폐 금속 광미에서 산종류 및 농도에 따른 Mg 용출 특성 비교

초록

In this study, the leaching characteristics of magnesium from mine residue by acid leaching method was studied. First,It was confirmed the effect of the particle size. The particle size was selected 80 mesh in consideration of the leachingamount and recycling rate of Mg. And after, It was compared to the leaching characteristics of magnesium by H2SO4,HCl and HNO3. Among them, leaching efficiency of H2SO4 was best. After the experiments were conducted with H2SO4. The effect of various parameters such as acid concentration, reaction temperature, and liquid/solid ratio on the leachingprocess were investigated. It was determined that the leaching amount of magnesium increased with reaction acidconcentration, temperature, and liquid/solid ratio, and decreasing particle size. Maximum leaching amount of magnesiumwas obtained at the condition of particle size blow 80 mesh, temperature 80oC, 6 M H2SO4, 10/1 liquid/solid ratio, 6 hof reaction time and 180 rpm.

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