Mercury is used in small-scale mining to amalgamate gold\ud particles, facilitating their separation from heavy sands. The negative\ud environmental/health-related effects of mercury in mining communities in\ud Ghana and other countries have generated research interest into development of\ud safer alternatives. This study tested direct smelting as an alternative to\ud amalgamation. In laboratory investigations, direct smelting yielded 99.8%\ud recovery against 97% for amalgamation. A locally-fabricated furnace,\ud sika bukyia, was used in field tests, yielding an average recovery of 98.3%\ud compared to 88% for amalgamation. Direct smelting has the potential to\ud replace amalgamation and retorting because it is effective, easy, quick and\ud transparent
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.