摘要
针对攀钢实际，首次采用钒渣浸出钒液为原料，经除杂、水解沉淀和高温煅烧后制得VO2粉末。试验最佳条件为：除铬剂Z加入量与溶液中总铬量之比为22．86：1；除硅剂X加入量与溶液中总硅量之比为3．2：1；水解沉钒时溶液pH值控制在4．5-5．0之间；循环洗涤5次，煅烧温度1000℃，恒温时间60min，氩气流量4L／min。与已有制备方法相比，该方法原料来源广泛，成本较低，工艺简单、适用，易于实现产业化。
Based on the actual state of PZH steel, VO2 powder was prepared using the leach solution of vanadium- bearing slag as raw material for the first time. The preparing process includes removing the impurity of leach solution, hydrolytic precipitation and calcining the precipitated material at high temperature. The optimal conditions as follows： the ratio of dechromisation agent Z to total chrome is 22.86： 1, and the desiliconisation agent X to total silica is 3.2： 1, pH = 4.5 - 5.0, circulating wash 5 times, calcining at 1 000 ℃, the time of constant temperature is 60 min,argon gas flow is 4 L/min. Compared with other methods, this preparing method is of more widely raw materials source and lower cost. The process is also simple and easy to realize industrial turn.
出处
《钢铁钒钛》
CAS
2006年第1期59-63,共5页
Iron Steel Vanadium Titanium
关键词
二氧化钒
钒渣
浸出
除杂
水解沉淀
煅烧
VO2
vanadium - bearing slag
leaching
impurities removal
hydrolytic precipitation
calcination
