本报告为用英国Cornwall矿山所产低品位精矿所进行的500～1000克试样的试验结果,是过去做过的很小规模的还原和置换试验的继续。Holt和Pearson用含Sn 19%的精矿做过类似试验,但本试验与它不同,首先是用了含Sn 8%和45%的两种精矿,其次是所用反应器也不同。 This report is a test of a 500-1000 gram sample from a low grade concentrate produced at the Cornwall mine in the United Kingdom and is a continuation of a very small scale reduction and displacement test done in the past. Holt and Pearson did similar tests with 19% Sn-containing concentrates, but in this test it differs from the first one using two concentrates containing 8% and 45% Sn, followed by the reactors used.