Leaching of Black Dross by Hydrochloric Acid Solutions
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Leaching of black dross with HCl solution was conducted to find a suitable process to recover valauble materials. In this work, the leaching behavior of the components was compared between black dross and the residues after water treatment. All the components except TiO2 in the black dross were dissolved by HCl solution in the experimental ranges. Treatment of the black dross with water to recover the salts has negative effect on the leaching of Al2O3, MgO and SiO2. The reactions occuring during the leaching were discussed. At an optimum leaching condition of 3 M HCl and 90oC, the leaching percentage of Al2O3, MgO and SiO2 was 85, 100 and 40%, respectively.
Abstract
Leaching of black dross with HCl solution was conducted to find a suitable process to recover valauble materials. In this work, the leaching behavior of the components was compared between black dross and the residues after water treatment. All the components except TiO2 in the black dross were dissolved by HCl solution in the experimental ranges. Treatment of the black dross with water to recover the salts has negative effect on the leaching of Al2O3, MgO and SiO2. The reactions occuring during the leaching were discussed. At an optimum leaching condition of 3 M HCl and 90oC, the leaching percentage of Al2O3, MgO and SiO2 was 85, 100 and 40%, respectively.
참고문헌 (29)
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