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Method for extracting and separating valuable metal from hot-acid leaching residues produced by wet-process zinc smelting

A valuable metal, high leaching slag technology, applied in solid separation, flotation and other directions, can solve the problems of high recovery cost, poor practical operability, and high technical difficulty of associated metals, and achieve the enrichment of valuable metal grade, effective separation, Practical effect

Active Publication Date: 2015-06-24
巴彦淖尔紫金有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above studies have achieved good experimental results, but the technical difficulty is high, the actual operability is poor, the recovery cost of associated metals is high, and the efficiency is low, which greatly limits the promotion and application of the technology.

Method used

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  • Method for extracting and separating valuable metal from hot-acid leaching residues produced by wet-process zinc smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Taking the lead-silver slag composition as silver content 260g / t, iron mass percentage 25%, and lead mass percentage 7% as an example, extraction and separation from the high leaching slag produced by wet zinc smelting The method for valuable metals comprises two steps: (1) decomposition and enrichment of high leaching slag; (2) flotation; wherein,

[0027] (1) Decomposition and enrichment of high leaching slag: Under strong alkaline conditions, the valuable metal elements released after decomposition of jarosite and silicate in high leaching slag are converted into forms that are easy to float;

[0028] (2) Flotation: the silver, iron, and lead in the high leaching slag after step (1) decomposed-transformed are selected through flotation technology to select silver concentrate, iron concentrate and lead concentrate respectively.

[0029]Specifically, step (1) decomposes and enriches high leaching residue, mixes water and high leaching residue at a mass ratio...

Embodiment 2

[0040] Example 2: Taking the lead-silver slag composition as an example with a silver content of 300g / t, an iron mass percentage of 23%, and a lead mass percentage of 6% as an example, extraction and separation from the high leaching slag produced by wet zinc smelting The method for valuable metals comprises two steps: (1) decomposition and enrichment of high leaching slag; (2) flotation; wherein,

[0041] (1) Decomposition and enrichment of high leaching slag: Under strong alkaline conditions, the valuable metal elements released after decomposition of jarosite and silicate in high leaching slag are converted into forms that are easy to float;

[0042] (2) Flotation: the silver, iron, and lead in the high leaching slag after step (1) decomposed-transformed are selected through flotation technology to select silver concentrate, iron concentrate and lead concentrate respectively.

[0043] Specifically, step (1) decomposes and enriches the high leaching residue, mixes water and ...

Embodiment 3

[0054] Example 3: Taking the lead-silver slag composition as silver content 200g / t, iron mass percentage 22%, and lead mass percentage 5% as an example, extraction and separation from the high leaching slag produced by wet zinc smelting The method for valuable metals comprises two steps: (1) decomposition and enrichment of high leaching slag; (2) flotation; wherein,

[0055] (1) Decomposition and enrichment of high leaching slag: Under strong alkaline conditions, the valuable metal elements released after decomposition of jarosite and silicate in high leaching slag are converted into forms that are easy to float;

[0056] (2) Flotation: the silver, iron, and lead in the high leaching slag after step (1) decomposed-transformed are selected through flotation technology to select silver concentrate, iron concentrate and lead concentrate respectively.

[0057] Specifically, step (1) decomposes and enriches the high leaching slag, mixes water and high leaching slag at a mass ratio ...

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Abstract

The invention discloses a method for extracting and separating valuable metal from hot-acid leaching residues produced by wet-process zinc smelting. The method is characterized by including two steps that 1 disintegration and beneficiation are conducted on the hot-acid leaching residues; 2 flotation is conducted, wherein 1 the disintegration and beneficiation are conducted on the hot-acid leaching residues: in a strong alkaline condition, valuable metal elements are released by disintegrating meta-voltaite and silicate from the hot-acid leaching residues and translated to a material with a form easy to floate; 2 the flotation is conducted: after the hot-acid leaching residues are disintegrated and valuable metal elements are translated, silver concentrate, iron ore concentrate and lead concentrate are selected from silver, iron and lead of the hot-acid leaching residues respectively by using a flotation technology. The method has the advantages that precious metal silver, valuable metal iron and valuable metal lead are effectively disintegrated and beneficiated; a series of environmental influence problems caused by stack of residues are solved; an industry chain is extended, and the comprehensive utilization level of resources is improved; the practical operability of the technology is high, and mass production application can be achieved.

Description

Technical field: [0001] The invention relates to a method for extracting and separating valuable metals, in particular to a method for extracting and separating valuable metals from high leaching slag produced by wet zinc smelting. Background technique: [0002] With the vigorous advancement of the industrialization process, the demand for non-ferrous metal products has increased significantly, and the output of non-ferrous metals has also increased year by year. Correspondingly, it is necessary to vigorously supply the mineral raw materials required for smelting. However, modern industry has been developed for hundreds of years, and mineral resources have been consumed to a certain extent. The increase in total demand year by year is contradictory to the limitation of supply and demand resources and the decreasing law of total supply and demand resources. It is impossible to completely resolve this contradiction. Possibly, the only way to slow down the highlight of contradi...

Claims

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Application Information

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IPC IPC(8): B03D1/018
Inventor 孙明生吴玉席杜敏仙伟龙任杰崔红红沙涛刘德祥
Owner 巴彦淖尔紫金有色金属有限公司
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