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The Solvent Extraction Separation of Bismuth and Molybdenum from a Low Grade Bismuth Glance Flotation Concentrate by Jian-guang Yang; Jian-ying Yang; Mo-tang Tang; Chao-bo Tang; Wei Liu is a Engineering article available to read on EtoBox.
What is The Solvent Extraction Separation of Bismuth and Molybdenum from a Low Grade Bismuth Glance Flotation Concentrate about?
The main purpose of this study was to characterize and to extract bismuth and molybdenum from a low grade bismuth glance concentrate. Selective leaching of bismuth could be obtained at a temperature range 60 to 85 °C for a leaching duration of 2 h with hydrochloric acid concentration of 150 gpl, lignin calcium concentration of 0.02 gpl and using a solid-liquid ratio 1/4 g/cc. Treatment of leach liquor for the solvent extraction of bismuth with N235 showed that 8.0 × 10 -2 M N235 in kerosene, a 3 min period of equilibration and a pH 0.2 were sufficient for the extraction of Bi(III). This bismuth-loaded organic phase was almost completely stripped using 0.5 M EDTA solution. Treatment of leached residue was dealt with by roasting in the presence of slaked lime, and followed by hydrometallurgical treatment of the roasted products. In the lime roasting process, molybdenum recoveries of around 99% were achieved when an excess of 50% lime over stoichiometric requirement was roasted at 700 °C for 2 h and the calcine was leached with 4 M HCl, at 70-80 °C for 2 h. Molybdenum then was effectively extracted from the leached residual solution with N235. An optimum pH of 0.5 was determined for m
Who reads The Solvent Extraction Separation of Bismuth and Molybdenum from a Low Grade Bismuth Glance Flotation Concentrate?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Jian-guang Yang; Jian-ying Yang; Mo-tang Tang; Chao-bo Tang; Wei Liu
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-386X)
- Published
- 2009
- Language
- EN
- Field
- Engineering (Physical Sciences)
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