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The effect of dolomite addition on the properties of sinters produced from a high aluminous iron ore
Author(s) -
Panigrahy Sarat C.,
Rigaud Michel A. J.,
Dilewijns Jozef
Publication year - 1985
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.198500593
Subject(s) - dolomite , metallurgy , sintering , materials science , softening , iron ore , blast furnace , drop (telecommunication) , mineralogy , composite material , geology , engineering , mechanical engineering
This study provides a systematic approach to an evaluation of the sinter properties with increased MgO addition for superfluxed sinters produced from a high aluminous ore. The investigation revealed that part or full replacement of limestone by dolomite in the sinter mix leads to a drop in sinter cold strength, reducibility and production rate, but has a favourable influence on low‐temperature reduction strength and probably better softening and meltdown properties. The change in sinter mineralogy due to the MgO addition has a paramount influence on the sinter properties. The Gua iron ore having a high alumina content, is easily amenable to sintering and the sinters produced can constitute a good burden material because of their high reducibility, good cold and hot‐strength characteristics. Improved production rates can be expected by choosing dolomites having a smaller crystal size or choosing other suitable MgO‐bearing materials. A high circulating load should be expected while producing MgO‐bearing sinters.