Heap Leaching of Gold Ores.
5th Annu Conf Alaskan Placer Mining Miner Ind Res Lab Rep 1983 (68):80-83
During the 1970's, the Bureau of Mines investigated a particle agglomeration technique for improving the flow of leaching solution through heaps of clayey or crushed, low-grade gold-silver ores, wastes, and tailings. This technology has been adopted on a broad scale by the precious-metals-processing industry. This report presents information on five commercial operations that have benefited from agglomeration technology and that represent a cross section of current heap leaching practice. The technology is cost effective because of decreased leach times and improved precious metal recoveries.
5th Annu. Conf. Alaskan Placer Mining. Miner. Ind. Res. Lab. Rep. No. 68, 1983, PP. 80-83