510 5〇.丄W/169 Patent application No. 4 of the sintering process The above drying step includes Baigu^, in which the granules of the granulated sintering raw material for the drying 窒g are laterally dried: .... a medium for granulating and sintering raw materials in a rotary smoked product. 6. The method for producing a sintered ore according to the scope of the patent application, wherein I, 〇, 拉w, to form a granulated and sintered raw material; the drying step comprises the above The granulation of the granulator is as follows: the granulation in the drying granulator is supplied to the granulation in the drying granulator. The granulation step of the sinter ore according to claim 1 or 2, wherein the granulation step comprises The pelletizer is granulated by adding water and a binder to the sintering containing the carbon material to form a granulated and sintered raw material; • the drying step includes a first drying step, granulation from the granulator, and a raw material row Export side to the granulator a drying heat medium for drying the granulated and sintered raw material in the granulator; and a second drying step of drying the granulated raw material after the first drying step using a rotary kiln. 8. As claimed in claim 1 or 2 The method for producing a sintered ore, wherein the drying step comprises using a hot-smelting heat medium having a temperature of 20 (TC to 50 (TC temperature) to dry the granulated sintered raw material. 9. The manufacturing of the sintered ore according to claim 1 or 2 The method, wherein the drying step comprises using the exhaust gas generated by the bellows group 312XP/invention manual (supplement)/96·〇3/95ΐ435ι〇51 丄327169 located on the side of the smelting section of the sintering machine as a heat medium for drying, Dry granulation and sintering raw materials. 乂〇 'As in the manufacturing method of the sinter of the patent application scope, the step of the welding includes the use of the exhaust gas generated by the sinter cooler to dry the granulation and sintering Raw materials. 11' If the scope of patent application is i. The sinter of the second item = the second of the above-mentioned adhesives, which are included in the water after evaporation, also have a binder. Another 1, 2 · the sintering of the scope of the patent Mine manufacturing The method of the present invention, wherein the organic binder is added in a ratio of two percent relative to the sintering raw material. The shelling step 13. The method for producing a sintered ore according to claim 2 or 2, wherein the granulating step comprises containing carbon A pulverized organic binder and water are added to the sinter raw material for granulation. 14. The method for producing sinter ore according to the scope of claim 5, wherein the organic binder is a gum substance or a cellulose smear. The method for producing a sintered ore according to claim 14 wherein the above-mentioned colloidal material is a gum or gum arabic. 16. A method for producing a sintered ore according to claim 14 Wherein the above cellulose-based tackifier is carboxymethylcellulose. 17. The method of producing a sintered ore according to claim 1 or 2, wherein the binder comprises an inorganic binder and an organic binder. 18. The method of producing a sintered ore according to claim 17, wherein the organic binder is a gelatinous substance or a cellulose-based booster. 312XP / invention manual (supplement) / 96 〇 3 / 95 (4) $ ^ 〇 52 U2 / 169 in the application of the patent (4) i8 $ sinter manufacturing method, the colloidal material is a gum or gum arabic. In the method for producing a sintered ore of the invention of the patent of the Japanese Patent Publication No. 18, the cellulose-based tackifier is carboxymethylcellulose. The method for producing a sintered ore according to the seventh aspect of the invention, wherein the inorganic binder is at least one selected from the group consisting of bentonite, water glass and pulp. 22. The manufacturing method of the sinter ore according to the second or second aspect of the patent application, the above-mentioned granulation step comprises the excess moisture value required for the water content compared to the raw material used as the sintering raw material. Water and a binder are added to the sintering raw material containing a carbon material, and granulation is performed. 23. The method of producing a sintered ore according to claim 1 or 2, wherein the step of sintering comprises sintering at a layer thickness of at least 6 mm or more. 24. The method of manufacturing a sintered ore according to claim 1 or 2, further comprising a preliminary drying step of preparing the raw material without the granulated sintering material before the drying step. 312ΧΡ/Invention Manual (supplement)/96-03/95143510 53