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A method of electrochemical oxidation degradation mineral surface flotation agent

A flotation agent and oxidative degradation technology, applied in the field of electrochemical oxidation degradation of mineral surface flotation agent, mineral surface flotation agent removal field, can solve very few problems, achieve reduced power loss, high degradation efficiency, select good effect

Active Publication Date: 2021-12-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrolysis has high treatment efficiency when dealing with single organic matter or organic matter in solution, but it is rarely used in the treatment of organic agents adsorbed on the surface of minerals in ore pulp

Method used

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  • A method of electrochemical oxidation degradation mineral surface flotation agent
  • A method of electrochemical oxidation degradation mineral surface flotation agent
  • A method of electrochemical oxidation degradation mineral surface flotation agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Huangshaping polymetallic concentrator adopts the process of flotation sulfide ore first, and then oxidized ore. A large amount of xanthate remains in the tailings of sulfur separation (that is, raw tungsten ore), which makes the tungsten separation section foam too much and merge. Poor sex. Electrolytic oxidation is used to degrade the surface of sulfur separation tailings, the electrode is graphite electrode, the current is 300mA, and the electrolyte is 200g / L Na 2 SO 4 , with the use of 0.05mol / L hydrochloric acid, the electrolysis time is 0.5 hours. The COD values ​​before and after electrolysis are shown below. The removal rate of organic matter on the mineral surface can reach 89.14%, which shows that the selectivity and efficiency of this method are very high.

[0034]

Embodiment 2

[0036] The flotation tungsten concentrate of Shizhuyuan Dongbo Concentrator in Chenzhou, Hunan Province contains a large amount of organic chemicals, mainly benzohydroxamic acid, which affects the filtration and packaging process of its products. Graphite electrode is selected, the applied current is 1000mA, the concentration of electrolyte NaCl is 50g / L, 0.001mol / L hydrochloric acid, and the electrolysis time is 1 hour. The electrolysis test is carried out on the flotation concentrate. The changes of total organic carbon and total nitrogen in the solution are as follows. In the electrolysis process, distilled water is used to make the concentrate into pulp in advance, and the organic matter on the mineral surface is desorbed from the mineral surface and enters the solution, which can effectively realize the removal of the mineral surface agent.

[0037]

Embodiment 3

[0039] In order to solve the problem of foam overflow caused by the agent adsorbed on the mineral surface in the combination process of persimmon and bamboo garden for metallurgical acid method pretreatment, graphite electrodes are selected, the applied current is 720mA, the concentration of electrolyte NaCl is 50g / L, and 0.01mol / L hydrochloric acid , for the flotation of tungsten concentrate pulp in the combination of dressing and smelting, the electro-oxidative drug removal test was carried out, and the results are as follows figure 1 shown. It can be seen that with the increase of electrolysis time, the foam layer formed by acid bubble pretreatment becomes thinner, the foam distribution becomes looser and the viscosity decreases significantly.

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Abstract

The invention discloses a method for electrochemically oxidizing and degrading mineral surface flotation reagents. The method is to add electrolyte to ore pulp and adjust the ore pulp to acidity, then place inert cathode and anode electrodes in the ore pulp, and pass through an electric current to carry out electrochemical oxidation and degradation The flotation agent on the surface of the concentrate in the pulp. Based on the differences in the electrochemical behavior of different flotation reagents and the chemical balance principle of the flotation solution, the method uses different intensities of applied currents and different concentrations and types of electrolytes to directly electrolyze the flotation pulp to achieve organic reagents adsorbed on the mineral surface. Directed oxidation desorption and degradation. This method is suitable for sulfide ore and oxidized ore organic chemical flotation system, and the method is simple, selective, and effective. It is useful for solving the problem of excess chemical affecting the enrichment of other useful minerals and eliminating the subsequent It is of great significance to release harmful gases during the drying process and solve the joint connection problem of dressing and smelting.

Description

technical field [0001] The invention relates to a method for removing mineral surface flotation agents, in particular to a method for degrading mineral surface flotation agents through electrochemical oxidation, and belongs to the technical field of mineral processing. Background technique [0002] With the continuous development of the mining engineering industry, mineral processing agents are constantly being updated. Organic chemicals have gradually become the mainstream of mineral processing agents due to their strong selectivity and collection capacity, such as the vast majority of collectors for sulfide ores, xanthate, Sulfur nitrogen, sulfur ammonia ester, sulfide mineral inhibitor starch and its modified products, dextrin, humic acid, oxidized mineral collector fatty acid, amine, hydroxamic acid, etc. In flotation pulp, especially concentrate pulp, a large amount of organic agents are adsorbed on the surface of minerals. Most of these organic agents have complex str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/10
CPCB03D1/10
Inventor 韩海生王若林孙伟胡岳华孙文娟
Owner CENT SOUTH UNIV
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