- 目录
- 新型墙体材料与施工
- 首页
砂石矿山固废制备烧结砖试验研究
作者：祝志雄1，解晓宁2，应晓猛1，俞毅1，刘阳1
（1.浙江省建筑材料科学研究所有限公司，浙江 杭州 311122；2.中国新型建材设计研究院有限公司，浙江 杭州 310022）
摘要：砂石矿山固废是机制砂石骨料生产过程中产生的固体废弃物，需要有更多的资源化处理处置方法以满足砂石矿山绿色发展的要求。以主要化学成分为Si2O3、Al2O3和Fe2O3等的砂石矿山固废为单一制砖原料，通过烧结砖制备试验，研究了砂石矿山固废样品的化学成分、挤出成型性能和烧结性能。结果表明，5个砂石矿山固废样品中，HF、HQ和ZH 3个样品不仅化学成分和挤出成型性能基本满足制砖要求，烧结后抗压强度分别为11.8、18.3、19.4 MPa，吸水率分别为16.9％、15.6％、15.9％，烧成总收缩率分别为2.39％、2.52％、3.72％，均符合GB 5101—2017《烧结普通砖》要求，用其做为制砖塑性的原料，具备在烧结砖行业进行资源化利用的技术可行性。
关键词：砂石矿山；固废；烧结砖；挤出成型；烧结性能
中图分类号：TU522.1 文献标识码：A 文章编号：1001-702X（2022）09-0123-04
Experimental study on preparation of sintered brick from solid waste of sandstone mine
ZHU Zhixiong1，XIE Xiaoning2，YING Xiaomeng1，YU Yi1，LIU Yang1
（1.Zhejiang Building Materials Institute Science Research Co. Ltd.，Hangzhou 311122，China；
2.China New Building Materials Design and Research Institute Co. Ltd.，Hangzhou 310022，China）
Abstract：The solid waste of sand and gravel mines is the solid waste produced in the production of machine-made sand and gravel aggregates. More resource-based treatment and disposal methods are needed to meet the requirements of green development of sand and gravel mines. In this paper，the chemical composition，extrusion molding properties and sintering properties of the sand and stone mine solid waste samples were investigated through the sintering brick preparation test，using the sand and stone mine solid waste as a single brick raw material with the main chemical components of silicon oxide，aluminum oxide and iron oxide. The results show that among the five sandstone mine solid waste samples，the chemical composition and extrusion molding performance of HF，HQ and ZH not only basically meet the requirements of brick making，but also the compressive strength after sintering is 11.8，18.3 and 19.4 MPa，the water absorption is 16.9%，15.6% and 15.9% respectively，and the total shrinkage rate after sintering is 2.39%，2.52% and 3.72% respectively，which can also meet the requirements of GB 5101—2017“Sintered ordinary bricks”. Therefore，they can be used as plastic raw materials for brick making and have the technical feasibility of resource utilization in the sintered brick industry.
Key words：sandstone mine，solid waste，sintered brick，extrusion molding，sintering properties