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Production method of sylvinite

A production method, the technology of potassium halite, applied in the direction of alkali metal chloride, etc., can solve the problems of difficult control of water and mineral ratio, waste of water resources, large equipment loss, etc., to reduce equipment load, control, energy saving and emission reduction , The effect of reducing energy consumption and loss

Inactive Publication Date: 2019-03-15
QINGHAI SALT LAKE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a production method of potassium halite, which is used to solve the problems in the prior art that the water-mine ratio is difficult to control, the equipment loss is large, and the waste of water resources is caused by dissolving carnallite with water.

Method used

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  • Production method of sylvinite
  • Production method of sylvinite
  • Production method of sylvinite

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Collect the waste liquid to be treated containing potassium to the waste liquid recovery tank, the waste liquid to be treated includes the solid-liquid mixture discharged from the underflow of the thickener in the thermal solution system; the waste water to be treated is collected to the waste water recovery tank, and the waste water to be treated includes cooling water; the waste liquid to be treated and the waste water to be treated are proportioned in a clarifier to obtain a potassium-containing mother liquor; 159.6 tons of the potassium-containing mother liquor are dissolved in a decomposition tank to dissolve 100 tons of carnallite ore to obtain ore pulp, The dissolution temperature is 10°C, and the dissolution time is 22 minutes; the pulp is filtered through a filter to obtain 63.48 tons of potassium halite and filtrate, which are transported to the salt field for drying.

[0054] In this embodiment, the mass fractions of each component of the potassium-containing ...

Embodiment 2

[0058] Collect the potassium-containing waste liquid to be treated to the waste liquid recovery tank, the waste liquid to be treated includes the magnesium discharge mother liquor of the crystallization system; the waste water to be treated is collected to the waste water recovery tank, and the waste water to be treated includes equipment flushing water; The waste liquid to be treated and the waste water to be treated are proportioned in a clarifier to obtain a potassium-containing mother liquor; 135 tons of the potassium-containing mother liquor are dissolved in a decomposition tank with 100 tons of carnallite raw ore to obtain a pulp with a dissolution temperature of 8°C. The dissolution time is 27 minutes; the pulp is filtered through a filter to obtain 80 tons of potassium halite and filtrate, which is transported to the salt field for drying.

[0059] In this embodiment, the mass fractions of each component of the potassium-containing mother liquor, the carnallite ore, the...

Embodiment 3

[0063] Collect the potassium-containing waste liquid to be treated to the waste liquid recovery tank, the waste liquid to be treated includes the magnesium discharge mother liquor of the crystallization system; the waste water to be treated is collected to the waste water recovery tank, and the waste water to be treated includes equipment flushing water; The waste liquid to be treated and the waste water to be treated are proportioned in a clarifier to obtain a potassium-containing mother liquor; 110 tons of the potassium-containing mother liquor are dissolved in a decomposition tank with 100 tons of carnallite raw ore to obtain ore pulp, and the dissolution temperature is 12 ° C. The dissolution time is 17 minutes; the pulp is filtered through a filter to obtain 47.19 tons of potassium halite and filtrate, which are transported to the salt field for drying.

[0064] In this embodiment, the mass fractions of each component of the potassium-containing mother liquor, the carnalli...

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Abstract

The invention discloses a production method of sylvinite. The production method of sylvinite comprises the following steps: proportioning potassium-containing to-be-treated waste liquor and to-be-treated wastewater to obtain a potassium-containing mother liquor; dissolving carnallite raw ores by the potassium-containing mother liquor to obtain ore pulp; and filtering the ore pulp to obtain the sylvinite. By proportioning the waste liquor and the wastewater to obtain the potassium-containing mother liquor and dissolving the carnallite raw ores by the potassium-containing mother liquor, magnesium chloride is dissolved massively and magnesium chloride is separated out in a saturated manner by means of a common ion effect, so that the sylvinite containing relatively high potassium quantity andmeeting the demands of refining potassium chloride is obtained, and water resources are saved. Influences on control 0f a follow-up production process and energy conservation and emission reduction are reduced as far as possible. Moreover, the carnallite raw ores are dissolved by the potassium-containing mother liquor, so that the baume degree of the ore pulp is increased, and the load of equipment is alleviated, therefore, the energy consumption and the loss of the equipment are further reduced to achieve the purpose of recycling resources, and the economical benefit is improved.

Description

technical field [0001] The invention relates to the technical field of resource reuse, in particular to a production method of potassium halite. Background technique [0002] Qinghai is a resource-rich province with a wide variety of natural resources, among which the representative resources are salt lake resources, and the salt lake resources mainly include sedimentary resources and brine resources. Salt lake brine is a liquid chloride mineral resource, rich in various components, and can be processed Potassium chloride is obtained to produce potassium fertilizer. Potassium fertilizer is one of the three major chemical fertilizers of nitrogen and phosphorus and potassium. Potassium has a significant effect on regulating the life process in plants, and is beneficial to improve the absorption of water in plants and the synthesis and transfer of sugars. Use Potassium fertilizer can effectively improve the yield and quality of crops. [0003] There are many techniques for pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D3/08
CPCC01D3/08
Inventor 李兴海李建业贾顺恩马海洲郝江涛李艳庆张跃东马国军周凤杰李中华
Owner QINGHAI SALT LAKE IND
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