CN102690143A - Method for producing granular potassium chloride - Google Patents
Method for producing granular potassium chloride Download PDFInfo
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- CN102690143A CN102690143A CN2012100845460A CN201210084546A CN102690143A CN 102690143 A CN102690143 A CN 102690143A CN 2012100845460 A CN2012100845460 A CN 2012100845460A CN 201210084546 A CN201210084546 A CN 201210084546A CN 102690143 A CN102690143 A CN 102690143A
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Abstract
The invention relates to a method for producing granular potassium chloride and belongs to the technical field of manufacture of fertilizers. The method comprises the specific steps of preparation of a binder and pelleting of powdered potassium chloride; adding polyacrylic emulsion, whose solid content is 53%, in water in a container to uniformly agitate the polyacrylic emulsion and water, then sequentially adding benzyl alcohol, ethylene glycol, sodium benzoate and polyvinyl butyral in proportions, and fully and uniformly agitating the mixture. The process may be batch production or continuous production. If the process is batch production, the powdered potassium chloride is added to a disk pelletizer, and the binder is sprayed into rotary materials in proportion and pelletized into balls. The product is prepared by drying, cooling and sieving. If the process is continuous production, the powdered potassium chloride is added to a disk or rotary drum granulator; the binder is continuously sprayed into the rotary material in proportion and pelletized into balls, and the product is prepared by drying, cooling and sieving. The product is round and intact in particles, smooth in surface and high in strength. The product can be used as a bulk-blended fertilizer material. The top potassium oxide content of the product can be up to 59.5%.
Description
Technical field
The present invention relates to a kind of working method of granule potassium chloride, belong to fertilizer manufacturing technology field, what be specifically related to is to be the technological method of raw material manufacturing particulate state Repone K with powdery Repone K.
Background technology
Repone K is the principal item of potash fertilizer, and China's application of potash fertilizer overwhelming majority adopts Repone K as the potassium source.Repone K mainly contains two big types: one type is the potash fertilizer that the solid ore deposit exploits out, and containing potassium oxide is 60%, is generally red, is commonly called as red potassium, and water cut is low; Another kind of is the potash fertilizer that from Halogen salt solution, extracts, and is white, is commonly called as white potassium, and its potassium oxide content is about 54%～60%, and water cut is higher usually.
White potassium and red potassium are generally powdery or fine crystals shape.The fertilising of powdery Repone K is inconvenient, particularly can not satisfy the requirement of modern agriculture mechanized application.Therefore, generally need process particulate state to powdery Repone K.
The method of manufacture of granule potassium chloride mainly contains two kinds: 1. extrusion process: adopt tabletting machine or extrusion machine that powder Repone K is pushed in flakes by force, process finished product through processes such as fragmentation section, particle arrangement, screenings.The product particle that this method is produced is irregular, and corner angle are arranged, and is mobile poor, and fertilizer machinery can often stop up in the fertilising process; When with other particulate state nitrogenous fertilizer, phosphate fertilizer blending, occur demixing phenomenon easily, be difficult to mix, cause unevenness of application, and in the resettlement transportation, the easy efflorescence of friction each other between the particle; 2. agglomeration process: powdery Repone K is added tackiness agent, adopt the tablets press granulation, form through oven dry, cooling, screening.Because Repone K is difficult to granulation, for reducing the returning charge amount, often add the filler more than 20% at granulation process, like wilkinite, attapulgite etc.,, cause the reduction of granule potassium chloride content like this to improve the intensity of balling ratio and granulated product, increase production cost.With the Repone K of 60% potassium oxide content, can only produce the granule potassium chloride of 50% following potassium oxide content.The granule potassium chloride of low nutrient often receives the restriction of nutrient proportioning as the raw material of Bulk Blending Fertilizer.Therefore, screening suitable sticker, do not add filler, produce the granule potassium chloride that nutrient content is high, product strength is big, is the problem that this field presses for solution in the fertilizer industry.
Summary of the invention
The objective of the invention is with powdery Repone K is raw material, in disk or rotary drum granulator, adds the sticker for preparing and carries out granulation, and the consumption of sticker is 0.5%～12% of a Repone K weight of material.Make finished product through super-dry, cooling, screening again.This method have operating procedure simple, produce flexibly, low cost and other advantages, products obtained therefrom has characteristics such as uniform particles rounding, intensity are big, nutrient height, not only can satisfy the requirement of mechanized application, and can be as the raw material of Bulk Blending Fertilizer.
The present invention is achieved in that the method for manufacture step of this granule potassium chloride comprises:
(1) preparation of sticker: in container, be that 53% ACRYLIC EMULSION adds entry and stirs earlier, then phenylcarbinol, terepthaloyl moietie, Sodium Benzoate, polyvinyl butyral acetal added in proportion successively, stir with solid content.
Each component ratio range of sticker among the present invention is: solid content is ACRYLIC EMULSION 80～150 parts of (quality), water 20～100 parts of (quality), phenylcarbinol 3～6 parts of (quality), terepthaloyl moietie 2～5 parts of (quality), Sodium Benzoate 0.5～2 part of (quality), 5～10 parts of polyvinyl butyral acetals (quality) of 53%.
(2) granulation of powdery Repone K: this process can batch production, also can continuous production.If batch production joins fineness in the granulating disc less than 60 purpose powdery Repone K, the sticker that makes is injected in proportion in the material of rotation the granulation balling-up.After dry, cooling, screening, qualified particle gets product through packing.If continuous production joins fineness in disk or the rotary drum granulator less than 60 purpose powdery Repone K continuously, the sticker that makes is injected in the material of rotation in proportion continuously the granulation balling-up.Through dry, cooling, screening, qualified particle gets product through packing.
The particle diameter of the granule potassium chloride that makes among the present invention is 1～4.75 millimeter.In actual production, also can confirm the finished product particle size range on request.
Particle diameter directly returns tablets press less than 1 millimeter defective particle and carries out granulation again in the production process of the present invention, and the defective particle greater than 4.75 millimeters in the production process returns granulation again in the tablets press through after the crusher in crushing.The weight ratio of returning charge and raw material is 0.05～0.35: 1.
The present invention's sticker usage quantity in granulation process is 0.5%～12% of a material total mass.Be noted that: the add-on of adhesive for granulating and make the concentration of sticker and the product particle intensity of production has relation.When the sticker add-on is identical, use the lower concentration sticker, the product particle intensity that obtains is lower.When agglomerant concentration was identical, the binder amount of use was many more, and the product particle intensity that obtains is high more.
But the content of granular Repone K flexible as required among the present invention, the highest oxidation potassium content can reach 59.5%.The granular Repone K of producing low levels if desired then need add filler, filler can be contain in other, the fertilizer or the additive of trace element.
Technology of the present invention has the following advantages:
The granule potassium chloride product that adopts the inventive method to produce, the particle rounding, smooth surface, intensity is high, and can efflorescence in transportation.
Can be used as the raw material of Bulk Blending Fertilizer, the particle demixing phenomenon can not occur, nitrogen, phosphorus, potassium fertilizer particle mix.
Technical process of the present invention is short, easy to operate, energy consumption is low, production cost is low.Existing production of compound fertilizer enterprise does technological transformation slightly and just can produce granule potassium chloride.
The granule potassium chloride product potassium oxide content that adopts the inventive method to produce is high, can reach 59.5%.
Embodiment:, process method of the present invention is described through following instance.But instance is not a limitation of the present invention.
Instance 1
The preparation of sticker: in having the container of whipping appts, add solid content and be 110 parts of 53% ACRYLIC EMULSIONs; Start and stir; Add 50 parts of entry, stir, add 4 parts of phenylcarbinols, 3 parts of terepthaloyl moietie, 1 part of Sodium Benzoate, 8 parts of polyvinyl butyral acetals more successively.Stir, promptly make sticker.
This instance is a batch production.Is that 57% white powdery Repone K joins in the granulating disc for 1000 kilograms with fineness less than 60 order potassium oxide contents, sprays into 20 kilograms of the above-mentioned stickers for preparing, rotating granulation balling-up in granulating disc.Make 930 kilograms of particulate state Repone K finished products through super-dry, cooling, screening, potassium oxide content is 54.5% in this product.
Instance 2
The preparation of sticker: in having the container of whipping appts, add solid content and be 130 parts of 53% ACRYLIC EMULSIONs; Start and stir; Add 40 parts of entry, stir, add 5 parts of phenylcarbinols, 4 parts of terepthaloyl moietie, 1.5 parts of Sodium Benzoates, 9 parts of polyvinyl butyral acetals more successively.Stir, promptly make sticker.
This instance is a continuous production.To through and pulverizing and be that 60% red powdery Repone K joins in the rotary drum granulator by 3000 kilograms/hour, by double centner/hour spray into the above-mentioned sticker for preparing, granulation balling-up in rotary drum granulator less than 60 order potassium oxide contents.Making particle diameter through super-dry, cooling, screening is 1～4.75 millimeter granule potassium chloride finished product.Particle diameter returns rotary drum granulator greater than 4.75 millimeters particle after pulverizing, particle diameter directly returns in the tablets press as returning charge less than 1 millimeter particle.The weight ratio of returning charge and raw material is 0.16: 1, and potassium oxide content is 58.0% in the granulated product.
Claims (3)
1. the working method of a granule potassium chloride is characterized in that the step of this method comprises:
(1) preparation of sticker: in container, be that 53% ACRYLIC EMULSION adds entry and stirs earlier, then phenylcarbinol, terepthaloyl moietie, Sodium Benzoate, polyvinyl butyral acetal added in proportion successively, stir with solid content.
(2) granulation of powdery Repone K: this process can batch production, also can continuous production.If batch production joins fineness in the granulating disc less than 60 purpose powdery Repone K, the sticker that makes is injected in proportion in the material of rotation, the granulation balling-up, after dry, cooling, screening, qualified particle gets product through packing; If continuous production; Fineness is joined in disk or the rotary drum granulator less than 60 purpose powdery Repone K continuously; The sticker that makes is injected in the material of rotation in proportion continuously, and the granulation balling-up is through dry, cooling, screening; Qualified particle gets product through packing, after fragmentation, closes and returns granulation again in the tablets press together less than the particle of finished particle greater than the particle of finished particle.
2. the method for manufacture of a granule potassium chloride fertilizer as claimed in claim 1, it is characterized in that each component ratio range is in the sticker: solid content is ACRYLIC EMULSION 80～150 parts of (quality), water 20～100 parts of (quality), phenylcarbinol 3～6 parts of (quality), terepthaloyl moietie 2～5 parts of (quality), Sodium Benzoate 0.5～2 part of (quality), 5～10 parts of polyvinyl butyral acetals (quality) of 53%.
3. the method for manufacture of a granule potassium chloride fertilizer as claimed in claim 1 is characterized in that the sticker usage quantity is 0.5%～12% of a material total mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100845460A CN102690143A (en) | 2012-03-28 | 2012-03-28 | Method for producing granular potassium chloride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100845460A CN102690143A (en) | 2012-03-28 | 2012-03-28 | Method for producing granular potassium chloride |
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| CN102690143A true CN102690143A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100845460A Pending CN102690143A (en) | 2012-03-28 | 2012-03-28 | Method for producing granular potassium chloride |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103708852A (en) * | 2013-08-12 | 2014-04-09 | 绥芬河市石英经贸有限公司 | Simple-substance high content round hollow granular potassium fertilizer and preparation method thereof |
| CN107986887A (en) * | 2018-01-15 | 2018-05-04 | 中化农业（临沂）研发中心有限公司 | A kind of circle high intensity granule potassium chloride fertilizer and its manufacture method |
Citations (4)
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| JPH05279158A (en) * | 1991-12-04 | 1993-10-26 | Korea Advanced Inst Of Sci Technol | Production of delayed release particulate fertilizer |
| CN1101394A (en) * | 1994-06-07 | 1995-04-12 | 常德市现代建筑材料研究所 | Production of coating for external walls |
| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN1769248A (en) * | 2004-11-05 | 2006-05-10 | 上海化工研究院 | Granule potassium chloride production method |
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2012
- 2012-03-28 CN CN2012100845460A patent/CN102690143A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05279158A (en) * | 1991-12-04 | 1993-10-26 | Korea Advanced Inst Of Sci Technol | Production of delayed release particulate fertilizer |
| CN1101394A (en) * | 1994-06-07 | 1995-04-12 | 常德市现代建筑材料研究所 | Production of coating for external walls |
| CN1356298A (en) * | 2000-11-30 | 2002-07-03 | 南化集团研究院 | Process for preparing granular fertilizer |
| CN1769248A (en) * | 2004-11-05 | 2006-05-10 | 上海化工研究院 | Granule potassium chloride production method |
Non-Patent Citations (2)
| Title |
|---|
| 谷守玉等: "一种新型颗粒钾肥造粒粘结剂的配料试验", 《云南化工》 * |
| 邹鸿昌: "掺混肥料生产新技术和发展前景", 《化肥工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708852A (en) * | 2013-08-12 | 2014-04-09 | 绥芬河市石英经贸有限公司 | Simple-substance high content round hollow granular potassium fertilizer and preparation method thereof |
| CN103708852B (en) * | 2013-08-12 | 2016-04-06 | 绥芬河市石英经贸有限公司 | Simple-substance high content round hollow granular potassium fertilizer and preparation method thereof |
| 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 |
| 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 |
| CN107986887A (en) * | 2018-01-15 | 2018-05-04 | 中化农业（临沂）研发中心有限公司 | A kind of circle high intensity granule potassium chloride fertilizer and its manufacture method |
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Application publication date: 20120926 |