浅谈细粒砂金的选收

The processing and recovery of fine grained alluvial gold

为选收细长、密实、不规则的细粒砂金，保证其在分选中的有效重力大于介质阻力，应制定以跳汰为基础的船选工艺和先分级、后分选的岸上选厂工艺，优选适宜矿砂各自特性的选矿设备和操作参数。恰当地应用旋流器、人造草皮和毛毯等，也可有效地捕收细粒砂金。

For the purpose of processing fine grained,dense and irregular shaped alluvial gold and ensuring the effective gravity greater than medium resistance in the course of separation,the technology of ore processing on gold dredger with jigging as its foundation and the technology of ore dressing in concentration plant on river bank with classification conducted prior to separation must be developed.In addition,the optimization of equipment and operating parameter is quite necessary.By proper application of cyclone,artificial turf and wollen blanket,the fine grained gold can be also captured.