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Method for passivating treatment of superfine nickel carbonyl powder using carbonic oxide

A carbon monoxide and passivation treatment technology, applied to the field of carbon monoxide passivation treatment of ultrafine carbonyl nickel powder, can solve problems such as increased production cost, waste of resources, etc., and achieves the effects of easy recovery, reduced production cost, and simplified preparation process

Inactive Publication Date: 2005-04-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will undoubtedly cause waste of resources and increase production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 100 grams of newly prepared ultrafine nickel carbonyl powder with a particle size of 1-10 μm is placed in a conical passivator after being cooled to room temperature, and carbon monoxide gas at room temperature is introduced, the pressure is controlled at 0.04MPa, and the flow rate is 2L / min , passivation treatment for 2 hours. The oxygen content of ultrafine carbonyl nickel powder after passivation is 0.14%, and the bulk ratio is 0.67g / cm 3 .

Embodiment 2

[0016] 100 grams of newly prepared ultra-fine carbonyl nickel powder with a particle size of 100nm-1μm is placed in a conical passivator after being cooled to room temperature, and carbon monoxide gas at room temperature is introduced, the pressure is controlled at 0.08MPa, and the flow rate is 2L / min. Passivation treatment for 2 hours. The oxygen content of ultra-fine carbonyl nickel powder after passivation is 0.15%, and the bulk ratio is 0.52g / cm 3 .

Embodiment 3

[0018] 100 grams of newly prepared ultrafine carbonyl nickel powder with a particle size of 50-100 μm is placed in a conical device after being cooled to room temperature, and carbon monoxide gas at room temperature is introduced, the pressure is controlled at 0.14 MPa, and the flow rate is 2 L / min. Passivation Process for 2 hours. The oxygen content of the ultrafine carbonyl nickel powder after passivation is 0.16%, and the bulk ratio is 0.31g / cm 3 .

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Abstract

The invention discloses method which is used the carbon monoxide gas to passivate superfine carbonyl nickel powder. The method is entered the carbon monoxide gas with room temperature to the single passivation machine to passivate the superfine carbonyl nickel powder whose granularity is from twenty nanometer to ten millimeter. The invention avoids the gas separating operation, and the purify operation of the carbon monoxide gas, simplifies the production process, and reduces the cost of the production.

Description

technical field [0001] The invention relates to a method for carbon monoxide passivation treatment of superfine nickel carbonyl powder. Background technique [0002] Ultrafine carbonyl nickel powder has great volume effect and surface effect, and has many special properties on the surface in terms of magnetism, internal pressure, thermal resistance, light absorption and chemical activity, etc., and is widely used in energy, electronics, aerospace and nuclear industries And other fields, not only play an irreplaceable role in the high-tech field, but also bring vigor and vitality to traditional industries. Due to the large specific surface area and high chemical activity of ultra-fine nickel carbonyl powder, agglomeration is very easy to occur during the preparation process, and it will cause deep oxidation or even combustion when exposed to the air, which will have a great impact on the fluidity and serviceability of the material. Therefore, In order to ensure the stability...

Claims

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Application Information

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IPC IPC(8): B22F9/30
Inventor 齐彦兴索继栓钱广雒旭吕高孟杨军曹洲宏朱秉泰夏春谷
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI