Granulated Matte Excavator 85
After being tapped off of the furnace the molten matte copper is fed into a swiftly tabulating water bath. Due to the sudden differentials in temperatures caused by dumping molten matte into cold highly tabulating water, extreme build ups of pressure in the matte material and subsequent intense releases of energy are produced. This extremely energetic reaction is very well contained in a completely enclosed heavy thick walled concrete granulation pit. The result is a black material resembling coarse sand which is then excavated out and is used as feed material for the concentrate furnace where it is further refined into blister copper.