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 […]
Alcoa formed an agreement with Nexans, a global cable producer, for the supply of primary aluminum produced using ELYSIS™ inert anode technology, which eliminates all direct greenhouse gas emissions from the traditional smelting process. “In the fight against climate change, solutions that support the world’s energy transition make a real difference,” said Vincent Dessale, chief […]
Vedanta Aluminium, the largest aluminum producer in India, achieved a new breakthrough in the design of a new potlining technology for its aluminum smelters. The Vedanta Lining Design is a patented, energy-efficient technique that reduces energy consumption by 200–250 KWh per tonne of aluminum produced, providing increased energy efficiency and enhanced lifespan of the smelting […]
Vedanta Limited, the largest diversified natural resources company in India, plans to to demerge its business units into independent “pure play” companies. The company stated that this will simplify Vedanta’s corporate structure and unlock value and attract investment into the expansion and growth of each of the businesses. More than 90% of Vedanta Ltd’s profits […]
Rio Tinto, Trimet, and Aluminium Dunkerque are partnering with Fives Group on a consortium project to develop carbon capture solutions for the aluminum industry. Primary aluminum production accounts for 2% of global greenhouse gas emissions, which corresponds to an average of 16.1 t CO2/t Al being emitted globally (in France, the average is less than 5 […]
South32 began an ambitious project to limit the amount of hydrogen fluoride (HF) being emitted from its gas treatment center (GTC) at its Hillside smelter in South Africa to 0.5 mg/Nm³ by April 2025. This will enable the smelter to comply with new environmental regulations. In order to achieve this goal, South32 is collaborating with […]
Aluminerie Alouette, based in Sept-Îles, Quebec, Canada, is investing in its aluminum smelting operations. These investments include upgrades to its anode baking furnaces and the planned installation of new potline technologies to address waste streams at the site. Established in 1992, Alouette is an independent aluminum producer. With over 850 employees and an annual production […]
Trimet Aluminium SE developed a new process control system for controlling the electrolysis furnaces in its aluminum smelters. The company plans to replace various existing control systems with this in-house developed control and monitoring system — called METRICS® — at its facilities in Essen, Hamburg, and Voerde, Germany, and Saint-Jean-de-Maurienne, France. This will enable the […]
