砂金选矿工艺主要包括选别前的准备作业和选别作业。准备作业主要由碎散和筛分两过程组成。碎散主要是将采出的矿砂中的矿粒和粘土质矿泥解离。筛分是筛除不含金的粗粒级。常用的设备有平面筛、圆筒筛、圆筒擦洗机等。砂金的选别主要采用重力选矿法，这是因为一方面砂金比重大（平均为17.50～18.0），粒度较粗（一般为0.074～2毫米），另一方面是因重力选矿法比较经济和简单。重选设备一般采用各种类型的溜槽、跳汰机和摇床（常用于精选）。

The process mainly includes selecting gold dressing preparation before operation and sorting operations. The preparation work is mainly composed of two processes of crushing and sieving. Shattered is mainly produced in the iron ore particles and clay mud dissociation. Screening is not the gold content of coarse grain size. Commonly used equipment, such as flat screen, cylindrical sieve, cylinder, etc.. The placer gold don't mainly by gravity separation method. This is because on the one hand, placer gold than major (average of 17.50 ~ 18.0), coarse grain size (usually 0.074 ~ 2 mm), on the other hand is because of gravity separation method is economical and simple. Gravity equipment generally use the jig and table chute, various types (used to select).