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6910032 
Journal Article 
CHROMIUM-FREE SPINEL BONDED CASTABLES VERSUS REBONDED FUSED GRAIN BASIC BRICKS 
Oprea, G; Zargar, H; Oprea, C; Lodha, R; Troczynski, Tom; Verhelst, D; , 
2014 
AMER CERAMIC SOC 
WESTERVILLE 
1297-+ 
WOS:000348596100219 
Chromium-free spinel bonded basic castables made using our novel chrome-free binding system and fired at as low as 1450 degrees C have been scaled up to industrial size. Trial refractories were installed in the lining of a Bottom Blown Oxygen Converter (BBOC) used for Pb-Ag cupellation. Their life in service was compared with rebonded fused grain (RFG) basic bricks. The used brick samples were analyzed on the basis of their physical, chemical and mineralogical property changes resulting from impregnation and reactions with the molten slag. The variations in properties from the hot to cold faces were correlated to their performance during use. The results showed that the physical properties, micro-and macrostructures of the cast bricks, made with the newly developed chromium-free binder system, were less affected by slag penetration and corrosion than the RFG magnesia-chrome bricks, usually fired above 1720 degrees C. 
Goski, DG; Smith, JD; 
978-1-118-83703-0 
13th Unified International Technical Conference on Refractories (UNITECR) 
Victoria, CANADA