CN104192878B - A kind of method preparing carnallitite raw material from solid kalium mine - Google Patents
A kind of method preparing carnallitite raw material from solid kalium mine Download PDFInfo
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Abstract
The invention discloses and a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the steps: 1) get dilution tail halogen solution and mix with solid kalium mine; The mass percent diluting tail halogen Chlorine in Solution magnesium described in this is 22.5% ~ 27%, and the content of sodium-chlor is not higher than 1%; In described solid kalium mine, sodium chloride content is 48% ~ 79%, and content of magnesium chloride is 1% ~ 4%, potassium content by the mass percent of Repone K lower than 1%; 2) dilute tail halogen solution and solid kalium mine mixing, mixing time is 1 ~ 2 year; 3) separate solid and liquid, the aqueous solution of gained is introduced in evaporation tank, and vaporize water solution, when in the aqueous solution, the mass percent of Repone K reaches 1.0% ~ 4.0%, this aqueous solution is the raw material preparing carnallitite.The present invention utilizes discarded tail halogen and ultralow grade solid kalium mine to obtain carnallite, meets the requirement of recycling economy minimizing, recycling and resource utilization; Have wide practical use in the potassium resource exploitation of salt lake.
Description
Technical field
The invention belongs to salt lake resources complex art field, particularly a kind of method preparing carnallitite raw material from solid kalium mine.
Technical background:
Potash fertilizer is one of important factor of relation China agricultural safety, Cha Er Han Salt Lake is the major production base of China's potash fertilizer, the sylvite deposit that lake region has the commercial mining of largest domestic to be worth, solid mineral and liquid ore deposit in this mineral deposit are also deposited, wherein solid kalium mine accounts for about 55% (potassium in solid mineral exists with the form of carnallitite and sylvite) of total resources, but the ore bed of solid mineral is relatively thin, grade is lower, disperse the reason such as discontinuous to make directly exploitation there is larger difficulty.The mainly liquid ore deposit, potassium ore deposit of this lake region exploitation at present, along with the continuity of exploitation, the water level in liquid ore deposit constantly declines, and produced quantity and grade decline year by year.For tackling this situation, must develop and a kind ofly can exploit ultralow grade but the method for the solid potassium resource of enormous amount, the method as realized efficiently gathering for super low-grade potassium ore deposit, then has vast potential for future development.
The distribution of Charhan salt lake solid kalium mine has following feature: this solid mineral is potassium magnesium ore deposit, potassium exists with carnallite and sylvite ore form, solid mineral thickness is thin, grade is low, (discontinuous like cellular distribution, comparatively disperse), if directly exploit solid kalium mine separately, cost is higher, does not possess economic worth.
This area it is generally acknowledged the KCE content in solid mineral lower than 2% ore be ore lower than cut-off grade.In addition, also there is most of ore is super low grade ore less than 1%, and even KCE content is the ultralow grade rock of 0.1 ~ 0.5%.Exploitation at present for ultralow grade rock there is no effective way, if directly exploitation, does not possess economic benefit.
Charhan salt lake enterprise is in the process utilizing Liquid K ore deposit production potash fertilizer, and produce the tail halogen of amplification quantity side by side, this bittern is rich in magnesium chloride, but due to technical reason, current tail halogen is not fully utilized and goes out of use.
Charhan salt lake belongs to the continental dry climate in typical plateau, and wind is rainy few, and summer, steam output was very big, mean annual precipitation 23.7mm, for many years average evaporation capacity 3527.9mm, annual sunshine time 3182.9 hours, is the maximum area of domestic steam output.
The abundant sun power in Charhan salt lake, wind energy resources are widely used in salt pan, salt lake, but at home and abroad there is no and fully utilize ultralow grade solid kalium mine and the tail stew in soy sauce report for carnallitite aspect according to absorption-evaporating principle.
Summary of the invention
Cannot exploit the defect in super low grade potassium ore deposit in order to overcome prior art, the invention provides a kind of method preparing carnallitite raw material from ultralow grade solid kalium mine, the method goes for the exploitation that solid chlorine potassium content is the potassium ore deposit of 0.1 ~ 1%.
Technical scheme provided by the invention comprises:
Step 1): the dilution tail halogen solution getting certain mass (volume) mixes with the solid kalium mine of certain mass (volume) (volume ratio is 1:1 ~ 1.5:1, and this ratio can change as required); The mass percent diluting tail halogen Chlorine in Solution magnesium described in this is 22.5% ~ 27%, and the content of sodium-chlor is not higher than 1%; Also can comprise Repone K in this solution, the mass percent of described Repone K is 0.057% ~ 0.067%.In described solid kalium mine, sodium chloride content is 48% ~ 79%, and content of magnesium chloride is 1% ~ 4%, potassium content by the mass percent of Repone K lower than 1%; The content of described Repone K can be 0.1 ~ 0.5%, is more preferably 0.1 ~ 0.25%;
Step 2): dilution tail halogen solution and solid kalium mine mixing, mixing time is 1 ~ 2 year, and in solid kalium mine, the potassium of more than 90% can be absorbed by tail halogen solution;
Step 3): separate solid and liquid, the aqueous solution of gained is introduced in evaporation tank, and vaporize water solution, when in the aqueous solution, the mass percent of Repone K reaches 1.0% ~ 4.0%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Preferably, the volume ratio of described dilution tail halogen solution and solid kalium mine is 1:1 ~ 1.5:1.
The present invention has the following advantages:
1, the present invention utilizes dilution-dissolving-evaporating principle, does not add any chemical reagent, and achieving the raw material obtaining preparing carnallitite from tail halogen and ultralow grade solid kalium mine, can not cause artificial pollution to resource-area, is a kind of technology of environmental protection;
2, the present invention makes full use of natural energy resources and evaporates, and not needing the energy consuming other, reduce production cost, is a kind of technology of green.
The present invention utilizes discarded tail halogen, and technique is simple, easy handling, and it is with low cost, meet the requirement of recycling economy minimizing, recycling and resource utilization, the potassium resource of ultralow grade solid kalium mine can be fully used, and has wide practical use in the potassium resource exploitation of salt lake simultaneously.
Embodiment
The following is and a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material:
Step 1, the dilution tail halogen solution getting certain mass (volume) mix with the solid kalium mine of certain mass (volume).In this diluent, the mass percent of magnesium chloride is 22.5% ~ 27%, and the content of sodium-chlor is extremely low simultaneously; In this solid kalium mine, sodium chloride content is the highest, is secondly magnesium chloride, and potassium content is by the mass percent of Repone K lower than 1%, and major part is 0.1% ~ 0.5%, belongs to super low-grade solid kalium mine.
The mixing of step 2, the aqueous solution and solid kalium mine keeps certain hour, and according to concrete potassium ore deposit grade, mixing time is 1 ~ 2 year, and in solid kalium mine, the potassium of more than 90% can be absorbed by tail halogen solution;
Step 3, the bittern absorbing potassium composition in solid mineral separated from solid layer and introduces in evaporation tank, the natural energy resources such as sun power and wind energy is utilized to evaporate, control steam output, when the mass percent of potassium to be chlorinated reaches 1.0% ~ 4.0%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Embodiment 1, a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the following steps:
1, dilute tail halogen solution to mix with solid kalium mine, in this diluent, the mass percent of magnesium chloride is 22.5%, simultaneously the content extremely low (Repone K massfraction is 0.057%, and sodium-chlor massfraction is 0.6%) of sodium-chlor and Repone K; In this solid mineral, the content of sodium-chlor is the highest, and the content of potassium is 0.5% by the mass percent of Repone K, belongs to super low-grade solid kalium mine;
2, diluent and solid mineral mixing maintenance 2 years, then separate the bittern absorbing potassium composition in solid mineral and introduce evaporation tank from solid ore bed,
3, utilize sun power and wind energy to carry out evaporation bittern, when the mass percent of potassium to be chlorinated reaches 4.0%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Embodiment 2, a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the following steps:
1, dilute tail halogen solution to mix with solid kalium mine, in this diluent, the mass percent of magnesium chloride is 27%, simultaneously the content extremely low (Repone K massfraction is 0.067%, and sodium-chlor massfraction is 0.33%) of sodium-chlor and Repone K; In this solid mineral, the content of sodium-chlor is the highest, and the content of potassium is 0.1% by the mass percent of Repone K, belongs to super low-grade solid kalium mine;
2, diluent and solid mineral mixing maintenance 1 year, then separate the bittern absorbing potassium composition in solid mineral and introduce evaporation tank from solid ore bed,
3, utilize sun power and wind energy to carry out evaporation bittern, when the mass percent of potassium to be chlorinated reaches 3.5%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Embodiment 3, a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the following steps:
1, dilute tail halogen solution to mix with solid kalium mine, in this diluent, the mass percent of magnesium chloride is 24%, simultaneously the content extremely low (Repone K massfraction is 0.060%, and sodium-chlor massfraction is 0.5%) of sodium-chlor and Repone K; In this solid mineral, the content of sodium-chlor is the highest, and the content of potassium is 0.25% by the mass percent of Repone K, belongs to super low-grade solid kalium mine;
2, diluent and solid mineral mixing maintenance 1 year, then separate the bittern absorbing potassium composition in solid mineral and introduce evaporation tank from solid ore bed,
3, utilize sun power and wind energy to carry out evaporation bittern, when the mass percent of potassium to be chlorinated reaches 1.0%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Embodiment 4, a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the following steps:
1, dilute tail halogen solution to mix with solid kalium mine, in this diluent, the mass percent of magnesium chloride is 22.5%, simultaneously the content extremely low (Repone K massfraction is 0.057%, and sodium-chlor massfraction is 0.6%) of sodium-chlor and Repone K; In this solid mineral, the content of sodium-chlor is the highest, and the content of potassium is 0.25% by the mass percent of Repone K, belongs to super low-grade solid kalium mine;
2, diluent and solid mineral mixing maintenance 2 years, then separate the bittern absorbing potassium composition in solid mineral and introduce evaporation tank from solid ore bed,
3, utilize sun power and wind energy to carry out evaporation bittern, when the mass percent of potassium to be chlorinated reaches 3.5%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Embodiment 5, a kind ofly utilize ultralow grade solid kalium mine to prepare the method for carnallitite raw material, comprise the following steps:
1, dilute tail halogen solution to mix with solid kalium mine, in this diluent, the mass percent of magnesium chloride is 24%, simultaneously the content extremely low (Repone K massfraction is 0.06%, and sodium-chlor massfraction is 0.5%) of sodium-chlor and Repone K; In this solid mineral, the content of sodium-chlor is the highest, and the content of potassium is 0.25% by the mass percent of Repone K, belongs to super low-grade solid kalium mine;
2, diluent and solid mineral mixing maintenance 1 year, then separate the bittern absorbing potassium composition in solid mineral and introduce evaporation tank from solid ore bed,
3, utilize sun power and wind energy to carry out evaporation bittern, when the mass percent of potassium to be chlorinated reaches 2.5%, this aqueous solution is the raw material preparing carnallitite, can be used for preparing carnallite.
Claims (2)
1. prepare a method for carnallitite raw material from solid kalium mine, comprise the steps:
1) get dilution tail halogen solution with solid kalium mine mix; The mass percent diluting tail halogen Chlorine in Solution magnesium described in this is 22.5% ~ 27%, and the content of sodium-chlor is not higher than 1%; In described solid kalium mine, sodium chloride content is 48% ~ 79%, and content of magnesium chloride is 1% ~ 4%, and potassium content is 0.1 ~ 0.25% by the mass percent of Repone K;
2) dilute tail halogen solution and solid kalium mine mixing, mixing time is 1 ~ 2 year;
3) separate solid and liquid, the aqueous solution of gained is introduced in evaporation tank, and vaporize water solution, when in the aqueous solution, the mass percent of Repone K reaches 1.0% ~ 4.0%, this aqueous solution is the raw material preparing carnallitite.
2. method according to claim 1, is characterized in that, the volume ratio of described dilution tail halogen solution and solid kalium mine is 1:1 ~ 1.5:1.
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Citations (3)
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| CN1872686A (en) * | 2005-07-25 | 2006-12-06 | 魏新俊 | Method for producing carnallite in low sodium or potassium chloride by using brine of containing potassium |
| CN101402462A (en) * | 2008-09-21 | 2009-04-08 | 青海盐湖工业集团股份有限公司 | Immersion type dissolution conversion method for solid kalium mine |
| CN102583449A (en) * | 2012-02-23 | 2012-07-18 | 格尔木藏格钾肥有限公司 | Low-grade solid potassium chloride ore solid-to-liquid method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872686A (en) * | 2005-07-25 | 2006-12-06 | 魏新俊 | Method for producing carnallite in low sodium or potassium chloride by using brine of containing potassium |
| CN101402462A (en) * | 2008-09-21 | 2009-04-08 | 青海盐湖工业集团股份有限公司 | Immersion type dissolution conversion method for solid kalium mine |
| CN102583449A (en) * | 2012-02-23 | 2012-07-18 | 格尔木藏格钾肥有限公司 | Low-grade solid potassium chloride ore solid-to-liquid method |
Non-Patent Citations (3)
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| "察尔汗盐湖尾卤稀释回灌溶解固体钾盐提高盐湖资源综合开发回收利用率";赵强等;《中国钾盐工业》;20071231(第2期);第65-66、60页 * |
| "涩聂湖湖水驱动溶解固体钾矿固液转化量计算";王文祥等;《中国矿业》;20130430;第22卷(第4期);第102-105页 * |
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Address after: 816000 15-02, Kunlun South Road, Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province, China Patentee after: Geermu Zangge Potassium Fertilizer Co. , Ltd. Patentee after: Qinghai Yanhu Inst., Chinese Academy of Sciences Address before: 816000 15-02, Kunlun South Road, Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province, China Patentee before: GOLMUD POSSESSION GRID POTASH CO., LTD. Patentee before: Qinghai Yanhu Inst., Chinese Academy of Sciences |