METHOD FOR PREPARING ULTRAFINE TUNGSTEN CARBIDE POWDER
摘要
<p>A method for preparing ultrafine powder of tungsten carbide using ultrafine tungsten powder and carbon black as raw materials is provided. The following steps are included: (l) passivation of the ultrafine tungsten powder: passivating the ultrafine tungsten powder under pure carbon dioxide; (2) carbon addition: mixing the ultrafine tungsten powder with carbon black powder after applying cooling water and inert gases; (3) carbonization: synthesizing the bulk tungsten carbide powder at high temperature in a carbonizing stove; (4) crushing and sieving: crushing the bulk tungsten carbide powder, cooling and sieving to obtain the ultrafine powder of tungsten carbide.</p>
申请公布号
WO2011057462(A1)
申请公布日期
2011.05.19
申请号
WO2009CN76278
申请日期
2009.12.30
申请人
JIANGXI RARE EARTH AND RARE METALS TUNGSTEN GROUPCORPORATION;WEI, BAIWAN;LIN, ZHAO;LI, ZHIFENG;ZOU, ANSHI;WU, YI
发明人
WEI, BAIWAN;LIN, ZHAO;LI, ZHIFENG;ZOU, ANSHI;WU, YI