| 摘要 |
<p>PURPOSE:To obtain a cement clinker having low cost using a slag produced as a by-product as a main raw material while carrying out effective utilization of retaining heat of the slug by adding and blending a cement clinker raw material in state retaining temperature of the slag to a specific value or above with the slag produced as a by-product in high-temperature state in a metal refining process and burning and cooling the resultant blend. CONSTITUTION:A cement clinker raw material is added and blended in state retaining temperature of slag to >=600 deg.C with a slag produced as a by-product in high-temperature state in a metal refining process and the resultant blend is burned and then cooled. As the above-mentioned slag, blast furnace produced as a by-product in iron refining process is preferably used. A lime raw material, silica raw material or iron oxide raw material is preferably used as the cement clinker raw material in using the blast furnace.</p> |
