製鋼スラグ中のクロムの化学状態と溶出特性

概要

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In order to characterize the chemical state of chromium and the dissolution characteristics of chromium from a slag used for stainless steel production, X-ray absorption near edge structure spectra were utilized for analyzing the chemical state of chromium in the slag and solution analyses were carried out for determining the dissolved amount of chromium. The results indicate that the amount of Cr(VI) in the slag was increased by annealing in air, and the amount of chromium dissolved from the slag annealed in air into aqueous solution was higher than that from the slag annealed under low partial pressure of oxygen. Since the amount of Cr(VI) in the slag measured by XANES was not changed after dissolution operation, it is considered that Cr(VI) dissolved in the solution originated from Cr(VI) in the surface layer of the slag annealed in air.報文Original Paper
東北大学の論文