CN101982412B - Process for extracting KCl coarse grains by carrying out flotation on solid sylvinite primary ores - Google Patents
Process for extracting KCl coarse grains by carrying out flotation on solid sylvinite primary ores Download PDFInfo
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- CN101982412B CN101982412B CN 201010536078 CN201010536078A CN101982412B CN 101982412 B CN101982412 B CN 101982412B CN 201010536078 CN201010536078 CN 201010536078 CN 201010536078 A CN201010536078 A CN 201010536078A CN 101982412 B CN101982412 B CN 101982412B
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- flotation
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Abstract
The invention discloses a process for extracting KCl coarse grains by carrying out flotation on solid sylvinite primary ores, comprising the following steps; (1) crushing the solid sylvinite primary ores; (2) carrying out coarse grinding on the crushed sylvinite; (3) feeding the sylvinite material subject to coarse grinding into a flotation machine for primary rougher flotation and secondary refined flotation; and (4) filtering and drying concentrates obtained by the secondary refined flotation, thus obtaining the high-quality KCl bulky grain product. The product is purely white and transparent; the average grain size is 1mm-2mm; and the KCl grade is not less than 90% (by weight), thus exceeding the common industrial and agricultural high-class KCl product standards of class-II and class-III and reaching the special industrial KCl standard of national standard GB6549-1996I.
Description
Technical field
The present invention relates to utilize the sylvite resource to produce the technology of KCl potash fertilizer, particularly relate to the technology of utilizing the flotation of solid sylvite primary ore to extract coarse grain KCl potash fertilizer.
Background technology
At present; The production of China KCl is shone bittern through the salt lakeshore mostly and is made carnallitite, and carnallitite decomposes again-and flotation makes, but this because the potassium mixed salt grain size number that the solarization of beach, salt pan itself obtains is just thinner; And experienced the process that carnallitite decomposes again; Be equivalent to particle dissolving recrystallize, the KCl particle that therefore obtains is very thin, is Powdered basically.Yet, in agriculture potash fertilizer market, more be coarse grain potash fertilizer sale effect better; Reason is that Powdered potash fertilizer (like fertilising of rice terrace) in the fertilising process is blown to four winds easily; Fertilizer efficiency is lost, and therefore, potash fertilizer big producing countries such as Russia, Canada all stress to produce coarse grain potash fertilizer.At present some salt lake potash fertilizer manufacturing enterprises of China utilize a kind of mold equipment that potassium fertilizer particle is grown up, even but there is big gap in its particle diameter 0.2mm only like this with the macrobead potash fertilizer of external 1mm, 2mm even 3mm particle diameter.Abroad, producing coarse particles potash fertilizer has three kinds of technologies: the one, and the powdery potash fertilizer of producing with the salt lake is the roll-type extrusion process that raw material carries out secondary processing, promptly utilizes the tablets press in the potash fertilizer production unit to carry out granulation; Make Powdered potash fertilizer become particulate state potash fertilizer; The shortcoming of this technology is that the potash fertilizer products particle of producing is shaky, and granularity is less, and the technological process of production is long; Energy consumption is high, and cost is big; The 2nd, dissolving crystallized technology, after promptly sylvite being dissolved again again the crystalline method potassium fertilizer particle is grown up, the shortcoming of this method is that facility investment is big, energy consumption is high, deficiency in economic performance; The 3rd, utilize underground high-quality solid sylvite to carry out fragmentation or coarse particles potash fertilizer is produced in the coarse grain flotation; The coarse grain flotation is adopted stearylamine and is carried out flotation as the petroleum by-product of supplementary catching agent; Need to add urea formadehyde before the flotation KCl and suppress sludge, the advantage of this method is that production cost is low, and potassium fertilizer particle is big; But shortcoming is a urea formadehyde contains formaldehyde, and environmental pollution is bigger.Therefore, the solid sylvite mineral reserve that the grain size number of utilization own is thicker adopt few flotation reagent and the floatation process of environmental pollution directly to extract coarse grain KCl, are the new directions of present potash fertilizer production technique.
Summary of the invention
The object of the present invention is to provide that a kind of technology is simple, good product quality, the yield solid sylvite ore deposit flotation that utilizes high, good in economic efficiency, non-environmental-pollution directly extract the technology of coarse grain KCl.
The objective of the invention is to realize that through following technical scheme it comprises the following steps:
(1) solid sylvite primary ore is carried out fragmentation;
(2) material that step (1) is obtained carries out the coarse grain ore grinding, and the ore grain size behind the ore grinding accounts for 50%～90% (quality) for-2mm content, wherein-and 1mm content≤30% (quality);
(3) material that step (2) is obtained is sent into flotation machine, adds the sludge suppressor factor when roughly selecting earlier, adds collecting agent kiber alkyl amine and ether amine flotation coarse grain KCl again, and flotation medium is the K in said sylvite ore deposit
+, Na
+, Mg
2+, Cl
-Full altogether mother liquor, flotation process are that twice of one roughing is selected, add the sludge suppressor factor during primary cleaning once more; Flotation time is roughly selected 2～5 minutes, primary cleaning 1～4 minute, recleaning 1～3 minute; The flotation reagent consumption: the sludge suppressor factor adds at twice, wherein roughly selects to 30g/t～120g/t raw ore, primary cleaning are 15g/t～60g/t raw ore, and the collecting agent kiber alkyl amine is 50g/t～300g/t raw ore, and collecting agent ether amine is 40g/t～200g/t raw ore; Dosing method is the normal temperature dosing, and collecting agent kiber alkyl amine and ether amine add simultaneously;
(4) the recleaning flotation concentrate that step (3) is obtained filters, dries, and promptly gets KCl macrobead product.
Said step (1), crumbling method is preferred evenly broken, particle size after cracking is controlled at+0.5mm～5mm between ,-0.5mm content≤5% (quality).
Said step (2), the preferred rod milling of grinding mode, ore milling concentration is 30%～70% (quality).
Said step (3), said sludge suppressor factor can be but be not limited to treated starch or common flocculation agent.
Said sharp treated starch promptly can be cation-modified graft starch, also can be anion-modified graft starch.
Said cation-modified graft starch can be but is not limited to Xylo-Mucine or sodium hydroxyethlcellulose, and said anion-modified graft starch can be but is not limited to sodium cellulose glycolate or sodium hydroxyethyl cellulose.
Said common flocculation agent can be but is not limited to SEPIGEL 305.
Said cation-collecting agent kiber alkyl amine can be but is not limited to C
12～C
18Kiber alkyl amine, ether amine can be but is not limited to C
8～C
18Ether amine.
Said C
12～C
18Preferred octadecyl primary amine of kiber alkyl amine or hexadecyl primary amine, said C
8～C
18Preferred Octyl Ether amine of ether amine or decyl ethers amine.
Gained KCl macrobead product is pure white and translucent, mean particle size 1mm～2mm, KCl grade >=98% (quality), the general industry that surpasses II class, III class with and agricultural with KCl premium grads standard, reached the industrial KCl standard of standard GB 6549-1996 I class special type.
Compare with domestic existing extraction KCl technology, the present invention has following remarkable advantage: (1) technical process is simple, only once roughly select twice selected, be convenient to production operation, save the investment of a large amount of construction periods simultaneously; (2) good product quality, K
+The recovery is high, and the KCl purity that the present invention produces is high, and coarse size has very strong competitive power on market; (3) energy consumption is low, compares with dissolving crystallized method, and energy consumption of the present invention has a clear superiority in; (4) flotation reagent consumption of the present invention is less, nontoxic, can natural decomposition behind the certain hour, and the mine tailing granularity is thicker, and easy filtration, for underground solid sylvite ore, the mine tailing after the filtration can be used for the down-hole backfill, thereby environmentally safe or faint pollution is only arranged.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1
(1) will consist of K
+14.49%, Mg
2+0.97%, Na
+24.51%, Cl
-53.48% somewhere solid sylvite raw ore; Through evenly be crushed to-5mm is to+0.5mm; Add its saturated mother liquor and carry out the coarse grain ore grinding, ore milling concentration is about 50% (quality), and the sylvite size composition behind the ore grinding accounts for 85.63% (1mm ≈ 35.21%) (quality) for-2mm.
(2) material that step (1) is obtained is sent into flotation machine, adds the K in this sylvite ore deposit
+, Mg
2+, Na
+, Cl
-Full altogether mother liquor size mixing; Add Xylo-Mucine and suppress sludge; Consumption is roughly selected and is 100g/t, primary cleaning 40g/t, then adds collecting agent octadecyl primary amine and decyl ethers amine flotation KCl, octadecyl primary amine consumption 100g/t, decyl ethers amine consumption 50g/t; Flotation process is that twice of one roughing is selected, and flotation time is roughly selected 4 minutes, primary cleaning 3 minutes, recleaning 2 minutes.
(3) the recleaning flotation concentrate that step (2) is obtained filters, dries, and promptly gets fine macrobead KCl product, KCl grade>=98%, K
+The recovery is 95.87%.Product particle is pure white and translucent, mean particle size 1mm～2mm, and quality index is seen table 1.
Embodiment 2
(1) will consist of K
+14.49%, Mg
2+0.97%, Na
+24.51%, Cl
-53.48% somewhere solid sylvite raw ore, through evenly be crushed to-5mm to+0.5mm, add its saturated mother liquor and carry out the coarse grain ore grinding, ore milling concentration is 60.34% (quality), the sylvite size composition behind the ore grinding accounts for 75.82% (1mm ≈ 21.76%) for-2mm.
(2) material that step (1) is obtained is sent into flotation machine, adds the K in this sylvite ore deposit
+, Mg
2+, Na
+, Cl
-Full altogether mother liquor size mixing; Add sodium hydroxyethlcellulose and suppress sludge; Consumption adds collecting agent octadecyl primary amine and decyl ethers amine flotation KCl then for roughly selecting 60g/t, primary cleaning 20g/t, octadecyl primary amine consumption 150g/t, decyl ethers amine consumption 80g/t; Flotation process is that twice of one roughing is selected, and flotation time is roughly selected 5 minutes, primary cleaning 4 minutes, recleaning 3 minutes.
(3) the recleaning flotation concentrate that step (2) is obtained filters, dries, and promptly gets fine macrobead KCl product, KCl grade>=98%, K
+The recovery is 93.26%.Product particle is pure white and translucent, mean particle size 1mm～2mm, and quality index is seen table 2.
Embodiment 3
(1) will consist of K
+14.49%, Mg
2+0.97%, Na
+24.51%, Cl
-53.48% somewhere solid sylvite raw ore; Through evenly be crushed to-5mm is to+0.5mm; Add its saturated mother liquor and carry out the coarse grain ore grinding, ore milling concentration is 45.60% (quality), and the sylvite size composition behind the ore grinding accounts for 90.15% (1mm ≈ 41.28%) (quality) for-2mm.
(2) material that step (1) is obtained is sent into flotation machine, adds the K in this sylvite ore deposit
+, Mg
2+, Na
+, Cl
-Full altogether mother liquor size mixing; Add sodium cellulose glycolate and suppress sludge; Consumption adds collecting agent octadecyl primary amine and Octyl Ether amine flotation KCl then for roughly selecting 40g/t, primary cleaning 20g/t, octadecyl primary amine consumption 120g/t, Octyl Ether amine consumption 60g/t; Flotation process is that twice of one roughing is selected, and flotation time is roughly selected 3 minutes, primary cleaning 2 minutes, recleaning 2 minutes.
(3) the recleaning flotation concentrate that step (2) is obtained filters, dries, and promptly gets fine macrobead KCl product, KCl grade>=98%, K
+The recovery is 95.63%.Product particle is pure white and translucent, mean particle size 1mm～2mm, and quality index is seen table 3.
Claims (4)
1. a technology of utilizing the flotation of solid sylvite primary ore to extract coarse grain KCl is characterized in that, may further comprise the steps:
(1) solid sylvite primary ore is carried out fragmentation;
(2) broken material that step (1) is obtained carries out the coarse grain ore grinding, and the ore grain size behind the ore grinding accounts for 50%～90% (quality) for-2mm content, wherein-and 1mm content≤30% (quality);
(3) material that step (2) is obtained is sent into flotation machine, adds the sludge suppressor factor when roughly selecting earlier, adds collecting agent kiber alkyl amine and ether amine again, and flotation coarse grain KCl, flotation medium are the K of said sylvite primary ore
+, Na
+, Mg
2+, Cl
-Full altogether mother liquor, flotation process are that twice of one roughing is selected, add the sludge suppressor factor during primary cleaning once more; Flotation time is roughly selected 2～5 minutes, primary cleaning 1～4 minute, recleaning 1～3 minute; The flotation reagent consumption: the sludge suppressor factor adds at twice, wherein roughly selects to 30g/t～120g/t raw ore, primary cleaning are 15g/t～60g/t raw ore, and the collecting agent kiber alkyl amine is 50g/t～300g/t raw ore, and collecting agent ether amine is 40g/t～200g/t raw ore; Dosing method is the normal temperature dosing, and collecting agent kiber alkyl amine and ether amine add simultaneously;
Said sludge suppressor factor is Xylo-Mucine, sodium cellulose glycolate, sodium hydroxyethyl cellulose or SEPIGEL 305;
(4) the recleaning flotation concentrate that step (3) is obtained filters, dries, and promptly gets KCl macrobead product, said KCl macrobead product mean particle size 1mm～2mm.
2. according to the said technology of utilizing the flotation of solid sylvite primary ore to extract coarse grain KCl of claim 1, it is characterized in that, step (1), crumbling method be evenly fragmentation, particle size after cracking is controlled at+0.5mm～5mm between ,-0.5mm content≤5% (quality).
3. according to claim 1 or the 2 said technologies of utilizing the flotation of solid sylvite primary ore to extract coarse grain KCl, it is characterized in that, step (2), grinding mode is rod milling, ore milling concentration is 30%～70% (quality).
4. according to claim 1 or the 2 said technologies of utilizing the flotation of solid sylvite primary ore to extract coarse grain KCl, it is characterized in that said collecting agent kiber alkyl amine is C
12～C
18Kiber alkyl amine, ether amine is C
8～C
18Ether amine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010536078 CN101982412B (en) | 2010-11-09 | 2010-11-09 | Process for extracting KCl coarse grains by carrying out flotation on solid sylvinite primary ores |
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|---|---|---|---|
| CN 201010536078 CN101982412B (en) | 2010-11-09 | 2010-11-09 | Process for extracting KCl coarse grains by carrying out flotation on solid sylvinite primary ores |
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|---|---|
| CN101982412A CN101982412A (en) | 2011-03-02 |
| CN101982412B true CN101982412B (en) | 2012-07-04 |
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|---|---|---|---|
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976364B (en) * | 2012-12-06 | 2014-08-20 | 王定坤 | Method for processing sylvite salt mine with high mud content |
| CN102963912B (en) * | 2012-12-25 | 2014-08-27 | 中蓝连海设计研究院 | Process for producing potassium chloride by using potassic salt ores |
| CN103145152B (en) * | 2013-04-11 | 2013-11-13 | 中蓝连海设计研究院 | Process for extracting potassium chloride by coarse flotation of primary sylvine ores |
| CN103787696B (en) * | 2014-02-19 | 2016-03-02 | 中国科学院青海盐湖研究所 | A kind of preparation method containing potassic fertilizer and containing K composite fertilizer |
| CN103787372A (en) * | 2014-02-19 | 2014-05-14 | 中国科学院青海盐湖研究所 | Method for extracting potassium chloride from high-silt-content high-grade feldspar salt mine |
| RU2564834C1 (en) * | 2014-04-22 | 2015-10-10 | Акционерное общество "ВНИИ Галургии" (АО "ВНИИ Галургии") | Method of controlling sylvinite ore dissolution process |
| CN106492857A (en) * | 2016-10-19 | 2017-03-15 | 常州大学 | A kind of preparation method of cobalt oxide compound phosphoric acid yttrium catalyst |
| CN107381601B (en) * | 2017-09-12 | 2019-07-19 | 化工部长沙设计研究院 | A kind of method of high boron carnallite production KCl |
| CN109516477B (en) * | 2018-12-26 | 2021-10-08 | 青海盐湖工业股份有限公司 | Method and system for producing potassium chloride by using tail salt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3644102A (en) * | 1966-12-01 | 1972-02-22 | Struthers Scientific Int Corp | Crystallization of potassium chloride from carnallite decomposition |
| CN1259486A (en) * | 1999-01-04 | 2000-07-12 | 化学工业部连云港设计研究院 | Method of extracting potassium chloride from mixed ore of sylvine and carnallite |
| CN101613117A (en) * | 2009-07-28 | 2009-12-30 | 中蓝连海设计研究院 | Utilize primary sylvite ore deposit to produce the method for Repone K |
-
2010
- 2010-11-09 CN CN 201010536078 patent/CN101982412B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3644102A (en) * | 1966-12-01 | 1972-02-22 | Struthers Scientific Int Corp | Crystallization of potassium chloride from carnallite decomposition |
| CN1259486A (en) * | 1999-01-04 | 2000-07-12 | 化学工业部连云港设计研究院 | Method of extracting potassium chloride from mixed ore of sylvine and carnallite |
| CN101613117A (en) * | 2009-07-28 | 2009-12-30 | 中蓝连海设计研究院 | Utilize primary sylvite ore deposit to produce the method for Repone K |
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