New flocculants for improved processing of high silica bauxites
The production of alumina from bauxite requires an effective solid-liquid separation in gravity thickeners to generate liquor containing low amounts of suspended solids. As the amount of reactive silica in the bauxite increases, this separation often becomes more difficult due to the formation of desilication products (DSP). The presence of DSP can have a detrimental effect on various areas of alumina production and cannot be overcome using existing flocculants. As a result, new polymers have been developed that significantly improve the flocculation of suspended DSP solids when added to the slurry in combination with conventional flocculants. These polymers have been found to be applicable for slurries generated by the digestion of gibbsitic and diasporic bauxites in the Bayer Process. Recent developments demonstrating the performance benefits will be presented.
Flocculant DSP, High Silica Diaspore Clarification
Dai, Q., Davis, M.J Zhang, R
Cytec Industries Inc., 1937 West Main Street, Stamford, CT 06904, USA
国际会议
XVIII International Symposium of ICSOBA(第18届国际铝土矿、氧化铝及铝工业学术年会)
郑州
英文
200-204
2010-11-25（万方平台首次上网日期，不代表论文的发表时间）