Flotation separation method for talc and copper sulphide

A technology of copper sulfide and talc, applied in flotation, solid separation, etc., can solve the problems of unstable index, easy to bring in impurity ions, high cost, etc., to increase the difference in floatability, reduce surface hydrophobicity, and achieve good results Effect

Active Publication Date: 2022-03-29
ZHENGZHOU UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used copper sulfide oxidants include peroxide, hypochlorite, bleaching powder and ozone, etc., but they all have the disadvantages of large dosage, easy generation of secondary products, easy introduction of impurity ions, high cost, etc., and industrial application is relatively difficult.
[0006] To sum up, in view of the current talc and copper sulfide flotation separation inhibitor dosage is large and the indicators are unstable, the oxidant cost is high and secondary products are easy to be produced, and the development of a copper sulfide and talc flotation separation method can not only Realize the high-efficiency separation of talc and copper sulfide, reduce the impact on copper concentrate smelting, and have great significance in increasing corporate income, improving resource value, and ensuring safe supply of copper metal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flotation separation method for talc and copper sulphide
  • Flotation separation method for talc and copper sulphide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment provides a method for the flotation separation of talc and copper sulfide. The mixed ore of talc and chalcopyrite in this example is an artificial mixed ore, prepared from pure minerals of chalcopyrite and talc in a mass ratio of 1:3. The fineness of the mixed concentrate is -0.074mm, accounting for 88.14%, and the copper grade in the mixed ore of talc and chalcopyrite is 8.70%.

[0071] Step 1: separate the cathode graphite sheet and the anode Ti / SnO 2 - Insert the Sb plate into the electrolytic cell, and add 0.05mol / L potassium nitrate solution to it, add talc and chalcopyrite mixed ore to the electrolytic cell while stirring, and control the pulp concentration to 5.0%;

[0072] Step 2: After stirring evenly, continue to stir, turn on the constant current source, apply a current of 0.7A to the electrolytic cell, and treat with a constant current for 20 minutes to obtain the pretreated mixed pulp;

[0073] Step 3: transfer the mixed pulp to the flotat...

Embodiment 2

[0077] This embodiment provides a method for the flotation separation of talc and copper sulfide.

[0078] In this embodiment, the talc-containing mixed copper concentrate produced by the conventional flotation process of a large porphyry copper mine is adopted, and the copper grade is 16.72%. The metal minerals in the talc-containing mixed copper concentrate are mainly chalcopyrite, chalcocite, pyrite, etc.; the gangue minerals are mainly talc, serpentine, quartz, mica, potassium feldspar, etc. Among them, the chalcopyrite content is 46.77%, and the talc content is 26.73%. The copper concentrate particle size -0.074mm accounts for 83.42%.

[0079] Step 1: separate the cathode copper sheet and the anode Pt-WO 3Insert the plate into the electrolytic cell, and add 0.1mol / L sodium nitrate solution to it, add talc-containing mixed copper concentrate to the electrolytic cell while stirring, and control the pulp concentration to 2.5%;

[0080] Step 2: After stirring evenly, conti...

Embodiment 3

[0085] This embodiment provides a method for the flotation separation of talc and copper sulfide.

[0086] In this example, a talc-containing mixed copper concentrate produced by a difficult-to-select polymetallic copper sulfide beneficiation plant in Yunnan through a process of first roughing, first mixing, third refining, second sweeping, mixing and refining, and then grinding to give priority to floating copper. The grade of copper in the talc-containing mixed copper concentrate is 14.65%, the content of chalcopyrite is 41.42%, and the content of talc is 21.51%. The magnesium oxide content exceeds the national quality standard requirements for fifth-grade copper concentrate. In addition, the particle size of the copper concentrate is -0.074mm, accounting for 79.88%.

[0087] Step 1: separate the cathode stainless steel sheet and the anode Ti / IrO 2 -Ta 2 o 5 Insert the plate into the electrolytic cell, and add 0.15mol / L sodium nitrate solution to it, add talc-containing m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a flotation separation method for talc and copper sulfide, which comprises the following steps: step 1, respectively inserting a cathode and an anode into an electrolytic bath, adding a salt solution into the electrolytic bath, and adding talc-containing copper sulfide bulk concentrate into the electrolytic bath while stirring; 2, after uniform stirring, stirring continues to be kept, a constant current source is turned on, current is applied to the electrolytic bath, constant current pretreatment is conducted for 15-35 min, and electrocatalytic oxidation pretreatment mixed ore pulp is obtained; and thirdly, the electrocatalytic oxidation pretreatment mixed ore pulp is transferred to a flotation system to be subjected to flotation operation, and copper sulfide and tailings are obtained. According to the invention, the surface hydrophobicity of the copper sulfide is reduced, so that the floatability difference between the talc and the copper sulfide is increased; effective separation of the two in flotation is achieved, and a large number of talc inhibitors do not need to be used.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal beneficiation and metallurgy, and in particular relates to a method for flotation separation of talc and copper sulfide. Background technique [0002] Copper ranks second in the consumption of non-ferrous metal materials in China. It is a very important non-ferrous metal and is widely used in electronic devices, mechanical processing and chemical industry. In recent years, with the rapid development of science and technology, especially electronic science, the demand for copper metal in all countries in the world is constantly rising. Chalcopyrite is the most important source of copper metal, and is an important industrial raw material and strategic resource. In the copper concentrate smelting process, if the talc content is too high, the high content of magnesium oxide will not only produce a large amount of slag, but also shorten the service life of the smelting furnace. Therefore, it...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018C22B15/00C22B1/00B03D101/02B03D101/04B03D103/02
CPCB03D1/018C22B15/0002C22B1/00B03D2201/007B03D2201/02B03D2201/04B03D2203/02
Inventor 彭伟军曹亦俊王伟黄宇坤
Owner ZHENGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap