微波场焙烧铝土矿的溶出性能研究

Research on Dissolution Performance of Roasted Bauxite under Microwave Field

考察了微波场焙烧后贵州铝土矿的溶出性能,得到了最佳溶出条件:温度为200℃,时间45 min,碱液浓度为210 g/L。微波焙烧矿与原矿相比较,溶出温度降低了60℃,溶出时间缩短了15 min,苛碱浓度降低了20 g/L,溶出率也得到了较大程度提高。

The dissolution performance of Guizhou bauxite under microwave field was investigated. The best dissolution conditions were confirmed as follows： temperature of 200 C, time of 45 min, caustic alkali concentration of 210 g/L. Compared with the raw ore, the roasted ore has a dissolution temperature, dissolution time and caustic alkali concentration decreased by 60 ~C, 15 min and 20 g/L, respectively. The dissolution rate has been largely improved as well.