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Immersion type dissolution conversion method for solid kalium mine

A technology of solid potassium ore and solvent, applied in the direction of alkali metal chloride, etc., can solve the problems of unsolved solid potassium chloride, etc., achieve the effect of increasing recoverable volume, solving difficult discharge problems, and simple process

Active Publication Date: 2012-08-22
QINGHAI SALT LAKE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently, the potassium-magnesium salt deposits in Chaerhan Salt Lake, Qinghai, where solid and liquid potassium chloride co-exist, have not solved the problem of mining the solid potassium chloride in this type of deposit. Intergranular brine and pore brine in clastic layers, i.e. liquid potassium chloride

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment one: get several kilograms of a certain low-grade solid potassium salt ore from a certain mining area in Chaerhan Salt Lake, and know that the average chemical composition of the solid potassium salt layer by weight percentage is: potassium chloride is 2.41%, and sodium chloride is 62.47%, magnesium chloride 4.30%, water and water-insoluble matter 30.82%. Firstly, the old brine and fresh water after the drying of Yantian carnallite are prepared into a solvent according to a certain ratio. The chemical composition of the solvent by weight percentage is: 0.4% of sodium chloride, 22% of magnesium chloride, and 76.06% of water. Cubic meters of solid potassium ore plus 2.4 meters 3 The solvent is added. For the first time, 804.5 kg of solvent is injected into the solid potassium ore through the pipeline, so that the solvent just completely submerges the salt layer. After soaking the potassium-containing salt layer for 72 hours, the potassium salt minerals in the s...

Embodiment 2

[0007] Example 2: A mining method for low-grade solid potassium ore in a mining area of ​​Chaerhan Salt Lake. The mining area forms a closed "salt field" by building a clay separation wall, with an area of ​​1025 square meters, an average salt layer thickness of 1.2 meters, and an average weight of 1.54 tons per cubic meter Know that the average chemical composition of the solid potassium salt layer by weight percentage is 3.63% for potassium chloride, 83.19% for sodium chloride, 1.32% for magnesium chloride, and 11.86% for water and water-insoluble matter through sampling analysis. Firstly, the bischofolite and fresh water after drying the Yantian carnallite are mixed to make a solvent. The chemical composition of the solvent by weight percentage is: 6.0% of sodium chloride, 16% of magnesium chloride, and 77.03% of water. Cubic meters of solid potassium ore plus 0.45 meters 3 The solvent is added, and then 383.4 tons of solvent are injected into the salt layer by pipeline tra...

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Abstract

The invention belongs to the technical field of mining technology and in particular relates to a method for mining a chloride type solid kalium mine in a saline. The process flow of the method comprises the following steps: a solvent is prepared, filtered and soaked; and hyperkalemia brine is obtained through mining. The process condition comprises that the prepared solvent in solvent preparationcomprises the following chemical compositions in weight percentage: 16 to 22 percent of magnesium chloride, 0.4 to 6 percent of sodium chloride and the balance being other chemical substances and water. The soaking time of the solvent at a time in soaking is between 20 and 72 hours. By adopting the method, the conversion rate of dissolution reaches as high as 80 percent; saline bittern is adoptedas a raw material to reduce environment pollution and production expenses; rock salt in the solid kalium mine of the saline can not be dissolved; the stratum structure is effectively protected; in addition, sodium chloride in a salt layer can not be precipitated from the solvent in dissolution in a large amount so as not to block the original holes in the salt layer.

Description

1. Technical field: [0001] The invention relates to a method for dissolving and mining chloride-type salt lake solid potassium ore, in particular to a mining method for dispersed, low-grade and difficult-to-mine solid potassium ore, and belongs to the technical field of mining. 2. Technical background: [0002] Currently, the potassium-magnesium salt deposits in Chaerhan Salt Lake, Qinghai, where solid and liquid potassium chloride co-exist, have not solved the problem of mining the solid potassium chloride in this type of deposit. Intergranular brine and pore brine in clastic layers, i.e. liquid potassium chloride. How to exploit the potassium chloride in the solid potassium-magnesium salt ore is one of the problems that researchers urgently need to solve. 3. Contents of the invention: [0003] The purpose of the present invention is to design and research a kind of potassium that exists in the salt lake in view of the coexistence of solid potassium and liquid potassium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D3/08
Inventor 王兴富王石军海吉忠谢邦牢严宝成
Owner QINGHAI SALT LAKE IND
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