| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing low alkali elution property slag where steelmaking slag is efficiently carbonated to the inside thereof without using a special large-sized device and also with reduced energy so as to become the low alkali elution property slag. <P>SOLUTION: Nanobubble-containing water obtained by dispersing CO<SB>2</SB>or a CO<SB>2</SB>-containing gas into water in the form of bubbles with a diameter of≤1μm is brought into contact with steelmaking slag. In the carbon dioxide nanobubble-containing water, since the bubbles (nanobubbles) of carbon dioxide can be stably present in the water for a long time, the water comprising carbon dioxide suitably infiltrates to the inside of the slag and is held for a long time, thus free CaO and free MgO at the inside of the slab can be suitably carbonated. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
