含金硫化物氧化时金行为的实验研究

• 作 者: А.М.Плюснин 莫耀支
• 出 处: 黄金
• 发表日期: 1983年03期
• 关键词: 硫化物氧化 氧化带 硫代硫酸盐 玻璃柱 亚硫酸钠溶液 黄铁矿 沉淀 不完全氧化 磁黄铁矿 矿物

当硫化物氧化时,其中所含的微粒金能转化为可溶状态;金在溶液中最可能的存在形式是硫代硫酸盐络合物.硫代硫酸盐络合物被破坏后,金在氧化剂的作用下以两种形式(均匀—分散形式和单个显微析出体形式)沉淀在氧化带矿物微粒的表面上.当冲洗氧化带产物时,均匀—分散的金能重新转入溶液中.当有硫代硫酸盐情况下,这个过程进行得尤为强烈.单个显微析出体形式的金,在氧化带产物中比较稳定,并且在溶液中没有硫代硫酸盐时,金甚至能合并成大的颗粒.

When the sulfide is oxidized, the gold contained therein can be transformed into a soluble state; the most likely form of gold in solution is the thiosulfate complex. After the thiosulfate complex is destroyed, The oxidizing agent precipitates on the surface of the oxidized zone mineral particles in two forms (homogeneous-dispersed form and single microscopic form), and when the oxidized zone product is washed, uniform-dispersed gold can be re-introduced into the solution. This process is particularly strong in the presence of thiosulfate, and gold in a single microprojectile body, which is relatively stable in the product of the oxidation zone, and even without thiosulfate in solution, can even be combined into large particle.