机械力对高硅金尾矿粒度及活性的影响
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摘要
基于机械力活化方法及理论,研究机械力对金尾矿粒度及活性的影响,并通过用X射线衍射仪、电子扫描显微镜对其进行形貌观察和物相分析。结果表明:实验所选金尾矿易磨性较好,机械力对其粒度分布影响较大,颗粒尺寸在活化80 min时约为5μm,达到最小值;其活性随着活化时间的增加有所提高,80 min时达到最大值,28 d抗压强度及活性指数分别为35. 33 MPa和78. 62%,之后会因弱团聚现象的出现而降低。
This paper studied the effect of mechanical force on the particle size and activity of gold tailings based on the mechanical force activation method and theory,the morphology and phase analysis of which were conducted with SEM and XRD respectively. The result shows that the gold tailings chosen are relatively easy to grind and the particle distribution is greatly affected by mechanical force with the minimum particle size of 5 μm in an activation time of 80 min; its activation property increases with the rise of the acting time,reaching its maximum at 80 min of action; the data of 28 d compressive strength and activity index of the test block mortar reach their peak of 35. 33 MPa and 78. 62% respectively at80 min of action,then decrease with the occurrence of weak agglomeration.
This paper studied the effect of mechanical force on the particle size and activity of gold tailings based on the mechanical force activation method and theory,the morphology and phase analysis of which were conducted with SEM and XRD respectively. The result shows that the gold tailings chosen are relatively easy to grind and the particle distribution is greatly affected by mechanical force with the minimum particle size of 5 μm in an activation time of 80 min; its activation property increases with the rise of the acting time,reaching its maximum at 80 min of action; the data of 28 d compressive strength and activity index of the test block mortar reach their peak of 35. 33 MPa and 78. 62% respectively at80 min of action,then decrease with the occurrence of weak agglomeration.
引文
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[11]王亚光,韩凤兰,赵世珍,等.粉煤灰地质聚合物的制备及其抗压强度研究[J].新型建筑材料,2017,44(10):12-16.
[12]龙广成,谢友均,王新友.矿物掺合料对新拌水泥浆体密实性能的影响[J].建筑材料学报,2002,5(1):21-24.
[2]赵英良,邢军,孙晓刚,等.黄金尾矿资源化利用研究现状与进展[J].有色金属(矿山部分),2016,68(3):1-4,8.
[3]刘璇,李如燕,孙可伟,等.尾矿资源综合利用的必要性及对策[J].再生资源与循环经济,2015,8(12):30-32.
[4]刘璇,李如燕,崔孝炜,等.金尾矿为硅源制备4A分子筛的研究[J].矿产保护与利用,2017(3):90-93.
[5]孙坚,耿春雷,张作泰,等.工业固体废弃物资源综合利用技术现状[J].材料导报,2012,26(11):105-109.
[6]谭明洋,吕宪俊,姜梅芬,等.某金矿尾矿用作水泥混合材的试验研究[J].黄金,2015,36(4):78-82.
[7]ZHANG S,XUE S,LIU X,et al.Current situation and comprehensive utilization of iron ore tailing resources[J].Journal of Mining Science,2006,42(4):403-408.
[8]陈烈.金尾矿胶凝材料的制备及其固氯机理研究[D].邯郸:河北工程大学,2018.
[9]MULAK W,BALAZ P,CHOJNACKA M.Chemical and morphological changes of millerite by mechanical activation[J].International Journal of Mineral Processing,2002,66(1):233-240.
[10]王恩,倪文,孙汉.工业固体废弃物制备地质聚合物技术的原理与发展[J].矿产综合利用,2005(4):30-34.
[11]王亚光,韩凤兰,赵世珍,等.粉煤灰地质聚合物的制备及其抗压强度研究[J].新型建筑材料,2017,44(10):12-16.
[12]龙广成,谢友均,王新友.矿物掺合料对新拌水泥浆体密实性能的影响[J].建筑材料学报,2002,5(1):21-24.