Experimental Manufacturing of Ferromanganese Alloy from Man-Made Manganese-Containing Wastes
Tastanova A. Temirova S. Sukurov B. Biryukova A. Abdykirova G.
December 2023Multidisciplinary Digital Publishing Institute (MDPI)
Processes
2023#11Issue 12
The results of experiments on manganese pellets based on beneficiated manganese-containing sludge and the melting of ferromanganese alloy with their use are presented. Via beneficiating manganese-containing sludge (16.32% Mn), a concentrate with a manganese content of 35.2% was obtained. The composition of the charge used to prepare manganese pellets is proposed, and the conditions affecting their strength are determined. It was established that manganese is present in the composition of calcined pellets in the form of jacobsite MnFe2O4 and hausmannite Mn3O4. The formation of a phase of ferrobustamite (Ca0.79Fe0.21)SiO3, a ferrosilico-calcium binder that helps increase the strength of pellets, was found. Ferromanganese alloy was obtained as a result of the melting of calcined manganese pellets in a high-temperature Tamman-type unit. The Fe-Mn-Si alloy corresponds to the DIN 17 564 as-grade FeMn70Si in terms of manganese (63.76%) and silicon (17.21%) contents. The content of limiting impurity elements—carbon and phosphorus—in ferromanganese alloy is within acceptable limits. The structure of Fe-Mn-Si alloy and slag formed during their smelting process were studied.
Fe-Mn-Si alloy , manganese concentrate , manganese pellets , manganese-containing waste
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Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, 050000, Kazakhstan
Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University, Almaty, 050013, Kazakhstan
Institute of Metallurgy and Ore Beneficiation
Institute of Metallurgy and Ore Beneficiation JSC
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