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最近,由杭州大学、浙江丝绸工学院研制的庄山金矿湿法(氯化法)提取金、银的新技术取得了成功。该技术主要包括金精矿的硫酸化焙烧、焙砂的硫酸浸出、酸浸渣的水溶液氯化、从酸浸液中分别提出银、铜、锌,再从氯化液中提取金,氯化渣中提出铅。经试验证明,该法的提取率很高,金、银的提取率分别达到95％和96％,而且不需辅助的火法冶炼和电解提纯,金、银的纯度分别达到99.86％和99.96％。比氰化法高得
Recently, the new technology of gold and silver extraction from the Zhuangshan gold mine (chlorination method) developed by Hangzhou University and Zhejiang Silk Institute of Technology has achieved success. The technology mainly includes the sulfation roasting of gold concentrate, the leaching of sulfuric acid from calcine and the chlorination of aqueous solution of acid leaching residue. Silver, copper and zinc are respectively proposed from the acid leaching solution, and gold, chloride Lead in the slag. The test shows that the extraction rate of the method is high, the extraction rates of gold and silver reach 95% and 96% respectively, and the purity of gold and silver reaches 99.86% and 99.96% respectively without auxiliary pyrometallurgy and electrolytic purification. . Higher than the cyanide method