Study on the process of bauxite dissolution under pressure by potash
High-pressure dissolution of bauxite was carried out using potash mother liquor to investigate the effects of reaction temperature,dissolution time,potash concentration,ingredient molecular ratio and lime addition on the alumina dissolution effect.The results showed that under the conditions of reaction temperature of 280℃,potash concentration of 240 g/L,ingredient molecular ratio of 1.5,and reaction time of 1 h,the aluminum-silicon ratio in red mud decreased to 1.06,and the actual dissolution rate of Al2O3 could reach 64.61％.The addition of CaO will reduce the dissolution rate of Al2 O3,but the alkali content of red mud is also reduced at the same time,and the main form of silicon in red mud is KAlSiO4.
万方数据
维普
