Basic Mining and Processing Principles Modern day mining .
Modern day mining operations extract valuable minerals which containing metals . Leaching is a relatively low cost and common process that uses chemicals to . with a lower desired metal content are normally leached on lined heap leach pads. . Precious metals gold and silver, base metals copper, lead, and zinc, and.
Heap leaching Wikipedia
This process, called the "leach cycle," generally takes from one or two months for simple oxide ores (e.g. most gold ores) to two years for nickel . 3) How does the form of a heap affect the recovery and solution grade?Get Price