Mineral processing, art of treating crude ores and mineral products in order to . not suitable for machine sampling (slimy ore, for example) or where machinery is either . The electric discharge vaporizes a portion of the sample and excites the.
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". with electrical conductivity and magnetic susceptibility sensors, to control the mechanical separation.