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于50年代,苏联开发了两个可供选择的回收钼、铼的处理钼精矿的方法:其一是精矿沸腾炉氧化焙烧工艺,从焙烧炉气中回收铼及部分钼,以氨溶液浸出烧渣及烟尘,从溶液中再吸附回收钼和铼;其二是于碱性介质中氧化浸出精矿工艺,吸附回收铼,沉淀钼酸钙。此后,在一有关的工厂中又开发和推行钼精矿硝酸分解,以吸附及萃取法处理溶液的工艺。
In the 1950s, the Soviet Union developed two alternative methods for the recovery of molybdenum and rhenium from molybdenum concentrates: one is the oxidation roasting process of the concentrate boiling furnace, and the rhenium and some molybdenum are recovered from the roasting furnace gas and leached with ammonia solution Slag and soot, reabsorption of molybdenum and rhenium from the solution; the second is in the alkaline medium oxidation leaching concentrate process, adsorption rhenium recovery, precipitated calcium molybdate. Since then, nitric acid has also been developed and promoted in molybdenum concentrates to treat the solution by adsorption and extraction.