Primary Leaching Process 2c 620 X 400 Mm

As an alkaline leaching method, roasting-leaching process is a potential way to separate silica and alumina in primary alumina-/silica-bearing minerals (herbert and hans, 1960, luo et al., 2016, qiu et al., 2004, rayzman et al., 2003, smith, 2009).After roasting at 980 c, the silica from the decomposition of kaolinite can be selectively extracted atmospherically by alkaline solution, and.