本文叙述了一水硬铝石-高岭石型铝土矿浮选试验研究成果·当矿石的Al_2O_3/SiO_2为4.6—5时,经过浮选可得到Al_2O_3/SiO_2为8以上的精矿。Al_2O_3回收率为70—80％。本文还列举了精矿用Bayer法生产Al_2O_3的溶出试验及尾矿的综合利用试验结果。
Results of the beneficiation of the diaspore-kaolinite-bearing bauxite by flota-tion, from laboratory and small-scale continuous processing to pilot plant testingare described. Using raw materials with initial Al_2O_3/SiO_2 ratio of 4.6-5, theflotation concentrates finally attained a ratio greater than 8 with a recovery of Al_2O_3amounting to 70-80%. Results of digesting test for producing alumina by Bayer process, as well astests for making comprehensive utilization of the flotation tailings are also presen-ted.
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