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Method for recycling copper mineral in gold concentrate cyanation tail slag

A technology of cyaniding tailings and gold concentrate, applied in the field of smelting, can solve problems such as hidden dangers, great safety and environmental protection, and low copper concentrate content, and achieve the effects of eliminating hazards, high recovery rate, and weakening inhibition

Inactive Publication Date: 2019-04-12
ZHAOJIN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, on the one hand, copper flotation is carried out under acidic conditions, which requires high anti-corrosion equipment, and there are great safety and environmental protection risks, and the smell in the flotation workshop is heavy; on the other hand, flotation The content of copper concentrate is low, only 8%-10%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Under the temperature condition of 10°C, 20 tons of copper-containing 0.4wt% gold concentrate cyanidation tailings were mixed with water to obtain a pretreated gold concentrate cyanidation tailings slurry with a mass fraction of 35%. The cyanidation tailings slurry is transported to the pretreatment reaction tank, and lime milk is added to the pretreatment gold concentrate cyanidation tailings slurry to adjust the pH value to 10.5, and then 55kg of sodium metabisulfite is added, and at the same time, it is aerated and stirred. It is mainly to fill with oxygen so that the oxygen concentration is 6mg / L, react for 90 minutes, then add 4kg of sodium sulfide, 2kg of sodium hydrosulfide and 2kg of sodium ethylenediamine phosphate into the pretreatment reaction tank, stir and activate for 30 minutes to obtain activated Then add 0.2kg of terpineol oil, 0.8kg of sodium isoamyl xanthate and 0.4kg of isobutyl allyl thiocarbamate to the activated pulp, and finally transport it to th...

Embodiment 2

[0027] Under the temperature condition of 20°C, 30 tons of copper-containing 0.43wt% gold concentrate cyanidation tailings were mixed with water to obtain a pretreated gold concentrate cyanidation tailings slurry with a mass fraction of 34%. Transport the cyanide tailings slurry to the pretreatment reaction tank, add lime milk to the pretreated gold concentrate cyanide tailings slurry to adjust the pH value to 11, then add 75kg of sodium metabisulfite, and aerate and stir at the same time Mainly fill in oxygen to make the oxygen concentration 7mg / L, react for 95 minutes, then add 6kg of sodium sulfide, 3kg of sodium hydrosulfide and 3kg of sodium ethylenediamine phosphate into the pretreatment reaction tank, stir and activate for 30 minutes to obtain activated Then add 0.3kg of terpineol oil, 1.2kg of sodium isoamyl xanthate and 0.6kg of isobutyl allyl thiocarbamate to the activated pulp, and finally transport it to the inflatable stirring flotation Carry out flotation and com...

Embodiment 3

[0030] Under the temperature condition of 30°C, 30 tons of copper-containing 0.44wt% gold concentrate cyanidation tailings were mixed with water to obtain a pretreated gold concentrate cyanidation tailings slurry with a mass fraction of 35%. Transport the cyanide tailings slurry to the pretreatment reaction tank, add lime milk to the pretreated gold concentrate cyanide tailings slurry to adjust the pH value to 11, then add 75kg of sodium metabisulfite, and aerate and stir at the same time It is mainly filled with oxygen so that the oxygen concentration is 8mg / L, react for 90 minutes, then add 6kg of sodium sulfide, 3kg of sodium hydrosulfide and 3kg of sodium ethylenediamine phosphate into the pretreatment reaction tank, stir and activate for 30 minutes to obtain activated Then add 0.3kg of terpineol oil, 1.2kg of sodium isoamyl xanthate and 0.6kg of isobutyl allyl thiocarbamate to the activated pulp, and finally transport it to the inflatable stirring flotation Flotation and ...

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Abstract

The invention belongs to the technical field of smelting, and particularly relates to a method for recycling a copper mineral in gold concentrate cyanation tail slag. The method comprises the following steps that A, water is added to the gold concentrate cyanation tail slag to prepare slurry to obtain pre-processed gold concentrate cyanation tail slag slurry, and the pH value of the pre-processedgold concentrate cyanation tail slag slurry is adjusted to obtain gold concentrate cyanation tail slag slurry; B, sodium pyrosulfite is added in the gold concentrate cyanation tail slag slurry obtained in the step A, air inflation and stirring are conducted to react, and sodium sulfide, sodium hydrosulfide and ethylenediamine sodium phosphate are added for activation to obtain ore pulp; and C, theore pulp after activation in the step B is conveyed to an inflatable mixing and flotation machine, terpenic oil, sodium isopentyl xanthate and allyl thiocarbamate isobutylester are added for flotation and filter pressing, and the copper mineral is obtained. According to the method, the sodium pyrosulfite is added in the gold concentrate cyanation tail slag to pre-process the gold concentrate cyanation tail slag, the inhibitory effect of cyanide on copper mineral is weakened, and the copper mineral recycling rate is high.

Description

technical field [0001] The invention belongs to the technical field of smelting, and in particular relates to a method for recovering copper minerals in gold concentrate cyanidation tailings. Background technique [0002] In gold and silver concentrates suitable for direct conventional cyanidation treatment (referring to gold ores with an average gold content of 40-60g / t), most of the minerals are accompanied by a certain amount of valuable metals such as copper, lead, and zinc. In the prior art, after the gold concentrate is directly cyanided to extract gold and silver, elements such as copper are recovered from the cyanided tailings. However, in the prior art, on the one hand, copper flotation is carried out under acidic conditions, which requires high anti-corrosion equipment, and there are great safety and environmental protection risks, and the smell in the flotation workshop is heavy; on the other hand, flotation The content of copper concentrate is low, which can onl...

Claims

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Application Information

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IPC IPC(8): B03B9/04B03B1/04B03D1/00
CPCB03B1/04B03B9/04B03D1/00
Inventor 王永成徐忠敏王志正张玉涛李雪林舒凯杨浩智
Owner ZHAOJIN MINING
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