화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.62, 209-216, June, 2018
DOI10.1016/j.jiec.2017.12.059  Export Citation
Study on the activation mechanism of lead ions in the flotation of ilmenite using benzyl hydroxamic acid as collector
Qingyou Meng, Zhitao Yuan†, Li Yu, Yuankai Xu, and Yusheng Du
  • School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
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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.
Keywords:Ilmenite;Adsorption;Lead ions;Surface activation;Flotation
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