从难选镍钼矿中回收钼的研究  

Study on Recovering Molybdenum from Rocky-select Ni-Mo Ores

作　　者：皮关华[1] 徐徽[1] 陈白珍[1] 石西昌[1] 李俊丽[1] 

机构地区：[1]中南大学,湖南长沙410083

出　　处：《湖南有色金属》2007年第1期9-12,共4页Hunan Nonferrous Metals

摘　　要：文章针对从难选镍钼矿中提取钼的问题，提出了一种先将镍钼矿在600℃时焙烧脱硫，再将其加碱和通活性氧气浸出的方法，并通过对比试验确定了最佳的工艺条件：氢氧化钠30％（或碳酸钠50％），浸出液固比为3：1，温度90—100℃，反应时间3h。试验结果表明，该工艺明显优于传统的提取方法，另外利用焙烧过程中所释放出来的二氧化硫烟气制取焦亚硫酸钠，可大幅度缓解二氧化硫排放造成的环境污染问题。在最佳工艺条件下，钼的浸出率接近100％。The method of sintering Ni- Mo ores under 600℃ to remove sulfur, and then lixiviating under the alkaline and active-oxygen condition was advanced to solve the problem of extracting molybdenum from the rockyselect Nickel-Molybdenum ores in this paper. A serial of experiments were done to find out the optimum factors： the concentration of NaOH was 30% （the concentration of Na2CO3 was 50%）, the ratio of liquor to solid was 3： 1, the temperature was 90 - 100 ℃ and the reaction time was 3 hour. The results showed that the method was obviously superior than the traditional methods. The environment pollution which was caused by SO2 could be alleviated in a large extent when the SO2 released during the sintering processing was gathered to prepare Sodium pyrosulfite. Under the optimum factors, the lixiviating rate of molybdenum was near 100%.

关 键 词：镍钼矿 活性氧气 焙烧 浸出 

分 类 号：TF111.3[冶金工程—冶金物理化学]