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Preparation method of carbonyl ferronickel alloy powder

A carbonyl-nickel-iron and carbonyl-nickel technology is applied in the field of preparation of carbonyl-nickel-iron alloy powder, which can solve the problems of frequent maintenance and replacement of evaporators and pipelines, and the reduction of the stability of raw gas components, so as to improve the stability and maintain the working state. Effect

Inactive Publication Date: 2016-09-21
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, the gas feed of nickel carbonyl and iron carbonyl needs to rely on the heating at the bottom of each evaporator. Local overheating will cause partial decomposition of carbonyls and deposit at the bottom of the evaporator. At the same time, the gas delivery pipeline needs to be heated, resulting in the stability of the raw gas composition. performance is reduced, and evaporators and piping require frequent maintenance and replacement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In the production of nickel-iron carbonyl alloy powder, carbon monoxide at 50~60°C and a return flow rate of 870g / min is passed into the carbonyl nickel evaporator, and carbon monoxide at 75~90°C and a return flow rate of 2080g / min is passed into the carbonyl iron evaporator. The carbonyl iron liquid: CO gas mass ratio and carbonyl nickel liquid: CO gas mass ratio are both 3:1, the production capacity is 80kg / h, the iron content in the product is 68.23%, the nickel content is 30.24%, and the others are impurity elements.

Embodiment 2

[0017] In the production of nickel-iron carbonyl alloy powder, carbon monoxide at 50~60°C and a return flow rate of 550g / min is passed into the carbonyl nickel evaporator, and carbon monoxide at 75~90°C and a return flow rate of 2000g / min is passed into the carbonyl iron evaporator. Iron liquid: CO gas mass ratio and carbonyl nickel liquid: CO gas mass ratio are both 2:1, the production capacity is 96kg / h, the iron content in the product is 76.68%, the nickel content is 22.30%, and the others are impurity elements.

Embodiment 3

[0019] In the production of nickel-iron carbonyl alloy powder, carbon monoxide at 50~60°C and a return flow rate of 1300g / min is passed into the carbonyl nickel evaporator, and carbon monoxide at 75~90°C and a return flow rate of 1400g / min is passed into the carbonyl iron evaporator. Iron liquid: CO gas mass ratio and carbonyl nickel liquid: CO gas mass ratio are both 5:1, the production capacity is 64kg / h, the iron content in the product is 51.3%, the nickel content is 47.87%, and the others are impurity elements.

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PUM

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Abstract

The invention discloses a preparation method of carbonyl ferronickel alloy powder. The method comprises the following steps: respectively introducing CO gas into a carbonyl nickel evaporator and a carbonyl iron evaporator, uniformly mixing the carbonyl-nickel-entrained CO gas and carbonyl-iron-entrained CO gas, introducing the gas mixture into a decomposer, and carrying out thermal decomposition, wherein the temperature of the CO gas introduced into the carbonyl nickel evaporator is 50-60 DEG C, and the temperature of the CO gas introduced into the carbonyl iron evaporator is 75-90 DEG C. The preparation method can enhance the stability of the mixed raw gas components and effectively maintain the operating state of the evaporators and feed pipeline.

Description

technical field [0001] The invention relates to a method for preparing carbonyls, in particular to a method for preparing carbonyl nickel-iron alloy powder. Background technique [0002] Carbonyl nickel-iron alloy powder is an alloy powder that can be used in the fields of cemented carbide, powder metallurgy, microwave-absorbing materials and magnetic materials. In the currently disclosed methods for preparing nickel-iron carbonyl powder, two evaporators are used to respectively heat the nickel carbonyl liquid and the carbonyl iron liquid, and then mix them with CO gas to decompose them. In this method, the gas feed of nickel carbonyl and iron carbonyl needs to rely on the heating at the bottom of each evaporator. Local overheating will cause partial decomposition of carbonyls and deposit at the bottom of the evaporator. At the same time, the gas delivery pipeline needs to be heated, resulting in the stability of the raw gas composition. The performance is reduced, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/16C01G53/02
CPCC01G49/16C01G53/02
Inventor 杨志强王芳镇肖冬明江龙孟德龙李登瑞江林王大窝陈菊华梁涛宋晓红
Owner JINCHUAN GROUP LIMITED
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