铁尾矿制备免烧砖的研究  

Research on Preparation of Unfired Brick with Iron Tailings

作　　者：张增光 李峰 崔孝炜[1] 刘璇[1] 刘明宝[1] 乔成芳[1] 王亚强 狄燕清[1] 刘萍[1] Zhang Zengguang;Li Feng;Cui Xiaowei;Liu Xuan;Liu Mingbao;Qiao Chengfang;Wang Yaqiang;Di Yanqing;Liu Ping(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo University,Shangluo,Shaanxi 726000;Institute of Flexible Electronics,Northwestern Polytechnical University,Xi’an,Shaanxi 710129;Engineering Technology Research Center for Efficient Utilization of Metallurgical Mine Tailings(Shaanxi Daxigou Mining Co.,Ltd.),Shangluo,Shaanxi 726000)

机构地区：[1]商洛学院陕西省尾矿资源综合利用重点试验室,陕西商洛726000 [2]西北工业大学柔性电子研究院,陕西西安710129 [3]冶金矿山尾矿高效利用工程技术研究中心(陕西大西沟矿业有限公司),陕西商洛726000

出　　处：《非金属矿》2025年第1期93-95,共3页Non-Metallic Mines

基　　金：国家自然科学基金项目(22173056);陕西省重点研发计划(2023-YBSF-344);陕西省秦创原“科学家+工程师”队伍建设(2024QCY-KXJ-147);陕西省技术创新引导专项项目(2022QFY10-08);陕西高校青年创新团队-MOF基功能材料热化学创新团队(23JP042);商洛市科技局项目(2023-G-0015);企业项目(23HKY019)。

摘　　要：为解决尾矿固废大量堆积问题,以商洛大西沟铁尾矿为主要原料,粉煤灰、石膏为辅助原料,水泥为胶凝剂,采用压制成型法制备免烧砖。研究了水泥用量、粉煤灰用量、拌和水用量和成型压力对样品性能的影响。结果表明,铁尾矿、水泥、粉煤灰、石膏的质量比为57∶14∶23∶6,拌和水用量为10%,成型压力为20 MPa时,经自然养护28 d后,免烧砖样品抗压强度为33.4 MPa,满足JC/T 422—2007中MU25等级要求。In order to solve the accumulation problem of large amount of tailings solid waste,the iron tailings of Daxigou in Shangluo were used as the main raw materials,fly ash and gypsum as auxiliary raw materials,and cement as gelling agent,and the unfired bricks were prepared by pressing forming method.The effects of the amount of cement,fly ash,mixing water and molding pressure on the properties of the samples were studied.The results showed that when the mass ratio of iron tailings,cement,fly ash and gypsum was 57∶14∶23∶6,the amount of mixing water was 10%,and the forming pressure was 20 MPa,the compressive strength of the sample reaches 33.4 MPa after natural curing for 28 d,which met the MU25 grade requirement of JC/T 422—2007.

关 键 词：铁尾矿 粉煤灰 免烧砖 抗压强度 

分 类 号：TU522[建筑科学—建筑技术科学] X705[环境科学与工程—环境工程]