In a dry washer all gold included in a lump of waste passes out of the machine. As water usually will break up all the gravel and separate the gold from the other material, a better saving usually can be effected with the rocker or sluice-boxes than with a dry washer.
Dry-washing machines use an air blowing fan or bellows-type device to blow a controlled amount of air-flow up through the dry material that is being processed. Air flows help blow off the lighter materials and allow the heaviest particles and gold to collect.
Industrial Gold Dry Washing Equipment Supplier Tanzania . is world leading industrial gold dry washing equipment supplier. Dry gold washing machines use an air blowing fan or bellows type device to blow a controlled amount of air flow up through the dry material that is being processed.