尾矿渣复合胶凝材料制备试验研究  

Study on preparation of composite cementitious material with tailings

作　　者：晏全香[1] 库建刚[1] 蒋丰明 YAN Quan-xiang;KU Jian-gang;JIANG Feng-ming(College of Zijin Mining,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福州大学紫金矿业学院

出　　处：《矿冶》2019年第4期98-102,125,共6页Mining And Metallurgy

基　　金：福建省自然科学基金资助项目(2017J01699)

摘　　要：以铁尾矿和铜矿渣为原料,成功制备了尾矿渣复合胶凝材料。通过分析球磨时间、胶砂比、料浆浓度、矿渣用量、碱激发剂、水泥熟料、养护条件与胶凝材料力学性能的关系,探讨矿渣胶凝体系制备过程影响因素,确定矿渣胶凝材料制备工艺条件。当矿渣胶凝体系配比为铜矿渣∶石灰∶石膏=80%∶4%∶16%、矿渣胶凝体系球磨时间25min,充填体中矿渣胶凝体系∶水泥熟料∶氢氧化钠∶铁尾矿=20%∶5%∶0.5%∶74.5%、料浆浓度为75%时为充填材料的最好配比,在此条件下,5%水泥填料,试块28d抗压强度为3.62MPa。试验中尾矿渣复合胶凝材料制备研究满足矿山充填胶凝材料的需求。Tailings slag composite cementing material was prepared by iron tailings and copper slag. By analyzing the relationship between ball milling time, sand ratio, slurry concentration, slag dosage, exciting agent, cement clinker, curing conditions and mechanical properties of gelling material, the factors influencing the preparation process of slag cementitious system were discussed, and the preparation process conditions of slag cementitious materials were determined. Under the best conditions when the ratio of slag cementitious system was copper slag∶limestone∶gypsum = 80%∶4%∶16%, slag cementitious system ball grinding time was 25 min, and the slag cementitious system in filling body was cement clinker:sodium hydroxide:iron tailings = 20%: 5%: 0.5%: 74.5%, slurry concentration was 75%, 5% cement filler was used and the 28 d compressive strength is 3.62 MPa. The preparation of tailings composite cementitious material in the experiment meets the needs of mine filling cementitious material.

关 键 词：铁尾矿 铜矿渣 综合利用 胶凝材料 制备工艺 

分 类 号：TH145[一般工业技术—材料科学与工程]