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Effects of waste glass particle size on improving the property and environmental safety of fired brick containing electroplating sludge
Construction and Building Materials ( IF 7.4 ) Pub Date : 2020-05-21 , DOI: 10.1016/j.conbuildmat.2020.119583
Linqiang Mao , Huan Zhou , Mingguo Peng , Linchao Hu , Wenyi Zhang

The introduction of industrial solid waste in fired clay brick is a promising way to consume this waste, however, physical and mechanical properties were seriously impacted due to the incorporation of these solid waste. In current study, various particle diameters of waste glass powder (WGP) were introduced in the preparation process of brick to examine the difference in improving physical and mechanical performances of products, and to obtain the optimal particle size of waste glass for applying in the preparation of fired brick. Results showed the incorporation of WGP in larger particle size (100 and 300 meshes) can effectively improve properties, like bulk density, water absorption and compressive strength, but decrease thermal conductivity slightly. XRD and SEM analysis revealed that WGP with particles size of 100 and 300 meshes would become glass–ceramic phase or form albite, which can improve effectively physical and mechanical properties. However, part of WGP with particle size of 600 and 800 meshes might melt and crystalize into quartz at high temperature. The addition of WGP in particle size of 100 and 300 meshes can decrease much leachability of heavy metals from fired bricks and promote environment safety comparing with WGP with particle size of 600 and 800 meshes. Above results suggested that there is no necessary to grind WGP in much smaller particle size during introduction of waste glass for improving fired brick property. The conclusions from this research give some useful information for the incorporation of WGP in the preparation of fired brick.



中文翻译:

废玻璃粒度对改善含电镀污泥的烧结砖性能和环境安全的影响

在烧制的粘土砖中引入工业固体废物是一种有前途的消耗方法,但是,由于这些固体废物的掺入,物理和机械性能受到严重影响。在当前的研究中,在砖的制备过程中引入了各种粒径的废玻璃粉(WGP),以检验改善产品物理和机械性能的差异,并获得用于制备的最佳废玻璃粒径。烧砖。结果表明,在较大粒度(100和300目)中掺入WGP可以有效改善诸如堆积密度,吸水率和抗压强度等性能,但会稍微降低导热系数。XRD和SEM分析表明,粒径为100和300目的WGP将变成玻璃-陶瓷相或形成钠长石,从而可以有效地改善物理和机械性能。但是,在高温下,粒度为600和800目的WGP的一部分可能熔化并结晶为石英。与粒度为600和800目的WGP相比,添加粒度为100和300目的WGP可以大大降低煅烧砖中重金属的浸出性,并提高环境安全性。以上结果表明,在引入废玻璃过程中无需将WGP研磨成更小的颗粒尺寸来改善烧结砖的性能。这项研究的结论为将WGP掺入煅烧砖的制备中提供了一些有用的信息。可以有效改善物理和机械性能。但是,在高温下,粒度为600和800目的WGP的一部分可能熔化并结晶为石英。与粒度为600和800目的WGP相比,添加粒度为100和300目的WGP可以大大降低煅烧砖中重金属的浸出性,并提高环境安全性。以上结果表明,在引入废玻璃期间无需将WGP磨碎成更小的颗粒尺寸来改善烧砖的性能。这项研究的结论为将WGP掺入烧砖的制备中提供了一些有用的信息。可以有效改善物理和机械性能。但是,在高温下,粒度为600和800目的WGP的一部分可能熔化并结晶成石英。与粒度为600和800目的WGP相比,添加粒度为100和300目的WGP可以大大降低煅烧砖中重金属的浸出性,并提高环境安全性。以上结果表明,在引入废玻璃期间无需将WGP磨碎成更小的颗粒尺寸来改善烧砖的性能。这项研究的结论为将WGP掺入烧砖的制备中提供了一些有用的信息。粒度为600和800目的WGP的一部分在高温下可能熔化并结晶为石英。与粒度为600和800目的WGP相比,添加粒度为100和300目的WGP可以大大降低煅烧砖中重金属的浸出性,并提高环境安全性。以上结果表明,在引入废玻璃期间无需将WGP磨碎成更小的颗粒尺寸来改善烧砖的性能。这项研究的结论为将WGP掺入烧砖的制备中提供了一些有用的信息。粒度为600和800目的WGP的一部分在高温下可能熔化并结晶为石英。与粒度为600和800目的WGP相比,添加粒度为100和300目的WGP可以大大降低煅烧砖中重金属的浸出性,并提高环境安全性。以上结果表明,在引入废玻璃期间无需将WGP磨碎成更小的颗粒尺寸来改善烧砖的性能。这项研究的结论为将WGP掺入烧砖的制备中提供了一些有用的信息。以上结果表明,在引入废玻璃过程中无需将WGP研磨成更小的颗粒尺寸来改善烧结砖的性能。这项研究的结论为将WGP掺入煅烧砖的制备中提供了一些有用的信息。以上结果表明,在引入废玻璃期间无需将WGP研磨成更小的颗粒尺寸来改善烧砖的性能。这项研究的结论为将WGP掺入煅烧砖的制备中提供了一些有用的信息。

更新日期:2020-05-21
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