Mineral processing, art of treating crude ores and mineral products in order to . For these sampling machines to provide an accurate representation of the whole lot, .. Shaking tables are often used for concentrating finely grained ores of tin,.
In the field of extractive metallurgy, mineral processing, also known as ore dressing, is the . Before the advent of heavy machinery the raw ore was broken up using hammers wielded by hand, a process called "spalling". .. An aqueous solution as a dense medium is used in coal processing in the form of a belknap wash.