Effect of ore from the Mikhailov Mining-Concentration Combine on the quality of Magnitogorsk sinter

Lyadova, V. Ya.; Lekin, P. V.; Khodak, L. Z.; Malysheva, T. Ya.; Sokolov, G. A.; Yusupov, R. B.; Shcherbakov, V. S.

doi:10.1007/bf00733121

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“…The number of silicate bonds in the sinter is determined by its basicity (CaO/SiO2 ratio or (CaO+MgO)/(SiO2+Al2O3)). For example, at basicity values below 1.6-2.2, the amount of flux in the agglomerate is not sufficient for the formation of silicoferrite in its entire volume, according to the authors [9]. The addition of limestone, lime, or dolomite to the sinter charge makes it possible to obtain a fluxed sinter with a high basicity.…”

Section: Introductionmentioning

confidence: 99%

Study of Softening Temperature Range of Agglomerate Depending on its Structure and Phase Composition

Dmitriev,

Vyaznikova,

Vitkina

et al. 2023

DDF

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The initial and final softening (melting) temperatures of redesigned iron ore agglomerates with basicities from 1.2 to 3.0, obtained under laboratory conditions, were investigated. The chemical and phase compositions of the laboratory agglomerates, their microstructures and local chemical compositions, the temperatures at the beginning and end of softening (melting), and the temperature interval of softening were studied. Dependencies of the influence of the basicity of iron ore agglomerates on their softening temperature interval, depending on the proportion of phase components, were obtained. It is shown that as the basicity and proportion of silicoferrite SFCA phases increase, the temperatures at the beginning and end of the softening increase and reach a maximum of 1200 and 1312 °С, respectively (at the basicity of the agglomerate of 1.8), after which the temperatures decrease. Simultaneously, the softening interval increased from 73 to 112 °C.

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Section: Introductionmentioning

confidence: 99%