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在湿法冶金的工艺过程中,常常需要把后面工序的母液、渣或一部分中间产物返回到前面工序再处理。这在提高收率、充分利用原材料方面是行之有效的。但是,对于计算金属回收率却带来了很多麻烦。很多厂对此只能做出非常粗略的估算,使实际收率与理论收率往往相差悬殊。等人对火法生产中有返料时的金属回收率的计算曾做过推导,其方法也适合于湿法生产。本文以全水冶法生产仲钼酸铵为例,讨论湿法冶金生产中,有返料时的金属回收率的计算问题。
In the hydrometallurgical process, it is often necessary to return the mother liquor, slag, or a portion of the intermediate product of the subsequent process to the previous process for further treatment. This is effective in increasing the yield and making full use of raw materials. However, it has caused a lot of trouble in calculating the metal recovery rate. Many plants can only make a very rough estimate of this, so that the actual yield and the theoretical yield is often very different. Et al. Have calculated the metal recovery rate when there is reheat in fire production, and the method is also suitable for wet production. In this paper, the production of ammonium permanganate all-water metallurgy method, for example, to discuss hydrometallurgical production, metal material recovery rate of return calculation.