The cyanide solution strength is also important in leaching gold, with the typical range of solution being in the 0.02% -0.05% NaCN. The gold particle
size has a tremendous effect on the time required for dissolution in a cyanide solution. Generally, the finer the gold, the quicker it will dissolve.
A 45 micron particle of gold would dissolve in 10-13 hours, while a 150 micron particle might take from 20 to 44
hours to dissolve in the same solution. |