摘要
本文重点对包头转炉渣进行了铌矿物的缓冷催化结晶研究。当应用合理的结晶催化剂和缓冷制度对含铌渣进行处理时,渣中铌晶化率可达到80%左右,铌矿物平均粒度由3.78μm 长大到48.05μm,增大约13倍,达到了机械选矿的粒度要求。由光学显微镜、X 射线粉晶衍射仪、扫描电子显微镜及能谱仪等手段研究表明,缓冷渣中的含铌矿物为铌-红钛锰矿,其Nb_2O_5 含量为25—57%。此外,渣中尚有锰铁橄榄石和玻璃相。
The paper mainly described the slow-cooling accelerating crystalliza-tion of Nb-mineral in Baotou converter slag.When reasonable crystal-lizing accelerant and slow-cooling system was used,the crystal transfor-mation rate of Nb in the slag could approximate to 80%,the mean cry- (Cont.from p.38)stal size of Nb-mineral could be enlarged from 3.78μm to 48.05μm,whichis 13 times as large as the one in the raw slag,and reached the size re-quired by the mechanical processing.By means of optical microscope,X-ray pow...
出处
《有色金属》
CSCD
1991年第2期35-38,43,共5页
Nonferrous Metals
关键词
工艺矿物学
铌矿物
铌-红钛锰矿
缓冷催化结晶
Industrial mineralogy
Nb-mineral
Niobium-pyrophanite
Slow-cooling accelerating crystallizing
