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8. Bayer Process Impurities and Their Management

  • 2022
  • OriginalPaper
  • Chapter
Published in:
Author
Steven J. Healy
Published in
Smelter Grade Alumina from Bauxite
Publisher
Springer International Publishing

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Abstract

This chapter delves into the intricate management of impurities in the Bayer process, crucial for the production of metallurgical alumina. It begins by defining impurities as substances that negatively impact the cost, efficiency, and productivity of alumina refineries and subsequent aluminium reduction processes. The Bayer process is outlined, highlighting its role in separating alumina from non-alumina minerals in bauxite and transforming it into a usable product. Preliminary impurity management activities in bauxite mining, such as exploration, mine planning, and beneficiation, are discussed as essential precursors to refinery-based management. Once bauxite enters the refinery, the chapter details the processes of digestion, separation, and filtration used to prevent non-alumina minerals from contaminating the pregnant liquor. This detailed exploration of impurity management in the Bayer process offers valuable insights into the complexities and costs associated with maintaining high-quality alumina production.
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previous chapter Hydrate Precipitation, Classification and Filtration
next chapter Bayer Process—Water and Energy Balance
Title
Bayer Process Impurities and Their Management
Author
Steven J. Healy
Copyright Year
2022
Book
Smelter Grade Alumina from Bauxite

Print ISBN: 978-3-030-88585-4

Electronic ISBN: 978-3-030-88586-1

Copyright Year: 2022

DOI
https://doi.org/10.1007/978-3-030-88586-1_8
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