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Title: PROCESSING OF MANGANESE-CONTAINING WASTES TO PRODUCE MANGANESE PELLETS FOR FERROALLOY PRODUCTION
PROCESSING OF MANGANESE-CONTAINING WASTES TO PRODUCE MANGANESE PELLETS FOR FERROALLOY PRODUCTION

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Aisha Tastanova ; Yerzhan Kuldeyev; Gulnar Abdykirova; Alla Biryukova; Saniya Temirova
10.5593/sgem2023/4.1/s18.24
10.5593/sgem2023/4.1
1314-2704
978-619-7603-59-0
English
23
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Recycling
At various stages of processing manganese ores, significant volumes of finely dispersed manganese-containing raw materials are formed. Development of technological solutions is required for their use in metallurgical processes.
The aim of the study was to develop technologies intended to beneficiate manganesecontaining sludge with the fraction of less than 5 mm and to obtain pellets suitable to be melted into ferromanganese on their basis.
The developed beneficiation process flow for manganese sludge includes the screening processes into size classes: - 2.5+1.25; - 1.25 +0.071 and -0.071 + 0 mm, beneficiation in jigging machines of - 2.5+1.25; - 1.25 +0.071 mm classes and concentration on the table of -0.071 + 0 mm to get manganese concentrate containing 29.17 % Mn. The combined manganese concentrate was further subjected to dry magnetic separation that increased the Mn content to 35.2 %.
Manganese-containing pellets were obtained using a high-speed mixer-granulator manufactured by Eirich. Technological parameters were determined for the pellet production based on the composition consisting of manganese concentrate, small fractions of special coke, ferrous forms of diatomite and lime. It was found that manganese was present in the composition of pellets burned at 1170oC in the form of jacobsite MnFe2O4 and hausmannite Mn3O4. The ferrobustamite (Ca0.79Fe0.21)SiO3 phase was also formed, which contributes to an increase the strength of the products. Compressive strength of the obtained pellets was 33.7 kg/pellet. Melting temperature of annealed pellets was 1200°С. The obtained pellets were suitable to melt ferromanganese alloys.
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The work is performed with financial support from the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (grant AP09258880).
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https://doi.org/10.5593/sgem2023/4.1/s18.24
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
183-190
03 - 09 July, 2023
website
9192
manganese-containing wastes, beneficiation, manganese concentrate, pellets, strength