In‐Depth Microstructural Evolution Analyses of Cement‐Bonded Spinel Refractory Castables: Novel Insights Regarding Spinel and CA 6 Formation - Sako, Eric Y.; Braulio, Mariana A. L.; Zinngrebe, Enno; van der Laan, Sieger R.; Pandolfelli, Victor C. (Journal of the American Ceramic Society, 2012)