Mineral processing refers to the dry and wet crushing and grinding of ore or other mineral-bearing products for the purpose of raising concentrate grade; removal of waste and unwanted or deleterious substances from an otherwise useful product; separation into distinct species of mixed minerals; chemical attack and dissolution of selected values. Among the methods used are hand sorting (including radioactivation and fluorescence); dense media separation; screening and classification; gravity treatment with jigs, shaking tables, Humphries spirals, Frue vanners, or sluices; magnetic separation at low or high intensity; leach treatment, perhaps using pressure and heat; and froth flotation.
---> see also: "Mineral processing" is in the NAICSCode "33313" Mining and Oil and Gas Field Machinery Manufacturing Mineral processing and beneficiating machinery manufacturing
