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Qingyou Meng,Zhitao Yuan,Li Yu,Yuankai Xu,Yusheng Du 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.62 No.-
The activation mechanism of Pb2+ ions to ilmenite and the subsequent interaction with benzyl hydroxamic acid (BHA) were systematically investigated. The Pb2+ ions modification occurred via a chemical adsorption process, in which lead species interacted with iron hydroxyl compounds to form lead-containing complexes on the ilmenite surface. After lead ions activation, the surface of ilmenite became more active, and iron species and lead-containing complexes served as the main active sites to covalently bond with BHA in the form of metal-BHA chelate complexes. As a result, the BHA adsorption increased, giving rise to a concomitant increase in the floatability of ilmenite.