CN1218908C - Potassium chloride united pelleting process - Google Patents
Potassium chloride united pelleting process Download PDFInfo
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- CN1218908C CN1218908C CN 03112963 CN03112963A CN1218908C CN 1218908 C CN1218908 C CN 1218908C CN 03112963 CN03112963 CN 03112963 CN 03112963 A CN03112963 A CN 03112963A CN 1218908 C CN1218908 C CN 1218908C
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- repone
- raw material
- agglomeration granulation
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Abstract
The present invention discloses a technology for granulating potassium chloride by aggregation, potassium chloride as raw material, adhesive and additives are proportionally mixed, the mixture enters an aggregation granulating apparatus, the aggregation granulating technology and the use of the adhesive are the same as those of the prior art, and obtained granules are dried, cooled and sieved to obtain finished products; the main additive component is ferrous material, and the used weight is 3% to 30% of the weight of the potassium chloride as raw material. In the present invention, the granulating performance of the material is improved by adding additives, and the intensity of the wet granules is improved; thereby, the potassium chloride can be granulated by using the aggregation granulating technology, and the defect in the prior art that the circular granular potassium chloride can be produced is overcome.
Description
Technical field
The claimed technical scheme of the present invention belongs to the agglomeration granulation technical field in the chemical fertilizers production, specifically a kind of method of utilizing agglomeration granulation explained hereafter potassium chloride particle granulated fertilizer.
Background technology
Compare with powdered fertilizer, the granulated fertilizer good physical performance does not play dirt during loading and unloading, and long-term storage is not lumpd, good fluidity, and easy spreading during fertilising, and can realize that aircraft broadcasts fertilizer, and also can play slow releasing function simultaneously, improve fertilizer utilization ratio.In addition, kind is different but the close granulated fertilizer of size can be realized direct blending, and the resultant fertilizer of BB cheaply has the fertilizer efficiency same with composite fertilizer.Therefore fertiliser granulatesization is one of development trend of current chemical fertilizer.The principal element that influences at present the fertile development of BB is to lack the particularly round granulous granular potash fertilizer of granular potash fertilizer.Such as in China, granulated phosphate fertilizer has had certain scale, granular urea has also had very big development in recent years, these provide phosphate fertilizer, nitrogenous fertilizer raw material basis for development BB fertilizer, therefore but the Repone K as a kind of main potash fertilizer but is difficult to produce round granulous particle always, makes the development of BB fertilizer in default of potash fertilizer raw material basis and be subjected to very big obstruction.
Repone K mainly contains two kinds of products, a kind of be commonly called as red potassium exploit out from the solid ore deposit, red Repone K as the production of states such as Russia, Canada, another kind is the white Repone K that is commonly called as white potassium that extracts from Halogen salt solution, China has only this a kind of owing to lack the solid ore resources basically.No matter be red potassium or white potassium, their main component all is identical, carries out granulation according to a conventional method, all exists wet particle intensity poor, is unable to undergo the defective of offering of dry kiln, thereby is difficult to carry out agglomeration granulation.So granular potash fertilizer all is to adopt the roll-type extrusion process to produce basically in the world at present, its product is irregular platy shaped particle, uses as BB is fertile, fertilizer efficiency segregation phenomenon takes place easily, so embarrass market to accept.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of prilling process that can produce single-size shape potash fertilizer.
The technical scheme of production granule potassium chloride proposed by the invention is: Repone K raw material, the agglomeration granulation that will be called white potassium or red potassium are mixed the laggard granulating equipment of going into to reunite with caking agent with addition material, agglomeration granulation technology is routinely carried out agglomeration granulation, gained particle drying, cooling, screening, get product, it is characterized in that: described addition material composition is a ferrous sulfate, and the weight part of its use accounts for the 3%-30% of Repone K raw material weight; Described caking agent is the phosphogypsum that weight part accounts for the 5%-35% of Repone K raw material weight, perhaps accounts for the semi-hydrated gypsum of the 5%-20% of Repone K raw material weight for weight part, perhaps accounts for the wilkinite of the 3%-20% of Repone K raw material weight for weight part.
Find by repeatedly testing: ferrous iron material can significantly increase wet particle intensity as the addition material that uses in the Repone K agglomeration granulation method.Be advisable at the 5%-15% ferrous sulfate that the agglomeration granulation of white potassium selects for use weight part to account for the Repone K raw material weight; Be advisable at the 15%-25% ferrous sulfate that the agglomeration granulation of red potassium selects for use weight part to account for the Repone K raw material weight; Ferrous sulfate is selected FeSO for use
47H
2O is advisable.
Because ferrous adds, the pH value of product is descended, adjust pH value so add Water Quenching Slag, make pH value 〉=4 of product.
In addition, the caking agent that uses in the agglomeration granulation process of the present invention can add by following prescription:
The phosphogypsum of selecting for use weight part to account for the 5%-35% of Repone K raw material weight in the agglomeration granulation process is advisable; Perhaps the semi-hydrated gypsum of selecting for use weight part to account for the 5%-20% of Repone K raw material weight in the agglomeration granulation process is advisable; Perhaps the wilkinite of selecting for use weight part to account for the 3%-10% of Repone K raw material weight in the agglomeration granulation process of white potassium is advisable; The wilkinite of selecting for use weight part to account for the 5%-20% of Repone K raw material weight in the agglomeration granulation process of red potassium is advisable.
The present invention has improved the granulating performance of material by the adding addition material, improved the intensity of wet particle, thereby make Repone K can adopt agglomeration granulation technology to carry out granulation, and consider cost and nutrient factor, the addition material that is adopted helps the crop growth needs and is the cheap useless byproduct of industry, so the present invention has following outstanding advantage:
1, this operational path is identical with traditional fertile agglomeration granulation technology of compound, need not any scrap build and can organize production, is convenient to industrial applications and promotes, and has possessed the various advantages that agglomeration granulation technology is simple, cost is low, uniform in quality is stable.2, owing to adopt agglomeration granulation technology, products obtained therefrom is real circular granular, is easily accepted by market, compares with sheet macrobead Repone K to have unrivaled competitive edge.3, addition material wide material sources and be the useless byproduct of industry, and its composition is still useful to farm crop, not only has environmental benefit, and low price, have cost advantage preferably.4, balling-up qualification rate height generally more than 70%, helps reducing cost, and improves output.5, the K of the potassium chloride particle of gained
2O content height generally can reach more than 45%.
Embodiment:
Below the white potassium selected for use of each embodiment be: homemade white potassium, K
2O 49.50%, H
2O 8.91% red potassium is: Russian red potassium, K
2O 61.07%, H
2O 0.89%.The process program that adopts is: at first with Repone K raw material and Water Quenching Slag in advance with fragmentation, then by a certain percentage the metering Repone K, caking agent and addition material are added in the mixing tank for coating colors, be delivered in granulation kiln or the granulation dish by belt, by normal process conditions water spray or lead to steam and carry out agglomeration granulation, enter dry kiln subsequently and carry out warm air drying, come out after overcooling from dry kiln, screening, qualified granulated fertilizer is finished product, the method that finished product is pressed GB15063-2001 regulation detects, and fertile broken back of the coarse grain on the sieve and granulation again after undersized material returns the granulation kiln jointly and fresh feed mixes as returning charge.
Table one:
| Numbering | Raw material Kg | Ferrous Kg | Qualified particle content (%) | Ultimate compression strength (N) | K 2O content (%) | H 2O content (%) | PH value | Water Quenching Slag add-on Kg |
| 1-1 | White potassium 100 | 0 | / | / | / | / | / | / |
| 1-2 | 3 | 48.3 | 14 | 46.6 | 2.5 | 5.0 | / | |
| 1-3 | 5 | 60.5 | 15 | 46.2 | 2.3 | 3.8 | 0.5 | |
| 1-4 | 10 | 69.1 | 15 | 45.0 | 2.3 | 3.0 | 2.0 | |
| 1-5 | 12 | 66.3 | 15 | 44.6 | 2.6 | 2.8 | 2.5 | |
| 1-6 | 15 | 62.4 | 16 | 44.1 | 2.5 | 2.6 | 3.0 | |
| 1-7 | 20 | 55.1 | 17 | 43.1 | 2.2 | 2.5 | 4.0 | |
| 1-8 | 25 | 52.2 | 16 | 42.4 | 2.7 | 2.4 | 5.0 | |
| 1-9 | 30 | 42.8 | 15 | 41.5 | 2.5 | 2.2 | 6.0 | |
| 1-10 | 35 | 32.1 | 14 | 40.7 | 2.3 | 2.1 | 7.0 | |
| 1-11 | Red potassium 100 | 0 | / | / | / | / | / | / |
| 1-12 | 3 | 33.1 | 13 | 47.5 | 2.4 | 5.6 | / | |
| 1-13 | 5 | 39.3 | 13 | 51.3 | 2.2 | 3.6 | 4.0 | |
| 1-14 | 10 | 52.2 | 15 | 50.1 | 2.4 | 3.3 | 5.0 | |
| 1-15 | 15 | 66.3 | 16 | 48.8 | 2.5 | 3.2 | 6.0 | |
| 1-16 | 20 | 75.1 | 16 | 47.6 | 2.3 | 2.8 | 7.0 | |
| 1-17 | 25 | 68.8 | 17 | 46.4 | 2.4 | 2.5 | 8.0 | |
| 1-18 | 30 | 55.2 | 16 | 45.3 | 2.5 | 2.3 | 9.0 | |
| 1-19 | 35 | 49.1 | 16 | 40.5 | 2.5 | 5.6 | / |
The caking agent that uses in the last table accounts for the phosphogypsum of Repone K raw material weight 15% as weight part, and ferrous is FeSO
47H
2O, when its addition can both make the Repone K granulating in scope in 3%-30%, wherein white potassium becomes graininess best in 5%-15%, the scope of red potassium at 15%-25%.The content of qualified particle also is the balling-up qualification rate in the table, refers generally to the degree that the particle of particle diameter between 1.5-4.0mm accounts for the material gross weight; K
2The content of O and water also is meant the K in the moulding particle
2The weight percent content of O and water; PH value is meant the moulding particle pH value that does not add Water Quenching Slag, and the Water Quenching Slag add-on is meant the weight of the minimum of the Water Quenching Slag that the pH value of moulding particle 〉=4 o'clock are added in mixing tank for coating colors.According to above-mentioned identical method and evaluation criteria, respectively phosphogypsum, wilkinite, semi-hydrated gypsum are pressed the prescription granulation admixed together of the used ferrous and Repone K of 1-4 and 1-16 and following each table:
Table two:
| Numbering | Basic components | Phosphogypsum Kg | Qualified particle content (%) | Ultimate compression strength (N) | K 2O content (%) | H 2O content (%) | PH value | Water Quenching Slag add-on Kg |
| 2-1 | 1-4 | 0 | 33.3 | 12 | 50.5 | 2.4 | 2.9 | 3.0 |
| 2-2 | 5 | 62.5 | 15 | 49.2 | 2.2 | 3.0 | 2.5 | |
| 2-3 | 10 | 65.2 | 15 | 47.6 | 2.3 | 3.2 | 2.0 | |
| 2-4 | 20 | 68.8 | 16 | 42.3 | 2.4 | 3.3 | 1.5 | |
| 2-5 | 30 | 62.3 | 16 | 39.4 | 2.6 | 3.5 | 1.0 | |
| 2-6 | 35 | 58.0 | 16 | 38.0 | 2.8 | 3.6 | 0.5 | |
| 2-7 | 40 | 49.1 | 15 | 36.8 | 2.4 | 3.6 | 0.5 | |
| 2-8 | 1-16 | 10 | 75.0 | 16 | 47.7 | 2.3 | 2.8 | 7.0 |
| 2-9 | 20 | 71.5 | 19 | 45.8 | 2.6 | 3.0 | 6.0 | |
| 2-10 | 25 | 66.2 | 19 | 44.3 | 2.7 | 3.1 | 5.0 | |
| 2-11 | 35 | 60.8 | 18 | 41.2 | 2.3 | 3.3 | 4.0 | |
| 2-12 | 40 | 56.3 | 18 | 40.1 | 2.7 | 3.4 | 4.0 |
Table three:
| Numbering | Basic components | Semi-hydrated gypsum Kg | Qualified particle content (%) | Ultimate compression strength (N) | K 2O content (%) | H 2O content (%) | PH value | Water Quenching Slag add-on Kg |
| 3-1 | 1-4 | 3 | 31.2 | 16 | 49.3 | 2.5 | 3.8 | 0.5 |
| 3-2 | 5 | 62.4 | 17 | 48.6 | 2.2 | 4.0 | / | |
| 3-3 | 8 | 70.5 | 21 | 47.8 | 2.4 | 4.2 | / | |
| 3-4 | 10 | 65.2 | 18 | 47.2 | 2.3 | 4.4 | / | |
| 3-5 | 15 | 60.3 | 19 | 46.6 | 2.6 | 4.7 | / | |
| 3-6 | 1-16 | 5 | 52.2 | 18 | 50.4 | 2.3 | 3.3 | 4.0 |
| 3-7 | 10 | 62.3 | 19 | 48.5 | 2.6 | 3.6 | 2.0 | |
| 3-8 | 15 | 69.0 | 22 | 46.6 | 2.5 | 3.8 | 1.0 | |
| 3-9 | 20 | 63.4 | 20 | 44.7 | 2.2 | 4.1 | / | |
| 3-10 | 25 | 40.1 | 17 | 43.5 | 2.3 | 4.3 | / |
Table four:
| Numbering | Basic components | Wilkinite Kg | Qualified particle content (%) | Ultimate compression strength (N) | K 2O content (%) | H 2O content (%) | PH value | Water Quenching Slag add-on Kg |
| 4-1 | 1-4 | 2 | 43.2 | 16 | 49.5 | 2.4 | 3.0 | 2.0 |
| 4-2 | 3 | 58.4 | 16 | 49.0 | 2.4 | 3.0 | 2.0 | |
| 4-3 | 6 | 66.1 | 15 | 48.4 | 2.5 | 3.0 | 2.0 | |
| 4-4 | 8 | 65.2 | 14 | 47.8 | 2.1 | 3.0 | 2.0 | |
| 4-5 | 10 | 57.2 | 12 | 47.2 | 2.3 | 3.0 | 2.0 | |
| 4-6 | 12 | 45.6 | 11 | 47.1 | 2.5 | 3.0 | 2.0 | |
| 4-7 | 1-17 | 3 | 44.7 | 16 | 50.1 | 2.3 | 2.9 | 8.0 |
| 4-8 | 5 | 53.9 | 15 | 51.0 | 2.5 | 2.8 | 8.0 | |
| 4-9 | 10 | 63.2 | 17 | 48.5 | 2.5 | 2.8 | 8.0 | |
| 4-10 | 15 | 57.3 | 16 | 46.8 | 2.3 | 2.9 | 8.0 | |
| 4-11 | 20 | 50.1 | 14 | 45.2 | 2.4 | 2.8 | 8.0 | |
| 4-12 | 25 | 40.8 | 12 | 43.8 | 2.4 | 2.8 | 8.0 |
Caking agents such as adding phosphogypsum, semi-hydrated gypsum, wilkinite can improve the granulating performance of Repone K preferably, but adding too much makes the viscosity increase of material be unfavorable for granulating on the contrary, and caking agent can make the product nutrient descend, so should be at the consumption that guarantees rationally to determine under the granulated situation caking agent.
Claims (7)
1, Repone K agglomeration granulation method, Repone K raw material, the agglomeration granulation that will be called white potassium or red potassium are mixed the laggard granulating equipment of going into to reunite with caking agent with addition material, agglomeration granulation technology is routinely carried out agglomeration granulation, gained particle drying, cooling, screening, get product, it is characterized in that: described addition material composition is a ferrous sulfate, and the weight part of its use accounts for the 3%-30% of Repone K raw material weight; Described caking agent is the phosphogypsum that weight part accounts for the 5%-35% of Repone K raw material weight, perhaps accounts for the semi-hydrated gypsum of the 5%-20% of Repone K raw material weight for weight part, perhaps accounts for the wilkinite of the 3%-20% of Repone K raw material weight for weight part.
2, Repone K agglomeration granulation method according to claim 1 is characterized in that: select for use weight part to account for the 5%-15% ferrous sulfate of Repone K raw material weight in the agglomeration granulation process of white potassium.
3, Repone K agglomeration granulation method according to claim 1 is characterized in that: select for use weight part to account for the 15%-25% ferrous sulfate of Repone K raw material weight in the agglomeration granulation process of red potassium.
4, Repone K agglomeration granulation method according to claim 1, it is characterized in that: ferrous sulfate is FeSO
47H
2O.
5, Repone K agglomeration granulation method according to claim 1 is characterized in that: can add Water Quenching Slag and adjust pH value, make pH value 〉=4 of product.
6, Repone K agglomeration granulation method according to claim 2 is characterized in that: select for use weight part to account for the wilkinite of the 3%-10% of Repone K raw material weight in the agglomeration granulation process of white potassium.
7, Repone K agglomeration granulation method according to claim 3 is characterized in that: select for use weight part to account for the wilkinite of the 5%-20% of Repone K raw material weight in the agglomeration granulation process of red potassium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112963 CN1218908C (en) | 2003-03-10 | 2003-03-10 | Potassium chloride united pelleting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112963 CN1218908C (en) | 2003-03-10 | 2003-03-10 | Potassium chloride united pelleting process |
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| Publication Number | Publication Date |
|---|---|
| CN1530349A CN1530349A (en) | 2004-09-22 |
| CN1218908C true CN1218908C (en) | 2005-09-14 |
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|---|---|---|---|
| CN 03112963 Expired - Fee Related CN1218908C (en) | 2003-03-10 | 2003-03-10 | Potassium chloride united pelleting process |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361941C (en) * | 2004-11-05 | 2008-01-16 | 上海化工研究院 | Granule potassium chloride production method |
| CN101792334B (en) * | 2010-02-10 | 2012-05-16 | 吉林市博达钾肥有限公司 | Spherical potassium chloride particle and preparation method thereof |
| CN102464509A (en) * | 2010-10-29 | 2012-05-23 | 山东农大肥业科技有限公司 | Preparation method of high-concentration round granular potash fertilizer |
| CN102503635A (en) * | 2011-10-27 | 2012-06-20 | 山西师范大学 | Production process for potassium nitrogen compound fertilizer |
| CN104341228A (en) * | 2013-07-31 | 2015-02-11 | 深圳市芭田生态工程股份有限公司 | A potassium chloride particle fertilizer and a preparing method thereof |
| 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 |
| CN108033862B (en) * | 2018-01-04 | 2021-04-13 | 中化农业（临沂）研发中心有限公司 | Preparation method of novel high-strength round granular potassium sulfate |
| CN107986887B (en) * | 2018-01-15 | 2021-02-26 | 中化农业（临沂）研发中心有限公司 | Round high-strength granular potassium chloride fertilizer and manufacturing method thereof |
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2003
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Assignee: Anhui Liuguo Chemical Industry Co., Ltd. Assignor: Tongling Chemical Industry Group Co., ltd. Contract record no.: 2011340000239 Denomination of invention: Potassium chloride united pelleting process Granted publication date: 20050914 License type: Exclusive License Open date: 20040922 Record date: 20110803 |
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Granted publication date: 20050914 Termination date: 20140310 |