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本工作试验了在用铅试金法富集铱、铑时,添加贵金属铂和金,以防止灰吹时铱和铑的损失;又采用氧-乙炔焰高温灼烧法,使灰吹后的金属合粒形成易溶于王水的铂基铑、铱合金,从而解决了常法测定铱、铑时结果易偏低的问题。按所拟定的富集和分离方法作矿样分析、回收试验和对比结果表明:方法的准确度较好,亦较其他试金方法简单、易行。
This work tested the use of lead gold method of enrichment of iridium, rhodium, the addition of precious metals platinum and gold, in order to prevent the loss of iridium and rhodium blown gray; and the use of oxygen - acetylene flame ignition method, the ash blown metal particles together Platinum-soluble rhodium soluble in aqua regia, iridium alloy, which solves the usual method for the determination of iridium, rhodium results when the problem is too low. According to the proposed enrichment and separation methods for mineral sample analysis, recovery test and comparison results show that: the accuracy of the method is better than other gold test method is also simple and easy.