In some cases oxidation of sulphide minerals is needed to liberate gold that is occluded within the sulphide matrix Sulphides can be oxidized by several methods and the overall costs are similar FLOWSHEET OPTIONS CRUSHING FOLLOWED BY DUMP OR HEAP LEACHING WITH CYANIDE This method of gold recovery is the preferred method for
· Occurrence Rare earth minerals occur as fluorites oxides tantalates carbonates phosphates sulfates borates silicates etc Qi 2018 List of different rare earth minerals are presented in Table average concentration of REEs in the earth s crust is found to be 150 220 ppm which is much higher than the concentration of
·Acid grade fluorite concentrate AGFC is the most valuable product of fluorite processing units In this study an environmentally friendly flowsheet is developed for the production of AGFC The ore of the Kamar Mehdi fluorite mine Tabas Iran is considered as a case study with grade of % fluorite % dolomite and %
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·The flowsheet for the treatment of high grade gold ores involves utilising proven processing paths The flowsheet may be divided into four basic steps Refer to Fig 1 1 Crushing and grinding 2 Gravity concentration 3 Intensive cyanidation 4 Tailings disposal CRUSHING AND GRINDING ROM GRAVITY CONCENTRATION O/S U/S TAIL
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·O BRYAN K Crushing flowsheet simulation Increased productivity and improved flowsheet design APCOM 87 Proceedings of the Twentieth International Symposium on the Application of Computers and Mathematics in the Mineral Industries Volume 2 Metallurgy Johannesburg SAIMM 1987 pp 167 178 Crushing Flowsheet