某氧化锡脉矿矿石,除含锡外,尚含有大量的铜、铁及少量铋矿物。其中铜主要为与铁紧密结合的结合体。该矿石经重选后,铜等难选矿物损失于尾矿中。还原焙烧氨浸取法试验,系研究回收其中的铜。其他有用金属的回收,系经重选得到锡中矿后,再用鼓风炉氯化挥发法回收锡、锌、铟、铋、镉等金属。还原焙烧氨浸取法回收结合氧化铜,历年来进行了不同规模的试验,本文叙述扩大试验及半工业试验所做的工作。试验说明,该法可进行工业规模的生产,并且 A tin oxide veins ore, in addition to tin, but also contains a large amount of copper, iron and a small amount of bismuth minerals. Among them, copper is mainly a combination of iron and iron. After the re-election of the ore, copper and other refractory minerals lost in the tailings. Reduction roasting ammonia leaching test, the Department of recovery of which copper. The recovery of other useful metals, after the re-election tin mine, and then blast furnace chlorination volatile recovery tin, zinc, indium, bismuth, cadmium and other metals. Reduction roasting ammonia leaching recovery combined with copper oxide, over the years carried out on different scales of the experiment, this article describes the expansion and semi-industrial tests done by the work. Test shows that the method can be carried out on an industrial scale, and