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美国密执安工业大学研制的静态充填式浮选柱,可成功地将石油飞灰分离成碳和灰分。这种飞灰含有约35%的碳和65%的灰,卡鲍温公司将从中回收金属钒和其它有价值的产品。该公司利用两个相同的充填式浮选柱,并采用中矿再磨流程使连生颗粒解离,可从固含量30%的矿浆给矿中回收高品位的碳产品,同时还可提高含有有价值的金属的灰的回收率。产品中碳的烧失量达95%以上,灰的回收率也已超过98%。目前,已应允阿尔伯塔选矿厂进行工业化应用试验,每天处理飞灰100吨以上。
The static filled flotation column developed by the Michigan Institute of Technology successfully separates petroleum fly ash into carbon and ash. This fly ash contains about 35% carbon and 65% ash, from which Caboolt will recover metallic vanadium and other valuable products. The company uses two identical Fill Flotation columns and uses a mid-mine regrinding process to dissociate even particles to recover high-grade carbon products from a 30% solids slurry of ore, Recycling of valuable metal ash. Loss of carbon products in the combustion of more than 95%, ash recovery rate has also exceeded 98%. At present, Alberta beneficiation plant has been promulgated for industrial application test, handling fly ash more than 100 tons per day.