ELUTION CONTROL METHOD OF HEXAVALENT CHROMIUM FROM SLAG AND SLAG

摘要

PROBLEM TO BE SOLVED: To readily control elution of hexavalent chromium from a chromium-containing slag.SOLUTION: An elution control method of hexavalent chromium from a slag is a method for controlling elution of hexavalent chromium from a Cr-containing slag and comprises allowing 50-80 mass% Cr of total Cr contained in the slag to exist in the form of MgOCrOor MnOCrO, allowing ≥3 mass% Cr to be contained in M. Fe in the form of a mineral phase containing the Cr and allowing the remaining Cr to exist in a non-CrOform.