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Method for preparing high-purity gold-loaded pyrite for experiments

A golden pyrite, high-purity technology, applied in chemical instruments and methods, wet separation, flotation, etc., can solve the problems that gold-loaded pyrite cannot be reached, cannot be researched, and affected

Active Publication Date: 2015-02-11
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is no high-purity gold-loaded pyrite or the gold-loaded pyrite fails to meet the relevant requirements, relevant research cannot be carried out
At present, there are few basic researches on gold-loaded pyrite at home and abroad, and the purity of gold-loaded pyrite used in the existing research literature is very low (less than 80%) or gold concentrate is directly used instead of gold-loaded pyrite for related basic theoretical research. A large amount of organic carbon, MgO, SiO2, Al2O3, and CaO impurities have a great impact on the research, and the experimental results or conclusions cannot correctly express the chemical or physical changes in the basic theoretical research process of gold-loaded pyrite.

Method used

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  • Method for preparing high-purity gold-loaded pyrite for experiments
  • Method for preparing high-purity gold-loaded pyrite for experiments
  • Method for preparing high-purity gold-loaded pyrite for experiments

Examples

Experimental program
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Effect test

example 1

[0033] Example 1: A gold concentrate in Guizhou is first slurried, and then gravity separation is carried out on the shaker, and the parameters such as the appropriate flushing speed, stroke, stroke, bed slope and other parameters of the shaker are adjusted so that the gold-loaded pyrite and Other impurities form obvious separation bands, the medium ore is returned to gravity separation, and the concentrate is further selected to obtain the final gold-loaded pyrite concentrate. The gold-loaded pyrite concentrate is washed once in a 1mol / L hydrochloric acid solution at room temperature. The washing time is 30 minutes. After washing, wash once with acetone at a temperature of 40°C for 30 minutes each time. After washing, wash twice with distilled water for 20 minutes each time. After washing, place it at room temperature to dry naturally, and take samples for analysis The prepared gold-loaded pyrite has a purity of 96.85% and a yield of 15.96%.

example 2

[0034] Example 2: A gold concentrate in Guizhou is first slurried, and then gravity separation is carried out on the shaking table, and the parameters such as the appropriate flushing speed, stroke, stroke times, and bed slope of the shaking table are adjusted so that the gold-loaded pyrite and Other impurities form obvious separation bands, the middle ore returns to gravity separation, and the concentrate is purified again to obtain gold-loaded pyrite concentrate, which is finally re-selected with gold-loaded pyrite concentrate. 1. No. 2 oil is used as collector, and water glass is used to suppress SiO2 under the conditions of one roughing and one beneficiation, and the flotation gold-loaded pyrite obtained is washed twice at room temperature in 2mol / L hydrochloric acid solution, and the washing time is 40min , after washing, wash with ethanol twice at a temperature of 50°C for 40 minutes each time, wash with distilled water 3 times for 30 minutes each time after washing, and ...

example 3

[0035] Example 3: A gold concentrate in Guizhou is first slurried, and then gravity separation is carried out on the shaking table, and the parameters such as the appropriate flushing speed, stroke, stroke times, and bed slope of the shaking table are adjusted to make gold-loaded pyrite and Other impurities form obvious separation bands, the middle ore returns to gravity separation, and the concentrate is selected again to obtain gold-loaded pyrite, and the gold-loaded pyrite concentrate will be finally re-selected using potassium amyl xanthate as a collector. Water glass and sodium hexametaphosphate are used to suppress SiO2 Reagent conditions for one roughing and one-time beneficiation, the obtained flotation-loaded gold pyrite is dearsenicized by pulp heating and oxidant oxidation method, and then the flotation-loaded gold pyrite is mixed in 2mol / L hydrochloric acid solution at room temperature for 3 times, the washing time is 50min, after the washing is completed, use tolu...

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Abstract

The invention relates to a method for preparing high-purity gold-loaded pyrite for experiments. The method is characterized in that the high-purity gold-loaded pyrite is prepared from gold concentrate to be treated by a mineral separation-chemical separation and purification method; the purity of the gold-loaded pyrite prepared by the method is over 96 percent; the wrapped gold content is more than 50 g / t; and the dried gold-loaded pyrite is stored under a certain condition. The gold-loaded pyrite prepared by the method has high purity, few impurities, uniform granularity and regular mineral surface, can serve as a basic research raw material associated with gold-loaded pyrite oxidation, surface structure research, flotation reagent design and the like in the fields of metallurgy, mineral separation, mineral processing and the like, and has the advantages of simple process, high recovery rate, wide source of raw materials and the like.

Description

1. Technical field [0001] The invention belongs to the field of mineral processing and utilization, in particular to a preparation method of high-purity gold-loaded pyrite for experiment. 2. Background technology [0002] With the gradual depletion of easy-to-treat gold ore resources, refractory gold ore has become the main raw material for gold extraction. my country's refractory gold ore accounts for 1 / 3 of my country's total gold resources, of which a large amount in the "Yunnan, Guizhou, and Guangxi" regions Refractory gold mines that contain arsenic and organic carbon fine particles are representative. More than 75% of the gold in these gold mines is gold wrapped in pyrite, and there is also a small amount of gold wrapped in arsenopyrite and silicate. The body and continuous gold are less than 15%. The current public welfare flotation gold concentrate has problems such as low recovery rate and high tailing gold content. [0003] The direct cyanidation leaching rate of go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B5/04B03D1/00B03D1/08C22B1/00C22B11/00
Inventor 黄中省吴智衷水平伍赠玲鲁军邹来昌陈景河
Owner ZIJIN MINING GROUP