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Method for preparing chalcopyrite electrode

A chalcopyrite and electrode technology, applied in the direction of material electrochemical variables, measuring devices, instruments, etc., can solve the problems that affect the electrochemical corrosion results of chalcopyrite, poor ductility, chalcopyrite brittleness, etc.

Active Publication Date: 2016-09-28
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation method of chalcopyrite electrode, so as to solve the brittleness of chalcopyrite in the prior art, poor ductility and symbiosis of chalcopyrite and other sulfide minerals, and the primary battery between symbiotic minerals The effect will affect the electrochemical corrosion results of chalcopyrite and other factors, and the existing chalcopyrite electrodes are difficult to process and prepare technical problems

Method used

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Examples

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preparation example Construction

[0030] A kind of preparation method of chalcopyrite electrode, it comprises

[0031] Step 1, select chalcopyrite particles;

[0032] Step 2, cleaning and drying the chalcopyrite particles for subsequent use;

[0033] Step 3. Weigh 0.5-0.7 g of the dried chalcopyrite particles, grind them into a powder of more than 200 meshes, press the chalcopyrite powder into a chalcopyrite cylinder with a pressure of 2 MPa in a powder tablet press and use silver foil wrapping;

[0034] Step 4. Weigh 1.2-1.4g of sodium chloride and grind it into a powder of more than 200 meshes, place the sodium chloride powder in an oven and dry at 150°C for 1-5 hours;

[0035] Step 5, preparing a sodium chloride cylinder containing a chalcopyrite cylinder with the dried sodium chloride powder;

[0036] Step 6, putting the sodium chloride cylinder obtained in step 5 into a high-pressure assembly block, and performing heating and pressure sintering;

[0037] Step 7. After the sintering is completed, the s...

Embodiment example 1

[0054] Break the chalcopyrite-containing rock into 40-60 meshes, select the chalcopyrite particles with a purity of 99%-100% under the binocular lens, ultrasonically clean them with acetone for 10-20 minutes, and then clean them with absolute ethanol. Then place it in an oven at a temperature of 30-60°C for 5-30 minutes and then dry it for later use. Weigh 0.5g-0.7g of chalcopyrite particles, grind it into a powder of more than 200 mesh, press it into a cylinder under the condition of 2MPa in a powder tablet press, and wrap it with silver foil. Weigh 1.2-1.4g of sodium chloride and grind it into a powder of more than 200 mesh, place it in an oven at 150°C for 1-5h, and then dry it for later use. Weigh 0.55-0.65g of sodium chloride, press it into a cylindrical shape in a powder tablet press, then place the chalcopyrite cylinder in the middle of the upper surface of the sodium chloride cylinder, and then pour 0.65-0.75g of sodium chloride Sodium covering, compaction under the c...

Embodiment example 2

[0060] Break the chalcopyrite-containing rock into 40-60 meshes, select the chalcopyrite particles with a purity of 99%-100% under the binocular lens, ultrasonically clean them with acetone for 10-20 minutes, and then clean them with absolute ethanol. Then place it in an oven at a temperature of 30-60°C for 5-30 minutes and then dry it for later use. Weigh 0.5g-0.7g of chalcopyrite particles, grind it into a powder of more than 200 mesh, press it into a cylinder under the condition of 2MPa in a powder tablet press, and wrap it with silver foil. Weigh 1.2-1.4g of sodium chloride and grind it into a powder of more than 200 mesh, place it in an oven at 150°C for 1-5h, and then dry it for later use. Weigh 0.55-0.65g of sodium chloride, press it into a cylindrical shape in a powder tablet machine, then place the chalcopyrite cylinder in the middle of the upper surface of the sodium chloride cylinder, and then pour 0.65-0.75g of sodium chloride Sodium covering, compaction under the...

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Abstract

A method for preparing a chalcopyrite electrode comprises the following steps: choosing chalcopyrite particles; cleaning the chalcopyrite particles, and then drying for later use; weighing 0.5-0.7 g of the dried chalcopyrite particles, grinding into powder of 200 meshes or above, pressing chalcopyrite powder into a chalcopyrite cylinder at the pressure of 1 MPa in a powder compressing machine, and wrapping the chalcopyrite cylinder with a silver foil; weighing 1.2-1.4 g of sodium chloride, meshing into powder of 200 meshes or above, placing sodium chloride in an oven, and drying at the temperature of 150 DEG for 1-5 h; preparing a sodium chloride cylinder containing the chalcopyrite cylinder by use of dried sodium chloride powder; placing the obtained sodium chloride cylinder into a high-pressure assembly for heating, pressurizing and sintering; grinding and polishing the sintered sample to obtain the chalcopyrite electrode. The method solves the problems that chalcopyrite is fragile and poor in ductility, such factors as the electrochemical corrosion result are influenced by mineral paragenesis between chalcopyrite and other sulfides and much difficulty exists in processing and preparing the chalcopyrite electrode.

Description

technical field [0001] The invention belongs to chalcopyrite electrode preparation technology, in particular to a preparation method of chalcopyrite electrode. Background technique [0002] As an important mineral raw material for industrial copper smelting, chalcopyrite is divided into magmatic type, contact metasomatization type and hydrothermal type. Studying the electrochemical oxidation behavior of chalcopyrite in a hydrothermal system will help to understand the generation, composition and change process of magmatic deposits and hydrothermal deposits, and provide a theoretical basis for high-temperature hydrometallurgy. In nature, chalcopyrite is often symbiotic with other sulfide minerals, and the galvanic effect between symbiotic minerals will affect the electrochemical corrosion of chalcopyrite. In addition, chalcopyrite is brittle and has poor ductility, making it difficult to process into electrodes required for electrochemical research. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01N27/30
CPCG01N17/02G01N27/30
Inventor 李和平王璐颖梁文
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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