纳米钨粉生产工艺研究  

On production technology of nano-W powder

作　　者：朱诗秀 

机构地区：[1]江西钨业集团赣州华兴钨制品有限公司,江西赣州341000

出　　处：《有色金属科学与工程》2012年第3期36-39,共4页Nonferrous Metals Science and Engineering

基　　金：江西钨业集团公司2012年科技创新基金项目(JW201205)

摘　　要：探讨以APT为原料生产纳米钨粉的工艺流程及生产工艺.以APT为原料在高温、湿氢、弱还原的条件下制取优质紫钨;紫钨经还原炉在工艺条件:还原温度650～750℃、装舟量0.25～0.50 kg、推舟速度10～20 min/舟、氢气流量为40～60 m3/h、氢气露点-70～-60℃下可制备BET平均粒径为0.03～0.06μm的纳米级超细钨粉,并对影响紫钨还原的各种工艺参数进行了分析.结果表明:在合适的工艺条件下传统工艺也可以制备出纳米级超细颗粒钨粉.This article studies the production technology and process of nano-W powder out of APT. Purple tung- sten oxide of good quality is produced using APT as raw materials under the conditions of high temperature, humid hydrogen and mild reduction. Nano-W superfine powder with BET average grain size from 0.03 to 0.06μm was prepared from purple tungsten oxide in the reduction furnace with the following technology conditions： reduction temperature 600-750 ℃, loading weight 0.25-0.50 kg, pushing speed 10-20 min, hydrogen flow rate 40-60 m3/h, and hydrogen dew point -70--60 ℃. Technology parameters affecting the reduction of purple tungsten oxide were also analyzed. The results demonstrate that nano-W powder can be prepared from AtrF by conventional technology under appropriate technological conditions.

关 键 词：APT 弱氢还原 紫钨 还原工艺 纳米钨粉 

分 类 号：TG146.4[一般工业技术—材料科学与工程] TF841.1[金属学及工艺—金属材料]