Merrill-Crowe process

The Merrill-Crowe process is a method used in gold mining to extract pure gold from a solution. After gold-bearing ore is crushed and treated with a chemical called cyanide, it forms a liquid solution containing dissolved gold. The Merrill-Crowe process involves removing impurities like zinc and other metals by dewatering the solution and then adding zinc dust, which causes the gold to settle out of the liquid as a solid. The gold is then filtered, dried, and melted to produce pure gold bars. This process is efficient for recovering fine gold from cyanide solutions.