Trabalho de Conclusão de Curso - Graduação

Avaliação da incorporação do rejeito de minério de cobre em massas argilosas para a produção de cerâmica vermelha

Currently, raw materials are becoming scarce and the tailings generated have become serious environmental problems with complex management. It is known that industrial wastes are problems worldwide, and that reuse of these can guarantee a lower environmental impact. In view of these problems, this w...

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Autor principal: CARDOSO, Altair Costa
Grau: Trabalho de Conclusão de Curso - Graduação
Publicado em: 2019
Assuntos:
Acesso em linha: http://bdm.ufpa.br/jspui/handle/prefix/939
Resumo:
Currently, raw materials are becoming scarce and the tailings generated have become serious environmental problems with complex management. It is known that industrial wastes are problems worldwide, and that reuse of these can guarantee a lower environmental impact. In view of these problems, this work has the objective of evaluating the effect of the incorporation of the waste from the copper mining in clay masses, in different percentages, aiming at the production of red ceramics. The clay and the tailings used were characterized by X-ray diffraction (XRD) and the formulations were prepared in the following proportions of copper waste: 10%, 20%, 30% and 40% by weight. The ceramic bodies were formed by uniaxial pressing and sintered at 850 ° C, 950 ° C and 1050 ° C with a firing stage of 2 hours. The technological properties analyzed were linear retraction, apparent specific mass, apparent porosity, water absorption and mechanical strength, the latter obtained by the flexural stress at three points. Microstructural analysis was evaluated by optical microscopy. Satisfactory results were obtained in the compositions containing 20 and 30% of copper waste, without great losses in mechanical resistance. From this study it was found that the addition of copper waste into clayey masses may prove to be attractive for the manufacture of products from the red ceramic industry.