Heap Leach Amenability Bottle Roll Test
Heap leaching involves the stacking of crushed rock into heaps and then applying a dilute solution of cyanide solution over the ore and allowing this to percolate down through the heap to dissolve the contained gold and silver content.
In many situations the heap leach setup can offer a better economic solution for your project even in situations where lower gold and silver recoveries are obtained in comparison to milling and tank leaching.
Grinding Solutions offers a range of tests to quantify the performance and evaluate the optimal conditions for heap leaching. The first step in assessing the amenability of your ore to heap leaching is the coarse ore bottle roll test.
Ore samples are crushed to a range of top sizes and then leached in an intermittently rolling bottle until leaching of the gold and silver content ceases. Once an optimum top size has been ascertained cyanide dosage can be investigated in a similar manner.