石煤提钒浸出过程研究现状与展望.pdf

34 1 稀 有 金 属 20 10 1 V ol134 N o1 1 CH IN ESE JOURNA L OF RARE M ETAL S Jan120 10 * 王明玉 , 王学文 中南大学冶金科学与工程学院, 湖南长沙 4 10083) : , , -, ; , , , , , , , , C l HC l 75% , 2 : ; ; ; do:i 10. 3969 / .j issn. 025 8- 7076. 2010. 01. 0 18 : TF841. 3 : A : 025 8- 7076 20 10) 01- 0090 - 08 Research Status andProspect ofVanadium Leaching Processes from Stone Coal * W ang M ingyu , W ang X uew en (S chool of M etallurg ical Sc ience and Eng ineering, C entral South Un iversity, Chang sha 4 10083, Ch ina) Abstract: V anad ium resources and the d istr ibu tion o f stone coa l in Ch ina w ere introduced. T he difficu lty and the key of stone coa l ex traction vanad ium w ere po inted out. The vanadium leaching process from stone coal w as rev iew ed, inc lud ing its leach ing condition, app lication c ircs and its respective m er its and fau lts. A lthough no- sa lt-roasting and d ilute ac id so lution leaching technology had the ad- vantages o f low cost, h igh vanad ium leaching effic iency as w e ll as low po llution, th is technology could no t be applied for a ll stone coa l. N o- salt-ro asting N aOH so lu tion leach ing techno logy, calc ium sa lt roasting extracting vanadium techno logy and h igh concen tra te acid leach ing technology had the character istics of low po llution and h igh vanadium leaching eff iciency. H ow ever, the high costs restricted the ir application. N aC l roasting ex tracting vanadium techno logy had good universa lity, h igh vanadium leach ing eff ic iency, and t