Recovery of Alumina from Sodium Hydroxide Leaching Solution by Precipitation with Hydrogen Peroxide
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초록
In order to recover pure alumina from balck dross, precipiatation experiments were done to the NaOH leaching solution of mechanically activated black dross. In this work, hydrogen peroxide was added to the synthic solution as a precipitating agent. Among some variables, the concentration of H2O2 and the volume ratio of H2O2 to solution showed a remarkable effect on the precipitation of aluminum hydroxide. At the optimum conditions, most of the aluminate was precipitated. Calcination of the aluminum hydroxide at 1200o C led to the formation of θ and α-alumina. The charactistics of the synthesized activated alumina was measured by XRD and EDS. The average particles size of the alumina was 3.73 μm.
Abstract
In order to recover pure alumina from balck dross, precipiatation experiments were done to the NaOH leaching solution of mechanically activated black dross. In this work, hydrogen peroxide was added to the synthic solution as a precipitating agent. Among some variables, the concentration of H2O2 and the volume ratio of H2O2 to solution showed a remarkable effect on the precipitation of aluminum hydroxide. At the optimum conditions, most of the aluminate was precipitated. Calcination of the aluminum hydroxide at 1200o C led to the formation of θ and α-alumina. The charactistics of the synthesized activated alumina was measured by XRD and EDS. The average particles size of the alumina was 3.73 μm.
참고문헌 (13)
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