Estudo da Produção do Agregado Sintético Fabricado com Resíduo do Processo Bayer para indústria da construção civil - Parte I

Materia

article

José Antônio da Silva Souza¹  Lêda de Azevedo Racanelli¹  João Nazareno Nonato Quaresma¹ 

[1] UFPA

关键词: Red mud;    Aggregate;    Concrete;    Construction;   

DOI  :  10.1590/S1517-707620220001.1356

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The large amount of solid waste, coming from the mining and metallurgy industry, constitutes a serious socio-environmental problem, due to the large amount of volume that is generated. These residues are of great interest to other industries, such as ceramics, for example, and this work presents studies carried out for the recycling of red mud (red mud), as a raw material in the production of synthetic aggregate, aimed at civil construction. Red mud, the main industrial waste in the manufacture of alumina, proved to be an extremely important input in the manufacture of different types of aggregate to be used in concrete due to its physical and chemical characteristics. The result was the possibility of manufacturing aggregates with different physicochemical characteristics, which depend solely on the composition of the mixtures between silica, clay and red mud. For the first phase of this work (part I) the physical characterization of the produced aggregate was evaluated by the apparent specific gravity (MEA) and apparent porosity (PA) varying at temperatures of 1200°C, 1250°C and 1300°C. Finally, to an X-ray diffraction (XRD) analysis.

【 授权许可】

CC BY