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| 矿山酸性废水中和渣制备建筑砌块 | |
| 引用本文： | 谢学报,杨建国,宁秋燕,陈泉源,韦彦斐,黄璐,孙福成.矿山酸性废水中和渣制备建筑砌块[J].环境工程,2012,30(1):70-73. |
| 作者姓名： | 谢学报 杨建国 宁秋燕 陈泉源 韦彦斐 黄璐 孙福成 |
| 作者单位： | 1. 东华大学环境科学与工程学院,上海,201620 2. 浙江遂昌金矿有限公司,浙江遂昌,323304 3. 浙江省环境保护科学设计研究院,杭州,310007 |
| 基金项目： | 国家自然科学基金，上海市自然科学基金 |
| 摘 要： | 为了实现矿山酸性废水中和渣资源化,采用硅酸盐水泥(32.5R和42.5R)、铝酸盐水泥3种胶凝材料固化中和渣制备建筑砌块。在抗压强度和浸出毒性测定的基础上,通过X-射线衍射分析、热重分析等实验手段,探究了水泥矿物水化及其与中和渣中主要物质作用机理。研究结果表明,当m(水泥)∶m(干污泥)∶m(水)=1∶0.5∶0.75时,3种胶凝材料制备免烧砖的抗压强度均达到25 MPa以上,明显高于普通黏土烧结砖。 |
| 关 键 词： | 中和渣 水泥 固化 建筑砌块 浸出毒性 |
PREPARATION OF BUILDING BLOCKS USING THE NEUTRALIZATION SLUDGE DERIVED FROM ACID MINE WASTEWATER |
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| Xie Xuebao,Yang Jianguo,Ning Qiuyan,Chen Quanyuan,Wei Yanpai,Huang Lu,Sun Fucheng.PREPARATION OF BUILDING BLOCKS USING THE NEUTRALIZATION SLUDGE DERIVED FROM ACID MINE WASTEWATER[J].Environmental Engineering,2012,30(1):70-73. | |
| Authors: | Xie Xuebao Yang Jianguo Ning Qiuyan Chen Quanyuan Wei Yanpai Huang Lu Sun Fucheng |
| Institution: | 1.School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China; 2.Suichang Gold Mine Co.,Ltd,Suichang 323304,China; 3.Environmental Science Research﹠Design Institute of Zhejiang Province,Hangzhou 310007,China) |
| Abstract: | In order to realize the recycling and reuse of the neutralization sludge derived from acid mine wastewater,building blocks were prepared by mixing this sludge and three typical cements including portland cement(32.5R and 42.5R),alumina cement and then curing at ambient temperature.Based on the compressive strength measurements and leaching tests,the interaction mechanism between the sludge and cement was studied using X-ray diffraction and thermal analysis techniques.The experimental results showed that the compressive strength of three typical cement solidified sludge exceeded 25 MPa at a cement/dry sludge/water ratio of 1:0.5:0.75,obviously higher than that of common calcined clay bricks. |
| Keywords: | neutralization sludge cement solidification building block leaching test |
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