本文概述了硫代硫酸铵法的进展与理论基础,研究了提高金银浸出率的适宜条件,提出浸取液返回循环浸出,可降低试剂单耗.一、前言用湿法工艺从金精矿中提取金银,目前国内外普遍采用氰化法.此法之所以仍被广泛地采用,因其具有工艺简便、设备完善、金银回收率高,成本低等优点.但氰化法也有明显的不足之处,不仅浸出时间长(通常需要40个小时左右),而且众所周知,氰化物 This article summarizes the progress and theoretical basis of the ammonium thiosulfate method, studies the suitable conditions for improving the gold and silver leaching rate, and proposes that the leaching solution return to the cyclic leaching can reduce the reagent consumption. I. INTRODUCTION Wet process from the gold concentrate In the extraction of gold and silver, the current cyanide method commonly used at home and abroad.This method is still widely used, because of its technology is simple, well-equipped, high recovery rate of gold and silver, low cost, but the cyanide method is also obvious Of the deficiencies, not only leaching a long time (usually takes about 40 hours), and it is well known that cyanide