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Method and system for preparing nickel carbonyl powder through nickel-iron alloy

A technology of nickel-iron alloy and nickel carbonyl powder, which is applied in the field of metallurgy and can solve the problems of unfavorable nickel carbonyl synthesis and low nickel reactivity

Inactive Publication Date: 2015-12-23
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is that the nickel in the nickel-copper alloy has not been activated, and the reactivity of nickel is low, which is not conducive to the synthesis of nickel carbonyl.

Method used

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  • Method and system for preparing nickel carbonyl powder through nickel-iron alloy
  • Method and system for preparing nickel carbonyl powder through nickel-iron alloy
  • Method and system for preparing nickel carbonyl powder through nickel-iron alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Get the nickel-iron alloy of table 1 composition and carry out melting treatment after mixing iron sulfur, obtain nickel-iron melt (sulfur content is 0.5wt% in the nickel-iron melt), then gained nickel-iron melt is carried out atomization granulation treatment, obtains Nickel-iron alloy particles with an average particle size of 0.2 mm, and then contact the nickel-iron alloy particles with CO countercurrent to undergo a carbonylation reaction to generate a gaseous mixture containing nickel carbonyl, iron carbonyl and carbon monoxide. The carbonylation conditions are: pressure 7.5MPa, temperature 185 ° C, time 35h, the CO gas concentration is 90.5%, and then the gaseous mixture containing nickel carbonyl, carbonyl iron and carbon monoxide is sent to the condenser for condensation treatment to obtain a liquid mixture containing nickel carbonyl and carbonyl iron and carbon monoxide, and the carbon monoxide is returned to the oxo for continued use , and the obtained liquid m...

Embodiment 2

[0101] Get the nickel-iron alloy of table 1 composition and carry out melting treatment after mixing iron sulfur, obtain nickel-iron melt (sulfur content is 1.5wt% in the nickel-iron melt), then gained nickel-iron melt is carried out atomization granulation treatment, obtains Nickel-iron alloy particles with an average particle size of 0.5 mm, and then contact the nickel-iron alloy particles with CO countercurrent to undergo a carbonylation reaction to generate a gaseous mixture containing nickel carbonyl, iron carbonyl and carbon monoxide. The carbonylation conditions are: pressure 12.5MPa, temperature 135 ° C, time 46h, the CO gas concentration is 92%, and then the gaseous mixture containing nickel carbonyl, iron carbonyl and carbon monoxide is sent to the condenser for condensation treatment to obtain a liquid mixture containing nickel carbonyl and iron carbonyl and carbon monoxide, and the resulting carbon monoxide is returned to the oxo synthesis device to continue use, an...

Embodiment 3

[0103] Get the nickel-iron alloy of table 1 composition and carry out melting treatment after mixing sulfur iron, obtain nickel-iron melt (sulfur content is 3wt% in the nickel-iron melt), then gained nickel-iron melt is carried out atomization granulation process, obtains average Nickel-iron alloy particles with a particle size of 0.35 mm, and then contact the nickel-iron alloy particles with CO countercurrent to undergo a carbonylation reaction to generate a gaseous mixture containing nickel carbonyl, iron carbonyl and carbon monoxide. The carbonylation conditions are: pressure 15MPa, temperature 155 ° C, time 29h, The CO gas concentration is 90%, and then the gaseous mixture containing nickel carbonyl, iron carbonyl and carbon monoxide is sent to the condenser for condensation treatment to obtain a liquid mixture containing nickel carbonyl and iron carbonyl and carbon monoxide, and the carbon monoxide is returned to the oxo for continued use, while The resulting liquid mixtur...

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Abstract

The invention discloses a method and system for preparing nickel carbonyl powder through nickel-iron alloy. The method includes the steps that (1) the nickel-iron alloy and a sulfur-containing solid compound are melted to obtain nickel-iron melt after being mixed; (2) the nickel-iron melt is atomized and granulated to obtain nickel-iron alloy particles; (3) the nickel-iron alloy particles make contact with carbon monoxide to obtain a gaseous mixture and iron powder, and the gaseous mixture contains nickel carbonyl, carbonyl iron and carbon monoxide; (4) the gaseous mixture containing nickel carbonyl, carbonyl iron and carbon monoxide is condensed to obtain a liquid mixture and first carbon monoxide, and the liquid mixture contains nickel carbonyl and carbonyl iron; (5) the liquid mixture containing nickel carbonyl and carbonyl iron is subjected to rectifying treatment to obtain gaseous nickel carbonyl; and (6) the gaseous nickel carbonyl is decomposed to obtain the nickel carbonyl powder and second carbon monoxide. The method can improve the utilization value of the nickel-iron alloy and meanwhile reduce production cost of the nickel carbonyl powder.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular, the invention relates to a method and a system for preparing carbonyl nickel powder by utilizing nickel-iron alloy. Background technique [0002] In recent years, with the depletion of high-grade nickel sulfide ore and the rapid development of the domestic stainless steel industry, low-grade laterite nickel ore has become the main raw material for the production of ferronickel products. In order to solve the problem of rational utilization of laterite nickel ore, using laterite nickel ore as raw material and coal powder as reducing agent, the iron-nickel oxide in the ore is reduced into metallic iron and metallic nickel by direct reduction method, and then passed through submerged arc furnace or smelting The sub-furnace enriches the nickel into the nickel-iron alloy. At present, the industrial application of nickel-iron alloy, its research only stays at the level of using it as...

Claims

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Application Information

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IPC IPC(8): B22F9/08B22F9/30
Inventor 宋文臣王静静李红科曹志成薛逊
Owner SHENWU TECH GRP CO LTD
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