会议专题

Alumina Recovery and Cash Flow 4 modes of operation and their economic and environmental impact

Most alumina refineries target their operation at high alumina recovery and/or lowest cash cost. Since these modes of operation inherently limit production, there is scope to improve refinery economics. This paper describes how a refinery can determine its most economic digestion liquor ratio and calculate the related cash flow improvement. Since the most economic mode of operation implies a lower alumina recovery from bauxite, there is scope to improve refinery sustainability. This paper describes how a refinery can recover the alumina that is lost in digestion and clarification, by re-digesting settler mud in so-called M2M-Units. The cost of additional alumina generated in M2M-Units is very low since it is produced from alumina that would have otherwise been lost with the mud. This paper describes M2M-Units and how they enable a refinery to increase production and cash flow and at the same time improve environmental performance.

M. Brouwer

Alcor Technology BV, The Netherlands

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

334-347

2010-11-25(万方平台首次上网日期,不代表论文的发表时间)