Beneficiation chute is a bevel selection process, the slurry to slope flume or inclined plane, in pushing the water, mineral particles loose and stratification, the upper light mineral rapid discharge groove, lower heavy minerals stay in the groove or in low speed since the lower part of the discharge, respectively, then after, concentrate and tailings.

溜槽是最早出现的选矿设备，古代用淘洗方法选收重砂矿物，使用的工具就是原始的溜槽。有些粗粒砂金溜槽和砂锡溜槽沿袭至今，仍有使用，19世纪中叶出现了机械传动的带式溜槽和圆形溜槽，成为了当时细粒有色金属矿石的主要选别设备。以后出现了跳汰机和摇床，使溜槽的应用在相对减少，但溜槽以其结构简单，生产费用低廉的优势，仍在粗，中细粒矿石的选别中广泛应用。

Chute is the earliest processing equipment, used by ancient elutriation method selected placer mineral, tool use is the original chute. Some coarse grained placer gold chute and placer tin chute followed so far, are still in use, in the middle of the 19th century appeared mechanical transmission belt chute chute and round, become was fine in non-ferrous metal ores the main sorting equipment. After the emergence of jig and shaking, so that the application of chute are relatively decreasing, but the chute has the advantages of simple structure, low production cost advantage, still in coarse and fine ore selection is not widely used.