... Large capacity 2.Gold and sand sifting, washing 3.Compost sifting Automatic Drum Rotary Sieve for Sand Washing and Grading machine 1. ... Quarry:gravel, clay, mountain meal, sand, etc.2) Coal Industry: lump coal, coal dust, coal washing, etc.3) Cold Mine: gold ... washing, such as gold, sand, etc.4) With belt conveyors and auto-clean systems for compost sifting. Automatic Drum Rotary Sieve for Sand Washing ...