Don't choose

选金设备重选法是处理砂金矿最有效、最经济的方法。由于砂金矿中金的粒度组成不同，各种重选设备处理物料的有效粒度界限也不同，所以合理的砂金矿选别流程应是几种重选设备的联合作业。

Choose gold equipment gravity method is the most effective, the most economical processing of placer gold. The composition of gold deposits in different size sand, grain boundaries between various effective gravity equipment handling of materials is also different, so the sand gold rational flowsheet should be combined several gravity separation equipment.

有常规采用的选冶技术，还有近年来掌握的难选冶技术，并对选冶一些新技术如非氰浸出剂和化学氧化法等也进行了研究和探讨。选冶技术的进步，促进了我国黄金工业的发展。

There are conventional smelting technology, and in recent years, it is difficult to master the technology, and some new technologies such as non cyanide leaching agent and chemical oxidation and so on have been studied and discussed. The development of the gold industry in China has promoted the development of the gold industry in China.

选金设备生产处于初步发展阶段，除少数矿山开始采用氰化法提金工艺外，矿山就地产金主要是从砂矿重选所得的自然金和精矿的冶炼，以及混汞法提金工艺产出的汞膏为原料就地冶炼，矿山就地冶炼多数采用传统的坩埚法熔炼，因生产工艺和处理物料性质不同，所产合质金的含金量也不一样，直接交售银行因含金量不高或含银不计价等原因，有的矿山为提高质量和经济效益采取了化学法除杂再次熔炼或电解法进行金银分离精炼。

Choose gold equipment production in the preliminary stage of development, with the exception of a few mines started by cyanidation from abroad, the real estate gold mine is the main smelting income reselection from placer gold and concentrate, and amalgam of gold amalgamation process output as raw material in smelting, mining smelting is used for the majority of the crucible process for the production of traditional. Process and material properties of different gold content produced by gold bullion is not the same, because the bank directly sold gold or silver is not high valuation, some mines in order to improve the quality and economic benefits to chemical impurity removal method again melting or electrolytic method for separating gold and silver refining.