| 摘要 |
<p>PROBLEM TO BE SOLVED: To decrease wastes generated as unutilized materials, namely industrial wastes by renewing the wastes to a building material, which is effectively usable and effectively utilizing the wastes. SOLUTION: This baked building material block is obtained by compounding unutilized wastes much in impurities having <=0.6mm size and produced as by-products when a material containing 15-60wt.% melted material of sludge burned ash containing fine powder material having <=0.1mm size in an amount of 5-20wt.% and pegmatite are powdered and purified to produce sodium silicate which is raw material for ceramic industry with clay-like mineral and subjecting the resultant compound to mixing, kneading, forming and drying and baking the formed material at 700-1100 deg.C. Thereby, remarkable saving of burning energy can be achieved. According to the method, a building material utilizing <=80% of waste material as effective resource can be produced and utilization of waste material as resource and production at low cost and large effect are obtained.</p> |
