Complex processing of manganese bearing waste and low-grade ores by autoclaving method

Chirakadze, Archil; Gurchumelia, Lali; Khomeriki, Irina; Toscano, William A.; Bazghadze, Izolda; Geleishvili, Irine; Gvakharia, Vakhtang; Geleishvili, T. P.

doi:10.1504/ijgw.2016.077919

Cited by 2 publications

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“…The Υ-MnO 2 produced by roasting of MnCO 3 is widely used for battery applications. Various attempts have been reported in the literature to produce valuable materials from low-grade Mn ores (Ahmed 2010;Pour et al 2014;Chirakadze et al 2016;Lian et al 2018). Pagnanelli et al (2007) reviewed various methods to produce chemical manganese dioxide and studies the effect of the operating conditions.…”

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confidence: 99%

Development of a process to produce manganese nanomaterials from low grade ferruginous manganese ores

Singh

Pati

Kumar

2019

Mineral Processing and Extractive Metallurgy

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This study has been carried out to explore the feasibility to use the low-grade ferruginous manganese ores to produce manganese nanomaterials (Mn ferrites and ϒ-MnO 2 ). Ore samples were collected from mines and were ground into <250 μm particle size. These samples were leached using a 1.5 M solution of oxalic acid for 6 h at 90°C. The recovered solution was processed through two different routes. In the first method, leachate was photo-reduced for 8 h and the precipitate was roasted at 350-700°C to produce Mn nano ferrites of magnetic saturation of 18.71 emu/g. In the other route, iron was removed by pH adjustment, and MnCO 3 was produced using NaHCO 3 . MnCO 3 was roasted and producing 200 nm manganese oxides nanorods. These results show that the low-grade manganese ore resources can be a potential source for production of manganese nanomaterials to fulfil the growing demand.

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