The spiral separators are designed for classifying the granularity 0.3-0.02 millimeters fine grain like iron,hematite,ilmenite,chromite,brasses,tin,tungsten,tantalum-niobium, gold ore, coal mine,monazite,rutile, zircon, and other Non-ferrous metal, rare metal, and non-metallic minerals with different specific gravity in the mineral processing plant.