Gold cyanidation (also known as the cyanide process or the MacArthurForrest process) is a hydrometallurgical technique for extracting gold from lowgrade ore by converting the gold to a watersoluble coordination is the most commonly used leaching process for gold extraction.. Production of reagents for mineral processing to recover gold, copper, zinc and silver represents ...

Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials. Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy.

Sau đó, người ta có thể dùng 2 phương pháp cơ bản trong luyện kim là nhiệt luyện (pyrometallurgy) hoặc điện chiết (electrowinning). Quá trình nhiệt luyện khử kẽm oxide với cacbon hoặc cacbon mônoxide ở 950 °C ( °F) thành kim loại kẽm ở dạng hơi.