美国公布一项专利(No5089412),提出一种含金银砷黄铁矿细菌浸出方法。为了最充分地分解硫化物和分离贵金属,便于后续氰化浸出,该专利推荐依次采用以下三种细菌:1.硫氧化硫杆菌(Thiobacillusthioo-Xidants),仅使硫氧化; The United States announced a patent (No5089412), proposed a gold and silver arsenic pyrite bacteria leaching method. In order to disintegrate the sulphide and to separate the noble metal to the fullest extent for subsequent cyanidation leaching, the patent recommends the following three bacteria in sequence: 1. Thiobacillusthioo-Xidants, which oxidizes only sulfur;