对于金精粉碘量法铜的试验分析

Test and Analysis of Copper Iodimetry with Gold Concentrate Powder

探讨金精粉碘量法铜的试验,可以有效测定出金精粉中铜的含量。根据国际标准GB/T7739.4在实验前准备相关试剂,实验时遵循实验原理、注意事项。在pH为3.5~4的氟化氢铵溶液中,Fe的稳定生成的FeF6 3-络离子避免了三价铁的干扰,然后Cu2+与KI作用生成Cu2I2沉淀,并析出I2,再用Na2S2O3标准溶液滴定,测定Cu的含量。

To discuss the test of iodometric method for copper in gold concentrate powder can effectively determine various minerals and their contents in gold concentrate powder.The main content of gold concentrate powder is gold,silver,copper,iron and zinc.The traditional fire assay method only detects gold and silver in gold concentrate powder.It is found that the iodimetry method is more comprehensive and detailed than the traditional flint method in the test of gold concentrate copper.