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- W1443135588 abstract "Abstract Studies on the recovery of tungsten from a composite barite–scheelite concentrate ore were conducted utilizing a soda–silicon roast-Na 2 CO 3 solution leach technique. Scheelite and barite mainly compose this ore with a slight trace of other impure components. A high tungsten recovery ratio is not achievable by physical separation by beneficiation or caustic autoclaving procedures as a significant amount of scheelite and barite occur in an interspersed state. Soda–silicon roast-Na 2 CO 3 solution leach is then proposed to extract tungsten from this special ore with effects of the roasting and leaching process tested under variables such as roasting time, temperature, Na 2 CO 3 amount and leaching conditions. Approximately 95.93% of W was dissolved into the solution under optimum roasting conditions of temperature 850 °C, reactive time 2 h, molar ratio of Na 2 CO 3 /W 3 and 10% SiO 2 dosage of feed mass with leaching conditions of temperature 60 °C, stirrer speed 300 rpm, leaching time 1 h, liquid/solid ratio 4 and in 10 g/l Na 2 CO 3 solution." @default.
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- W1443135588 date "2016-01-01" @default.
- W1443135588 modified "2023-10-16" @default.
- W1443135588 title "Studies on the leaching of tungsten from composite barite–scheelite concentrate" @default.
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- W1443135588 doi "https://doi.org/10.1016/j.ijrmhm.2015.07.020" @default.
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