Goldcopper ores ScienceDirect
Jan 01, 2005#0183;#32;The effect of ammoniacal cyanidation of goldcopper ore as a means of reducing the effect of copper has been known for over 100 years, where ammonium chloride with lime was used to suppress copper interference. It has been found that the addition of 12 g/L ammonia to a standard cyanide leach solution can improve the apparent leach