Features of chemical-mineralogical composition and processing properties for medium-ferrous bauxites

The features of chemical-mineralogical composition and processing properties of bauxites from Iksinsk and Severoonezhsk deposits are investigated in the paper. It is found that the studied bauxites are coarsely dispersed and low-dispersive, high-alumina clay raw materials with a high content of colo...

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Published inMATEC Web of Conferences Vol. 85; p. 1025
Main Authors Govorova, L.P., Vakalova, T.V., Shvagrukova, E.V., Reshetova, A.A., Potapova, A.P.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2016
Subjects
Aluminum oxide
Bauxite
Bayer process
Boehmite
Chemical composition
Clay minerals
Coloring
Compressive strength
Dispersion
Gibbsite
Kaolinite
Mineralogy
Organic chemistry
Raw materials
Sintering
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Summary:The features of chemical-mineralogical composition and processing properties of bauxites from Iksinsk and Severoonezhsk deposits are investigated in the paper. It is found that the studied bauxites are coarsely dispersed and low-dispersive, high-alumina clay raw materials with a high content of colouring oxides. According to their mineralogical composition, Iksinsk and Severoonezhsk bauxites are boehmite-hydrargillite-kaolinite clay bauxites. Moreover, Iksinsk bauxite samples are characterized by the total absence of quartz impurities. The samples of plastic molding based on Iksinsk bauxites are fully sintered at 1500 °C with the formation of strong structures with a compressive strength of 70-120 MPa (depending on the variety of bauxites). The samples based on Severoonezhsk bauxites are fully sintered at 1450 °C, and they are characterized by a compressive strength to 70 MPa in the sintered state.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/20168501025