CN103172409A - Process for preparing non-soluble potassium fertilizer by using potassium-bearing minerals - Google Patents
Process for preparing non-soluble potassium fertilizer by using potassium-bearing minerals Download PDFInfo
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- CN103172409A CN103172409A CN2011104363439A CN201110436343A CN103172409A CN 103172409 A CN103172409 A CN 103172409A CN 2011104363439 A CN2011104363439 A CN 2011104363439A CN 201110436343 A CN201110436343 A CN 201110436343A CN 103172409 A CN103172409 A CN 103172409A
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Abstract
The invention discloses a process for preparing non-soluble potassium fertilizer by using potassium-bearing minerals, and belongs to the technical field of fertilizer preparation. According to the process, natural potassium-bearing minerals containing 6-15 percent of K2O are used as the raw materials; potassium element in the potassium-bearing minerals is activated by using a mechanical activation method so that the potassium element has the efficacy of a common chemical fertilizer; the potassium fertilizer is a non-soluble potassium fertilizer and not easily lost with rainwater, and can be used for reducing the soil viscosity, enhancing the soil looseness and reducing the unique characteristics of soil hardening; the preparation process is simple, is easy in operation, and has the advantages of good effect, less investment, no pollution and the like; by utilizing the process, the utilization rate of potassium-bearing minerals reaches 100 percent, and no tailings are discharged; and the process opens up a new technical approach for potassium fertilizer industrial production.
Description
Technical field
The invention belongs to the fertilizer preparing technical field, relate to a kind of processing method of utilizing potassium-bearing mineral to prepare non-dissolubility potash fertilizer, particularly utilize natural potassium-bearing mineral to prepare the fertiliser production new process of non-dissolubility potash fertilizer under the Physical Processing condition.
Background technology
Potash fertilizer is one of a large amount of three large chemical fertilizer that use in agricultural, and plant production is essential.The potash fertilizer kind is fewer, and approximately 95% is Repone K, and sulfate type potash fertilizer accounts for 5%, also has nitric acid, carbonic acid and the phosphoric acid salt potash fertilizer of minute quantity.World's soluble potassium aboundresources, nearly 20,000,000,000 t of proven reserve, USSR (Union of Soviet Socialist Republics) and Canadian reserves account for more than 90% of world's total reserves, China's soluble solids potassium resource extremely lacks, only have at present Yunnan Jiang Chengxian Meng Yejing and two places, Dawenkou, Tai'an, Shandong Province, and reserves are few, grade is low, have inconvenient traffic.
Due to the restriction of soluble potassium resources supplIes, China's potash fertilizer industry slower development, potash fertilizer output far can not satisfy the industrial and agricultural production needs, need spend every year a large amount of foreign exchanges from external import potash fertilizer.The ways of addressing this issue of advocating at present has two: the one, abroad develop Potash Resources cooperatively, such as Thailand, Laos, Russia etc.; The 2nd, exploitation non-solubility potassium resource, as potassium felspar sand, alunite, glaukonine, illite, nepheline and contain potassium sandstone, shale, slate, muddy limestone etc., these potassium-bearing mineral aboundresources, widely distributed.
Utilize the processing method of Potassic Fertilizer Production from Potash Feldspar to integrate and to be divided into: sintering process, high-temperature melting method, hydrothermal method, blast-furnace smelting method and low-temperature decomposition method.With alum potash fertilizer made of stones, two kinds of methods are arranged: (1) reduction heat solution; (2) solvay soda process.Technical process with nepheline syenite potash fertilizer processed is: will grind into slip after the ore deposit fragmentations such as nepheline syenite together with soda, dissolve with dilute alkaline soln after high-temperature roasting, make its solid-liquid separation, the solution concerned process steps is processed the products such as output vitriolate of tartar, Repone K and salt of wormwood.The processing method of Erie's potash fertilizer made of stones is: select the illite fine ore, through roasting, vitriol lixiviation, washing, separation, the filtrate crystallisation by cooling obtains arcanite stone, with ammoniacal liquor to its alkalinisation treatment, leaching liquid is removed filter cake after filtration, and mother liquor namely gets potassium-nitrogen fertilizer after concentration and evaporation.Potash fertilizer processing method processed is take potassium rich rock as raw material: be broken to 120 orders and allocate sodium carbonate into, roasting gets grog, but Hydrothermal Synthesis 13X zeolite molecular sieve under alkaline condition, mother liquor namely gets the products such as salt of wormwood through processing such as acidizing neutralization, filtration, separation, drying, roastings.(Yu Chien, insoluble potassium resource potash fertilizer present Research processed, chemical industry mineral and processing, 2002, (8): 1-3).
The above processing method is all produces water miscible potassium oxide, vitriolate of tartar, salt of wormwood etc., and this patent uses the standby insoluble potash fertilizer of potassium-bearing mineral mechanical activation legal system.Insoluble potash fertilizer is difficult for outflowing with water, and is a kind of slow release fertilizer, and is difficult for causing soil compaction, the ground Its Adjacent Waters that applies fertilizer is not caused eutrophication.
The present invention is different from the method that the steps such as employing potassium felspar sand, Industrial Salt, caustic soda, hydrochloric acid, the bunker coal mentioned in " with the processing method of producing potassium fertilizer from potash feldspar " (92106873.5) patent pass through and pulverize, mix, calcining, leaching prepare required Agricultural Potassium.
The present invention be different from mention in " method of producing compound fertilizer by wet decomposing potassium feldspar " (200910015820.7) patent potassium felspar sand is decomposed products such as obtaining the ammonium-potassium sulfate mother liquor under normal Temperature-pressure Conditions, then prepare the method for chemical fertilizer take the ammonium-potassium sulfate mother liquor as raw material.
The present invention be different from mention in the patent of " long-acting granular potash fertilizer " (98118245.3) by the constitutive materials such as potassium felspar sand, Wingdale, clay pit, the method for the granulated fertilizer through pulverizing, mix, heat, make diameter 3mm.
The present invention is different from and prepares the method for potash fertilizer after the potassium bearing rock fine ore of mentioning in " a kind of method of producing potash fertilizer with potassium bearing rock " (96120733.7) patent mixes with soda ash or caustic soda after 500 ℃ of-850 ℃ of lower roastings.
The present invention be different from mention in " a kind of method of extracting active potassium in potassium felspar sand under normal pressure " (200710025493.4) patent displace potassium felspar sand with inorganic salt in the High hydrophilous resin network system of dilute acid soln and swelling in potassium prepare the method for potash fertilizer.
The present invention is different from adding with illite of mentioning in " method of producing potassium-nitrogen fertilizer with illite " (92105286.3) patent, and sulfuric acid separates after the reaction kettle for reaction of High Temperature High Pressure, potassium-nitrogen fertilizer is produced in the inspissation crystallization.
The present invention is different from the sea green stone ore of use mentioned in " production method of glaukonine potash fertilizer " (98111944) patent through sorting, fragmentation, high-temperature roasting activation, cooling, the processing method of fine grinding potash fertilizer processed again.
The present invention is different from mixing rear roasting, mix into colloidal with caustic soda with water with soda ash or caustic soda with K-feldspar of mentioning in " a kind of method of producing potash fertilizer with potassium bearing rock " (96120733.7) patent, separate by standing, aging, crystallization, filtration, acidizing neutralization, extraction, obtain K
2CO
3The processing method of potash fertilizer.
Utilize State Intellectual Property Office's patent search system, retrieved all patents that potassium-bearing mineral prepares potash fertilizer, result shows: all patents of retrieving all are not quite similar with this patent.Do not find that in the English patent search system that World Intellectual Property Organization provides potassium-bearing mineral prepares the Patents of potash fertilizer yet.
Summary of the invention
The invention provides a kind of new preparation process method of non-dissolubility potash fertilizer, the present invention is take natural potassium-bearing mineral as raw material, and the preparation method compares with traditional chemical method potash fertilizer, and the characteristics of maximum of the present invention are exactly the standby non-dissolubility potash fertilizer of mechanical activation legal system.This patent is under the prerequisite of adding activator, and after potassium-bearing mineral was ground to certain fineness, activation potassium element wherein can be absorbed by plants it.
A kind of processing method of utilizing potassium-bearing mineral to prepare non-dissolubility potash fertilizer, its concrete steps are as follows:
(1) with pulverizer, potassium-bearing mineral is crushed to granularity less than 5cm;
(2) step (1) gained material is sent into disintegrating apparatus, being crushed to mean particle size 200 orders (is particle diameter d
97＜75 μ m) more than;
(3) step (2) gained material is fed extra-fine grinding equipment, add simultaneously activator, carry out micritization processing, activation potassium element wherein; It (is particle diameter d that the control milling time makes the product mean particle size after micritization processing reach 400 orders
97＜38 μ m) more than, obtain non-dissolubility potash fertilizer;
Described extra-fine grinding equipment is double-cylinder ball mill, is any one in application number 200510011557.6,200520022911.0,200520022912.5,200420004537.7 or 200410004505.1 the described ball mill of patent.
The described pulverizer of step (1) is that Universalpulverizer, beater grinder or other have the disintegrating apparatus of similar functions.
The described disintegrating apparatus of step (2) is that Raymond mill, eddy current grind or other have the disintegrating apparatus of similar functions.
Potassium oxide (K in described potassium-bearing mineral
2O) content is between 6-15%.
Described activator can be ammonium phosphate, ethyl lactate or polyacrylate.The consumption of activator and the quality of mineral than the boundary between 5: 19 to 3: 7.
Beneficial effect of the present invention is: the present invention adopts the mechanical activation method that the potassium element in potassium-bearing mineral is activated, make it have the effect of general chemistry fertilizer, this chemical fertilizer is water-insoluble potash fertilizer, be difficult for running off with rainwater, can reduce consistency of soil, strengthen its free-running property, reduce soil compaction, the ground Its Adjacent Waters that applies fertilizer is not caused eutrophication.And preparation technology's flow process is simple, processing ease, effective, less investment, pollution-free etc.This processing method makes the utilization ratio of potassium-bearing mineral reach 100%, discharges without mine tailing.The present invention is that a new technological approaches has been opened up in potash fertilizer industry production.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment 1
A kind of processing method of utilizing potassium-bearing mineral to prepare non-dissolubility potash fertilizer, as Fig. 1, its concrete steps are as follows:
(1) select beater grinder that potassium-bearing mineral is crushed to granularity less than 5cm;
(2) step (1) gained material is sent into Raymond mill, be crushed to mean particle size 200 orders;
(3) (this ball mill number of patent application: 200520022911.0), add simultaneously ammonium phosphate, the mass ratio of ammonium phosphate and material is 3: 7, carries out micritization processing, activation potassium element wherein step (2) gained material to be fed double-cylinder ball mill; It is 500 orders that the control milling time makes the product mean particle size after micritization processing, obtains non-dissolubility potash fertilizer;
(4) step (3) products obtained therefrom is packaged spare.
Potassium oxide (K in described potassium-bearing mineral
2O) content is 10.5%.
Embodiment 2
A kind of processing method of utilizing potassium-bearing mineral to prepare non-dissolubility potash fertilizer, its concrete steps are as follows:
(1) select Universalpulverizer that potassium-bearing mineral is crushed to granularity less than 5cm;
(2) step (1) gained material is sent into the eddy current mill, be crushed to mean particle size 230 orders;
(3) step (2) gained material is fed double-cylinder ball mill (this ball mill number of patent application: 200520022912.5), add simultaneously ethyl lactate, the mass ratio of ethyl lactate and material is 5: 19, carries out micritization processing, activation potassium element wherein; Control milling time and make the product mean particle size after micritization is processed reach 450 orders, obtain non-dissolubility potash fertilizer;
(4) step (3) products obtained therefrom is packaged spare.
Potassium oxide (K in described potassium-bearing mineral
2O) content is 9.8%.
Claims (7)
1. processing method of utilizing potassium-bearing mineral to prepare non-dissolubility potash fertilizer, it is characterized in that: the method step is as follows:
(1) with pulverizer, potassium-bearing mineral is crushed to granularity less than 5cm;
(2) step (1) gained material is sent into disintegrating apparatus, more than being crushed to median size 200 orders;
(3) step (2) gained material is fed extra-fine grinding equipment, add simultaneously activator, carry out micritization processing, control milling time and make more than product mean particle size after micritization processing reaches 400 orders, obtain non-dissolubility potash fertilizer.
2. method according to claim 1, it is characterized in that: the described pulverizer of step (1) is Universalpulverizer or beater grinder.
3. method according to claim 1 is characterized in that: the described disintegrating apparatus of step (2) is Raymond mill or eddy current mill.
4. method according to claim 1, it is characterized in that: described extra-fine grinding equipment is double-cylinder ball mill.
5. method according to claim 1, it is characterized in that: in described potassium-bearing mineral, potassium oxide content is between 6-15%.
6. method according to claim 1, it is characterized in that: described activator is ammonium phosphate, ethyl lactate or polyacrylate.
7. method according to claim 6 is characterized in that: the quality of described activator and mineral than the boundary between 5: 19 to 3: 7.
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| CN201110436343.9A CN103172409B (en) | 2011-12-22 | 2011-12-22 | Process for preparing non-soluble potassium fertilizer by using potassium-bearing minerals |
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| CN201110436343.9A CN103172409B (en) | 2011-12-22 | 2011-12-22 | Process for preparing non-soluble potassium fertilizer by using potassium-bearing minerals |
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| CN103172409B CN103172409B (en) | 2014-07-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417308A (en) * | 2017-07-26 | 2017-12-01 | 山东晶石新材料有限公司 | It is a kind of to utilize the natural potassium method made of stones for making potassium powder |
| CN109020629A (en) * | 2018-09-05 | 2018-12-18 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A kind of technique using asbestos tailings production Si, Ca, Mg, K fertilizer |
| CN109485469A (en) * | 2018-12-10 | 2019-03-19 | 淄博清大粉体材料工程有限公司 | A kind of preparation method for the eutrophy organic fertilizer adding phosphorus potassium breeze |
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| CN1231272A (en) * | 1998-04-06 | 1999-10-13 | 秦明贵 | Glauconite potash fertilizer and productive process thereof |
| CN1569766A (en) * | 2004-05-06 | 2005-01-26 | 李善宽 | Process for preparing biological phosphate fertilizer and potash fertilizer |
| CN101134680A (en) * | 2007-07-31 | 2008-03-05 | 合肥工业大学 | Method for extracting active potassium from potash feldspar under normal pressure |
| CN101343198A (en) * | 2007-07-09 | 2009-01-14 | 襄樊隆福矿业有限公司 | Complex fertilizer prepared with industry tail slag special for tobacco leaf and preparation method thereof |
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2011
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Patent Citations (4)
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| CN1231272A (en) * | 1998-04-06 | 1999-10-13 | 秦明贵 | Glauconite potash fertilizer and productive process thereof |
| CN1569766A (en) * | 2004-05-06 | 2005-01-26 | 李善宽 | Process for preparing biological phosphate fertilizer and potash fertilizer |
| CN101343198A (en) * | 2007-07-09 | 2009-01-14 | 襄樊隆福矿业有限公司 | Complex fertilizer prepared with industry tail slag special for tobacco leaf and preparation method thereof |
| CN101134680A (en) * | 2007-07-31 | 2008-03-05 | 合肥工业大学 | Method for extracting active potassium from potash feldspar under normal pressure |
Non-Patent Citations (2)
| Title |
|---|
| R.A. KLEIV等: "Production of mechanically activated rock flour fertilizer by high intensive ultrafine grinding", 《MINERALS ENGINEERING》 * |
| 王俊等: "不同理化处理对钾长石的促释效果研究", 《2010中国腐植酸行业低碳经济交流大会暨第九届全国绿色环保肥料（农药）新技术、新产品交流会论文集2010中国腐植酸行业低碳经济交流大会暨第九届全国绿色环保肥料（农药）新技术、新产品交流会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417308A (en) * | 2017-07-26 | 2017-12-01 | 山东晶石新材料有限公司 | It is a kind of to utilize the natural potassium method made of stones for making potassium powder |
| CN109020629A (en) * | 2018-09-05 | 2018-12-18 | 若羌县圣地石棉尾料再利用科技开发有限公司 | A kind of technique using asbestos tailings production Si, Ca, Mg, K fertilizer |
| CN109020629B (en) * | 2018-09-05 | 2021-04-30 | 北京璞域环保科技有限公司 | Process for producing silicon-calcium-magnesium-potassium fertilizer by using asbestos tailings |
| CN109485469A (en) * | 2018-12-10 | 2019-03-19 | 淄博清大粉体材料工程有限公司 | A kind of preparation method for the eutrophy organic fertilizer adding phosphorus potassium breeze |
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| CN103172409B (en) | 2014-07-23 |
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