河南灵宝金尾矿制砖的试验研究
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摘要
综合分析河南灵宝矿山金尾矿的基本特性,对利用该尾矿制备烧结砖和免蒸免烧砖进行了试验研究,探究其性能的影响因素,并阐述了制砖机理。试验结果表明,无论是采用烧结法还是采用免蒸免烧养护法,在合理的工艺制度下,都能用该矿的尾矿制备出性能良好且符合国家标准的砖样。制备烧结砖的最佳工艺制度为膨润土质量配比10%、成型水分7%、成型压力10 MPa、升温速率为10℃/min、烧成终温为1000℃、保温2h。方差分析结果表明,制备免蒸免烧砖时,水泥配比对砖样抗压强度有非常显著的影响,成型压力有显著的影响,而成型水分无显著影响。
The basic characteristics of gold tailings in Lingbao Mine of Henan Province were comprehensively analyzed.The experimental study on the preparation of fired bricks and nonautoclaved bricks by the tailings was carried out.The influencing factors of their properties were explored,and the brick-making mechanism was expounded.The test results showed that whether by fired or by nonautoclaved method,the tailings of this mine could make the brick samples under a reasonable technological system with good properties and in accordance with the national standard.The optimum technological conditions for preparing fired bricks included bentonite mass ratio of 10%,water content of 7%,forming pressure of 10 MPa,heating rate of 10℃/min,final sintering temperature of 1000℃and heat preservation of 2 h.The results of variance analysis showed that the ratio of cement had a very significant effect on the compressive strength of brick samples,and the forming pressure had a significant effect,while the forming moisture had little effect.
The basic characteristics of gold tailings in Lingbao Mine of Henan Province were comprehensively analyzed.The experimental study on the preparation of fired bricks and nonautoclaved bricks by the tailings was carried out.The influencing factors of their properties were explored,and the brick-making mechanism was expounded.The test results showed that whether by fired or by nonautoclaved method,the tailings of this mine could make the brick samples under a reasonable technological system with good properties and in accordance with the national standard.The optimum technological conditions for preparing fired bricks included bentonite mass ratio of 10%,water content of 7%,forming pressure of 10 MPa,heating rate of 10℃/min,final sintering temperature of 1000℃and heat preservation of 2 h.The results of variance analysis showed that the ratio of cement had a very significant effect on the compressive strength of brick samples,and the forming pressure had a significant effect,while the forming moisture had little effect.
引文
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[2]陈敏健,陈学江,任如学,等.铁矿尾矿矿相组成与制砖烧成工艺关系的研究[J].现代技术陶瓷,2005,27(3):13-14.
[3]李国昌,王萍.黄金尾矿透水砖的制备及性能研究[J].金属矿山,2006,39(6):78-82.
[4]郭秀岩,吕晓舟,贾承建.张马屯铁矿尾矿制砖开发应用研究[J].山东国土资源,2010,26(7):21-24+29.
[5]陈永亮,张一敏,陈铁军,等.温度制度对尾矿烧结砖性能及结构的影响[J].硅酸盐通报,2010,29(6):1343-1347.
[6]徐惠忠.利用黄金尾矿制砖的实验研究及生产工艺选择[J].硅酸盐建筑制品,1995(4):32-38.
[7]曹健,赵毅,蔡有兴.湖南省某金矿尾矿综合利用研究[J].矿产保护与利用,2004(6):43-44.
[8]杨永刚,朱申红,李秋义.高掺量金尾矿烧结砖的试验研究[J].新型建筑材料,2010,37(11):22-24.
[9]贺深阳,宋美,彭建军,等.高掺量金尾矿烧结砖的烧结机理研究[J].砖瓦,2012(12):23-26.
[10]张义利.利用建筑垃圾免烧免蒸制备标准砖的研究[D].南京:南京工业大学,2006.
[11]郭珍旭,杨卉芃,岳铁兵,等.灵宝金尾矿金的再回收及试制瓷质墙地砖的研究[J].矿产保护与利用,2000(1):23-26.
[12]苏立栋,杨立荣,杨超,等.利用唐山地区铁尾矿生产高掺量尾矿烧结砖的研究[J].非金属矿,2014(1):40-43.
[13]彭建军,贺深阳,刘恒波,等.白云石质金尾矿制备烧结砖的研究[J].新型建筑材料,2012,39(10):21-23.
[14]宋杰光.利用低品位石英砂制备高性能烧结砖的机理研究[D].桂林:桂林理工大学,2005.
[15]高金锋,高伦,安子博,等.铁矿尾矿的活化及蒸养砖的制备[J].武汉工程大学学报,2016,38(2):158-162.
[16]李德忠,倪文,刘杰,等.铁尾矿制备高强高性能透水砖[J].新型建筑材料,2016,43(11):52-54.
[17]王银川.关于瓷砖产生色差的原因分析[J].佛山陶瓷,2017,27(7):51-51.
[18]张婷婷.鄂西赤铁矿尾矿制备免烧砖工艺及机理研究[D].武汉:武汉理工大学,2010.
[19]汪彬彬,邓跃全,田晗旭,等.水泥含量与防氡涂料对粉煤灰砖氡释放的影响[J].非金属矿,2017,40(2):1-3.
[20]刘忠宝.Fe2O3对白云石砖抗水化性能的影响[J].新世纪水泥导报,2017,23(1).
[21]李冲,许亚丽,于岩,等.铅锌尾矿免烧吸附砖的制备与研究[J].材料科学与工艺,2016,24(4):46-51.
[22]郑丽.废粘土砖粉混凝土的性能研究[D].山东:山东大学,2012.
[23]王功勋,黄丹,卢胜男,等.废瓷砖再生骨料与水泥石的界面特征[J].建筑材料学报,2017,20(1):99-105.