Method for processing low-grade potassium-containing rock

A low-grade potassium rock technology, which is applied in the field of processing low-grade potassium-containing rocks, can solve the problems of unfavorable promotion, high energy consumption, and high equipment requirements, and achieve the effect of eliminating the recovery process, low energy consumption, and low equipment requirements

Inactive Publication Date: 2015-11-18
铜仁市万山区盛和矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high energy consumption, high equipment requirements and unfavorable promotion in the prior art, the present invention provides a method with simple process and high flexibility of preparation conditions, which is specifically realized through the following scheme:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for processing low-grade potassium-containing rocks. The specific method is: after pulverizing the low-grade potassium-containing rocks, transfer them to a grinder, and add water for mixing and grinding at a temperature of 300° C., wherein the amount of water added is 3 times the weight of low-grade potassium-containing rocks, and slowly add sodium salt in the process of adding water and grinding, wherein, the amount of sodium salt added is 0.4 times the weight of low-grade potassium-containing rocks, and after the sodium salt is added, maintain the reaction temperature , the material was stirred for 7h, and filtered to obtain the filtrate and filter residue.

[0023] The potassium content in the low-grade potassium-bearing rocks is expressed in K 2 O is counted as 10%.

[0024] The particle size of the potassium-containing ore after crushing is 700 mesh.

[0025] Described sodium salt is the mixture of sodium chloride, sodium carbonate, sodium bicarbonate, s...

Embodiment 2

[0032] A method for processing low-grade potassium-containing rocks. The specific method is: after pulverizing the low-grade potassium-containing rocks, transfer them to a grinder, and add water for mixing and grinding at a temperature of 200°C, wherein the amount of water added is 2 times the weight of low-grade potassium-containing rocks, and slowly add sodium salt during the grinding process with water, wherein the amount of sodium salt added is 0.8 times the weight of low-grade potassium-containing rocks, and after the sodium salt is added, maintain the reaction temperature , the material was stirred for 6h, and filtered to obtain the filtrate and filter residue.

[0033] The potassium content in the low-grade potassium-bearing rocks is expressed in K 2 O is counted as 5%.

[0034] The particle size of the potassium-containing ore after crushing is 300 mesh.

[0035] Described sodium salt is the mixture of sodium chloride, sodium carbonate, sodium bicarbonate, sodium flu...

Embodiment 3

[0042] A method for processing low-grade potassium-containing rocks. The specific method is: after pulverizing the low-grade potassium-containing rocks, transfer them to a grinder, and add water for mixing and grinding at a temperature of 90°C, wherein the amount of water added is 4 times the weight of low-grade potassium-containing rocks, and at the same time, slowly add sodium salt during the grinding process with water, wherein the amount of sodium salt added is 0.6 times the weight of low-grade potassium-containing rocks, after the sodium salt is added, maintain the reaction temperature , the material was stirred for 9h, and filtered to obtain the filtrate and filter residue.

[0043] The potassium content in the low-grade potassium-bearing rocks is expressed in K 2 O counts as 14%.

[0044] The particle size of the potassium-containing ore after crushing is 600 mesh.

[0045] Described sodium salt is the mixture of sodium chloride, sodium fluoride, sodium thiosulfate, s...

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Abstract

Te invention belongs to the field of comprehensive potassium ore processing, and particularly relates to a method for processing low-grade potassium-containing rock. The method includes the steps that the low-grade potassium-containing rock is transferred into a grinding machine after being smashed; water is added at a temperature ranging from 100 DEG C to 700 DEG C for conducting mixing and grinding, wherein the amount of the added water is 1-5 times of the weight part of the potassium-containing rock; meanwhile, sodium salt is slowly added in the process of adding water for conducting grinding, wherein the amount of the added sodium salt is 0.2-1 time of the weight part of the low-grade potassium-containing rock; and after adding of the sodium salt is finished, the reaction temperature is kept, materials are stirred for 3-10 h, and a potassium-containing solution and fluosilicate are obtained through filtering. The method has the beneficial effects of being low in device requirement, cost and energy consumption, simple in process and high in potassium conversion rate.

Description

technical field [0001] The invention belongs to the field of comprehensive processing of potassium ore, and in particular relates to a method for processing low-grade potassium-containing rocks. Background technique [0002] As a big potash consuming country, my country's consumption accounts for about one-fifth of the world's total. In recent years, the world's potash production has continued to increase. As a country rich in potash rocks, its comprehensive utilization is of great strategic significance. . [0003] The treatment of potassium-containing rocks is dedicated to extracting useful elements in them, laying the foundation for the comprehensive utilization of potassium-containing rocks. Generally, the processes for processing potassium-containing rocks include (1) high-temperature method, which has high energy consumption, low potassium extraction rate, and harsh preparation conditions (2) autoclave method, the method equipment is complicated and its materials are h...

Claims

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Application Information

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IPC IPC(8): C22B26/10C22B3/44
CPCY02P10/20
Inventor 袁再六
Owner 铜仁市万山区盛和矿业有限责任公司
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