A novel technology for molybdenum extraction from molybdenite concentrate

“…15 So, if sodium chlorate electrolyte can be used directly for the treatment of molybdenite concentrate, the crystallization and purification of sodium chlorate can be omitted significantly reducing production costs.…”

Section: Introductionmentioning

confidence: 99%

A novel hydrometallurgy of molybdenite concentrate and its kinetics

Cao

Jiang

Wang

et al. 2012

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

show abstract

“…In previous studies the molybdenum loaded organic phase was stripped with ~20%(w/v) NH 3 which produced a liquor of ~0.5 M Mo(VI) which was subsequently treated to recover high purity molybdenum products (Cao et al, 2009;An et al, 2009a). A 100 L sample from the solvent extraction circuit (Fig.…”

Section: Methodsmentioning

confidence: 99%

Selective removal of arsenic(V) from a molybdate plant liquor by precipitation of magnesium arsenate

Park¹,

Tran

Lee

et al. 2010

Hydrometallurgy

View full text Add to dashboard Cite

Precipitation of Mg 3 (AsO 4 ) 2 for the removal of arsenic (As) from a molybdenum oxide processing plant liquor containing 70.9 g/L Mo(VI) and 469 mg/L As(V) was performed.. The Stabcal software was used to model the speciation and solubility equilibria, and to identify the pH conditions at which optimum precipitation can be carried out. The optimum pH range for As(V) removal is between pH 7.5 to 10.2. This avoids the need to adjust the liquor pH to affect the precipitation. By adding magnesium chloride or sulphate at a Mg:As molar ratio of at least 2:1, As(V) could be removed to less than 5 mg/L at pH 10.2 resulting in a pure Mo(VI) liquor from which a high purity product of 99.9% MoO 3 could be produced by acidification.

show abstract

“…These factors have motivated several researchers to consider new and alternative processes to produce Mo metal from molybdenite concentrate. Among the proposed methods, leaching [2][3][4], electro-oxidation [5][6][7][8][9][10], bioleaching [11][12][13], and chlorination [14,15], appear to be potential routes for treating molybdenite concentrates. However, another concept for extraction of metals from their sulfides is their direct reduction in the presence of a suitable metal oxide with desulfurizing capability [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%