Method for preparing liquid sodium silicate through copper and sulfide tailings

A technology of copper-sulfur tailings and sodium silicate, applied in chemical instruments and methods, solid waste removal, wet separation, etc., can solve the problems of easy collapse and landslides, injury to people, high storage and management costs, etc., to achieve Good social and economic benefits, reduced production costs, wide range of raw material sources

Active Publication Date: 2014-01-15
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of this treatment method are: the cost of building, maintaining and repairing the tailings pond and land acquisition for the construction of the tailings pond is quite large; the tailings are easy to flow and collapse when they are stockpiled, causing vegetation damage and injury accidents, especially Very prone to subsidence a

Method used

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  • Method for preparing liquid sodium silicate through copper and sulfide tailings

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Experimental program
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Embodiment 1

[0021] The copper-sulfur tailings are first graded by a hydrocyclone, the overflow product is directly thrown into the tail, and the underflow product enters the ceramic ball mill. According to the dry weight of the bottom flow of the hydrocyclone per ton, the grinding aid sodium chloride 150g / t is added for grinding , the grinding fineness is 81.62%, the ore discharged from the mill enters the flotation tank, and 40g / t of butyl xanthate, 20g / t of butyl ammonium black medicine, and 20g / t of terpineol oil are added in sequence, and the sulfur impurities are removed by flotation; Add 2500g / t of sodium carbonate to the flotation tailings to adjust the slurry, so that the pH value of the slurry reaches about 8, and then add 500g / t of sodium hexametaphosphate and 150g / t of oleic acid in turn to remove alunite by flotation; alunite flotation Add 1000g / t of dilute sulfuric acid to the tailings to adjust the pulp, so that the pH value of the pulp drops to about 6, then add 50g / t of ole...

Embodiment 2

[0024] The copper-sulfur tailings are first graded by a hydrocyclone, the overflow product is directly thrown into the tail, and the underflow product enters the ceramic ball mill. According to the dry weight of the bottom flow of the hydrocyclone per ton, 200g / t of grinding aid sodium chloride is added for grinding , the grinding fineness is 85.46%, the ore discharged from the mill enters the flotation tank, and butyl xanthate 50g / t, butyl ammonium black medicine 30g / t, terpineol oil 30g / t are added in turn, and sulfur impurities are removed by flotation; Add 3000g / t of sodium carbonate to the flotation tailings to adjust the slurry, so that the pH value of the slurry reaches about 9, then add 600g / t of sodium hexametaphosphate and 200g / t of oleic acid in turn, and remove the alunite through flotation; alunite flotation Add 1200g / t of dilute sulfuric acid to the tailings to adjust the slurry, so that the pH value of the slurry will drop to about 5, then add 60g / t of oleic acid...

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Abstract

The invention relates to a method for preparing liquid sodium silicate through copper and sulfide tailings. The liquid sodium silicate product is prepared with the step that the copper and sulfide tailings are graded through a whirlcone. Raw materials are wide in source, the technology is simple, energy consumption is low, practicability is high, the problem that the copper and sulfide tailings are large in emission load is relieved, waste is turned into valuable things, the purposes of reclamation and reduction of the tailings are achieved, and the method has good social benefits and economic benefits.

Description

1. Technical field [0001] The invention relates to the technical fields of mineral processing and chemical industry, in particular to a method for preparing liquid water glass from copper-sulfur tailings. 2. Background technology [0002] The grade of copper ore is decreasing day by day. For every 1 ton of mineral copper produced, 400 tons of waste rock and tailings will be produced. Tailings are the main source of pollution in mines. At present, the basic method of controlling copper tailings is to build dams and build reservoirs, that is, build dams on useless ravines or abandoned land, build a tailings pond for copper tailings, close the tailings pond after it is full, and restore vegetation . The problems of this treatment method are: the cost of building, maintaining and repairing the tailings pond and land acquisition for the construction of the tailings pond is quite large; the tailings are easy to flow and collapse when they are stockpiled, causing vegetation damage...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00B03C1/30B09B3/00C01B33/32
Inventor 沈青峰李广衷水平鲁军肖琴刘涛
Owner ZIJIN MINING GROUP
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