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Collecting agent for high-sulfur copper mine

A collector, copper ore technology, applied in solid separation, flotation and other directions, can solve the problems of low copper concentrate recovery rate, excessive sulfur content, corporate and social losses, etc.

Inactive Publication Date: 2012-12-05
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the flotation separation of high-sulfur copper ore, the actual beneficiation results cannot meet the design requirements, the separation of copper and sulfur is not ideal, the sulfur content in copper concentrate products exceeds the standard, and the recovery rate of copper concentrate is low, resulting in waste of mineral resources. , bring losses to enterprises and society

Method used

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  • Collecting agent for high-sulfur copper mine
  • Collecting agent for high-sulfur copper mine
  • Collecting agent for high-sulfur copper mine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a, preparation of alkyl dithiophosphoric acid thioether ester

[0026] 38Kg of commercially available chloroethyl benzyl sulfide was slowly added dropwise to the 60Kg butanol solution in which 41Kg of ethylammonium black drug was dissolved, and it was 2 hours from the beginning of the dropwise addition to the end of the addition. In an alkaline environment formed by pyridine or sodium carbonate, stir and keep warm at 90°C for 20 minutes, cool to room temperature, ammonium chloride precipitates, filter to remove ammonium chloride, depressurize the reactor, and distill off butanol. The oily ethyl dithiophosphoric acid thioether ester is obtained and filled into a plastic-lined iron drum. The effective content of the ethyl dithiophosphoric acid thioether ester in this reaction can reach 75%, and the yield is about 85%.

[0027] b, preparation of thiazonitrile ester

[0028] Add 17Kg of carbon disulfide into the reactor for stirring and pass cooling brine, successively add...

Embodiment 2

[0035] Under normal temperature and pressure, the alkyl dithiophosphoric acid thioether ester, thiazonitrile ester, ethyl xanthate propionitrile ester, and thiazolate prepared by the method of Example 1 were selected according to the groups specified in the following table 1. Put it into the stirring tank in different amounts, and stir and mix at room temperature for 50 minutes to obtain the collector composition of the present invention. Then the collector was used for beneficiation test of copper ore, and the test results are listed in Table 1.

Embodiment 3

[0037] Under normal temperature and pressure, the alkyl dithiophosphoric acid thioether ester, thiazonitrile ester, ethyl xanthate propionitrile ester, and thiazolate prepared by the method of Example 1 were selected according to the groups specified in the following table 1. Put it into the stirring tank in different amounts, and stir and mix at room temperature for 45 minutes to obtain the collector composition of the present invention. Then the collector was used for beneficiation test of copper ore, and the test results are listed in Table 1.

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Abstract

The invention relates to a flotation agent for a copper mine and discloses a high-efficiency collecting agent for a high-sulfur copper mine. The collecting agent comprises the following materials in parts by weight: 30-40 parts of alkyl phosphorodithioic acid thioether ester, 25-35 parts of cyanoethyl diethyl dithionocarbamate, 10-20 parts of alkyl xanthic acid propionitrile ester and 10-15 parts of sulfur-nitrogen ester. The collecting agent for the high-sulfur copper mine has double functions of collecting and foaming, is good in selectivity and high in collecting ability, can realize high-efficiency separation of copper from sulfur in a low pH value (approximately 5) range, can effectively reduce the consumption of lime in the floatation process, can effectively increase the grade and recovery rate of concentrate, and has a wider application scope.

Description

technical field [0001] The invention relates to a flotation agent for copper ore, in particular to a high-efficiency collector for high-sulfur copper ore. Background technique [0002] The effective separation of copper and sulfur in high-sulfur copper ore has always been a technical problem in the beneficiation industry. Most domestic copper-sulfur ore flotation collectors improve their selectivity by reducing their collection capacity, and the beneficiation of copper concentrate Compared with foreign countries, the gender indicators are lower, which also brings a series of problems to smelting. In the current copper ore flotation process, the dominant copper sulfide collectors are xanthates, thiophosphates and mercaptans, etc. These collectors must be in alkaline pulp with a pH value of about 10 Operation, and use lime to suppress pyrite, the flotation effect is very unsatisfactory in a low pH value environment. Later, through continuous improvement and development, flot...

Claims

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Application Information

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IPC IPC(8): B03D1/014B03D101/02
Inventor 李冠军余江鸿吴斌周涛张析张红张科峰
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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