在粘土基质中回收生物质焚烧炉的灰分来生产陶瓷砖。
Recycling of ash from biomass incinerator in clay matrix to produce ceramic bricks.
机构信息
Departamento de Ingeniería Química, Ambiental y de los Materiales, EPS de Linares, Universidad de Jaén, 23700 Linares (Jaén), Spain.
出版信息
J Environ Manage. 2012 Mar;95 Suppl:S349-54. doi: 10.1016/j.jenvman.2010.10.022. Epub 2010 Nov 10.
The objective of this study is to investigate the effect of incorporation of ash from biomass incinerator as raw material on the production of ceramic bricks for their application in construction. So, for the fabrication of bricks, compositions were prepared with addition of increasing amounts of waste ash (0%, 10%, 20%, 30%, 40% and 50% in wt.) in the clay body. The mixed samples were sintered using conventional powder processing based on powder compaction at 54.5 MPa and firing them at 950 °C without the addition of additives. Effect on apparent density, water absorption and mechanical properties were investigated. The results showed that water absorption increased and apparent density and compressive strength decreased with higher amounts of ash. Bricks with an ash content up to 20% meet the UNE standards compressive strength. As a result, since interesting performances were observed, the potential use of ashes from biomass incinerator up to 20 wt.% in ceramic formulations of industrial interest was confirmed. In this sense, incorporating ashes into clay body reduces environmental problems and total cost of raw material disposition.
本研究的目的是研究将生物质焚烧炉灰作为原料掺入对陶瓷砖生产的影响，以便将其应用于建筑。因此，为了制备砖块，在粘土体中添加了不同量的废灰（0%、10%、20%、30%、40%和 50%wt.）来制备组成物。混合样品采用传统的粉末加工方法进行粉末压实，在 54.5 MPa 下进行压制，在不添加添加剂的情况下于 950°C 下进行烧结。研究了对显密度、吸水率和机械性能的影响。结果表明，随着灰分含量的增加，吸水率增加，显密度和抗压强度降低。灰分含量高达 20%的砖块符合 UNE 抗压强度标准。因此，由于观察到了有趣的性能，因此确认了在工业感兴趣的陶瓷配方中最多 20wt.%生物质焚烧炉灰的潜在用途。从这个意义上说，将灰烬掺入粘土体可以减少环境问题和原材料处理的总成本。
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