Why is cyanide heap leaching used to extract gold from some deposits?
A)The gold concentration is too low to be extracted using traditional methods.
B)It is safer than other methods.
C)Gold can only be extracted from finely disseminated deposits.
D)It produces fewer mine tailings than other methods.

Question

Quizplus · Accepted Answer

Cyanide heap leaching is a method used to extract gold from lower-grade ores that have a gold concentration that is too low to be extracted using traditional methods such as gravity concentration or cyanidation. The cyanide solution is used to dissolve the gold particles from the ore and then the gold is extracted from the solution. This method is economical and efficient for extracting gold from disseminated deposits with low gold concentrations.

Why Is Cyanide Heap Leaching Used to Extract Gold from Some