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To study the sweetening process of diasporic bauxite,Al(OH)3 obtained from the direct carbonization of unrefined sintering solution was used as the additive and its performance was compared with that of the conventionally used gibbsite.

分别以烧结法粗液直接进行深度碳分所得到粗氢氧化铝和工业上常用的三水铝石矿作为添加剂,进行了一水硬铝石矿增溶溶出过程的对比研究,主要考察了增溶温度、添加剂添加量和增溶时间等因素对溶出效果的影响,同时对增溶溶出矿浆与常规拜耳法溶出矿浆的沉降性能进行了对比研究。

The results showed that Weipa ore is gibbsite and its leaching efficiency is high when digested at higher than 200 ℃,so applicable to sweetening ore in digestion process,under conditions that the sweetening process is controlled in the range of 195～200 ℃ for 15～20 min and the dosage of Weipa .

结果表明:韦帕矿为三水铝石矿,在200℃以上溶出时,浸出率较高,适宜作为增溶溶出过程的后加矿。