Quantitative reductive leaching of a low-grade spessartine ore in acidic media

Baba, Alafara A.; Abdulkareem, Aishat Y.; Raji, Mustapha A.; Adebayo, Samad A.; Alabi, Abdul G. F.; Ghosh, Malay Kumar; Hariprasad, D.; Adeyemi, Christianah O.

doi:10.1080/03067319.2019.1638372

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…To better understand the mechanism of ore dissolution kinetics in this study, the leaching data were subjected to the shrinking core models (SCM) (Levenspiel 1992;Baba et al 2020a). When the reaction is chemically controlled, the model is consistent with Eq.…”

Section: Dissolution Kinetics Studiesmentioning

confidence: 99%

Upgrading of a Nigerian Vermiculite-Phillipsite Rich Talc Ore by Flotation-Cum-Acid Leaching Routes for Industrial Applications

2021

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Talc remains an important mineral with a wide array of applications in paints, paper, polymers, pharmaceuticals, and cosmetics industries when its associated impurities were accordingly processed due to its distinct surface properties. Thus, treatment of a Nigerian talc ore consisting of talc, vermiculite, and phillipsite was investigated using polyethylene glycol (PEG-6000) as frother to separate the associated gangues for industrial value additions. At optimal conditions, the talc concentrate recovery was 70.2% with increasing SiO 2 assayed from 44.50 to 46.70%; MgO from 18.57 to 23.59%; and a decreasing Fe 2 O 3 from 8.52 to 2.22%. Further improvement on talc quality was investigated by leaching the concentrate with the hydrochloric acid solution. The dissolution mechanism is a diffusion-controlled reaction with the calculated activation energy of 26.18 kJ/mol. The residual product increased SiO 2 to 49.33% and MgO to 23.76% as Fe 2 O 3 decreased to 0.57% yielding 93.3% efficiency. The product as characterized could find applications in paints, paper, and cosmetics industries.

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Section: Dissolution Kinetics Studiesmentioning

confidence: 99%

Upgrading of a Nigerian Vermiculite-Phillipsite Rich Talc Ore by Flotation-Cum-Acid Leaching Routes for Industrial Applications

2021

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“…Therefore, this study considers the hydrometallurgical treatment of sulphuric -oxalic acid leach spessartine ore for the recovery of manganese by alkaline precipitation and solvent extraction technique by Cyanex®272 extractant in kerosene diluent. Data on the quantitative reductive leaching of the ore in acidic media have been recently reported [16].…”

Section: Introductionmentioning

confidence: 99%

Hydrometallurgical preparation of high-grade industrial manganese compound from a low-grade spessartine ore by Cyanex®272 extractant

Abdulkareem

Baba

Raji

et al. 2020

International Journal of Environmental Analytical Chemistry

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This study highlights a hydrometallurgical method for the purification, extraction, and beneficiation of a multi-elemental leach liquor obtained via reductive leaching of spessartine ore, for the production of high-grade manganese compound. During these treatments, the effect of Cyanex®272 concentrations, pH, aqueous: organic (A/O) was quantified. At optimal conditions (Temperature = 27 ± 2°C, 0.2 mol/L Cyanex®272, pH = 4.5, A/O = 1:1), manganese extraction efficiency was >90%. The stripping of the loaded organic phase by 0.1 mol/L sulphuric acids yielded 95.7% in a single stripping stage. The resulting aqueous solution was appreciably beneficiated to produce manganese sulphate monohydrate (MnSO 4 .H 2 O: 49-315-9500, melting point = 702.8°C) via precipitation and crystallisation methods. Finally, a flow sheet summarising the analytical treatment steps was provided.

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Slope-specific lateritization of garnet–sillimanite–gneiss cuestas in Matale area, Sri Lanka

Weligepola,

Dissanayake,

Mantilaka

et al. 2024

Int J Earth Sci (Geol Rundsch)

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Quantitative reductive leaching of a low-grade spessartine ore in acidic media

Cited by 3 publications

References 27 publications

Upgrading of a Nigerian Vermiculite-Phillipsite Rich Talc Ore by Flotation-Cum-Acid Leaching Routes for Industrial Applications

Upgrading of a Nigerian Vermiculite-Phillipsite Rich Talc Ore by Flotation-Cum-Acid Leaching Routes for Industrial Applications

Hydrometallurgical preparation of high-grade industrial manganese compound from a low-grade spessartine ore by Cyanex®272 extractant

Slope-specific lateritization of garnet–sillimanite–gneiss cuestas in Matale area, Sri Lanka

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