Alcoa has announced the permanent closure of its Kwinana alumina refinery in Western Australia (WA) following a curtailment of production in June last year. The decision was influenced by factors such as facility age, scale, operating costs, market conditions and bauxite grade challenges. The permanent closure of Kwinana's facility, which has an annual capacity of 2.2 million tonnes (mt), will reduce Alcoa's global consolidated refining capacity to 11.7mt. As of now, the Kwinana refinery employs around ...