Influence of Impurities of Zircon Sand on the Microstructure of Fused Zirconia Grains for Continuous Casting of Steel Refractories  

作　　者：Andreas BORGER Johan LORICOURT Angelika PRIESE 

机构地区：[1]Center for Abrasives and Refractories Research and Development (C.A.R.R.D.) GmbH, Villach 9524, Austria [2]Imerys Fused Minerals Murg GmbH, Laufenburg 79725, Germany

出　　处：《China's Refractories》2018年第1期1-7,共7页中国耐火材料（英文版）

摘　　要：Certain impurities of zircon sands, especially alumina, titania, calcia and yttria cannot be completely re- moved in the production of fused zirconia and may have an influence on the corrosion resistance and other product properties of refractories for continuous casting of steel. In this paper, we present our findings on how impurities in raw materials end up in different stabilised zirconia refractory grains, in particular calcia-, magnesia- and yttria-stabilised zirconia. The microstructure （and phase composition） is affected by both the raw materials and the fusion conditions （furnace type and cooling technology）.Certain impurities of zircon sands, especially alumina, titania, calcia and yttria cannot be completely re- moved in the production of fused zirconia and may have an influence on the corrosion resistance and other product properties of refractories for continuous casting of steel. In this paper, we present our findings on how impurities in raw materials end up in different stabilised zirconia refractory grains, in particular calcia-, magnesia- and yttria-stabilised zirconia. The microstructure （and phase composition） is affected by both the raw materials and the fusion conditions （furnace type and cooling technology）.

关 键 词：ZIRCONIA ZIRCON IMPURITIES stabilisation MICROSTRUCTURE impurity phases 

分 类 号：TQ171.1[化学工程—玻璃工业] TQ174.758[化学工程—硅酸盐工业]