Exploration of the way lowering seed liquor caustic ratio;

Thus,based on the actual pro-duction in our alumina factory,the causative factors of low seeding decomposition rate are an-alyzed,and in consequence,some effective measures are presented,such as lowering caustic ratio(a k )of refined sodium aluminate liquor feed,lowerin.

A prediction model based on PCA-WLSSVM is proposed to online measure the ratio of soda to aluminate(RSA) and the leaching rate(LR) in alumina manufacturing.

In Bayer process with bauxite,lower caustic moecular ratio digestion technology application was made possible by dilution of digesting pulp with seeded precipitation spent liquors.