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难浸金矿石目前在国内外引起人们的广泛注意.这些矿石需要某种预处理使金游离出来,以便于浸取.预处理方法的选择在某种程度上取决于矿物学.本文以河南某地难浸金矿石为原料,采用焙烧一硫代硫酸盐浸取,研究了焙烧条件与浸取率的关系.实验表明:在接触氧化剂存在的条件下焙烧,可获得97%以上的浸取率.
Difficult to digest the gold ore at home and abroad currently aroused widespread attention.These ore needs some kind of pretreatment to make the gold free out in order to facilitate the leaching.The choice of the pretreatment method depends to some extent on the mineralogy.In this paper, The refractory gold ore was taken as raw material and the roasting and thiosulfate leaching was used to study the relationship between roasting condition and leaching rate.The experiment shows that the leaching rate can reach more than 97% under the condition of contact with oxidant .