| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a reduction treatment method for a chromium oxide- containing substance capable of completely preventing an elution of Cr6+ from the chromium oxide-containing substances by treating the chromium oxide- containing substance such as a stainless steel refining slag, a chromium slag, a waste melting slag and a slag deposited refractory used for a stainless steel refining by an industrially simple method with an excellent economical property for a short time without increasing a volume of a material to be treated. SOLUTION: The chromium oxide-containing substance is laid on a treating place, a sulfur-containing slag in the molten state and/or a sulfur-containing slag in the high temperature state after solidification is placed thereon and water is sprayed to the sulfur-containing slag. The chromium oxide-containing substance is laid on a blast furnace slag skimming yard, a blast furnace slag in the molten state and/or a blast furnace slag in the high temperature state after solidification is placed thereon and water is sprayed to the blast furnace slag.</p> |
