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EXPERIMENTAL STUDY OF USING TAILINGS OF HEMATITE IN WESTERN HUBEI TO PRODUCE NON-BURNED AND NON-AUTOCLAVED BRICKS
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摘要: 利用鄂西赤铁矿尾矿为主要原料制备免烧免蒸砖，对赤铁矿尾矿渣与建筑标准砂的用量进行配比试验，并考察成型水分、成型压力和外加剂用量对制品抗压强度的影响。试验结果表明，在尾矿渣掺量为78%、标准砂10%、水泥10%和石膏2%的配合比下，且成型水分15%、成型压力20MPa和外加剂三乙醇胺0.01%的最佳条件下，制备的免烧免蒸砖制品抗压强度达到15.9MPa，可满足JC/T4222007《非烧结垃圾尾矿砖》建筑材料强度要求，提高了鄂西赤铁矿尾矿渣的综合利用程度。Abstract: The ratio of hematite tailings from western Hubei Province, as the main material in preparation of nonburned and non-autoclaved bricks, to standard building sands were studied in this paper. In addition, the effects of forming water contents, forming pressures and mixture contents on compressive strength were also investigated. The results showed that the non-burned and non-autoclaved brick with compressive strength at 15.9MPa could be prepared in the optimum condition of 78% hematite tailing, 10% the standard building sand, 10% cement, 2% gypsum, 15% molding water, 20 MPa molding pressure, and 0.01% triethanolamine. The strength of product meeted the standard of JC /T422-2007 and this technology could promote the comprehensive utilization of the hematite tailings from western Hubei Province.
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徐惠忠.尾矿建材开发[M].北京: 冶金工业出版社,2000. [2] 陈巧珍.建筑材料试验计算手册[M].广州: 广东科技出版社,1992. [3] 刘凤春,刘家弟,傅海霞.铁矿尾矿双免砖的研制[J].矿业快报,2007,455(3):33-35. [4] 何艳君.工业废渣生产建筑材料实用技术[M].北京: 化学工业出版社,2003. [5] 高春梅,邹继兴.镁质矽卡岩型铁矿尾矿免烧砖[J].河北理工学院学报,2003,4(25):5-11. [6] Malhotra S K,Tehri S P.Development of Bricks from Granulated Blast Furnace Slag[J].Construction and Building Materials,1996,3(10):191-193. -
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