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A method for preparing water glass co-production metal salt crystallization with silicon-rich clay

A technology of metal salt and water glass, applied in the fields of mineral utilization and metallurgy, can solve the problems of high energy consumption, high cost of water glass and high cost of raw quartz sand, and achieve the effects of low energy consumption, low cost and simple process.

Active Publication Date: 2022-04-12
潘爱芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the cost of raw material quartz sand is high, and the energy consumption required by high temperature of 1300~1400 ℃ is big, causes the cost of preparing water glass to be higher, how to provide a kind of method that does not need high-temperature calcining, low-cost preparation water glass is badly needed Technical issues resolved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] SiO in the silicon-rich clay used in this embodiment 2 The content is 42.85%, Fe 2 o 3 The content is 5.38%, Al 2 o 3 The content is 36.03%.

[0044] The method for preparing water glass co-production metal salt crystallization with silicon-rich clay, the specific steps are as follows:

[0045] S1. Crushing and grinding the silicon-rich clay to 100 mesh to obtain a powdery sample of the silicon-rich clay;

[0046] S2. According to the liquid-solid ratio of 10, place the lithium-rich clay ore powder sample obtained in step 1 in a sulfuric acid solution with a concentration of 4 mol / L, stir and dissolve for 6 hours at a temperature of 80°C, and filter and separate to obtain acid leaching Liquor and acid leaching residue;

[0047] S3, after mixing the acid leaching residue obtained in S2 with the sodium hydroxide solution with a mass concentration of 10% according to a mass ratio of 1:14, stir for 3 hours at a temperature of 60° C., filter to obtain water glass (sodi...

Embodiment 2

[0052] SiO in the silicon-rich clay of this embodiment 2 The content is 42.85%, Fe 2 o 3 The content is 5.38%, Al 2 o 3 The content is 36.03%. Specific steps are as follows:

[0053] The method for preparing water glass co-production metal salt crystallization with silicon-rich clay, the specific steps are as follows:

[0054] S1. Crushing and grinding the silicon-rich clay to 400 mesh to obtain a powdery sample of the silicon-rich clay;

[0055] S2. According to the liquid-solid ratio of 5, place the lithium-rich clay ore powder sample obtained in step 1 in a sulfuric acid solution with a concentration of 10 mol / L, stir and dissolve for 0.5 h at a temperature of 180°C, and separate by filtration to obtain acid Leach liquor and pickling residue;

[0056] S3, after mixing the acid leaching residue obtained in S2 with the sodium hydroxide solution with a mass concentration of 40% according to a mass ratio of 1:3.5, stir at a temperature of 100° C. for 0.5 h, and filter to...

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Abstract

The invention relates to a method for preparing water glass co-production metal salt crystallization by using silicon-rich clay. The silicon in the silicon-rich clay can be separated and extracted through acid-base combined step-by-step dissolution, and converted into water glass products. At the same time, aluminum and iron Crystallization of metal salts. The method of the invention has the advantages of simple process, no special requirements on equipment, low energy consumption, good controllability of process parameters, small residual residue, low cost, etc., and opens up a new way for the development and utilization of silicon-rich clay.

Description

technical field [0001] The invention relates to a method for preparing sodium silicate and co-producing metal salt crystals with silicon-rich clay, belonging to the technical fields of metallurgy and mineral utilization. Background technique [0002] Sodium silicate, commonly known as sodium silicate, is a water-soluble silicate, and its aqueous solution is commonly known as water glass, which is a mineral binder. The chemical formula is R 2 O nSiO 2 , where R 2 O is an alkali metal oxide, and n is the ratio of the number of moles of silicon dioxide and alkali metal oxide, which is called the modulus of water glass. [0003] The use of water glass is very extensive, almost throughout all sectors of the national economy. In the chemical system, it is used to manufacture various silicate products such as silica gel, white carbon black, zeolite molecular sieve, sodium metasilicate pentahydrate, silica sol, layer silicon and instant powdered sodium silicate, potassium sodium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/32C01G49/06C01F7/34
CPCC01B33/32C01G49/06C01F7/34
Inventor 潘爱芳马昱昭孙悦马润勇
Owner 潘爱芳