CN1456538A - Potassic-magnesian fertilizer and preparing method thereof - Google Patents
Potassic-magnesian fertilizer and preparing method thereof Download PDFInfo
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- CN1456538A CN1456538A CN 03133596 CN03133596A CN1456538A CN 1456538 A CN1456538 A CN 1456538A CN 03133596 CN03133596 CN 03133596 CN 03133596 A CN03133596 A CN 03133596A CN 1456538 A CN1456538 A CN 1456538A
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Abstract
A K-Mg fertilizer is prepared from potash feldspar, dolomite, coal and catalyst through proportional mixing, pulverizing, sieving by 80 meshes, homogenizing, calcining at 1250-1280 deg.C for 35-40 min, quenching in water or air, and ball grinding. Its advantages are high K content and no environmental pollution.
Description
Technical field: the present invention relates to a kind of fertilizer, especially a kind of potassic-magnesian fertilizer and preparation method thereof.
Background technology: at present, potash fertilizer industry is that resource grows up with water-soluble sylvite, and the potash fertilizer of producing also is water miscible chemical potash fertilizer, as Repone K, vitriolate of tartar, saltpetre, salt of wormwood etc.China lack this classification former world potash fertilizer industry production of water-soluble sylvite general water-soluble potassium resource, be again large agricultural country, potash fertilizer consumption big country has caused present potash fertilizer mainly to rely on the situation of import.If can utilize the abundant water-insoluble potassium resource of domestic reserves (the common name potassium bearing rock is as potassium felspar sand, green bean rock etc.) exploitation potash fertilizer, will be the new way of opening up for potash fertilizer production at China's potassium resource.For this reason, China just develops and utilizes water-insoluble potassium bearing rock to produce agricultural potash fertilizer since nineteen fifties, to the nineties even formed potash fertilizer exploitation heat, geology, chemical industry, industries such as agricultural, universities and colleges, each family such as R﹠D institution carries out the work, country also encourages the potash fertilizer development research, developed the method for multiple production potash fertilizer, the method of utilizing water-insoluble potassium bearing rock to develop agricultural potash fertilizer has three classes substantially: direct method, volatilization method, comprehensive use, potash-lime fertilizer in the direct method is representative with the Guizhou University, the transformation efficiency 87% of potassium, average 75% in the production, effective potassium 5%; Fused(calcium magnesium phosphorus)potash fertilizer mainly is in existing phosphate fertilizer plant, there is the potassium felspar sand resource locality, effectively potassium is more than 1%, in the potash-lime fertilizer of direct method, the transformation efficiency of potassium is on the low side (transformation efficiency of potassium is exactly the ratio of effective potassium and full potassium content), blast furnace process calcium magnesium phosphorus potassium is based on phosphorus after all, and the Ministry of Chemical Industry's industry standard is stipulated effective potassium 〉=1%, and potassium content is low too; Volatilization method is based on cement mill, Wenxi County, Shanxi, promotes not quite, and major cause is that the output of kiln ash potash fertilizer is too low, and a kiloton cement could be produced tens tons of potash fertilizer; The content less stable of potassium in the kiln ash potash fertilizer, the alkalescence of kiln ash potash fertilizer is too strong, and fertilizer is joined in inconvenience when using.Research unit is maximum as for comprehensive use, drops into also maximum, as drops into the Sichuan green bean rock exploitation of more than one hundred million nothings; passed through the pilot scale evaluation in 1994, Shanghai Chemical Engineering Design Inst., Changsha mining design institute of the Ministry of Chemical Industry, China University of Geosciences etc. also all dropped into huge fund, but because of the rock of potassium bearing rock be aluminosilicate; crystalline structure is stable; the strong lattice of crystalline can be high, and Chemical Composition is complicated again, comprehensive utilization energy consumption height; complex process; long flow path, invest huge, single with regard to potash fertilizer economic benefit relatively poor.
Summary of the invention: in order to solve the problem of above-mentioned existence, the present invention utilizes the water-insoluble potassium resource of China's abundant that a kind of potassium content height, nuisanceless, simple potassic-magnesian fertilizer of production technique and preparation method thereof are provided.
Concrete technical scheme is as follows: a kind of potassic-magnesian fertilizer is characterized in that: it is to be made by following raw material, is by weight percentage: potassium felspar sand 65-70% rhombspar 27-32% catalyzer 1.5-3%.
Its preparation method is: allocate above-mentioned raw material in proportion into, the coal 115-120 kilogram of allocating into per ton, above-mentioned raw material fineness 〉=96% is by 80 mesh sieves, homogenizing arranged twice after going into raw material silo, goes into the kiln calcining, 1250-1280 ℃ of kiln temperature, kept 35-40 minute, grog remains on below 100 ℃ through shrend or air-cooled quenching, grog ball milling fineness 〉=80% is by 80 mesh sieves, and packing gets final product.
Potassic-magnesian fertilizer adopts the crystalline structure conversion method, rhombspar etc. provides and the potassium felspar sand reaction generates Calucium Silicate powder by adding, Magnesium Silicate q-agent, potassium also is present in the fertilizer with the potassium silicate form, potassium felspar sand is a crystal, highly stable fixed sturcture is arranged, potassium element is fixed and can not dissociates out in the crystalline lattice, also just can not be utilized by plant absorbing, therefore be invalid potassium, but occurring in nature also has non-crystal material, this class material instability, water insoluble, but can be dissolved in weak acid, can be dissolved in weak acid in agriculture production just might be by plant absorbing, this class fertilizer that can be dissolved in 2% citric acid in the middle of the fertilizer is called solubility in citric acid fertilizer, composition wherein is an effective ingredient, can be utilized by plant absorbing, so, utilizing differs in the water-insoluble potassium felspar sand production potash fertilizer establishes a capital is to produce water-soluble potassium to be only the only way, produce still water insoluble, but can be dissolved in weak acid, being dissolved in the faintly acid limit can be dissolved in 2% citric acid and also can be used as potash fertilizer, facts have proved: water insoluble but be dissolved in faintly acid solubility in citric acid fertilizer, turnover rate is low, fertilizer efficiency is long, the needs that more meet agriculture production, during producing, potassic-magnesian fertilizer purifies owing to no longer separating, produce multiple potassium, silicon, plumbous series product, not only energy consumption is low, technology is easy operates, be easy to realize industrialization, and the element in the potassic-magnesian fertilizer is exactly all elements in potassium felspar sand and the rhombspar in the raw material, therefore be again the total body of various nutrient elements, can bring into play the comprehensive action of various nutrient elements, guarantee that on material choice contained harmful elements such as heavy metal do not exceed standard in potassium felspar sand and the rhombspar, in nuisanceless indication range, produce non-harmful potassic-magnesian fertilizer, from potassium bearing rock, make invalid potassium become the ratio (common name transformation efficiency) of effective potassium, being up to more than 95% of potassic-magnesian fertilizer, just the potassic-magnesian fertilizer production technology can make the potassium more than 95% in the potassium bearing rock transform into effective potassium in the potassic-magnesian fertilizer, effective potassium content is more than 8% in the potassic-magnesian fertilizer, the conversion method that the preparation method of potassic-magnesian fertilizer adopts, do not add any Chemicals, thereby the present invention is non-harmful.
Embodiment is as follows:
Embodiment 1: a kind of potassic-magnesian fertilizer is characterized in that: it is to be made by following raw material, is by weight percentage: potassium felspar sand 68% rhombspar 30% szaibelyite 2%.
Its preparation method is: allocate above-mentioned raw material in proportion into, the coal 115-120 kilogram of allocating into per ton, above-mentioned raw material fineness 〉=96% is by 80 mesh sieves, homogenizing arranged twice after going into raw material silo, goes into the kiln calcining, 1250-1280 ℃ of kiln temperature, kept 35-40 minute, grog remains on below 100 ℃ through shrend or air-cooled quenching, grog ball milling fineness 〉=80% is by 80 mesh sieves, and packing gets final product.
Wherein: potassium felspar sand: K
2O 〉=13% Na
2O≤3.0%
Rhombspar: CaO 〉=30% MgO 〉=20%
Coal: thermal value 〉=5800 kilojoule per kilogram fugitive constituent≤10%
Embodiment 2: a kind of potassic-magnesian fertilizer is characterized in that: it is to be made by following raw material, is by weight percentage: potassium felspar sand 70% rhombspar 28.5% szaibelyite 1.5%.
Its preparation method is: allocate above-mentioned raw material in proportion into, the coal 115-120 kilogram of allocating into per ton, above-mentioned raw material fineness 〉=96% is by 80 mesh sieves, homogenizing arranged twice after going into raw material silo, goes into the kiln calcining, 1250-1280 ℃ of kiln temperature, kept 35-40 minute, grog remains on below 100 ℃ through shrend or air-cooled quenching, grog ball milling fineness 〉=80% is by 80 mesh sieves, and packing gets final product.
Wherein: potassium felspar sand: K
2O 〉=13% Na
2O≤3.0%
Rhombspar: CaO 〉=30% MgO 〉=20%
Coal: thermal value 〉=5800 kilojoule per kilogram fugitive constituent≤10%
Embodiment 3: a kind of potassic-magnesian fertilizer is characterized in that: it is to be made by following raw material, is by weight percentage: potassium felspar sand 67% rhombspar 30% szaibelyite 3%.
Its preparation method is: allocate above-mentioned raw material in proportion into, the coal 115-120 kilogram of allocating into per ton, above-mentioned raw material fineness 〉=96% is by 80 mesh sieves, homogenizing arranged twice after going into raw material silo, goes into the kiln calcining, 1250-1280 ℃ of kiln temperature, kept 35-40 minute, grog remains on below 100 ℃ through shrend or air-cooled quenching, grog ball milling fineness 〉=80% is by 80 mesh sieves, and packing gets final product.
Wherein: potassium felspar sand: K
2O 〉=13% Na
2O≤3.0%
Rhombspar: CaO 〉=30% MgO 〉=20%
Coal: thermal value 〉=5800 kilojoule per kilogram fugitive constituent≤10%
Claims (3)
1, a kind of potassic-magnesian fertilizer is characterized in that: it is to be made by following raw material, is by weight percentage: potassium felspar sand 65-70% rhombspar 27-32% catalyzer 1.5-3%.
2, the preparation method of the described a kind of potassic-magnesian fertilizer of claim 1 is: allocate above-mentioned raw material in proportion into, the coal 115-120 kilogram of allocating into per ton, above-mentioned raw material fineness 〉=96% is by 80 mesh sieves, homogenizing arranged twice after going into raw material silo, goes into the kiln calcining, 1250-1280 ℃ of kiln temperature, kept 35-40 minute, grog remains on below 100 ℃ through shrend or air-cooled quenching, grog ball milling fineness 〉=80% is by 80 mesh sieves, and packing gets final product.
3, a kind of potassic-magnesian fertilizer according to claim 1 is characterized in that: described catalyzer is a szaibelyite.
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| CN 03133596 CN1216012C (en) | 2003-06-06 | 2003-06-06 | Potassic-magnesian fertilizer and preparing method thereof |
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| CN 03133596 CN1216012C (en) | 2003-06-06 | 2003-06-06 | Potassic-magnesian fertilizer and preparing method thereof |
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| CN1216012C CN1216012C (en) | 2005-08-24 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323056C (en) * | 2004-04-30 | 2007-06-27 | 河南省科学院地理研究所 | Process for producing amorphous silicon-kalium fertilizer |
| CN100389096C (en) * | 2005-11-28 | 2008-05-21 | 四川大学 | Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar |
| CN101054322B (en) * | 2006-04-14 | 2011-08-31 | 陈永年 | Natural Multi-element mineral fertilizer |
| CN101550035B (en) * | 2009-05-07 | 2011-09-21 | 山西世纪亚科丰肥业有限公司 | High-activity Si, Ca, Mg, K fertilizer |
| CN101054313B (en) * | 2007-04-26 | 2012-01-18 | 中科建成矿物技术(北京)有限公司 | Method for producing micro-pore silicon-potassium-calcium mineral fertilizer |
| CN103880504A (en) * | 2014-03-07 | 2014-06-25 | 佛山市健地农业科技有限公司 | Silicon-based compound fertilizer and preparation method thereof |
| CN104973904A (en) * | 2014-04-11 | 2015-10-14 | 王忠厚 | Water-soluble Si/Ca/K mineral element ecological organic fertilizer and preparation method |
| CN110988270A (en) * | 2019-12-24 | 2020-04-10 | 南通中智检测服务有限公司 | Method for measuring content of quick-acting metal in solid water-insoluble fertilizer |
-
2003
- 2003-06-06 CN CN 03133596 patent/CN1216012C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323056C (en) * | 2004-04-30 | 2007-06-27 | 河南省科学院地理研究所 | Process for producing amorphous silicon-kalium fertilizer |
| CN100389096C (en) * | 2005-11-28 | 2008-05-21 | 四川大学 | Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar |
| CN101054322B (en) * | 2006-04-14 | 2011-08-31 | 陈永年 | Natural Multi-element mineral fertilizer |
| CN101054313B (en) * | 2007-04-26 | 2012-01-18 | 中科建成矿物技术(北京)有限公司 | Method for producing micro-pore silicon-potassium-calcium mineral fertilizer |
| CN101550035B (en) * | 2009-05-07 | 2011-09-21 | 山西世纪亚科丰肥业有限公司 | High-activity Si, Ca, Mg, K fertilizer |
| CN103880504A (en) * | 2014-03-07 | 2014-06-25 | 佛山市健地农业科技有限公司 | Silicon-based compound fertilizer and preparation method thereof |
| CN104973904A (en) * | 2014-04-11 | 2015-10-14 | 王忠厚 | Water-soluble Si/Ca/K mineral element ecological organic fertilizer and preparation method |
| CN110988270A (en) * | 2019-12-24 | 2020-04-10 | 南通中智检测服务有限公司 | Method for measuring content of quick-acting metal in solid water-insoluble fertilizer |
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| CN1216012C (en) | 2005-08-24 |
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Granted publication date: 20050824 Termination date: 20100606 |