Research of Al and Fe Leaching Rate in the Process of Slag Leaching by Hydrochloric Acid

Guang Qiang Mang; Ming Cheng

doi:10.4028/www.scientific.net/AMM.675-677.1417

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 675-677Research of Al and Fe Leaching Rate in the Process...

Research of Al and Fe Leaching Rate in the Process of Slag Leaching by Hydrochloric Acid

Abstract:

Smelting slag from mineral process and blast furnace process to vanadium titanium magnetite is a kind of precious secondary resource in which TiO₂ content is higher than 20%. Taking titanium-bearing blast furnace slag in Panzhihua region as research object, this paper analyzes four factors that affect the leaching rate of Al and Fe. The four factors are reaction temperature, reaction time, acid concentration, and the ratio of acid and slag. The conclusion drawn from hydrochloric acid leaching experiment is the factor that causes greatest effect to leaching rate of Al and Fe is reaction temperature, then reaction time follows. Acid concentration and the ratio of acid and slag cause insignificant affect. Appropriate leaching condition is 5h reaction time, 5mol/L hydrochloric acid concentration, 90°C~100°C reaction temperature and 1.2 the ratio of acid and slag. Max leaching rate of Al and Fe is 78.5% and 65.8% respectively.

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Periodical:

Applied Mechanics and Materials (Volumes 675-677)

Pages:

1417-1420

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.675-677.1417

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Online since:

October 2014

Authors:

Guang Qiang Mang, Ming Cheng

Keywords:

Al, Blast Furnace Slag, Fe, Leaching Rate

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