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Preparation method of pyrite electrode

A pyrite and electrode technology, which is applied to battery electrodes, circuits, iron sulfide, etc., can solve the problems of poor ductility, difficulty in processing and preparing pyrite electrodes, and affecting the results of electrochemical corrosion of pyrite.

Inactive Publication Date: 2016-10-26
INST OF GEOCHEM CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of a pyrite electrode, so as to solve the brittleness of pyrite 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 pyrite and other factors, and the existing pyrite electrodes are difficult to process and prepare technical problems

Method used

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Examples

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preparation example Construction

[0031] A kind of preparation method of pyrite electrode, it comprises

[0032] Step 1, select pyrite particles;

[0033] Step 2, drying the selected pyrite particles for subsequent use after cleaning;

[0034] Step 3. Weigh 0.6-0.8 g of the dried pyrite, grind it into a powder of more than 200 mesh, press it into a pyrite cylinder under the condition of 0.5 MPa in a powder tablet press and wrap it with tantalum foil;

[0035] Step 4. Grinding the sodium chloride into a powder of more than 200 meshes, and drying in an oven at 150° C. for 2 hours;

[0036] Step 5, prepare the sodium chloride cylinder containing pyrite cylinder with the sodium chloride powder after drying;

[0037] Step 6, putting the sodium chloride cylinder containing the pyrite cylinder into the high-pressure assembly block, and performing heating and pressure sintering;

[0038] Step 7: Grinding and polishing the sintered sample to obtain a pyrite electrode.

[0039] The method for selecting pyrite partic...

Embodiment example 1

[0055] Break the rock containing pyrite into 80-100 mesh, select the pyrite particles with a purity greater than 95% under the binocular lens, ultrasonically clean with acetone for 10-20min, then clean with absolute ethanol, and then place Dry in an oven for 5-30 minutes at a temperature of 30-60°C for later use. Weigh 0.8g of chalcopyrite particles, grind it into a powder of more than 200 mesh, press it into a cylinder under the condition of 0.5MPa in a powder tablet press, and wrap it with tantalum foil. Weigh sodium chloride and grind it into a powder of more than 200 mesh, place it in an oven at a temperature of 150°C for 2 hours, and then dry it as a pressure transmission medium for later use. Take by weighing 0.67g sodium chloride, be pressed into cylindrical shape in powder tablet press, then pyrite cylinder is placed on the middle position of sodium chloride cylinder upper surface, pour into 0.75g sodium chloride to cover again, in The powder was compacted under the c...

Embodiment example 2

[0061] Break the rock containing pyrite into 80-100 mesh, select the pyrite particles with a purity greater than 95% under the binocular lens, ultrasonically clean with acetone for 10-20min, then clean with absolute ethanol, and then place Dry in an oven for 5-30 minutes at a temperature of 30-60°C for later use. Weigh 0.8g of chalcopyrite particles, grind it into a powder of more than 200 mesh, press it into a cylinder under the condition of 0.5MPa in a powder tablet press, and wrap it with tantalum foil. Weigh sodium chloride and grind it into a powder of more than 200 mesh, place it in an oven at a temperature of 150°C for 2 hours, and then dry it as a pressure transmission medium for later use. Take by weighing 0.67g sodium chloride, be pressed into cylindrical shape in powder tablet press, then pyrite cylinder is placed on the middle position of sodium chloride cylinder upper surface, pour into 0.75g sodium chloride to cover again, in The powder was compacted under the c...

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Abstract

The invention discloses a preparation method of a pyrite electrode. The preparation method comprises the following steps: selecting pyrite particles; washing and drying the selected pyrite particles for standby use; weighing 0.6-0.8 g of the dried pyrite, grinding the dried pyrite into powder with more than 200 meshes, pressing the powder into pyrite cylinders under the condition of 0.5 MPa in a powder pressing machine, and then packaging the pyrite cylinders with tantalum foils; grinding sodium chloride into powder with more than 200 meshes, putting in a drying oven for drying for 2 hours at the temperature of 150 DEG C; using the dried sodium chloride powder to prepare sodium chloride cylinders containing the pyrite cylinders; putting the sodium chloride cylinders containing the pyrite cylinders into high-pressure assembly blocks, and carrying out warming pressure sintering; and polishing a sample after sintering is completed to obtain the pyrite electrode. The preparation method solves the technical problems that an existing pyrite electrode is extremely difficult to process and prepare caused by the facts that pyrite is crisp and poor in ductility and pyrite is symbiotic with other sulfide minerals to influence electrochemical corrosion results of pyrite in the prior art.

Description

technical field [0001] The invention belongs to the preparation technology of pyrite electrodes, in particular to a preparation method of pyrite electrodes. Background technique [0002] As the most abundant metal sulfide on the earth, pyrite exists widely in the crust and seabed sedimentary rocks. Studying the electrochemical corrosion behavior of pyrite in a hydrothermal system helps to understand the generation, composition and change process of hydrothermal deposits, and provides a theoretical basis for high-temperature hydrometallurgy and mineral processing processes. The cycle of elements and sulfur, mining and the protection of the natural environment are closely related. [0003] Natural pyrite is often symbiotic with chalcopyrite, sphalerite, galena and other sulfide minerals, and the galvanic chemical interaction between the symbiotic minerals will interfere with the electrochemical corrosion process of pyrite, which has a great impact on the experimental results....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12H01M4/58H01M4/1397
CPCC01G49/12H01M4/1397H01M4/5815Y02E60/10
Inventor 梁文王璐颖尹远李和平
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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