CN102464500A - Process scheme for preparing high-concentration round granular potash fertilizer - Google Patents
Process scheme for preparing high-concentration round granular potash fertilizer Download PDFInfo
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- CN102464500A CN102464500A CN2010105372869A CN201010537286A CN102464500A CN 102464500 A CN102464500 A CN 102464500A CN 2010105372869 A CN2010105372869 A CN 2010105372869A CN 201010537286 A CN201010537286 A CN 201010537286A CN 102464500 A CN102464500 A CN 102464500A
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- potash fertilizer
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 117
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 title claims abstract description 114
- 229940072033 potash Drugs 0.000 title claims abstract description 114
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 title claims abstract description 114
- 235000015320 potassium carbonate Nutrition 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title abstract description 14
- 238000005469 granulation Methods 0.000 claims abstract description 57
- 230000003179 granulation Effects 0.000 claims abstract description 57
- 239000002994 raw material Substances 0.000 claims abstract description 51
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002253 acid Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 238000012216 screening Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000008188 pellet Substances 0.000 claims description 44
- 235000019353 potassium silicate Nutrition 0.000 claims description 29
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 18
- 159000000013 aluminium salts Chemical group 0.000 claims description 8
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000376 reactant Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract description 22
- 238000005096 rolling process Methods 0.000 abstract description 11
- 239000004115 Sodium Silicate Substances 0.000 abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 27
- 239000000463 material Substances 0.000 description 22
- 239000007921 spray Substances 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229940037003 alum Drugs 0.000 description 4
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 4
- 229910001950 potassium oxide Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
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- Fertilizers (AREA)
Abstract
The invention discloses a process scheme for preparing a high-concentration round granular potash fertilizer, which comprises the following steps: the method comprises the steps of putting a powdery potash fertilizer raw material sold in the market in a disc granulator or a rotary drum granulator, spraying an aluminum sulfate/acid solution and a sodium silicate solution with certain concentration as granulation adhesives in proportion, carrying out rolling granulation, drying and screening to obtain a round granular potash fertilizer product. The invention has the advantages of simple operation process, low cost, large production capacity, round and smooth product particles, high strength and the like, does not generate three wastes in production, saves energy, protects environment and has very wide market prospect.
Description
One: technical field
The present invention relates to a kind of process program of making granular potash fertilizer, particularly disclose the fabrication scheme that a kind of potassium oxide content can reach the high density pellet potash fertilizer more than 60%.
Two: background technology
, mechanized application technological continuous development fertile along with BB, increasing to the demand of high concentration particle potash fertilizer products, the domestic market demand amount is between ten thousand tons of the 80-100 at present; Most dependence on import, and mostly be the irregular blocky-shaped particle that extruder grain is produced, particle has corner angle; Be unfavorable for mechanized application, also be unfavorable for doing the fertile raw material of BB, this type of potash fertilizer is done the fertile raw material of BB; Be prone to produce the segregation layering, cause the irregular result of use that influences of nutrient, mechanized application easy blocking machinery.And the extruder grain process characteristic is that power consumption is big, and production capacity is restricted.The pellet potash fertilizer that existing pellet granulation is produced all is directly in raw material, to add a large amount of stickers, has both increased cost, and potassium oxide content significantly reduces (less than 45%) in the product, is not suitable for the market requirement, does not form scale.At present, high density pellet potash fertilizer has become restraining factors of BB fertilizer and mechanized application technical development.
Three: summary of the invention
For solving above-mentioned technical problem that can not production high density pellet potash fertilizer; The present invention provides a kind of process program of making high density pellet potash fertilizer; Potassium oxide content of the present invention can reach 60%; Production cost is low, operating procedure is simple, be fit to the fertile enterprise of existing compound and utilize existing installation to carry out scale prodn, has solved the drawback that extruder grain technology granular potash fertilizer is inappropriate for mechanized application.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
Strong acid weak base salt or acid and mensuration dissolubility silicic reactant salt generate colloidal cpd, colloidal cpd and the granulation of potash fertilizer raw materials mix; Make granular potash fertilizer with granulated through oven dry, screening, cooling.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, said strong acid weak base salt is an aluminium salt, acid is sulfuric acid; Soluble silicate is water glass or Starso.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, with strong acid weak base salt and the water-soluble formation solution of soluble silicate difference, the potash fertilizer raw material places in the spheronizator; The solution that makes is evenly sprayed in the potash fertilizer raw material the round as a ball granulation while spraying simultaneously; Make granular potash fertilizer with granulated through oven dry, screening, cooling.
The process program of above-mentioned manufacturing high density pellet potash fertilizer with powdery strong acid weak base salt and potash fertilizer raw materials mix,, sprays into this solution in the mixture the round as a ball granulation while spraying with the water-soluble formation solution of soluble silicate; Granulation product is made pellet potash fertilizer through oven dry, screening, cooling.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, with the water-soluble formation solution of soluble silicate, acid is diluted with water to low concentration solution, and the potash fertilizer raw material is placed spheronizator; The solution that makes is evenly sprayed in the potash fertilizer raw material round as a ball granulation while spraying; Make granular potash fertilizer with granulated through oven dry, screening, cooling.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, said potash fertilizer raw material, aluminium salt/sulfuric acid, water glass/Starso three's mass percent is 100: (0.8-1.6): (1.6-2.4);
The process program of above-mentioned manufacturing high density pellet potash fertilizer, the concentration of said aluminium salt/sulfuric acid, water glass/Starso obtain solution is 20%.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, the granularity of said powdery potash fertilizer raw material is greater than 60 orders.
The process program of above-mentioned manufacturing high density pellet potash fertilizer, the drying temperature after the said potash fertilizer granulation is 150～200 ℃, drying time 20-40 minute.
Principle of work of the present invention is: utilize strong acid weak base salt or acid and mensuration dissolubility silicic reactant salt to generate cementing matter; As long as both reactions can form cementing matter; Such as utilizing industrial aluminum sulphate/sulfuric acid and water glass/Starso reaction, form cementing matter, bonding round as a ball granulation.
Beneficial effect of the present invention shows:
1, compare with traditional prilling process, the initiative specific chemical reaction that utilizes of the present invention forms newborn adhesive bond, have active big, cementing power is strong, additive is few, low cost and other advantages.
2, present method is produced potash fertilizer minimum is reduced in the influence of potash fertilizer content, realizes high density, HS, the mellow and full pellet potash fertilizer production of outward appearance.
3, the potash fertilizer raw material adopt Powdered and granularity greater than 60 orders, the round shaped grain potash fertilizer under this fineness, produced bonding is finer and close, granule strength is higher.
4, adopt water glass and aluminium salt/acid-respons to form the cementing matter granulation, transform through reaction and hyperthermia drying, residual dry-matter is (1～2%) seldom, and is less to the potash fertilizer content influence, guaranteed the high density of granular potash fertilizer.
5, baking step: 150～200 ℃ of bake out temperatures; Drying time is 20～40 minutes, adopts big air quantity, and oven dry potassium fertilizer particle to moisture is less than 1%; And make the cementing matter pyrolytic conversion; Siliceous colloid is converted into silicon-dioxide, and white lake is converted into aluminum oxide, has further improved cementing power and granule strength.
6, potassium oxide content is high in the potash fertilizer that generates of present method, can be up to more than 60%, but to raw-material less demanding, commercially available 54～62% powder potash fertilizer all can use, and it is obvious to compare existing product advantage.
7, this potassium fertilizer particle is even, mellow and full, intensity is high, prevented from caking, is convenient to user's use and has guaranteed the implementation result of potash fertilizer.
8, to have a production cost low in the present invention, and operating procedure is simple, and the finished product rate is high, and throughput is big, is fit to the fertile scope of the enterprise production of compound.
No matter this shows, still be that production capacity significantly is superior to the granular potash fertilizer that extrusion process is produced from outward appearance, the scope of application, has great application value.
Four: embodiment:
Describe the present invention below in conjunction with specific embodiment:
Embodiment one
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: strong acid weak base salt adopts Tai-Ace S 150, and soluble silicate adopts water glass, and raw material is Powdered potash fertilizer raw material, wherein potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 1.6: 0.8; It is that 20% solution is processed subsequent use that water glass and Tai-Ace S 150 are processed concentration respectively.
B, granulation: the potash fertilizer raw material is added into granulating disc or rotary drum granulator, in the material rolling process, in the potash fertilizer raw material that rolls, evenly sprays sodium silicate solution and alum liquor simultaneously through different spray nozzles and carry out granulation.
C, oven dry: granulation is turned oven dry 40 minutes through the fertile drying plant of compound under 150 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment two
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: strong acid weak base salt adopts Tai-Ace S 150, and soluble silicate adopts water glass, and raw material is Powdered potash fertilizer raw material, wherein potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 2.4: 1.6; It is that 20% solution is processed subsequent use that water glass and Tai-Ace S 150 are processed concentration respectively.
B, granulation: the potash fertilizer raw material is added into granulating disc or rotary drum granulator, in the material rolling process, in the potash fertilizer raw material that rolls, evenly sprays sodium silicate solution and alum liquor simultaneously through different spray nozzles and carry out granulation.
C, oven dry: granulation is turned oven dry 20 minutes through the fertile drying plant of compound under 200 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment three
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: strong acid weak base salt adopts Tai-Ace S 150, and soluble silicate adopts water glass, and raw material is Powdered potash fertilizer raw material, wherein potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 2.2: 1.0; It is that 20% solution is processed subsequent use that water glass and Tai-Ace S 150 are processed concentration respectively.
B, granulation: the potash fertilizer raw material is added into granulating disc or rotary drum granulator, in the material rolling process, in the potash fertilizer raw material that rolls, evenly sprays sodium silicate solution and alum liquor simultaneously through different spray nozzles and carry out granulation.
C, oven dry: granulation is turned oven dry 40 minutes through the fertile drying plant of compound under 150 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment four
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: commercially available 62% powdery potash fertilizer (granularity 60 orders) raw material and powdery Tai-Ace S 150 are mixed and made into granulation use material; Soluble silicate adopts water glass, and potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 2.4: 1.6 is mixed with concentration 20% solution with water glass and processes subsequent use.
B, granulation: a step is processed granulation be added into granulating disc or rotary drum granulator, evenly spray sodium silicate solution at the material rolling process and carry out granulation with material.
C, oven dry: granulation is turned oven dry 40 minutes through the fertile drying plant of compound under 150 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Potassium content can reach more than 60% after 62% powdery potash fertilizer utilized this method of manufacture to accomplish.
Embodiment five
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, commercially available 54% powdery potash fertilizer (granularity 80 orders) raw material and powdery Tai-Ace S 150 are mixed and made into granulation use material; Soluble silicate adopts water glass, and potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 1.6: 0.6 is mixed with concentration 20% solution with water glass and processes subsequent use.
B, granulation: a step is processed granulation be added into granulating disc or rotary drum granulator, evenly spray sodium silicate solution at the material rolling process and carry out granulation with material.
C, oven dry: granulation is turned oven dry 20 minutes through the fertile drying plant of compound under 200 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Potassium content can reach 52% after 54% powdery potash fertilizer utilized this method of manufacture to accomplish.
Embodiment six
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: commercially available 57% powdery potash fertilizer (granularity 100 orders) raw material and powdery Tai-Ace S 150 are mixed and made into granulation use material; Potash fertilizer raw material, water glass, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 2.0: 1.2; Water glass is mixed with concentration 20% solution to be processed subsequent use.
B, granulation: a step is processed granulation be added into granulating disc or rotary drum granulator, evenly spray sodium silicate solution at the material rolling process and carry out granulation with material.
C, oven dry: granulation is turned oven dry 30 minutes through the fertile drying plant of compound under 180 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Potassium content can reach 56% after 57% powdery potash fertilizer utilized this method of manufacture to accomplish.
Embodiment seven
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: the potash fertilizer raw material with sulfuric acid, water glass according to massfraction than 100: 1.9: 1.4.Sulfuric acid is adopted in acid, is diluted to 20% solution; Soluble silicate adopts water glass, and proportioning is 20% aqueous solution, and is subsequent use.
B, granulation: commercially available powdery potash fertilizer (granularity is greater than 60 orders) raw material is added into granulating disc or rotary drum granulator, in the material rolling process, two solution that prepare among a evenly is sprayed on the material, carry out round as a ball granulation through different spray nozzles.
C, oven dry: granulation is turned oven dry 20 minutes through the fertile drying plant of compound under 150 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment eight
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: the potash fertilizer raw material with sulfuric acid, water glass according to massfraction than 100: 1.7: 1.5.Sulfuric acid is adopted in acid, is diluted to 20% solution; Soluble silicate adopts water glass, and proportioning is 20% aqueous solution, and is subsequent use.
B, granulation: commercially available powdery potash fertilizer (granularity 100 orders) raw material is added into granulating disc or rotary drum granulator, in the material rolling process, two solution that prepare among a evenly is sprayed on the material, carry out round as a ball granulation through different spray nozzles.
C, oven dry: granulation is turned oven dry 40 minutes through the fertile drying plant of compound under 200 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment nine
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: soluble silicate adopts the powdery Starso, powdery potash fertilizer raw material and powdery Starso is mixed and made into granulation uses material; Salt adopts Tai-Ace S 150, potash fertilizer raw material, Starso, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 1.7: 1.4, and it is 20% solution for standby that Tai-Ace S 150 is mixed with concentration.
B, granulation: a step is processed granulation be added into granulating disc or rotary drum granulator, evenly spray alum liquor at the material rolling process and carry out granulation with material.
C, oven dry: granulation is turned oven dry 20 minutes through the fertile drying plant of compound under 150 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiment ten
A kind of process program of making high density pellet potash fertilizer may further comprise the steps:
A, batching: soluble silicate adopts the powdery Starso, powdery potash fertilizer raw material and powdery Starso is mixed and made into granulation uses material; Salt adopts Tai-Ace S 150, potash fertilizer raw material, Starso, Tai-Ace S 150 three's ratio of quality and the number of copies 100: 2.1: 1.3, and it is 20% solution for standby that Tai-Ace S 150 is mixed with concentration.
B, granulation: a step is processed granulation be added into granulating disc or rotary drum granulator, evenly spray sodium silicate solution at the material rolling process and carry out granulation with material.
C, oven dry: granulation is turned oven dry 40 minutes through the fertile drying plant of compound under 200 ℃;
Screening makes the pellet potash fertilizer products behind d, the naturally cooling.
Embodiments of the invention not only are confined to above embodiment, and the kind of strong acid weak base salt, acid, soluble silicate not only is confined within this embodiment, and strong acid weak base salt comprises aluminium salt, molysite, ammonium salt etc.; Acid comprises sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid etc.; Soluble silicate comprises sylvite, sodium salt, metasilicate, as long as both reactions can form colloidal cpd.
Claims (9)
1. process program of making high density pellet potash fertilizer is characterized in that: may further comprise the steps:
Strong acid weak base salt or acid and mensuration dissolubility silicic reactant salt generate colloidal cpd, colloidal cpd and the granulation of potash fertilizer raw materials mix;
Make granular potash fertilizer with granulated through oven dry, screening, cooling.
2. the process program of manufacturing high density pellet potash fertilizer according to claim 1 is characterized in that:
Said strong acid weak base salt is an aluminium salt, and acid is sulfuric acid; Soluble silicate is water glass or Starso.
3. the process program of manufacturing high density pellet potash fertilizer according to claim 1 and 2 is characterized in that:
With strong acid weak base salt and the water-soluble formation solution of soluble silicate difference, the potash fertilizer raw material places in the spheronizator;
The solution that makes is evenly sprayed in the potash fertilizer raw material the round as a ball granulation while spraying simultaneously;
Make granular potash fertilizer with granulated through oven dry, screening, cooling.
4. the process program of manufacturing high density pellet potash fertilizer according to claim 1 and 2 is characterized in that:
With powdery strong acid weak base salt and potash fertilizer raw materials mix,, this solution is sprayed in the mixture round as a ball granulation with the water-soluble formation solution of soluble silicate while spraying;
Granulation product is made pellet potash fertilizer through oven dry, screening, cooling.
5. the process program of manufacturing high density pellet potash fertilizer according to claim 1 and 2 is characterized in that:
With the water-soluble formation solution of soluble silicate, acid is diluted with water to low concentration solution, and the potash fertilizer raw material is placed spheronizator; The solution that makes is evenly sprayed in the potash fertilizer raw material round as a ball granulation while spraying;
Make granular potash fertilizer with granulated through oven dry, screening, cooling.
6. process program according to claim 2 is characterized in that: said potash fertilizer raw material, aluminium salt/sulfuric acid, water glass/Starso three's mass percent is 100: (0.8-1.6): (1.6-2.4).
7. process program according to claim 6 is characterized in that: the concentration of said aluminium salt/sulfuric acid, water glass/Starso obtain solution is 20%.
8. process program according to claim 1 is characterized in that: the granularity of said powdery potash fertilizer raw material is greater than 60 orders.
9. process program according to claim 1 is characterized in that: the drying temperature after the said potash fertilizer granulation is 150～200 ℃, drying time 20-40 minute.
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| CN2010105372869A CN102464500A (en) | 2010-10-29 | 2010-10-29 | Process scheme for preparing high-concentration round granular potash fertilizer |
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| CN2010105372869A CN102464500A (en) | 2010-10-29 | 2010-10-29 | Process scheme for preparing high-concentration round granular potash fertilizer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664356A (en) * | 2013-11-25 | 2014-03-26 | 滁州华冶机电科技有限公司 | Pellet potash fertilizer pelletizing technology |
| US11306033B2 (en) | 2016-12-17 | 2022-04-19 | Dead Sea Works Ltd. | Process for the production of potassium sulphate and magnesium sulphate from carnallite and sodium sulphate |
| US12017198B2 (en) | 2018-02-27 | 2024-06-25 | Dead Sea Works Ltd. | Potash dust granulation process |
| US12195409B2 (en) | 2018-11-23 | 2025-01-14 | Icl Europe Cooperatief U.A. | Compacted Polyhalite and a process for the production thereof |
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| CN101289348A (en) * | 2008-06-02 | 2008-10-22 | 屈智和 | Long active organic compounded fertilizer and production method |
| CN101343206A (en) * | 2008-09-05 | 2009-01-14 | 中国-阿拉伯化肥有限公司 | Process for preparing circular particle kalium based fertilizer |
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