CN1182085C - Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating - Google Patents
Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating Download PDFInfo
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- CN1182085C CN1182085C CNB021030081A CN02103008A CN1182085C CN 1182085 C CN1182085 C CN 1182085C CN B021030081 A CNB021030081 A CN B021030081A CN 02103008 A CN02103008 A CN 02103008A CN 1182085 C CN1182085 C CN 1182085C
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- Prior art keywords
- fertilizer
- concentration compound
- potassium
- repone
- tower
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 24
- 150000001875 compounds Chemical class 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004202 carbamide Substances 0.000 claims abstract description 12
- 239000011591 potassium Substances 0.000 claims abstract description 12
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010457 zeolite Substances 0.000 claims abstract description 10
- 238000005469 granulation Methods 0.000 claims description 20
- 230000003179 granulation Effects 0.000 claims description 20
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 12
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 12
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 12
- 239000006012 monoammonium phosphate Substances 0.000 claims description 12
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 10
- 208000006558 Dental Calculus Diseases 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 241000209140 Triticum Species 0.000 abstract description 2
- 235000021307 Triticum Nutrition 0.000 abstract description 2
- 240000008042 Zea mays Species 0.000 abstract description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 abstract description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 2
- 235000005822 corn Nutrition 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 235000013311 vegetables Nutrition 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 239000001103 potassium chloride Substances 0.000 abstract 2
- 235000011164 potassium chloride Nutrition 0.000 abstract 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 abstract 2
- 229910052939 potassium sulfate Inorganic materials 0.000 abstract 2
- 235000011151 potassium sulphates Nutrition 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- FZFYOUJTOSBFPQ-UHFFFAOYSA-M dipotassium;hydroxide Chemical compound [OH-].[K+].[K+] FZFYOUJTOSBFPQ-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The present invention relates to a method for preparing high-concentration compound N-P-K fertilizer by tower-type granulating. In the method, a powder material containing phosphorus and potassium is added into a urea melting solution; after the powder material and the urea melting solution are mixed and stirred, a melt slurry is generated; the powder material containing potassium is potassium chloride or potassium sulfate. The present invention is characterized in that calcium carbonate as an auxiliary material is added into the melt slurry containing the potassium chloride, and zeolite is added into the melt slurry containing the potassium sulfate. The method can be used for continuously producing products with various specifications, has the advantages of good sphericity of granules and good surface glossiness. Compared with a home-made 15-15-15 specification compound fertilizer, when the high-concentration compound N-P-K fertilizer is applied to crops, such as corn, wheat, vegetables, etc., the yield of the crops can be respectively increased by 15%, 17% and 15%, and the high-concentration compound N-P-K fertilizer has obvious effect.
Description
Technical field
The invention belongs to the chemical technique field, relate to the method that a kind of tower granulation is produced high-concentration compound N-P-K fertilizer.
Background technology
China produces NPK composite fertilizer and all adopts the granulating method production technique at present; comprise disk granulation, extruder grain, drum granulating etc.; wherein urine spray drum granulating is the most up-to-date techniques of the NPK of production high density in recent years composite fertilizer; it is to be solid phase with phosphorus, potassium raw material; spray adding urine makes it to roll and is shaped in rotary drum granulator; owing to must possess the solid phase of enough " granule " in this method, thus provide the nitrogen content of liquid phase must be controlled at interior very among a small circle and content enough low, generally with N: P
2O
5: K
2O=1: be main at 1: 1, as Industrial products 15-15-15, in fact the growth demand of crop is still based on nitrogen, and such proportional range does not fit into the requirement of various crops or various regions soil regime, according to detecting, the average demand of N, P, K was the best with 1: 0.6: 0.35 in China's fertilizer, simultaneously, this technology particle balling preparation degree is poor, and satisfactory balling ratio is low, and the returning charge that also must possess more than 30% can granulation, and its yield rate only reaches 50-70%.
The principle of tower granulation production high density NPK composite fertilizer is to add phosphorus, potassium powder in the fused solution of urea, form a kind of mixture of eutectoid point, after mixing certain hour, directly leak in the rotary nozzle of tablets press and carry out granulation, as described in Chinese patent CN99127008.8, still, this technology of producing NPK composite fertilizer, its defective is: 1) mixed slurry does not possess enough surface tension, causes shaping bad; 2) viscosity of mixed slurry is excessive, thereby stops up shower nozzle; 3) three kinds of raw materials mix back generation chemical reaction, cause the ammonia loss excessive.
Summary of the invention
The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of shaping well, the method that yield rate is high and tower granulation granulation continuously is produced high-concentration compound N-P-K fertilizer.
Technical scheme of the present invention is as follows:
A kind of tower granulation is produced the method for high-concentration compound N-P-K fertilizer, its technological process will be for being crushed to 0.3 millimeter monoammonium phosphate, Repone K or vitriolate of tartar, lime carbonate or zeolite powder, mix, join in the fused urea soln after dry the intensification, mix, stirred 4-8 minute, generate molten slurry, keeping slurry temperature is 115-130 ℃, above-mentioned urea, monoammonium phosphate, the additional proportion of Repone K or vitriolate of tartar is 2-4: 1-2: 1, aforementioned proportion is in weight ratio, described lime carbonate joins in the molten slurry that contains Repone K, and zeolite joins in the molten slurry of sulfur acid potassium;
The add-on of above-mentioned lime carbonate is the 5-10% of total raw material amount, and the add-on of zeolite is the 10-20% of total raw material amount.
Above-mentioned mixing, churning time were controlled at 4-8 minute, and the time that prevents is too short, caused and mixed inequality, and overlong time produces and puts ammonia react.
All the other powders in present method except that urea all need be crushed to about 60 orders (sieve diameter of 60 order correspondences is 0.3 millimeter), prevent the excessive obstruction spray nozzle of particle, and particle is too small should not to be mixed with urine.
Principle of the present invention is: the potassium source comes from Repone K or vitriolate of tartar in present method, because the difference of Repone K and vitriolate of tartar physical properties aspect, the material properties difference that causes slip: it is little 1) to contain the slip viscosity of Repone K, dispersity is big, the drip gauge surface tension is little, and material thermal conductivity difference, cause the granulation difficulty, be prone to hollow bead, so adding, the present invention has highly close-burning lime carbonate in containing the slip of Repone K, can effectively remedy the deficiency of above-mentioned major ingredient, improve the material granulation performance, improve balling ratio and yield rate; 2) the slip viscosity of sulfur acid potassium is big, dispersity is little, the drip gauge surface tension is big, easily be shaped, but excessive, very easily stop up spray nozzle and can't continue granulation because of its viscosity, therefore, the present invention adds cohesiveness in the slip of sulfur acid potassium little, and the zeolite powder that dispersity is bigger can effectively improve the material granulation performance, guarantee granulation process smooth and easy carrying out continuously, simultaneously, because zeolite powder as soil structure improved addictive matrix and slow release fertilizer matrix, has crucial effect for improving the supply situation of soil nutrient to plant, and in soil, use, can not cause available phosphorus and water-soluble phosphorus fixation, improve the Soil Potassium situation, effectively improve fertilizer efficiency.
But present method production high density NPK composite fertilizer, the main products specification is: 1) make potassium source: 24-12-6,24-12-12,25-10-10 with Repone K; 2) make potassium source: 24-12-6 with vitriolate of tartar.
Experimental results show that, present method is to the equal energy of above-mentioned prescription continuous production, its particle balling preparation degree is good, surface gloss is good, yield rate can reach more than 95%, this product is used in farm crop such as corn, wheat, vegetables respectively, and than homemade 15-15-15 specification composite fertilizer volume increase 15%, 17%, 15%, effect is obvious respectively.
Following table is N-P
2O
5-K
2O=25: 10: 10 quality inspection report, detect by quality of chemical products supervision and inspection station, Ningxia Hui Autonomous Region, detect and number be: No. 121, (2001) chemical industry station searching the 2001st committee:
| Sequence number | Interventions Requested | Technical indicator | Assay | Individual event is judged |
| 1 | Effective Vanadium Pentoxide in FLAKES (P 2O 5) content % | 11.47 | ||
| 2 | Total nitrogen (N) content % | 24.45 | ||
| 3 | Potassium oxide (K 2O) content % | 10.46 | ||
| 4 | Total oxygen branch (N+P 2O 5+K 2O) content % 〉= | 45 | 46.38 | Qualified |
| 5 | Water-soluble phosphorus accounts for available phosphorus percentage % | 50 | 85.26 | Qualified |
| 6 | Moisture %≤ | 2.5 | 1.3 | Qualified |
| 7 | The average anti-crushing power of particle (2.00-2.80mm) N 〉= | 6 | 9.4 | Qualified |
| 8 | Granularity (1.00-4.75mm) percentage % 〉= | 90 | 99 | Qualified |
Embodiment
Embodiment 1:
Get monoammonium phosphate (MAP) 21.0kg that is crushed to about 60 orders, Repone K (KCl) 19.8kg, lime carbonate (CaCO
3) the 9.7kg powder; join in the fusing urea solution of 49.5kg after mixing, the dry intensification; fully stirred 5 minutes; keeping slurry temperature is 118 ℃; then melting charge slurry is leaked in the rotary nozzle on the tower type pelletizer top, granulation and cooling, qualified particle is high density NPK composite fertilizer; product specification is: 25-10-10, product contained humidity 1.3%, the average anti-crushing power 9.4N of particle, yield rate 99%.
Embodiment 2
Get monoammonium phosphate (MAP) 25.1kg that is crushed to about 60 orders, Repone K (KCl) 23.8kg, lime carbonate (CaCO
3) the 4.7kg powder; join in the fusing urea solution of 46.4kg after mixing, the dry intensification; fully stirred 8 minutes, keeping slurry temperature is 118 ℃, then melting charge slurry is leaked in the rotary nozzle on the tower type pelletizer top; granulation and cooling; qualified particle is high density NPK composite fertilizer, and product specification is: 24-12-12, after testing; every index is all qualified, and yield rate reaches more than 98%.
Embodiment 3
Get monoammonium phosphate (MAP) 25.1kg that is crushed to about 60 orders, Repone K (KCl) 11.9kg, lime carbonate (CaCO
3) the 16.6kg powder; join in the fusing urea solution of 46.4kg after mixing, the dry intensification; fully stirred 6 minutes, keeping slurry temperature is 116 ℃, then melting charge slurry is leaked in the rotary nozzle on the tower type pelletizer top; granulation and cooling; qualified particle is high density NPK composite fertilizer, and product specification is: 24-12-6, after testing; every index is all qualified, and yield rate reaches more than 98%.
Embodiment 4
Get monoammonium phosphate (MAP) 25.1kg that is crushed to about 60 orders, vitriolate of tartar (K
2SO
4) 12.2kg; zeolite powder 16.3kg powder joins in the fusing urea solution of 46.4kg after mixing, the dry intensification, fully stirs 6 minutes; keeping slurry temperature is 125 ℃; then melting charge slurry is leaked in the rotary nozzle on the tower type pelletizer top, granulation and cooling, qualified particle is high density NPK composite fertilizer; product specification is: 24-12-6; after testing, every index is all qualified, and yield rate reaches more than 98%.
Claims (2)
1. a tower granulation is produced the method for high-concentration compound N-P-K fertilizer, its technological process will be for being crushed to 0.3 millimeter monoammonium phosphate and Repone K or vitriolate of tartar and lime carbonate or zeolite powder, mix, join in the fused urea soln after dry the intensification, mix, stirred 4-8 minute, generate molten slurry, keeping slurry temperature is 115-130 ℃, above-mentioned urea, monoammonium phosphate, the additional proportion of Repone K or vitriolate of tartar is 2-4: 1-2: 1, aforementioned proportion is in weight ratio, described lime carbonate joins in the molten slurry that contains Repone K, and zeolite joins in the molten slurry of sulfur acid potassium.
2. by the method for the described tower granulation production of claim 1 high-concentration compound N-P-K fertilizer, it is characterized in that: the add-on of above-mentioned lime carbonate is the 5-10% of total raw material amount, and the add-on of zeolite is the 10-20% of total raw material amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021030081A CN1182085C (en) | 2002-01-31 | 2002-01-31 | Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021030081A CN1182085C (en) | 2002-01-31 | 2002-01-31 | Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating |
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| Publication Number | Publication Date |
|---|---|
| CN1365959A CN1365959A (en) | 2002-08-28 |
| CN1182085C true CN1182085C (en) | 2004-12-29 |
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|---|---|---|---|
| CNB021030081A Expired - Fee Related CN1182085C (en) | 2002-01-31 | 2002-01-31 | Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759478B (en) * | 2009-12-24 | 2012-08-29 | 成都市新都化工股份有限公司 | Preparation method of compound fertilizer |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383091C (en) * | 2004-12-27 | 2008-04-23 | 上海化工研究院 | Granulating Method in tower type for producing complex fertilizer of nitrogen, phosphor and potass |
| CN101440004B (en) * | 2008-12-22 | 2012-02-15 | 张超 | Method for preparing high tower control release compound fertilizer |
| CN102030592B (en) * | 2010-11-10 | 2013-01-30 | 张超 | Tower-granulated low-nitrogen high-phosphorus urine sulfur radical compound fertilizer and preparation method thereof |
| CN104449761A (en) * | 2014-11-20 | 2015-03-25 | 蒋战英 | Liquid crystal compound containing difluoromethoxy bridged bonds and application thereof |
| CN108998045A (en) * | 2018-07-10 | 2018-12-14 | 长沙浩然医疗科技有限公司 | Concave convex rod soil conditioner and preparation method thereof |
-
2002
- 2002-01-31 CN CNB021030081A patent/CN1182085C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759478B (en) * | 2009-12-24 | 2012-08-29 | 成都市新都化工股份有限公司 | Preparation method of compound fertilizer |
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| Publication number | Publication date |
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| CN1365959A (en) | 2002-08-28 |
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Address after: No. 750 West Beijing Road, Xixia District, the Ningxia Hui Autonomous Region, Yinchuan Patentee after: Ningxia Kaiyuan Huafeng Chemical Limited by Share Ltd Address before: No. 750 West Beijing Road, Xixia District, the Ningxia Hui Autonomous Region, Yinchuan Patentee before: Ningxia Fengyou Chemical Co., Ltd. |
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