Preparation method of auxiliary collecting agent for improving recovery rate of associated gold in antimonite

An auxiliary collector and stibnite technology, applied in solid separation, flotation, etc., can solve problems such as poor buoyancy, ineffective gold recovery, and mica or quartz are not as good as other sulfides in buoyancy, and achieve pharmaceutical The effects of less dosage, improved recovery, good selectivity and low temperature resistance

Inactive Publication Date: 2015-12-16
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two methods can effectively recover antimony-gold minerals, the priority flotation process is likely to introduce too much gold-bearing minerals into antimony concentrates, reduce the grade of antimony concentrates and exceed the standard of harmful elements, so mixed flotation is generally used. Separation process after selection
Mixed flotation generally uses sulfuric acid or copper sulfate to activate first, and then add xanthate, black powder, sulfur nitrogen, etc. for flotation collection. The f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An example of the preparation method of the auxiliary collector that improves the associated gold recovery rate in the stibnite of the present invention may further comprise the steps:

[0015] First, mix oxalic acid, hydrochloric acid and water at a mass ratio of 1:1:2 to obtain solution 1, then add ammonium phosphate to solution 1 at a mass ratio of 1:2, and stir until dissolved at a temperature of 70°C to obtain solution 2; Then add ammonium sulfate ester to solution 2 at a mass ratio of 1:1, and react under the condition of 2Mpa for 2-4 hours to obtain a liquid agent that is the auxiliary collector.

Embodiment 2

[0017] Another example of the preparation method of the auxiliary collector that improves the associated gold recovery rate in the stibnite of the present invention comprises the following steps:

[0018] Mix oxalic acid, hydrochloric acid and water at a mass ratio of 1:2:3 to obtain solution 1, then add ammonium phosphate to solution 1 at a mass ratio of 2:5, and stir at a temperature of 75°C until dissolved to obtain solution 2; then Add ammonium sulfate ester to solution 2 at a mass ratio of 2:3, and react under the condition of 2.5Mpa for 2-4 hours to obtain a liquid agent that is the auxiliary collector.

Embodiment 3

[0020] This embodiment is an application example of the auxiliary collector for improving the recovery rate of associated gold in stibnite in flotation.

[0021] 1. Mineral raw materials:

[0022] The mineral raw materials used are stibnite and gold-loaded sulfide ore, in which the antimony content is 1.35%, the arsenic content is 0.78%, the sulfur content is 6.32%, and the gold content is 3.50g / t. The phase analysis shows that the antimony minerals in the ore Mainly stibnite, with a small amount of stibnite; gold-bearing minerals are mainly stibnite, pyrite, arsenopyrite, a small amount of quartz and mica; gangue minerals are mainly carbonate calcium-magnesium minerals.

[0023] 2. Chemical system and operating conditions: Grind the ore until the mineral monomers are dissociated, add sulfuric acid to adjust the pH of the slurry to 6.5-7, then add 250g / t of water glass as inhibitor, add 50g / t of lead nitrate and 80g of copper sulfate / t as activator, add 120g / t of butyl xanth...

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PUM

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Abstract

A preparation method of an auxiliary collecting agent for improving the recovery rate of associated gold in antimonite comprises the following steps: first mixing oxalic acid, hydrochloric acid and water at a mass ratio of (1-1):(1-2):(2-3) to obtain a solution 1; then adding ammonium phosphate into the solution 1 at a mass ratio of (1-2):(2-5), and performing stirring at 70-75 DEG C to dissolve the ammonium phosphate to obtain a solution 2; and next, adding ammonium sulfolipid into the solution 2 at a mass ratio of (1-2):(1-3), conducting reaction for 2-4 h at 2-2.5Mpa to obtain a liquid agent, namely the auxiliary collecting agent.

Description

1. Technical field [0001] The invention relates to a preparation method of an auxiliary collector for improving the recovery rate of associated gold in stibnite. 2. Background technology [0002] At present, the flotation recovery of stibnite and associated gold at home and abroad generally adopts the optimal flotation process or the mixed flotation process. The priority flotation process is to preferentially float antimony sulfide minerals under certain conditions, and then flotation gold-containing sulfide minerals; the mixed flotation process is to add certain chemicals under certain conditions to float antimony and gold to form a mixed concentrate. Although these two methods can effectively recover antimony-gold minerals, the priority flotation process is likely to introduce too much gold-bearing minerals into antimony concentrates, reduce the grade of antimony concentrates and exceed the standard of harmful elements, so mixed flotation is generally used. Separate the p...

Claims

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Application Information

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IPC IPC(8): B03D1/014B03D101/02
Inventor 魏宗武林美群陈晔穆枭
Owner GUANGXI UNIV
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