Wear mechanisms of carbon-base refractory materials in SiMn tap-holes : Part II : In situ observation of chemical reactions

Show simple item record

dc.contributor.author Steenkamp, J.D. (Joalet Dalene)
dc.contributor.author Pistorius, Petrus Christiaan
dc.contributor.author Tangstad, M.
dc.date.accessioned 2015-05-29T11:19:55Z
dc.date.available 2015-05-29T11:19:55Z
dc.date.issued 2015-04
dc.description.abstract The purpose of the study presented here is to determine to what extent chemical reactions between carbon-based refractory and slag or metal in the tap-hole of a SiMn furnace can contribute to wear of tap-hole refractory. The results of the study are reported in two parts. In Part I, thermodynamic calculations suggested that reaction between silicomanganese slag and carbon-based tap-hole refractory is possible, and experiments with nominally pure materials support this. However, practical refractory materials are by no means pure materials and contain secondary phases and porosity which can be expected to affect reaction with slag. In Part II, such reactions are examined experimentally, in cup and wettability tests, using commercially available carbon block and cold-ramming paste refractory materials and mainly industrial SiMn slag. Clear evidence was found of chemical reaction at approximately 1870 K (approximately 1600 C), forming SiC and, it appears, metal droplets. Both carbon block and ramming paste refractory reacted with slag, with preferential attack on and penetration into the binder phase rather than aggregate particles. The two types of carbon-based refractory materials showed similar extents of chemical reaction observed as wetting and penetration in the laboratory tests. The differences in refractory life observed practically in industrial furnaces should therefore be attributed to wear mechanisms other than pure chemical wear as studied in this work. en_ZA
dc.description.embargo 2016-04-30 en_ZA
dc.description.librarian hb2015 en_ZA
dc.description.sponsorship National Research Foundation of South Africa (Grant TP2011070800005). en_ZA
dc.description.uri http://link.springer.com/journal/11663 en_ZA
dc.identifier.citation Steenkamp, JD, Pistorius, PC & Tangstad, M 2015, 'Wear mechanisms of carbon-base refractory materials in SiMn tap-holes : Part II : In situ observation of chemical reactions', Metallurgical and Materials Transactions B, vol. 46, no. 2, pp. 668-679. en_ZA
dc.identifier.issn 1073-5615 (print)
dc.identifier.issn 1543-1916 (online)
dc.identifier.other 10.1007/s11663-014-0276-8
dc.identifier.uri http://hdl.handle.net/2263/45359
dc.language.iso en en_ZA
dc.publisher Springer en_ZA
dc.rights ©The Minerals, Metals & Materials Society and ASM International 2014.The original publication is available at : http://link.springer.com/journal/11663 en_ZA
dc.subject Wear mechanisms en_ZA
dc.subject Carbon-based en_ZA
dc.subject Refractory materials en_ZA
dc.subject SiMn tap-holes en_ZA
dc.subject Observation en_ZA
dc.subject Chemical reactions en_ZA
dc.subject Silicomanganese (SiMn)
dc.title Wear mechanisms of carbon-base refractory materials in SiMn tap-holes : Part II : In situ observation of chemical reactions en_ZA
dc.type Postprint Article en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record