高杂质钼铁合金氧化焙烧的研究  

Study on Oxidizing Roast of High Impurity Ferromolybdenum

作　　者：王学文[1] 肖连生[1] 刘万里[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《稀有金属》2007年第3期391-394,共4页Chinese Journal of Rare Metals

摘　　要：采用回转窑加热的方法对高杂质钼铁合金氧化焙烧进行了研究。研究发现，高杂质钼铁合金在350～450℃的温度下就开始软化。因此，氧化焙烧成败的关键是如何避免高杂质钼铁合金低温软化。为此，对氧化焙烧的工艺条件、工艺过程及添加剂进行了系统研究，获得了高杂质钼铁合金碳酸钠机械活化氧化焙烧的专利技术。实验结果表明，按高杂质钼铁合金中Mo，P，As，Si，V焙烧反应化学计量的0．7～0．8倍加入碳酸钠，机械活化后在空气中550～650℃焙烧1～2h，焙砂加水搅拌浸出，钼的浸出率达96％以上。The oxidizing roast of high impurity ferromolybdenum was studied by using rotary kiln. Experiments found that high impurity ferromolybdenum was softened at 350 - 450℃. Thus, the key to oxidize high impurity ferromolybdenum completely during roast was to avoid it softening at low temperature. The experimental results showed that the molybdenum leached from calcine was over 96 % in water. The calcine was obtained by roasting the mixture of high impurity ferromolybdenum and machine activated sodium carbonate in air at 550 - 650 ℃ for 1 - 2 h. The addition of the sodium carbonate was taken according to the 70% - 80% stoichiometric proportion of it reaction with Mo, P, As, Si, V in roasting.

关 键 词：钼 钼铁合金 焙烧 碳酸钠焙烧 

分 类 号：TF841.2[冶金工程—有色金属冶金]