red mud

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    Advances in Processing Alumina Refinery Bauxite Residue Waste

    By Alton Tabereaux, Contributing Editor. Bauxite residue is an insoluble solid waste by-product generated after the digestion of gibbsitic bauxite ore with sodium hydroxide at elevated temperature and pressure in the Bayer process for the extraction of alumina. During the digestion process, aluminum minerals react with caustic soda process liquor to form soluble sodium aluminate […]

  • bauxite residue, also known as red mud

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    Hydro Partners with Wave to Recover Minerals from Red Mud

    Hydro’s Alunorte alumina refinery signed a contract with Wave Aluminium to build a plant in Brazil that will work to address the challenges of bauxite residue — also known as red mud. The new plant will process bauxite residue, aiming to recover commercially valuable materials. Bauxite residue is generated after the bauxite ore has been processed […]

  • The Tailings Dry Backfill method replaces the need for raising and building new dams used in traditional methods, improving safety and environmental performance.

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    Hydro Pioneers Sustainable Solution for Red Mud Disposal

    Hydro has developed and implemented a new method for the final disposal of bauxite residue (also known as red mud), which the company has been testing at its Mineração Paragominas bauxite mine in the northern state of Pará, Brazil. This pioneering technology, called Tailings Dry Backfill, replaces the need for raising and building new dams […]

  • Fig 1 Red Mud Pond Stade-NEW

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    ARTICLE: Addressing the Challenge of Bauxite Residue

    By Alton Tabereaux, Contributing Editor. The largest waste by-product generated in the Bayer bauxite refining process is bauxite residue, commonly called red mud. An enormous quantity of caustic red mud is generated worldwide every year, posing a very serious and alarming environmental and safety problem. The storage of red mud is a challenge for alumina […]