北京科技大学学报Issue(12)：1628-1635,8.
利用石灰干化污泥制备水泥对水泥性能的影响
Effect of utilizing lime mediated sludge to produce cement on cement performance
摘要
Abstract
Lime mediated sludge was used as partial replacement for cement raw materials to produce cement. The adding amount of lime mediated sludge ranges from 0 to 30%. The influence of lime mediated sludge on cement performance was investigated. It is shown that adding 15% of lime mediated sludge into cement raw materials can significantly improve the calcining performance, the mineral phase crystal structure and the clinker’s morphology, and the cement strength is also remarkably enhanced. The improvement capability of lime mediated sludge gradually declines with the increase of lime mediated sludge. When 30% of lime mediated sludge is added, the properties of the obtained cement are similar to those without adding sludge. Toxicity characteristic leaching test results indicate that after lime mediated sludge addition, heavy metal concentrations in clinker and cement are higher than those in clinker and cement without lime mediated sludge, while the leaching concentrations are very low, Cu, Zn, Pb, Cr and Ni contents in the leachate are all below 1 mg·L-1, which can meet the People’s Republic of China Standard GB 5085.3-2007, with no risks of secondary pollution.关键词
废弃物利用/污泥/石灰干化/水泥/熟料/重金属Key words
waste utilization/sewage sludge/lime drying/cement/clinker/heavy metals分类
资源环境引用本文复制引用
张坤,邢奕,洪晨,姜长禄,王志强,赵瑞雪..利用石灰干化污泥制备水泥对水泥性能的影响[J].北京科技大学学报,2013,(12):1628-1635,8.基金项目
国家自然科学基金资助项目(51104009)；北京市科技新星计划资助项目(Z111106054511043)；北京市优秀人才培养资助项目(2012D009006000003)；中央高校基本科研业务费青年人才培养基金资助项目(FRF-TP-12-011B)；昆明市科技计划资助项目(2012-02-09-A-G-02-0001) （51104009）
