This conventional cyanidation method is one of the more widely used methods in the gold cyanidation process. According to the different ores processed, it can be divided into: the whole mud cyanidation method for directly processing gold ore, and the concentrate cyanidation method for process gold concentrate.
Zinc Dust in Precipitant in Cyanidiation. In the cyanide process, gold and silver are dissolved from crushed ore as double alkali metal cyanides, from which they may be precipitated by such positive metals as sodium , aluminum, or zinc, or by electrolysis. Two extreme conditions may be noted.
zinc ore gold cyanidation redox cheap. Although iron, zinc and aluminum are proposed as reducing metals in cementation process, copper is most convenient because it is reasonably cheap and, in any case, it is required in the chemical reactions that involve the complexation of gold in thiosulfate solutions Guerra and Dreisinger, 1999.
Zinc complexes are more likely to cause trouble in the cyanidation of silver ores because such ores contain much more silver than a gold ore contains gold. Thus, a much larger amount of zinc is required to precipitate the dissolved silver, resulting in cyanide solutions carrying a relatively high percentage of zinc cyanogen complexes and in ...
Cyanide Process. Cyanide process is also called as Macarthur forest Process. It is the process of extracting gold or silver from the ores by dissolving in a dilute solution of potassium cyanide or sodium cyanide. This process was introduced in the year 1887 by the Scottish chemists naming Robert W. Forrest, John S. MacArthur, and William Forrest.