用弱酸性硫脲溶液浸出硫化银日本东北大学矿冶研究所用弱酸性硫脲溶液浸出硫化银，在有铁离子存在下，硫化银中的硫转变成元素硫，银与硫脲形成硫脲络合离子Ａｇ（ＮＨ＿２ＣＳＮＨ＿２）了而被提取，在无氧化剂浸出时，硫化银按生成Ｈ＿２Ｓ的反应浸出，并在氮气流下使Ｈ... Sulphide sulfide leaching with weakly acidic thiourea solution The Institute of Mining and Metallurgy, Northeastern University, leaches silver sulfide from a solution of weakly acidic thiourea. In the presence of iron ions, the sulfur in the silver sulfide is converted to elemental sulfur. Silver and thiourea form the thiourea complex The ions of Ag (NH_2CSNH_2) were extracted, and in the absence of oxidant leaching, silver sulfide leached by the reaction of generating H_2S,