Electrokinetic Dewatering and Consolidation of Mine Mill Tailings.
Proc Am-Polish Conf on the Env Prot of Open Pit Coal Mines Denver Colorado 5/75 PP 149-160 :149-160
Full-scale field tests were conducted by the Bureau of Mines in cooperation with the Hecla Mining Company, at two of the firm's underground mines in north Idaho. Technical and economic feasibility of dewatering and consolidating fine-grained slurries of mine waste by applying direct current between buried electrodes was demonstrated. Unclassified siliceous mill tailings containing slimes mixed with the coarser sand normally used for hydraulic backfill, new slimes pumped from an underground collection sump into a working stope, and year-old slimes impounded behind a temporary dam in an unused tail drift were treated. In all tests, electrokinetic treatment transformed the fluid slurries into firm backfill in a relatively short time and with moderate power consumption. Treatment details and results are briefly described in this report.
Proc. Am-Polish Conf. on the Env. Prot. of Open Pit Coal Mines, Denver, Colorado, 5/75, PP. 149-160