论文部分内容阅读
含金矿物经氰化浸取与锌丝置换所沉淀之无定型金常夹有多种元素,如铅、锌、铜、铁、银、铋及二氧化硅等,外观形态呈泥状,故俗称金泥,系工业生产的中间产品。经试验研究可采用常规容量分析方法的组合,连续测定金、铅、铜及铁。用硝酸、硫酸分解金泥试样,铅以硫酸铅沉淀析出,金不溶解,从而分离出金、铅。以醋酸钠溶解硫酸铅沉淀使与金分离。铅用EDTA容量法测定。以王水分解金,经稀释分取、蒸干,转为醋酸性溶液用碘量法测定。滤液中的Cu~(2+)、Fe~(3+)、用氨水中和,铜
Gold-containing minerals by cyanide leaching and replacement of zinc wire deposited amorphous gold often contains a variety of elements such as lead, zinc, copper, iron, silver, bismuth and silica, the appearance of the shape was mud, so Commonly known as gold mud, the Department of industrial production of intermediate products. The experimental study can be used conventional capacity analysis of a combination of continuous determination of gold, lead, copper and iron. With nitric acid, sulfuric acid decomposition of gold mud sample, lead precipitation lead sulfate, gold does not dissolve, which separated gold, lead. Dissolve gold with sodium acetate to dissolve lead sulfate precipitate. Lead with EDTA volumetric method. Disintegration of gold to aqua regia, the diluted points, evaporated to acetic acid solution with iodometric method. The filtrate of Cu ~ (2 +), Fe ~ (3 +), with ammonia and copper