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Metallurgy method of metal sulfide M1S

A metal sulfide and sulfide technology, applied in the field of metallurgy, can solve the problems of cathode deposition inclusion, low solubility, increased energy consumption, etc., and achieve the effects of short production process, less pollution, and high added value of products

Inactive Publication Date: 2009-12-09
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For calcium chloride, barium chloride, etc. recommended in the patent application (patent application number 200610092501.2), because the solubility of calcium sulfide and barium sulfide is small, it is easy to deposit on the cathode to form inclusions
Appropriately increasing the electrolysis temperature will be beneficial to the dissolution of calcium sulfide, barium sulfide, etc., but this measure will not only increase energy consumption, but also lead to easier discharge of graphite anode to generate CS 2

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Commercially available MoS 2 The powder is about 0.5-2g, pressed by mechanical pressure at 0.5-10MPa into a sulfide test piece with a diameter of about 20mm and a thickness of 0.5-1.5mm, dried in the air at 200°C for 0.5-8 hours, and the porosity of the obtained sample is 20 ~80%. The sulfide test piece and the conductive cathode current collector are combined as the working electrode, the graphite rod is used as the counter electrode, and the graphite electrode is separated from the gas phase of the electrolytic cell by a quartz tube to export the anode product. Molten KCl+NaCl is used as the electrolyte, in an argon environment, the temperature is 680 and 750°C, and the electrolysis voltage is controlled at 1.2-2.4V. After 30, 60, 120, 180, and 300 minutes of electrolysis respectively, the metal product was taken out and washed and dried with water. The SEM of the obtained metal product molybdenum was as follows: figure 1 shown by figure 1 It can be seen that the o...

Embodiment 2

[0048] About 2g of commercially available FeS blocks, with a porosity of basically 0, are combined with a conductive cathode current collector as a working electrode, and a graphite rod is used as a counter electrode, and a quartz tube is used to separate the graphite electrode from the gas phase of the electrolytic cell to export the anode product . Using molten KCl+NaCl as the electrolyte, in an argon atmosphere, the temperature is 680°C, and the electrolysis voltage is controlled at 1.2-2.4V. After electrolysis for 30, 60, 120, 180, and 300 minutes respectively, the metal product is taken out and washed and dried to obtain porous iron with a basic particle size of 5-50 microns. The XRD of the obtained product iron is as follows figure 2 shown by figure 2 It can be seen that the obtained iron is pure metal; the anode product is gaseous elemental sulfur.

Embodiment 3

[0050] Ti will be weighed proportionally 2 S 3 The powder and FeS powder are about 0.5-2g, mixed uniformly by mechanical ball milling, and then pressed at 0.5-10MPa to form a sulfide test piece with a diameter of about 20mm, and dried in the air at 200°C for 0.5-8 hours. The porosity of the obtained sample is 20- 80%. The sulfide test piece and the conductive cathode current collector are combined as the working electrode, the graphite rod is used as the counter electrode, and the graphite electrode is separated from the gas phase of the electrolytic cell by a quartz tube to export the anode product. Using molten KCl+KF as the electrolyte, in an argon atmosphere, the temperature is 650°C, and the electrolysis voltage is controlled at 2.4-3.2V. After 240-900 minutes of electrolysis, the metal product is taken out and washed and dried to obtain a TiFe alloy. The anode product is gaseous elemental sulfur.

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Abstract

The invention relates to a metallurgy method of metal sulfide M1S; in the method, ionic liquid M2X is taken as electrolyte, metal sulfide is taken as a solid-state cathode, or the powder of metal sulfide added with electronic conduction matters or lumps and metal current collectors are compounded for being used as the solid-state cathode, graphite or inertia anode is taken as an anode, the electrolyte is carried out in inert atmosphere or air, the electrolyte temperature is controlled at 120-780 DEG C, the electrolyte time is controlled to lead the electrolysis electric quantity to reach theory needed theory electric quantity and above, the metal sulfide is decomposed into metal products and simple substance S by electrochemistry. The method has simple process, low energy consumption, high additional value of the product, wherein the prepared metal materials such as tantalum powder, tantalum, porous iron and other nanometer metal powder materials or superfine metal powder materials or porous metal materials can be directly used as hydrogen storage materials, battery materials, capacitor materials and the like or as the raw material for powder metallurgy and the like.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a metallurgical method for metal sulfides. Background technique [0002] Metal sulfide is another important basic mineral resource next to the abundance of oxides, and many commonly used non-ferrous metal mineral resources are even mainly sulfide. For example, copper sulfide ore accounts for 87%; lead-zinc ore mainly includes lead-zinc sulfide, lead sulfide, zinc sulfide and other ores; copper-nickel sulfide ore accounts for 84% of the total nickel reserves, and there are also some rare metal ores such as molybdenite Ore, tin ore, tellurium ore, etc. all belong to this type. However, the traditional metallurgical process of high-temperature calcination and thermal reduction of sulfide often has a long process, high energy consumption, and involves SO 2 and CO 2 Lots of emissions. Therefore, the development of new technologies for metal sulfide ore smelting has always been paid atten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/04C25B1/00
Inventor 金先波陈政
Owner WUHAN UNIV
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