Emirates Global Aluminium (EGA), headquartered in the United Arab Emirates (UAE), is an integrated aluminum producer, with capabilities ranging from bauxite mining to smelting, casting, and recycling. Its aluminum smelting capabilities include two smelters in Al Taweelah, Abu Dhabi, and in Jebel Ali, Dubai, with total production of 2.73 million tonnes in 2023. Within its […]
Editor’s Note: Light Metal Age has repeatedly published articles on bauxite residue (red mud), including the highly informative February 2024 article by Alton Taberaeux that described some of the latest trends in red mud processing.1 This editorial and selection of patents on red mud valorization supplements this archive, as the field of coping with the […]
Alumtek Minerals (AM), based in Australia, recently completed research and development on bauxite residue waste, commonly known as red mud, which has resulted in the development of a technology to extract critical raw materials. Following a collaboration with Cement Australia, AM developed a supplementary cementitious material (SCM) that meets the stringent Australian Standard AS3582.4 and has […]
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 […]
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 […]
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 […]
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 […]
