论文部分内容阅读
俄罗斯科学院西伯利亚分院冻土学研究所和其他单位的现场研究和实验研究结果表明,对于高粘土含量砂矿(其中的金粒以小于0.5mm的细粒干和极细粒级为主)来说,使用现在的初始选矿加工流程时,约有20％～22％的金不能回收而进入昆矿。还查明,在许多北部地区,金粒主要为0.5mm以上粗粒级的砂矿的尾矿,在极低温条件下堆放多年后重复进行湿选,仍旧有利可图。这种情况一般可用工艺不完善及生产条件被破坏加以解释。但是,这类意见看来解释得还不够透彻,因为在砂矿的低温蚀变尾矿中,有相当数量
Field research and experimental studies at the Institute of Permafrost Institute, Siberian Branch, Russian Academy of Sciences, and other institutes showed that for high clay content sands, in which the gold grains are dominated by fine-grained grains less than 0.5 mm and very fine grained grains , Using the current initial beneficiation process, about 20% to 22% of the gold can not be recovered into Kunming. It has also been found that in many northern regions, the gold tailings are mainly tailings of coarse-grained ores of 0.5 mm and above, and are still profitable after repeated wet depositions after years of storage at very low temperatures. This situation can generally be used to explain the imperfections and the destruction of production conditions. However, such opinions appear to be inadequate to explain, since there is a significant amount of low-temperature altered tailings in the sand