Polyelectrolyte Mediated Dewatering of Mixed Mineral Dispersions
In the present work, the influence of coagulant, polymeric flocculant structure type and mode of addition on flocculation performance and dewatering behaviour of plant mineral waste tailings of diverse mineralogy (kaolin, quartz, gcethitedhematite feldspar, gibbsite, rutile, and Illite) is investigated. High molecular weight, non-ionic polyacrylamide homopolymer and anionic (acrylate) and cationic (quaternary acrylate) copolymers were used in orthokinetic flocculation of colloidally-stable, aqueous dispersion of negatively charged particles. It is demonstrated that, through prudent selection and mode of addition of polymer structure types, synergistic effect between certain cationic and anionic flocculants can be readily achieved, leading to significantly improved dewaterability of the heterogeneous mineral waste railings.
Flocculation Coagulation Dewatering Pulp Consolidation Thickening Mineral waste Tailings
J. Addai-Mensah J. Ralston
Ian Wark Research Institute, ARC Special Research Centre, University of South Australia, Australia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2087-2096
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）