Abstract
An acid leaching method was adopted to remove the impurities of potassium and iron from the DI (diaspore-illite) type low grade bauxite acquired from Dengfeng city of Henan province, in order to provide a higher quality raw material for the refractories industry. The effects of sulfuric acid concentration, leaching temperature, reaction time and sulfuric acid to bauxite ratio on removal efficiency of impurities were investigated. The optimum experiment conditions were: sulfuric acid concentration of 7 mol/L, reaction temperature of 90 °C, reaction time of 4 h and sulfuric acid to bauxite ratio of 6 mL/g. Under these conditions, the removal efficiency of potassium and iron were 19.2 and 94.0%, respectively. The approach presented in this work is a promising process of comprehensive utilization of low grade bauxite.
Author supplied keywords
Cite
CITATION STYLE
Li, Z., Cao, Y., Han, G., Fan, G., & Huang, Y. (2018). Research on impurity removal of low grade bauxite. In Minerals, Metals and Materials Series (Vol. Part F4, pp. 23–27). Springer International Publishing. https://doi.org/10.1007/978-3-319-72284-9_4
Register to see more suggestions
Mendeley helps you to discover research relevant for your work.
