The next stage in heap-leaching development, using the concept for gold recovery, was swift to follow. The Cortez and Bootstrap operations in Nevada are now credited with being the first out of the blocks in this respect, in 1973 and 1974 respectively, leading the way in what is now one of the industrys standard methods of gold recovery.
The heap leaching approach to ore beneficiation is a growing trend in the mining industry, with applicability to various metals outside of copper and gold. Agglomeration is a valuable tool in maximizing recovery during the heap leaching process.
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Heap leaching (HL) is a flexible and economic mineral processing method, commonly used to extract gold from low-grade gold ores. In this process, ore is firstly crushed to fine particles. By spraying leaching solution to the large piles, the gold-containing solution is leached.