The Experiment Study on Making Ultrafine Superfine Nickel Powder by N₂H₄–KHB Reduction and H₂ Reduction

Abstract:

The N₂H₄–KHB reduction then CH₃OH watering and H₂ reduction system was used to make superfine nickel powder by using nickel sulfate as material.The superfine nickel powder of the specific surface area of the nickel powde being 4.24m²/g, spheric shape with grain size 0.5-0.9μm,nickel content being over 99.5%,The toll nichel recovery being over 99.5% was made on the condition of reaction temperature 60°C, reaction time 150-180min,pH 8.0-8.5,[Ni]=1.25M,N₂H₄/Ni=1.35（mol ratio）,sodium hexametaphosphate of 1.5‰ as additive，the dosage of KHB of 8.37×10^-3g/g Ni and washing by carbinol,reducing by H₂.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 677-680
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.677
• Online since: July 2011
• Authors: Shu Juan Dai, Yao Liu
• Keywords: Additive, H₂ Reduction, N₂H₄–khb, Nickel Sulfate, Superfine Nickel Powder

References

[1] Zhang guowan,Huang sheng sheng.Appliance and development of technology of making microfine powder.minerals and process of chemistry engineering,2001,pp.1-3.

[2] LI F.S..superfine powder technology.Beijing:nationaldefence industry press,2000.