The extraction of alumina from bauxite is significantly impacted by the silica content of the ore — specifically the presence ...

Trump wants the U.S. to make more aluminum. In Louisiana, home to the only domestic producer of a material essential to that process, some say a ramp-up would take years and worsen pollution.

For every tonne of useful alumina produced from raw bauxite ore, refineries generate up to two tonnes of highly alkaline and saline ‘red mud’ waste, which is hostile to almost anything that ...

The excavation of bauxite reached a record high of 7,600,230 metric tonne during the financial year 2023-24, NALCO said ... The company's alumina refinery has produced 21,24,000 metric tonne ...