摘要
通过试验比较了“湿法造粒-烧结”和“干化-烧结”两种利用城市生活污泥烧结制陶粒的工艺流程可行性,分析了工艺流程和原料配比对污泥陶粒的产品强度、吸水率和表观密度等性能指标的影响,实验结果表明:“湿法造粒-烧结”工艺产品不能达到陶粒产品的强度和吸水率要求,污泥“干化-烧结”工艺能够得到合格的产品,且不会造成二次污染,综合考虑产品性能与经济性,“干化-烧结”工艺适宜的物料配比:干污泥50%,添加剂A30%～40%,添加剂B10%～20%。
The feasihility of two technologies of making haydite by sintering municipal sewage sludge （＂wet processing sintering＂ and ＂drying-sintering＂） was studied. The influences of teehnologic~ process and mixture ratio on the compression strength, hygroscopic coefficient and density of haydite were analyzed. The result showed that the ＂drying-sintering＂ technology was more suitable, and the proper mixture ratio was 50% dry sludge, 30%-40% additive A and 10%-20% additive B. The environmental security of product was also testified.
出处
《有色冶金设计与研究》
2007年第2期210-214,共5页
Nonferrous Metals Engineering & Research
关键词
城市生活污泥
陶粒
湿法
干化
烧结
Municipal Sewage Sludge
haydite
wet processing
drying
sintering
