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传统的分解钼精矿流程氧化焙烧法存在着一系列缺点:首先,在焙烧过程中易发生MoS_2和MoO_3的二次反应,生成难溶的MoO_2,由于炉料烧结被包裹的MoS_2得不到充分氧化,致使氨浸时降低钼的收率,而脱硫不完全,也影响炼钢。由于同样原因,ReS_2与Re_2O_7亦发生二次反应,生成挥发性比Re_2O_7小的低价氧化物ReO_3、ReO_2,致使铼的收率降低。正常情况下,铼的挥发率为70～75%。其次,排出的二氧化硫不易回收,污染环境。为克服这些缺点,近年来,国内外对钼精矿的冶炼工艺进行了许多研究。
The traditional oxidation roasting method of molybdenum concentrate has a series of shortcomings: Firstly, the secondary reaction of MoS_2 and MoO_3 is easy to occur in the roasting process to form insoluble MoO_2, which is not fully oxidized due to sintering of the sintering charge , Resulting in the reduction of molybdenum ammonia leaching yield, and incomplete desulfurization, but also affect the steelmaking. For the same reason, ReS_2 reacts with Re_2O_7 to generate lower-valent oxides ReO_3 and ReO_2, which are less volatile than Re_2O_7, resulting in a decrease in the yield of rhenium. Under normal circumstances, rhenium volatilization rate of 70 to 75%. Second, the discharged sulfur dioxide is not easy to be recycled and pollutes the environment. In order to overcome these shortcomings, in recent years, many studies have been carried out on the smelting process of molybdenum concentrate at home and abroad.