蓝钨在回转还原炉中的氢还原  

Hydrogen Reduction of Tungsten Oxide Blue in the Rotary Reduction Furnace

作　　者：阳冬元[1] 

机构地区：[1]株洲硬质合金集团有限公司,株洲412000

出　　处：《硬质合金》2003年第1期16-19,共4页Cemented Carbides

摘　　要：在工业回转还原炉上 ,研究了其还原工艺参数与钨粉粒度之间的关系 ,并分析了钨粉结团的成因。在其他条件不变的情况下 ,随着还原温度的升高 ,还原时间的延长 ,或 H2 /WO3 -x比值的减小 ,钨粉的粒度增大。当炉管转动时 ,飞扬的粉末被快速排出的水蒸气氧化 ,重新被还原 ,并沉积在粉末表面 。In the Rotary reduction Furnace, the relation is studied between reduction process conditions and tungsten power particle size .The result is obtained that the tungsten power particle size is increased by rising the reduction temperature, or increasing the reduction time or reducing the ratio of H 2/WO 3-x , with other condition unchanged.when this furnace tube is rotating ,the raising up powder dust is oxided by the releasing water vapour, the oxiate is reduced by the hydrogen and deposited on the tungsten powder surface .the adhesion of W-grains leads to the powder agglomeration.

关 键 词：蓝钨 氢还原 回转还原炉 钨粒 粒度 工艺参数 

分 类 号：TF125[冶金工程—粉末冶金]