Solvent extraction of gallium from an Indian Bayer process liquor using Kelex-100

Puvvada, G V K; Chandrasekhar, KB; Ramachandrarao, P.

doi:10.1016/0892-6875(96)00097-0

Cited by 17 publications

(8 citation statements)

References 2 publications

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“…Another method for increasing the reaction rate is based on deliberate creation of a "water-in-oil" microemulsion in the organic phase (Dantas et al, 2002;Mihaylov and Distin, 1992;Puvvada, 1999;Puvvada et al, 1996). Fourre and Bauer (1983) have shown that a microemulsion was produced by the addition of a long chain alcohol such as butanol and the sodium salt of a long chain carboxylic acid such as octanoate to the organic phase containing Kelex 100.…”

Section: Solvent Extractionmentioning

confidence: 98%

Recovery of gallium from Bayer liquor: A review

et al. 2012

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Section: Solvent Extractionmentioning

confidence: 98%

Recovery of gallium from Bayer liquor: A review

et al. 2012

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“…One of the important finding on this study is the association of gallium oxide, Ga 2 O 3 (0.03-0.69 %) in some of the selected grains of the sample. Association of gallium in bauxite, red mud aluminium leach liquor have been reported in the literature [9][10][11] and many bauxite processing plants of the world are also recovering gallium as additional revenue to the plant. In India, Hindalco industries, recover *55 kg per annum of gallium from their alumina processing plant containing *0.012 % of gallium [12].…”

Section: Mineral Chemistry Of the Samplementioning

confidence: 99%

Characterization and Beneficiation Studies of a Low Grade Bauxite Ore

Rao

Das

2014

J. Inst. Eng. India Ser. D

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A low grade bauxite sample of central India was thoroughly characterized with the help of stereomicroscope, reflected light microscope and electron microscope using QEMSCAN. A few hand picked samples were collected from different places of the mine and were subjected to geochemical characterization studies. The geochemical studies indicated that most of the samples contain high silica and low alumina, except a few which are high grade. Mineralogically the samples consist of bauxite (gibbsite and boehmite), ferruginous mineral phases (goethite and hematite), clay and silicate (quartz), and titanium bearing minerals like rutile and ilmenite. Majority of the gibbsite, boehmite and gibbsitic oolites contain clay, quartz and iron and titanium mineral phases within the sample as inclusions. The sample on an average contains 39.1 % Al 2 O 3 and 12.3 % SiO 2 , and 20.08 % of Fe 2 O 3 . Beneficiation techniques like size classification, sorting, scrubbing, hydrocyclone and magnetic separation were employed to reduce the silica content suitable for Bayer process. The studies indicated that, 50 % by weight with 41 % Al 2 O 3 containing less than 5 % SiO 2 could be achieved. The finer sized sample after physical beneficiation still contains high silica due to complex mineralogical associations.

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“…The solution contained 200 mg dm −3 of Ga and 250 g dm 3 of NaOH (Fig 3). It was observed that extraction of Ga increased as the amount of resin was increased, whereas a reverse trend was observed in the case of gallium loading onto the resin.…”

Section: Effect Of Amount Of Resinmentioning

confidence: 99%

“…Gallium can be extracted using Kelex 100 in the presence of surfactants. 3,18,19 It has been reported that Alkanoyl oxine 19,20 gave good gallium extraction from Bayer liquor. Filik and Apak 21 reported the efficiency of gallium extraction using 5-palmitoyl-8-hydroxyquinoline extractant.…”

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confidence: 98%

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Preferential extraction of gallium from Bayer liquor using ion exchange chelating resin containing hydroxamic acid functional group

Rao

Sarangi

Dash

et al. 2003

J of Chemical Tech & Biotech

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Gallium extraction studies were carried out using resin containing an hydroxamic acid functional group. Extraction was dependant on reaction time and alkali concentration. The resin did not extract aluminium. Vanadium extraction kinetics were slower than those of gallium. The gallium and vanadium separation efficiency increased with decreasing contact time with extractions of 64% and 32% respectively after 1 min. Gallium extraction was independent of alkali concentration up to 250 g dm −3 and thereafter decreased with increasing alkali concentration. Vanadium extraction decreased with increasing alkali concentration. Cyclic batch and column studies were carried out with synthetic as well as actual Bayer liquor to test the stability and preferential extraction of gallium using the resin. It was observed that using resin partially loaded with gallium, the co-extraction of vanadium could be minimised.

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Solvent extraction of gallium from an Indian Bayer process liquor using Kelex-100

Cited by 17 publications

References 2 publications

Recovery of gallium from Bayer liquor: A review

Recovery of gallium from Bayer liquor: A review

Characterization and Beneficiation Studies of a Low Grade Bauxite Ore

Preferential extraction of gallium from Bayer liquor using ion exchange chelating resin containing hydroxamic acid functional group

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