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Fabrication method of pyrrhotite electrode

A pyrrhotite and electrode technology, applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve problems such as affecting the results of electrochemical corrosion of pyrrhotite, poor ductility, and brittleness of pyrrhotite

Inactive Publication Date: 2016-12-07
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 pyrrhotite electrode, so as to solve the problem of brittleness of pyrrhotite in the prior art, poor ductility and symbiosis of pyrrhotite and other sulfide minerals. The role of the primary battery will affect the electrochemical corrosion results of pyrrhotite and other factors, and the existing pyrrhotite 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 preparation method for a pyrrhotite electrode, comprising:

[0032] Step 1, select the pyrrhotite particles;

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

[0034] Step 3. Weigh 0.5-0.8 g of the dried pyrrhotite particles, grind it into a powder of more than 200 mesh, and press the pyrrhotite powder into pyrrhotite with a pressure of 0.5 MPa in a powder tablet press Mine cylinder and wrapped with tantalum foil;

[0035] Step 4. After grinding the sodium chloride into a powder of more than 200 mesh, place it in an oven and dry it at 150°C for 2 hours, and use it as a pressure transmission medium for later use;

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

[0037] Step 6, put the sodium chloride cylinder containing the pyrrhotite cylinder obtained in step 5 into the high-pressure assembly block, and carry out heating and pressure sintering;

[...

Embodiment example 1

[0055] Break the rock containing pyrrhotite into 80-100 meshes, select pyrrhotite particles with a purity greater than 95% under the binocular lens, ultrasonically clean them with acetone for 10-20 minutes, and then clean them with absolute ethanol. Put it in an oven at 30-60°C for 5-30 minutes and then dry it for later use. Weigh 0.8g of pyrrhotite 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. Weigh 0.67g of sodium chloride, press it into a cylinder in a powder tablet press, then place the pyrrhotite cylinder in the middle of the upper surface of the sodium chloride cylinder, and then pour 0.75g of sodium chloride powder to cover it , compacted under the condit...

Embodiment example 2

[0061] Break the rock containing pyrrhotite into 80-100 meshes, select pyrrhotite particles with a purity greater than 95% under the binocular lens, ultrasonically clean them with acetone for 10-20 minutes, and then clean them with absolute ethanol. Place in an oven at a temperature of 30-60°C for 5-30 minutes and then dry for later use. Weigh 0.8g of pyrrhotite 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 the pyrrhotite cylinder is placed on the middle position of the sodium chloride cylinder upper surface, pour into 0.75g sodium chloride to cover again, Comp...

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PUM

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Abstract

The invention discloses a fabrication method of a pyrrhotite electrode. The fabrication method comprises the following steps of picking out pyrrhotite particles; cleaning and drying the pyrrhotite particles; grinding 0.5-0.8g of pyrrhotite particles to powder with 200 meshes or over, pressing the pyrrhotite powder to a pyrrhotite cylinder with a pressure of 0.5MPa in a powder pressing machine, and wrapping the pyrrhotite cylinder with a tantalum foil; grinding sodium chloride to powder with 200 meshes or over, placing the powder in a baking oven, and drying the powder for 2 hours at a temperature of 150 DEG C; fabricating a sodium chloride cylinder internally provided with the pyrrhotite cylinder from the dried sodium chloride; placing the sodium chloride cylinder internally provided with the pyrrhotite cylinder in a high-voltage assembly block for sintering in a temperature raising and pressurizing way; and grinding and polishing the sintered sample, thereby obtaining the pyrrhotite electrode. By the fabrication method, the technical problems that the pyrrhotite electrode is brittle and is poor in extensibility, the pyrrhotite electrode and other sulfide minerals coexist, a chemical corrosion effect of the pyrrhotite electrode will be affected by an effect of an original battery among paragenetic minerals and the existing pyrrhotite electrode is difficult to process and prepare are solved.

Description

technical field [0001] The invention belongs to the preparation technology of pyrrhotite electrodes, in particular to a preparation method of pyrrhotite electrodes. Background technique [0002] Pyrrhotite is an iron sulfide of the red arsenic-nickel ore family, and its sulfur content is as high as 40%. It is an important raw material for the manufacture of sulfuric acid and carbon disulfide. The structure of pyrrhotite is hexagonal like that of pyrrhotite, and some iron positions are vacant. Studying the electrochemical corrosion behavior of pyrrhotite in a hydrothermal system will help to understand the generation, composition and change process of hydrothermal deposits, and provide a theoretical basis for mineral processing. [0003] Natural pyrrhotite often coexists with sulfide minerals such as pyrite, chalcopyrite, and arsenopyrite. The galvanic chemistry between the paragenetic minerals will interfere with the electrochemical corrosion process of pyrrhotite and affe...

Claims

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Application Information

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IPC IPC(8): H01B13/00
CPCH01B13/00
Inventor 梁文王璐颖尹远李和平
Owner INST OF GEOCHEM CHINESE ACADEMY OF SCI
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