Method for recovering associated sulphide copper-zinc ore from cyaniding slag of gold-silver concentrate

A technology for sulfide ore, copper and zinc, applied in solid separation, flotation and other directions, can solve problems such as deteriorating factory operating environment, hydrogen cyanide gas overflow, safety problems, etc., to reduce environmental pollution, improve economic benefits, and improve resource utilization rate effect

Inactive Publication Date: 2015-12-02
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using sulfuric acid to acidify the pulp to destroy the cyanide on the surface of the mineral, although it has a certain effect on activating the copper-lead-zinc sulfide ore in the flotation slag, but after the acidification, the hydrogen cyanide gas will overflow, which will deteriorate the operating environment of the factory and easily cause safety problems

Method used

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  • Method for recovering associated sulphide copper-zinc ore from cyaniding slag of gold-silver concentrate
  • Method for recovering associated sulphide copper-zinc ore from cyaniding slag of gold-silver concentrate
  • Method for recovering associated sulphide copper-zinc ore from cyaniding slag of gold-silver concentrate

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Embodiment 1

[0025] like figure 1 Shown process flow diagram of the present invention, reclaims the method for associated copper-zinc sulfide ore from gold-silver concentrate cyanide slag, comprises the steps:

[0026] 1) Pulping: add 2.86% copper, 3.85% zinc, and 29.51% sulfur gold and silver cyanide slag into water for pulping. The pulp concentration is 30%. Add LGY-01 activator 12000g / t and stir for 5 minutes.

[0027] 2) Copper-zinc mixed flotation: add 70g / t of combined collector of butyl xanthate and butylamine black medicine, 10g / t of foaming agent, conduct a rough separation, and perform a second sweep to obtain a copper-zinc mixed coarse concentrate , the weight ratio of butyl xanthate and butylamine black medicine is 3:2, and the foaming agent is 2 # Oil.

[0028] 3) Copper-zinc rough concentrate suppresses zinc and floats copper: Add 3000g / t of inhibitor combined with sodium sulfide and zinc sulfate at a ratio of 2:1, stir for 2 minutes, conduct a rough separation, and obtain ...

Embodiment 2

[0032] Adopt the step of the inventive method to reclaim certain cyanide slag as

[0033] 1) Pulping: Add water to a cyanide slag containing 2.53% copper, 3.13% zinc, and 25.86% sulfur for pulping. The pulp concentration is 30-35%, preferably 33%. Add LGY-01 activator 10000g / t, stirring for 5 minutes.

[0034] 2) Copper-zinc mixed flotation: add 80g / t of combined collector of butyl xanthate and butylamine black medicine, 12g / t of foaming agent, conduct first roughing, and second sweeping to obtain copper-zinc mixed coarse concentrate , the weight ratio of butyl xanthate and butylamine black medicine is 3:2, and the foaming agent is 2 # Oil.

[0035] 3) Copper-zinc flotation: Add 3000g / t inhibitor of sodium sulfide and zinc sulfate combined in a ratio of 2:1, stir for 2 minutes, conduct a rough separation, and obtain a copper concentrate; select copper tails The ore uses lime to adjust the pH value of the pulp at about 11, adding 600g / t of copper sulfate as an activator of z...

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Abstract

The invention discloses a method for recovering associated sulphide copper-zinc ore from cyaniding slag of gold-silver concentrate and belongs to the technical field of flotation recovery of valuable metals in the gold smelting industry. The method comprises the steps of preparing pulp: preparing the cyaniding slag of the silver concentrate into the pulp with the concentration of 30-35% under the condition of the roughing concentration of ore flotation and injecting into a flotation machine, activating with LGY-01 as an activator for the floatation of sulphide copper-zinc ore, and obtaining copper-zinc mixed concentrate via single roughing and single scavenging by taking a combination of butyl xanthate and butylamine dithiophosphate at a weight ratio of 3:2 as a collecting agent and 2# oil as a foaming agent, wherein the activator LGY-01 is prepared from sodium pyrosulfite and sodium hydrosulfite at a weight ratio of 5:1. The method is a floatation technology for floatation recovery of the sulphide copper-zinc concentrate from the gold-silver cyaniding slag, increases a resource utilization rate, reduces environmental pollution and increases economic benefits of an enterprise.

Description

technical field [0001] The invention belongs to the technical field of flotation recovery of valuable metals in the gold smelting industry, and in particular relates to a method for recovering associated copper-zinc sulfide ore by non-sulfuric acid activation flotation from gold and silver concentrate cyanide slag. Background technique [0002] Mineral resources are a kind of non-renewable resources, which play a very important role in the process of national economic development. With the continuous exploitation and utilization of mineral resources by human beings, the exploitable resources are decreasing day by day. my country's gold mines discharge more than 20 million tons of gold and silver cyanide tailings every year. Some mineral raw ore grades are not high, but after the cyanide leaching process, valuable elements will be enriched. Most of the cyanide tailings contain There are recyclable gold, silver, copper, zinc, lead, sulfur, iron and other valuable elements. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 邱廷省艾光华邱仙辉陈江安方夕辉
Owner JIANGXI UNIV OF SCI & TECH
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