CN102765994A - Method for preparing granular potash fertilizer - Google Patents
Method for preparing granular potash fertilizer Download PDFInfo
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- CN102765994A CN102765994A CN2012102905930A CN201210290593A CN102765994A CN 102765994 A CN102765994 A CN 102765994A CN 2012102905930 A CN2012102905930 A CN 2012102905930A CN 201210290593 A CN201210290593 A CN 201210290593A CN 102765994 A CN102765994 A CN 102765994A
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Abstract
A method for preparing granular potash fertilizer includes steps of: (1) preparing of additives for prilling: magnesium oxide and magnesium chloride or magnesium sulfate aqueous solution are reacted to generate chloride oxygen magnesium hydrate or sulfur oxygen magnesium hydrate, and batch charging mole ratio of the reaction system is that magnesium chloride or magnesium sulfate: magnesium oxide: water=1:(3-5):(10-50); and according to the charging ratio, magnesium chloride or magnesium sulfate is dissolved into water to be prepared into solution, active powder-shaped magnesium oxide is added according to the charging ratio, and the solution and the added magnesium oxide are evenly stirred and mixed to form binder slurry with good mobility; and (2) prilling of powder-shaped potassium chloride or potassium sulfate: the binder slurry is added into a material bed composed of raw material powder-shaped magnesium chloride or potassium sulfate and return materials in a granulator in spraying mode for prilling, and preparing the needed granular potash fertilize after drying ,cooling and screening. The method is simple in operation process, large in production capacity, low in production cost, wide in product granule size range, uniform and round in appearance, high in granule strength and the like.
Description
Technical field
The present invention relates to a kind of change procedure that utilizes Natural manganese dioxide, magnesium chloride or sulfuric acid and water to react by powdery Repone K or vitriolate of tartar, preparation can be used for the method for the sylvite such as granular Repone K/vitriolate of tartar of bulk blended fertilizer use.
Background technology
Compare with powdered fertilizer, granulated fertilizer has many good physical propertiess, does not play dirt when for example loading and unloading, and long storage should not be lumpd, and good fluidity is easy to spreading during fertilising, can realize mechanized application.The fertilizer that contains Different Nutrients that particle size is close can carry out direct blending; Obtain bulk blended fertilizer (BB is fertile) cheaply; Have the fertilizer efficiency identical with compound manure; Cooperate technological large-area the applying of agriculture soil testing and fertilizer recommendation, can improve the comprehensive utilization ratio of fertilizer nutrient, bulk blended fertilizer has become 21st century world's fertilizer developing direction.
In the required unit of the bulk blended fertilizer nutrient raw material; The development of granular urea, particle phosphorus ammonium process recent two decades; All realized large-scale industrial production, single covering device generation ability has reached the scale in hundreds of thousands of ton/year, but is that the sylvite of representative is because physico-chemical property own and characteristics with Repone K; Inviscid, not plastic, HMP are difficult to adopt methods such as conventional granule granulation or melting granulating technology to realize prilling.Up to the present, only the extruder grain method is accomplished scale production, but single cover production equipment ability is merely ten thousand tons of scales.Because the granular potash fertilizer density that extruder grain is produced is apparently higher than existing granular urea, particle phosphorus ammonium, the blending process very easily produces segregation phenomenon and causes the component of bulk blended fertilizer inhomogeneous, influences quality product and result of use.In addition, also exist the granular potash fertilizer roundness of extrusion production poor, defective such as narrow non-adjustable, the extrusion equipment key part serious wear replacement of size distribution frequency height.Granular potash fertilizer production technique and quality product have become the restraining factors of bulk blended fertilizer development.
What the present invention relates to is a kind of new particle sylvite production technology, can solve fertilizer industry production and use the technical bottleneck that is faced in the particle sylvite process through the present invention.
One of technological core of the present invention is exactly to obtain a kind of efficient, cheap airsetting cohesive material---magnesium oxychloride material, can be with being difficult to granulated powdery sylvite, and reuniting becomes the whole strong spherical sylvite finished product of particle.
Magnesium oxychloride material is a kind of airsetting property material, and room temperature can be hardened more than 10 ℃ and solidified.Magnesium oxychloride material has good physical and mechanical property, its bending strength>=65MPa, ultimate compression strength>=90MPa, coefficient of softening>=0.85, water-intake rate≤13%, contract with dry rate≤0.6%.
As the gelling material main body, and the constituent phase structure (normal temperature) that generates is 5Mg (OH) with light calcined magnesia and magnesium chloride
2MgCl
28H
2O (common name 5-1-8 phase) and 3Mg (OH)
2MgCl
28H
2O (common name 3-1-8 phase).Contain Natural manganese dioxide and magnesium chloride in its material, therefore be called magnesium oxychloride material.
The magnesium oxychloride material performance is mainly by MgO/MgCl
2, H
2O/MgCl
2The decision of mol ratio relation.
Magnesium chloride is one of main base mateiral in the magnesium oxychloride material, and its function in material shows as the aquation gel that promotes MgO, and the gelling of magnesium oxychloride material is the hydration process final product of MgO, MgO+H
2O=Mg (OH)
2Because Mg (OH)
2Solubleness is very little by (9 * 10
-3) g/L, can not make Mg (OH)
2Gel recrystallizes into and is bigger crystallization linker, causes no gelling itself.In system, add MgCl
2After can improve Mg (OH)
2Solubleness, make Mg (OH)
2Gelinite is transformed into the xln with mechanical property, and glued unclassified stores can become the solid material with certain physical strength.
Particle sylvite technology of preparing involved in the present invention is the conventional multiple fertile general production equipment of an a kind of employing system, with the method for powdery Repone K or powdered potassium sulfate salt preparation becoming particulate state potash fertilizer.Its principle is after in water, adding additive in proportion and mixing; Be sprayed onto the granulation material bed surface that powdery Repone K or powdered potassium sulfate raw material and returning charge are formed; Feed small amount of steam and carry out continuous granulation; Again through super-dry, cool off, sieve, promptly can be made into outward appearance rounding, granule strength height, constant product quality, granular potash fertilizer product that shatter value is good.Adopt present technique to produce granule potassium chloride or vitriolate of tartar, plant capacity is big, and production cost is low.Product does not lump, and it is good to store use properties, can be widely used in the bulk blended fertilizer and independent use of various series prescriptions.
In the prior art:
The Shan Xiaji of Osaka, Janpan Da Ban city Chisso Corporation (JP) 6-32, Nakanoshima 3-chome, Kitaku, Osaka, Japan reaches, early Chuan Chang does, gloomyly goes out for a short time, golden Tian Chongxiong is at " granular potassium sulfate and method of manufacture thereof " (application number: 87105366) in the patent of invention; Very low vitriolate of tartar comminution granulation of a kind of efflorescence percentage ratio and the method for producing the granular potassium sulfate with good fluidity are provided, and the granular potassium sulfate that obtains as stated above.This inventive method comprises: be selected from least a component in a group of calcium hydroxide, quicklime, Marinco H, Natural manganese dioxide, magnesiumcarbonate and ammonia; With 0.5～2 times of normal amount with respect to said unreacted sulfuric acid amount; Be added to by Repone K and sulfuric acid and in anhydrous state, react transforming in vitriolate of tartar and the contained unreacted sulfuric acid of obtaining, that continues carries out wet granulation.
Lv Yunfeng, the Li Jinkai of Canada Hanfeng Slow Release Fertilizer Co., Ltd are at " a kind of method of manufacture of high-concentration round grainy potassium muriate " (application number: 200810043455.6), invented a kind of method of manufacture of high-concentration round grainy potassium muriate.It is with potassium oxide content be 60% or the powdery Repone K of above certain fineness join in granulating disc or the rotary drum granulator; Spray into saturated potassium chloride solution by a certain percentage as the granulation liquid phase; Carry out round as a ball balling-up granulation, make round shaped grain shape Repone K product through super-dry, screening again.Potassium content can up to 60% or more than, characteristics such as this invention has that operating procedure is simple, throughput is big, product cut size wide ranges, particle are mellow and full, intensity height, and do not produce waste material aborning, energy-conservation, environmental protection, market outlook are wide.
(application number: 200910026508.8) patent discloses pair roller type extruding and pelletizing plant and granulation process flow process thereof to the Chen Gang of Nanjing Sanpu Prilling Equipment Co., Ltd " pair roller type extruding and pelletizing plant and granulation process flow process thereof ".Its structure is that material level automatic constant pipe inserts desired depth and fixing in the forced feed machine hopper from top, and the forced feed machine links to each other with the pair roller type Squeezinggranulator of installing thereunder.Need not intermediate bunker and metering device and material-level detecting device.Advantage: utilize the solid powder folk prescription to the characteristic of transmitting pressure, the material level automatic constant pipe through the opening for feed place makes the material level in the forced feed machine hopper keep constant and is in optimum Working all the time, thus the stable performance of assurance pair roller type extruding and pelletizing plant.Avoided traditional forced feed machine to lean on level gage to detect the material level state; And realize constant material level in the forced feed machine hopper through the loaded down with trivial details mode of regulating dosing device; Intermediate bunker, metering device and material-level detecting device etc. necessary under the traditional way have been saved; Factory building height and investment are reduced greatly, and safety is high.
(application number: 200810016920.7) invention relates to the technology that a kind of extruder grain no drying is produced potash magnesium sulphate fertilizer to Linshu County, Shandong Province Guo Rui " the extruder grain no drying is produced the technology of potash magnesium sulphate fertilizer "; Its characteristics are: with vitriolate of tartar, five water magnesium sulfates, water-holding agent and in, trace element is according to 46: 35: 0.6: 18.4 parts by weight mix; After the full and uniform stirring; Deliver to loading hopper, then packaging final prod after rolling sheet, chopping, whole grain, screening.In described, trace element comprises: zeolite powder, borax, zinc sulfate, copper sulfate, ferrous sulfate, they are according to 10～20: 1～3: 1～2.5: 0.1～1.5: 0.1～1 ratio of weight and number mixes.Extruder grain technology is adopted in this invention, and adds drought-resistant water-preserving growth promoter, the multielement potassium magnesium sulfate water conservation fertilizer product of production; Nutrient discharges slowly, utilization rate of fertilizer is high, it is nervous to alleviate resource; And the minimizing loss of soil nutrient, protection groundwater environment, safety and environmental protection.In whole process of production, no moisture is introduced, and the no drying process has reduced power consumption, coal consumption in oven dry, the process of cooling, three-waste free pollution thing discharging in process of production.
People such as the Luo Zili of Tongling Chemical Industry Group Co.,Ltd are at " Repone K agglomeration granulation technology " (application number: 03112963.3) in the patent of invention; A kind of technology of Repone K agglomeration granulation is disclosed; It is that Repone K raw material, caking agent are mixed the laggard granulating equipment of going into to reunite by a certain percentage with addition material; The use of agglomeration granulation technology and caking agent is identical with prior art, and the gained particle gets product through dry, cooling, screening; Described addition material composition is mainly ferrous iron material, and the weight part of its use accounts for 3%～30% of Repone K raw material weight.The present invention has improved the granulating performance of material through adding addition material, has improved the intensity of wet particle, thereby has made Repone K can adopt agglomeration granulation technology to carry out granulation, has overcome the defective that prior art can not be produced round shaped grain shape Repone K.
People such as the Cao Wei of Shanghai Chemical Research Inst space provide a kind of method of manufacture of granule potassium chloride in " a kind of granule potassium chloride method of manufacture " (application number 200410067909.5) patent of invention, its step comprises the preparation of sticker and the granulation of powdery Repone K.In hydrolytic reaction pot, add entry and starch in proportion, under mechanical stirring, heating is hydrolyzed, and processes the hydrolyzed starch sticker.Powdery Repone K joins in granulating disc or the rotary drum granulator, sprays into hydrolyzed starch sticker granulation balling-up in proportion, makes the required granule potassium chloride product of bulk blended fertilizer through super-dry, screening again.This method has characteristics such as operating procedure is simple, throughput big, low production cost, product cut size wide ranges, particle rounding, intensity height.
Jiang Chuanshu, Huang Minzai " the long-acting granular potash fertilizer " (application number: 95110359.8) in the patent of invention of Liaocheng, Liaocheng City Liang Shui town, Shandong Province safe woods chemical industry ltd; Relate to a kind of long-acting granular potash fertilizer preparation method; It by 90% the water soluble potassic fertilizer of (weight percent, down with) make major ingredient, be equipped with 10% amendment and a kind of nitrification inhibitor of 0.2%～2% and make auxiliary material; After mixing, form through the pair roller granulation.It delays the water-soluble of potash fertilizer, and the release of potassium oxide, has reduced the fertilizer efficiency loss, has suppressed early stage luxurious absorption of crop, has improved the utilization ratio and the fertilizer efficiency of potash fertilizer.
The people such as Zhou Gengqin of Jiangsu Research Institute of Nanjing Chemical Industry Group are in " a kind of method of manufacture of granulated fertilizer " (application number 00133280.5) patent; Mainly set forth the adhesive for granulating that in fertilizer material, adds 5%～50% (weight); Add 3%～30% (weight) acid concentration simultaneously and carry out granulation, after dry, cooling, screening, can obtain epigranular, particle rounding, granulated fertilizer that intensity is high at the acid activators of 5%～80% (weight).This invention is applicable to produces various single element granulated fertilizers, like granule potassium chloride, granular potassium sulfate etc., also is suitable for producing the compound fertilizer dedicated of multielement.It is simple that this method has technology, reduced investment, characteristics such as cost is low, and granular mass is good.
Summary of the invention
The objective of the invention is to adopt conventional rotary drum granulator or granulating disc, make pelletizing additives, respectively powdery Repone K or vitriolate of tartar are carried out granulation with magnesium chloride/Adlerika and Natural manganese dioxide.This technological process is simple to operate, and throughput is big, low production cost, product cut size wide ranges, the even rounding of outward appearance, characteristics such as granule strength height.Process method of the present invention can be produced by the multiple fertile manufacturing enterprise of present great majority device and can be used for the granular potash fertilizer product that bulk blended fertilizer uses.
The preparing method's of a kind of particulate state potash fertilizer of the present invention step comprises:
(1) granulation is with the preparation of additive: Natural manganese dioxide and magnesium chloride or magnesium sulfate solution react; Generate chlorine oxygen magnesium hydrate or magnesium oxysulfide hydrate, the reaction system molar ratio is: magnesium chloride or Liu Suan Mei ﹕ Yangization Mei ﹕ water equal 1 ﹕, 3～5 ﹕ 10～50; By above-mentioned charge ratio, at first magnesium chloride or sal epsom are dissolved into and process solution in the water, add by above-mentioned charge ratio again and have active powdery Natural manganese dioxide, mix, form the sticker slip of good fluidity.
(2) granulation of powdery Repone K or vitriolate of tartar: in tablets press, the sticker slip spray added in the material bed of being made up of raw material powdery Repone K or vitriolate of tartar, returning charge and carry out granulation; Through super-dry, cooling, screening, can make required particulate state potash fertilizer finished product again.
Feed steam in preparing method's of the present invention step (2) granulation process and carry out continuous granulation.
The sticker consumption is the 1wt%～40wt% of powdery Repone K or vitriolate of tartar consumption in preparing method's of the present invention step (2) granulation process.
The sticker preferable amount is the 3wt%～18wt% of powdery Repone K or vitriolate of tartar consumption in preparing method's of the present invention step (2) granulation process.
Tablets press in preparing method's of the present invention step (2) granulation process is rotary drum granulator or granulating disc.
Reuse as returning charge through broken back through the defective particle after the screening in the sylvite granulation process of the present invention, the weight ratio of returning charge and raw material powdery Repone K or vitriolate of tartar is 0.5～4 : 1.
The powdery Repone K that granulation of the present invention is required or the average particle size range of vitriolate of tartar raw material are 0.10～0.55mm.
K in the granule potassium chloride in the finished particle shape potash fertilizer that the present invention makes
2O content>=55wt%, K in the granular potassium sulfate
2O content>=46wt%; Particle size range 2～4.75mm.
The preparation feedback equation of pelletizing additives of the present invention is following:
System one:
5MgO+MgCl
2+ 13H
2O=5Mg (OH)
2MgCl
28H
2O (5-1-8 phase)
3MgO+MgCl
2+ 11H
2O=3Mg (OH)
2MgCl
28H
2O (3-1-8 phase)
System two:
5MgO+MgS0
4+ 13H
2O=5Mg (OH)
2MgSO
48H
2O (5-1-8 phase)
3MgO+MgSO
4+ 11H
2O=3Mg (OH)
2MgSO
48H
2O (3-1-8 phase)
Potash fertilizer process for producing such as granule potassium chloride that patent of the present invention is related or granular potassium sulfate fertilizer compared with prior art have following technical characterstic:
1) the present invention adopts a kind of efficient, cheap airsetting cohesive agent magnesium oxychloride material, can be with being difficult to granulated powdery sylvite, through the strong spherical sylvite finished product of method of agglomeration preparation becoming particle rounding.
2) granulation process can improve prilling temperature through adding steam, reduces granulation water, can promote the increase of granular potash fertilizer product intensity simultaneously, more helps the production equipment production capacity and promotes.
3) finished particle Repone K K
2O can reach more than 55%, granular potassium sulfate K
2O can reach more than 46%, particle size range 2～4.75mm.
4) the granular potash fertilizer product that adopts the inventive method to produce, granule strength is big, and the profile rounding is stored use and is not produced caking phenomenon.
Description of drawings
Accompanying drawing is a particulate state potash fertilizer preparing method's of the present invention process flow sheet.
Embodiment
For embodiment of the present invention better, the spy illustrates as follows.Scope of the present invention never is limited to the described characteristic of these specific embodiments.
Embodiment 1
10 kilograms of magnesium chlorides are added in 94.7 kilograms the water, stirring and dissolving adds 21.5 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 944 kilograms of K
2O content is in the granulation material bed that forms of 60.0% powdery Repone K and 1880 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, again through super-dry, screening, cooling, can become K
2O content is the particulate state Repone K product of 56.6wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 2
10 kilograms of magnesium chlorides are added in 37.8 kilograms the water, stirring and dissolving adds 12.9 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 966 kilograms of K
2O content is in the granulation material bed that forms of 60.0% powdery Repone K and 483 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state Repone K product of 58.0wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 3
6.5 kilograms of magnesium chlorides are added in 88.6 kilograms the water, stirring and dissolving adds 21.5 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering disks, evenly be sprayed at 972 kilograms of K
2O content is in the granulation material bed that forms of 60.0% powdery Repone K and 1000 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, again through super-dry, screening, cooling, can become K
2O content is the particulate state Repone K product of 57.7wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 4
2.5 kilograms of magnesium chlorides are added in the water of double centners, stirring and dissolving adds 7.5 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 990 kilograms of K
2O content is in the granulation material bed that forms of 60.0% powdery Repone K and 500 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, again through super-dry, screening, cooling, can become K
2O content is the particulate state Repone K product of 58.8wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 5
8 kilograms of magnesium chlorides are added in 80 kilograms the water, stirring and dissolving adds 40 kilograms powdery Natural manganese dioxide, stirs.The mixed slurry pumping is got in the granulating disc, evenly be sprayed at 952 kilograms of K
2O content is in the granulation material bed that forms of 60.0% powdery Repone K and 2000 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, again through super-dry, screening, cooling, can become K
2O content is the particulate state Repone K product of 57wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 6
10 kilo sulfuric acid magnesium are added in 75.0 kilograms the water, stirring and dissolving adds 16.7 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 954 kilograms of K
2O content is in the granulation material bed that forms of 50.0% powdered potassium sulfate and 3780 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state potassium product of 47.7wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 7
4.3 kilo sulfuric acid magnesium are added in 37.5 kilograms the water, stirring and dissolving adds 4.3 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 984 kilograms of K
2O content is in the granulation material bed that forms of 50.0% powdered potassium sulfate and 984 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state potassium product of 49.2wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 8
4.3 kilo sulfuric acid magnesium are added in 43 kilograms the water, stirring and dissolving adds 21.5 kilograms powdery Natural manganese dioxide, stirs.In the tablets press with patterns such as mixed slurry pumping entering rotary drums, evenly be sprayed at 975.2 kilograms of K
2O content is in the granulation material bed that forms of 50.0% powdered potassium sulfate and 1000 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state potassium product of 48.8wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 9
6.2 kilo sulfuric acid magnesium are added in 62 kilograms the water, stirring and dissolving adds 18.6 kilograms powdery Natural manganese dioxide, stirs.The mixed slurry pumping is got in the granulating disc, evenly be sprayed at 975 kilograms of K
2O content is in the granulation material bed that forms of 50.0% powdered potassium sulfate and 4000 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state potassium product of 48.7wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Embodiment 10
1.9 kilo sulfuric acid magnesium are added in 95 kilograms the water, stirring and dissolving adds 9.5 kilograms powdery Natural manganese dioxide, stirs.The mixed slurry pumping is got in the granulating disc, evenly be sprayed at 989.5 kilograms of K
2O content is in the granulation material bed that forms of 50.0% powdered potassium sulfate and 495 kilograms of returning charges, feeds steam in right amount and carries out continuous granulation, can become K through super-dry, screening, cooling again
2O content is the particulate state potassium product of 49.5wt%; The even rounding of product appearance, particle size range 2～4.75mm.
Claims (8)
1. the preparation method of a particulate state potash fertilizer is characterized in that this method steps comprises:
(1) granulation is with the preparation of additive: Natural manganese dioxide and magnesium chloride or magnesium sulfate solution react; Generate chlorine oxygen magnesium hydrate or magnesium oxysulfide hydrate, the reaction system molar ratio is: magnesium chloride or Liu Suan Mei ﹕ Yangization Mei ﹕ water equal 1 ﹕, 3～5 ﹕ 10～50; By above-mentioned charge ratio, at first magnesium chloride or sal epsom are dissolved into and process solution in the water, add by above-mentioned charge ratio again and have active powdery Natural manganese dioxide, mix, form the sticker slip of good fluidity,
(2) granulation of powdery Repone K or vitriolate of tartar: in tablets press, the sticker slip spray added in the material bed of being made up of raw material powdery Repone K or vitriolate of tartar, returning charge and carry out granulation; Through super-dry, cooling, screening, can make required particulate state potash fertilizer finished product again.
2. preparation method according to claim 1 is characterized in that, feeds steam in step (2) granulation process and carries out continuous granulation.
3. preparation method according to claim 1 is characterized in that, the sticker consumption is the 1wt%～40wt% of powdery Repone K or vitriolate of tartar consumption in step (2) granulation process.
4. preparation method according to claim 1 is characterized in that, the sticker preferable amount is the 3wt%～18wt% of powdery Repone K or vitriolate of tartar consumption in step (2) granulation process.
5. preparation method according to claim 1 is characterized in that, the tablets press in step (2) granulation process is rotary drum granulator or granulating disc.
6. preparation method according to claim 1 is characterized in that, reuses as returning charge through broken back through the defective particle after the screening in the sylvite granulation process, and the weight ratio of returning charge and raw material powdery Repone K or vitriolate of tartar is 0.5～4 : 1.
7. preparation method according to claim 1 is characterized in that, the powdery Repone K that granulation is required or the average particle size range of vitriolate of tartar raw material are 0.10～0.55mm.
8. preparation method according to claim 1 is characterized in that, K in the granule potassium chloride in the finished particle shape potash fertilizer that makes
2O content>=55wt%, K in the granular potassium sulfate
2O content>=46wt%, particle size range 2～4.75mm.
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| 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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| CN110803959A (en) * | 2019-11-29 | 2020-02-18 | 烟台市烟农富邦肥料科技有限公司 | Special granulating agent for producing round granular calcium magnesium phosphate fertilizer and application thereof |
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| 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 |
| CN113307662A (en) * | 2021-06-15 | 2021-08-27 | 国投新疆罗布泊钾盐有限责任公司 | Spherical potassium sulfate bonding granulation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769248A (en) * | 2004-11-05 | 2006-05-10 | 上海化工研究院 | Granule potassium chloride production method |
| CN101285015A (en) * | 2008-05-29 | 2008-10-15 | 李荣斌 | Quick burning coal compositions of environmental protection and energy conservation by using bituminous coal as component |
-
2012
- 2012-08-15 CN CN2012102905930A patent/CN102765994A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769248A (en) * | 2004-11-05 | 2006-05-10 | 上海化工研究院 | Granule potassium chloride production method |
| CN101285015A (en) * | 2008-05-29 | 2008-10-15 | 李荣斌 | Quick burning coal compositions of environmental protection and energy conservation by using bituminous coal as component |
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| CN103274434B (en) * | 2013-05-07 | 2015-12-23 | 中国恩菲工程技术有限公司 | The method of magnesium ion is reclaimed from Adlerika |
| CN103274434A (en) * | 2013-05-07 | 2013-09-04 | 中国恩菲工程技术有限公司 | Method for recycling magnesium ions from magnesium sulfate solution |
| CN105339326A (en) * | 2013-06-28 | 2016-02-17 | 钾肥和盐类集团钾肥有限公司 | Process for the manufacture of granulates containing potassium chloride and magnesium sulphate hydrate |
| CN104250117A (en) * | 2013-06-28 | 2014-12-31 | 德国钾盐集团股份公司 | Granulation method of salt mixture containing potassium chloride and magnesium sulfate hydrate |
| CN103910556B (en) * | 2013-10-31 | 2016-04-27 | 湖北景程化工有限公司 | Energy saving and environment friendly Compound fertilizer production technology |
| CN103553800B (en) * | 2013-10-31 | 2014-12-31 | 湖北富邦科技股份有限公司 | Production method of high-concentration potassium chloride pellet |
| CN103910556A (en) * | 2013-10-31 | 2014-07-09 | 湖北景程化工有限公司 | Energy-saving environment-friendly production technology for compound fertilizer |
| CN103553800A (en) * | 2013-10-31 | 2014-02-05 | 湖北富邦科技股份有限公司 | Production method of high-concentration potassium chloride pellet |
| 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 |
| CN103819271B (en) * | 2014-02-25 | 2016-04-27 | 湖北富邦科技股份有限公司 | A kind of manufacture method of novel particle Repone K fertilizer |
| CN104072260A (en) * | 2014-05-29 | 2014-10-01 | 苏州上研化肥科技发展有限公司 | Multifunctional production system for compound fertilizer |
| CN104311164A (en) * | 2014-10-09 | 2015-01-28 | 龙蟒大地农业有限公司 | Production method of potash magnesium sulfate fertilizer |
| CN105294270A (en) * | 2015-11-11 | 2016-02-03 | 河北萌帮水溶肥料有限公司 | Potassium sulfate particle and preparation method thereof |
| CN105294270B (en) * | 2015-11-11 | 2018-10-09 | 河北萌帮水溶肥料有限公司 | A kind of granular potassium sulfate and preparation method thereof |
| CN106278609A (en) * | 2016-08-15 | 2017-01-04 | 湖北富邦科技股份有限公司 | A kind of low concentration Multi-functional circular granular potash fertilizer and preparation method |
| CN108786655A (en) * | 2018-06-07 | 2018-11-13 | 国投新疆罗布泊钾盐有限责任公司 | A method of it improving potassium sulfate and is granulated intensity |
| CN110803959A (en) * | 2019-11-29 | 2020-02-18 | 烟台市烟农富邦肥料科技有限公司 | Special granulating agent for producing round granular calcium magnesium phosphate fertilizer and application thereof |
| CN113004081A (en) * | 2021-04-23 | 2021-06-22 | 湖北富邦科技股份有限公司 | Preparation method of instant drying-free round particle potash fertilizer |
| 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 |
| CN113307662A (en) * | 2021-06-15 | 2021-08-27 | 国投新疆罗布泊钾盐有限责任公司 | Spherical potassium sulfate bonding granulation method |
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