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Method for producing nickel carbonyl powder from nickel hydroxide

A technology of nickel hydroxide and nickel carbonyl powder, which is applied in the field of powder metallurgy, can solve the problems of limited production cost of carbonyl nickel powder, low degree of automation, and high raw material cost, and achieve high roasting and synthesis efficiency, simple production process, and low roasting temperature Effect

Active Publication Date: 2013-06-05
吉林卓创新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the method of domestic production of nickel carbonyl powder is high-pressure method. On the one hand, the reaction temperature is relatively high (200 ° C ~ 230 ° C), and secondly, the requirements for the reaction equipment are high, and the reaction is intermittent and the degree of automation is low. , these problems limit the production cost of nickel carbonyl powder to a large extent
[0004] At present, the raw materials for the production of nickel carbonyl powder are copper-nickel alloys containing more than 55% nickel or pure nickel oxide. The cost of raw materials is high and it is not easy to purchase.

Method used

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  • Method for producing nickel carbonyl powder from nickel hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Nickel hydroxide raw material composition:

[0028] Ni

[0029] Add nickel hydroxide raw material with the speed of 1000kg per hour in the rotary roaster, the raw material moisture content is 50%, the reaction kettle rotation rate is set as 1 rev / min, the material residence time is 1.5 hours, feed hot gas and air during the reaction, The reaction temperature is controlled at 450°C; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace, the reaction temperature is 350°C, the reaction pressure is 0.06kpa, and the reduction is carried out under the hydrogen atmosphere to generate elemental active nickel; the elemental active nickel is passed through the screw conveyor Send it into the rotating nickel carbonyl synthesis reactor for oxo synthesis reaction with CO gas, the reaction time is 18 hours, the reaction pressure is 0.005MPa, CO and the material are in countercurrent contact; the synthesized nickel carbonyl gas is transpor...

Embodiment 2

[0031] Nickel hydroxide raw material composition:

[0032] Ni

[0033] Add the nickel hydroxide raw material with the speed of 1000kg per hour in the rotary roaster, the raw material moisture content is 60%, the reaction kettle rotation rate is set as 1.5 rev / min, the material residence time is 1 hour, feed hot gas and air during the reaction, The reaction temperature is controlled at 450°C; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace, the reaction temperature is 400°C, the reaction pressure is 0.1kpa, and the reduction is carried out under the hydrogen atmosphere to generate elemental active nickel; the elemental active nickel passes through the screw conveyor Send it into the rotating nickel carbonyl synthesis reactor for oxo synthesis reaction with CO gas, the reaction time is 30 hours, the reaction pressure is 0.005MPa, CO and the material are in countercurrent contact; the synthesized nickel carbonyl gas is transport...

Embodiment 3

[0035] Nickel hydroxide raw material composition:

[0036] Ni

[0037] Add nickel hydroxide raw material with the speed of 1000kg per hour in the rotary roaster, the raw material moisture content is 50%, the reaction kettle rotation rate is set as 1 rev / min, the material residence time is 1.5 hours, feed hot gas and air during the reaction, The reaction temperature is controlled at 450°C; the nickel oxide obtained by the reaction is transported to the hydrogen reduction furnace, the reaction temperature is 400°C, the reaction pressure is 0.1kpa, and the reduction is carried out under the hydrogen atmosphere to generate elemental active nickel; the elemental active nickel passes through the screw conveyor Send it into the rotating nickel carbonyl synthesis reactor for oxo synthesis reaction with CO gas, the reaction time is 24 hours, the reaction pressure is 0.01MPa, CO and the material are in countercurrent contact; the synthesized nickel carbonyl gas is transported t...

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Abstract

The invention relates to a method for producing nickel carbonyl powder from nickel hydroxide, belonging to the technical field of powder metallurgy. The method comprises the following steps: adding nickel hydroxide into a rotary roasting furnace, removing water at high temperature, and roasting to obtain nickel oxide; adding the oxide into a hydrogen reducing furnace to perform reduction, thereby generating simple substance active nickel; adding the simple substance active nickel into a nickel carbonyl synthesis reactor to make counterflow contact with CO, and reacting to generate nickel carbonyl gas; delivering the nickel carbonyl gas to a nickel carbonyl decomposer by a blower, and delivering generated nickel carbonyl residues into a nickel carbonyl treater to perform passivating treatment; and decomposing the nickel carbonyl gas in the nickel carbonyl decomposer to produce the nickel carbonyl powder. The invention does not need to perform extra treatment on the raw material, and has the advantages of mild reaction conditions, simple technique, high production safety, low cost, high synthesis efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, and in particular relates to a method for producing nickel carbonyl powder by using nickel hydroxide as a raw material. Background technique [0002] Carbonyl nickel powder is mainly used in nickel-cadmium, nickel-hydrogen batteries, filters, military industry, binders for high-density and high-melting point materials, powder metallurgy additives, precision alloys, special steel, stainless steel electrodes, petrochemical catalysts and new compounds, Getters for electronic picture tubes, high-frequency or ultra-high-frequency magnetic materials, etc. Nickel carbonyl is a coordination compound formed by transition metal nickel and carbon monoxide ligands. Nickel carbonyl decomposes under certain temperature conditions to form nickel carbonyl powder. [0003] Carbonyl nickel refining process is the most advanced nickel extraction technology. It has the advantages of simple process, low e...

Claims

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Application Information

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IPC IPC(8): C01G53/02
Inventor 孟庆伟唐思琪雷福伟郑难忘丁金华于得明齐艳
Owner 吉林卓创新材料有限公司
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