有色金属科学与工程Issue(3)：44-49,6.DOI:10.13264/j.cnki.ysjskx.2014.03.008
铋钼混合矿低温熔炼新工艺研究
Low-temperature smelting process of a bismuth-molybdenum ore
摘要
Abstract
In view of shortcomings in current bismuth-molybdenum ores ’ floating and smelting technologies, such as complex operation in ore-dressing, large consumption of floating reagents and incomplete separation of bismuth and molybdenum, a low-temperature smelting on bismuth-molybdenum ores is proposed so that the crude bismuth is produced after low-temperature smelting, and molybdenum comes into the solution in form of molybdate. Then molybdenum trioxide can be recycled which is produced by hydrothermal method. On the basis of thermodynamic analysis, effects of molten salt composition, salt amount, smelting temperature, reaction composition and excessive multiples of active carbon on the molten salt smelting of bismuth-molybdenum ores are investigated. The optimum conditions is determined as follows: w(NaCl) /w (NaCl+Na2CO3)=20 %, smelting temperature 850 ℃, w(NaCl+Na2CO3) /w(bismuth-molybdenum ores)=2, reaction time 1 h, w(activated carbon) /w (theory)=2. Two comprehensive tests under above-mentioned optimum conditions are conducted to find out that the direct recovery rate of bismuth is 98.12 % and 96.59 %,and the average grade of crude bismuth is 96.62 % and 98.87 %.关键词
低温熔炼/铋钼混合矿/铋冶炼Key words
low-temperature smelting/bismuth-molybdenum ores/smelting of bismuth分类
矿业与冶金引用本文复制引用
张绪亮,刘宗强,杨建英,杨建广,李焌源,邓自祥..铋钼混合矿低温熔炼新工艺研究[J].有色金属科学与工程,2014,(3):44-49,6.基金项目
湖南有色集团-中南大学有色金属研究基金资助项目（YSZN 2013YJ03）；国家自然科学基金资助项目（51174237）；国家科技重大专项子课题（2010X07212-008）；教育部“新世纪优秀人才计划”项目 （）
