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Bismuth sulfide mineral inhibiting agent and application thereof

A technology of inhibitors and minerals, applied in solid separation, flotation, etc., to achieve the effects of reducing mineral processing costs, stable processes, and safe operating environments

Active Publication Date: 2018-10-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, dextrin and other polysaccharide inhibitors are rarely used in sulfide ore flotation, and the combination of dextrin + hydrogen peroxide + gallic acid is rarely reported in sulfide ore depressants.

Method used

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  • Bismuth sulfide mineral inhibiting agent and application thereof
  • Bismuth sulfide mineral inhibiting agent and application thereof
  • Bismuth sulfide mineral inhibiting agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1. Mineral raw materials

[0053] A copper-bismuth sulfide ore in a place in Jiangxi Province was taken, with a copper grade of 0.11% and a bismuth grade of 0.09%. Among them, the copper-bearing minerals are mainly chalcopyrite, and the bismuth-bearing minerals are mainly bismuthite.

[0054] 2. The operation steps and technical conditions are as follows:

[0055] ① Grind the raw copper-bismuth sulfide ore to -200 mesh, accounting for 80-85%, and add sodium carbonate to adjust the pH of the slurry to 8-9;

[0056] ②Add 300g / t xanthate, stir for 3 minutes, add 80g / t ethyl disulfide, stir for 3 minutes, add 25g / t 2# oil, stir for 3 minutes, then carry out mixed roughing operation to obtain mixed roughing concentrate and mixed roughing tailings;

[0057]③ Weigh 3 parts of hydrogen peroxide, 3 parts of gallic acid and 1 part of dextrin according to parts by mass. After mixing, add 500g / t to the roughing concentrate. After stirring for 3 minutes, separate copper and bismu...

Embodiment 2

[0061] 1. Mineral raw materials

[0062] A copper-bismuth sulfide ore in a place in Jiangxi Province was taken, with a copper grade of 0.11% and a bismuth grade of 0.09%. Among them, the copper-bearing minerals are mainly chalcopyrite, and the bismuth-bearing minerals are mainly bismuthite.

[0063] 2. The operation steps and technical conditions are as follows:

[0064] ① Grind the raw copper-bismuth sulfide ore to -200 mesh, accounting for 80-85%, and add sodium carbonate to adjust the pH of the slurry to 8-9;

[0065] ②Add 300g / t xanthate, stir for 3 minutes, add 80g / t ethyl disulfide, stir for 3 minutes, add 25g / t 2# oil, stir for 3 minutes, then carry out mixed roughing operation to obtain mixed roughing concentrate and mixed roughing tailings;

[0066] ③ Weigh 3 parts of hydrogen peroxide, 3 parts of gallic acid and 1 part of dextrin in parts by mass, add them separately to the mixed roughing concentrate at an amount of 500g / t, stir for 3 minutes and carry out the sep...

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PUM

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Abstract

The invention discloses a bismuth sulfide mineral inhibiting agent and application thereof. The inhibiting agent comprises the following components in parts by mass: 2-5 parts of hydrogen peroxide, 3-4 parts of gallic acid, and 1-2 parts of dextrin. In a flotation process of sulfide minerals containing bismuth, 50-500 g / t combined inhibiting agent is added in each flotation according to each tonnage of raw ore minerals, so that the inhibition of the sulfide minerals containing bismuth can be realized. The bismuth sulfide mineral inhibiting agent has the advantages of high acting effect, low use level and the like, is free of using such high-consumption medicaments as poisonous cyanides, lime and sodium sulfide to reduce environmental pollution, meanwhile, reduces the beneficiation cost, and improves the sorting index.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal beneficiation, and in particular relates to a bismuth sulfide mineral inhibitor and a use method thereof. Background technique [0002] Bismuth-containing polymetallic sulfide ores are densely symbiotic among different minerals, and bismuth-containing minerals are difficult to suppress in flotation due to the activation of copper ions and reagent ions. At the same time, bismuthite has good natural buoyancy, so it is difficult to Other minerals are separated. The flotation separation of polymetallic sulfide ores has always been highly valued by workers at home and abroad, and good progress has been made in the development of new agents and processes in recent years. [0003] The inhibition of bismuth sulfide is one of the key issues to realize the separation of bismuth sulfide ore and other polymetallic sulfide ores. Currently, the inhibitors used mainly include sodium silicate mixture, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
Inventor 胡岳华林上勇刘润清孙伟王丽韩海生
Owner CENT SOUTH UNIV
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