老挝某红土型铝土矿矿石溶出性能研究

Digestion Performance of a Lateritic Bauxite Ores from Laos

通过对老挝某铝土矿矿石溶出工艺的试验研究,得出该矿石的适宜溶出条件为溶出温度150℃,溶出时间40 min,石灰添加量3%,循环母液苛性碱质量体积浓度220 g/L,母液氧化钠与氧化铝的物质的量之比3.40,配料固含量350 g/L,配料中氧化钠与氧化铝的物质的量之比1.45。在此条件下Al2O3的溶出率达80%。

Through the research on the digestion process of a bauxite ores from laos,found the suitable digestion conditons to this kind ore： under the conditions of digestion temperature 150 ℃,digestion time 40 min,addition of lime 3%,concentration（m/V） of circulating mother liquor caustic alkali 220 g/L,molar ratio of mother liquor sodium oxide to alumina 3.40,proportioning solid content 350 g/L,proportioning molar ratio of sodium oxide to alumina 1.45,the digestion rate of Al2O3 can achieve to 80%.