利恰得逊(Richardson)教授说,卡尔(Carr)的报告中说美国的铝厂需要安息角30～35°的粗粒氧化铝,而英国需要较大角度的粉末,如果他能解释一下理由将是有趣的。如果铝土矿溶出残渣中含铁量足够高的话,在经制团或烧结而极小心地制备高炉用原料时,似乎可能利 Professor Richardson said Carr’s report states that aluminum smelters in the United States require 30-35 degrees of repose of coarse-grained alumina, while Britain needs a larger-angle powder if he can explain the reasons It will be interesting. If the amount of iron in the bauxite leach residue is sufficiently high, it seems likely that when the raw materials for the blast furnace are prepared by the process of grouping or sintering