Sizing an Organic Control System for the Bayer Process

Removal of carbonate and oxalate pollutants in the Bayer process using thermal and chemical techniques

“…Carbonate and oxalate pollutants enter into the Bayer process through bauxite, lime and sodium hydroxide solution and cause a number of problems in alumina production cycle (Sonthalia et al, 2013;Pulpeiro et al, 1998;Whelan et al, 2003;Ellis et al, 2002;Pearson and The, 1985). Impurities in the solution can considerably affect crystal nucleation and growth (Cao et al, 2009).…”

“…Bauxite and lime used in the process contain carbonate salts and organic compounds. These materials are entered into the sodium aluminate solution and produce carbonate and oxalate pollutions and over time, their concentration in the solution is increased in a cyclic trend (Pulpeiro et al, 1998;Machold et al, 2011).…”