DBPapers
DOI: 10.5593/sgem2017/11/S04.129

RESEARCH OF PHYSICAL AND MECHANICAL PROPERTIES OF BRIQUETTES, CONCENTRATED FROM LOOSE HIGH-GRADE IRON ORES

V.B. Kuskov, Y.V. Kuskova
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-98-8 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 11, 1011-1016 pp, DOI: 10.5593/sgem2017/11/S04.129

ABSTRACT

It is known that the medium-grade and low-grade iron ores before the direct use in metallurgical furnaces are almost always concentrated. For ore-grain release all run-of-mine ore is crushed and milled. The result of such operations is a finely ground concentrates, which are then subjected to clotting. Among the known methods of clotting of the wide-spread high-temperature methods - sintering and pelletizing followed by baking raw pellets. During these processes, there is a partial removal of detrimental impurities (sulfur, phosphorus, etc.). However, for loose rich iron ore with low content of detrimental impurities may be preferable to conduct the "cold" briquetting using small amounts of binding substances (such as molasses or carboxymethyl cellulose water solution). This method allows obtaining a lumpy product of high quality without additional costs for the sintering or baking of raw products. The article sums up the results of research of physical and mechanical properties of briquettes, concentrated from loose high-grade iron ores with different binding substances. Testing of samples for uniaxial compression, falling, shatter and wear were conducted, including drawing of strength characteristics. The test results show that produced briquettes meet the requirements (to use it in the blast-furnace burden).

Keywords: clotting, loose high-grade iron ores, binding substance, physical and mechanical

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