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Method for preparing industrial sodium silicate by using waste copper sulfur tailings

A technology of copper-sulfur tailings and sodium silicate, applied in silicates, alkali metal silicates, chemical instruments and methods, etc., can solve the problem of poor quality of liquid water glass products, impurities of alumina and iron in quartz concentrates Advanced problems, to achieve the effect of high utilization rate, huge economy, and emission reduction

Active Publication Date: 2017-06-23
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: the high content of impurities alumina and iron in the obtained quartz concentrate and the poor quality of the final liquid water glass product

Method used

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  • Method for preparing industrial sodium silicate by using waste copper sulfur tailings
  • Method for preparing industrial sodium silicate by using waste copper sulfur tailings
  • Method for preparing industrial sodium silicate by using waste copper sulfur tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A copper-sulfur tailings mine in Fujian needs to use SiO 2 Mainly, followed by alunite and dickite, a small amount exists in the form of sericite, feldspar, chlorite, epidote, etc. The chemical multi-element analysis results of copper-sulfur tailings are shown in Table 1.

[0029] Table 1 The multi-element analysis results of a copper-sulfur tailing in Fujian (%)

[0030]

[0031] A method for preparing industrial sodium silicate from waste copper-sulfur tailings, which comprises the following steps and conditions in sequence:

[0032] The first step of flotation to remove impurities: first add sulfuric acid or sulfuric acid solution to adjust the pH value of the copper tailings slurry to 3.0, then add butylammonium black medicine at 60-80g / t and stir for a certain period of time, then add at 10-15g / t No. 2 oil is subjected to flotation to remove sulfur impurities, and tailings slurry 1 is obtained after removing sulfur impurities; tailings slurry 1 is then added wi...

Embodiment 2

[0038] A copper-sulfur tailings mine in Jiangxi needs to use SiO 2 Mainly, followed by alunite and dickite. The chemical multi-element analysis results of the copper-sulfur tailings are shown in Table 2.

[0039] Table 2 Multi-element analysis results of a copper-sulfur tailings in Jiangxi (%)

[0040]

[0041] A method for preparing industrial sodium silicate from waste copper-sulfur tailings, which is carried out in the following steps and conditions:

[0042] The first step of flotation to remove impurities: first add sulfuric acid or sulfuric acid solution to adjust the pH value of the copper tailings slurry to 4.0, then add the collector agent butylammonium black drug and stir for a certain period of time, then add the foaming agent No. 2 oil for flotation Remove sulfur impurities, and obtain tailings slurry 1 after removing sulfur impurities; tailings slurry 1 is then added with collector dodecylamine and collector sodium oleate in sequence and stirred for a certain ...

Embodiment 3

[0048] A copper-sulfur tailing in Heilongjiang needs to use SiO 2 Mainly, followed by alunite and dickite, and a small amount in the form of detrital quartz, microcrystalline quartz and kaolin. The chemical multi-element analysis results of the copper-sulfur tailings are shown in Table 2.

[0049] Table 3 Multi-element analysis results of a copper-sulfur tailings in Heilongjiang (%)

[0050]

[0051] A method for preparing industrial sodium silicate from waste copper-sulfur tailings, which is carried out in the following steps and conditions:

[0052] The first step of flotation to remove impurities: first add sulfuric acid or sulfuric acid solution to adjust the pH value of the copper tailings slurry to 5.0, then add the collector agent butyl ammonium black drug and stir for a certain period of time, then add the foaming agent No. 2 oil for flotation Remove sulfur impurities, and obtain tailings slurry 1 after removing sulfur impurities; tailings slurry 1 is then added wi...

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Abstract

The invention relates to a method for preparing industrial sodium silicate by using waste copper sulfur tailings. The method is conducted according to the following step procedures and conditions: performing flotation to remove impurities: adjusting the PH value of copper tailing slurry, adding ammonium dibutyl dithiophosphate, stirring, adding second oil, performing flotation to remove impurities to obtain tailing slurry 1, adding lauryl amine and sodium oleate, stirring, performing reverse flotation to remove impurities such as dickite and alunite to obtain tailing slurry 2, and performing solid liquid separation to obtain quartz concentrate 1; roasting: adding a carbon powder and sodium chloride, mixing uniformly and roasting to obtain roasting clinker; performing acid leaching to remove impurities: feeding the roasting clinker into an acid leaching system, enabling copper, iron and the like in the roasting clinker to leach out, performing solid liquid separation to obtain a leaching liquid and acid leach residue, grading the acid leaching residue to obtain overflow and underflow, and performing solid liquid separation and drying on the underflow to obtain quartz concentrate 2; melting at a high temperature: adding the quartz concentrate 2 into sodium carbonate, mixing uniformly, melting and pouring to obtain a solid sodium silicate product. The method has the advantages of simplicity in process operation, high in practicability, environmental friendliness, easiness in industrialization and the like, and is suitable for comprehensive utilization of mineral resources.

Description

technical field [0001] The invention relates to the technical field of mine solid waste treatment, in particular to a method for preparing industrial sodium silicate from waste copper-sulfur tailings, which is suitable for comprehensive utilization of mineral resources. Background technique [0002] Mineral resources are non-renewable resources and the basis for human survival and development. During the rapid economic development of our country, about 85% of raw materials come from mineral resources. However, the useful components that can be used in the process of development and utilization of mineral resources are quite limited, and more than 90% of copper-sulfur tailings will be produced after beneficiation of commonly used copper mines. After testing, the main component of copper-sulfur tailings is quartz, accounting for about About 70% is a potential secondary resource, can it be used as a raw material for the production of industrial sodium silicate? Sodium silicat...

Claims

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Application Information

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IPC IPC(8): C01B33/32
CPCC01B33/325
Inventor 谭希发巫銮东陈炳如沈贤德丘财庆詹剑
Owner ZIJIN MINING GROUP
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