an overview of optimizing strategies for flotation banks优化策略对上市银行的概述.pdfVIP

Minerals 2012, 2, 258-271; doi:10.3390/min2040258 OPEN ACCESS minerals ISSN 2075-163X /journal/minerals/ Article An Overview of Optimizing Strategies for Flotation Banks Miguel Maldonado, Rodrigo Araya and James Finch * Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada, H3A2B2; E-Mails: miguel.maldonado@mail.mcgill.ca (M.M.); RAraya@ (R.A.) * Author to whom correspondence should be addressed; E-Mail: jim.finch@mcgill.ca; Tel.: +1-514-398-1452; Fax: +1-514-398-4492. Received: 4 July 2012; in revised form: 23 August 2012 / Accepted: 12 September 2012/ Published: 10 October 2012 Abstract: A flotation bank is a serial arrangement of cells. How to optimally operate a bank remains a challenge. This article reviews three reported strategies: air profiling, mass-pull (froth velocity) profiling and Peak Air Recovery (PAR) profiling. These are all ways of manipulating the recovery profile down a bank, which may be the property being exploited. Mathematical analysis has shown that a flat cell-by-cell recovery profile maximizes the separation of two floatable minerals for a given target bank recovery when the relative floatability is constant down the bank. Available bank survey data are analyzed with respect to recovery profiling. Possible variations on recovery profile to minimize entrainment are discussed. Keywords: air profiling; mass-pull; peak air recovery (PAR); o