Selection of sedimentation equipment for the Bayer Process an overview of past and present technology

Abstract

The Bayer Process relies heavily on sedimentation Equipment in Desilication, Liquor Clarification, Residue Disposal, Tertiary Seed Classification, as well as Caustization and Oxalate Removal. Over the past 20 years, sedimentation equipment design and operating philosophies have changed dramatically with the advent of feed slurry dilution, new flocculants, and robotic descaling. This paper will present and overview of the progression of Bayer Process sedimentation technology and current equipment options available.