Wear of grinding media represents a significant cost in the wet grinding of ores in commercial ball mills. The total wear process of grinding involves
Minor-element interactions in equilibrated samples of copper matte and silica-saturated iron silicate (fayalite) slag have been studied by the Bureau of Mines to gain basic
Most copper ore currently being mined contains copper mainly as chalcopyrite. Since chalcopyrite by itself is only about 35 percent copper, it is difficult to
Design, fabricate, and test a machine capable of operating in coal seams 48-inches and thicker that can reduce the time, expense, and injury potential inherent
This report presents the results of research aimed at evaluating and preventing the leaching action that may result from the disposal of waste ferrous slags
To help assure an adequate supply of raw materials to meet national economic and strategic needs, the Bureau of Mines undertook research to devise technology
The fact that chloride oxidates can solubilize base metals from sulfide concentrates has been known since the 1880’s. The work of Hoepfner in 1902 was
This is of special interest in hydrometallurgical processing since it provides an upgraded sulfide and rejects iron to solution. Also, the conversion of chalcopyrite is
Metal complexed cyanides in wastewaters form as a result of interactions of free cyanide with metals present in the wastewater and exhibit varying degrees of
Improper size distribution of the grinding media in a multicompartment mill can be a source of many operation problems encountered. Inefficient use of the power