... fine materials working by gravity. It is widely used in selection of Tin, tungsten, gold, silver, lead, zinc, tantalum, niobium, iron, ... the main mineral processing equipment; it is widely used in sorting tungsten, tin, tantalum and niobium and other rare metals and precious ... iron, manganese ore stone and coal. When dealing with tungsten, tin and other minerals, its effective recovery size is 2-0 ...