Banca de DEFESA: MARIANA DE CASTRO PINTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIANA DE CASTRO PINTO
DATE: 20/10/2023
TIME: 14:00
LOCAL: Sala Virtual - Microsoft Teams
TITLE:

Application of mining waste in the production of soil-cement bricks

KEY WORDS:

Reuse of waste; Phosphate rock waste; Soil-cement bricks; Ecological bricks.

PAGES: 54
BIG AREA: Engenharias
AREA: Engenharia de Minas
SUBÁREA: Tratamento de Minérios
SUMMARY:

Mineral processing generates a high volume of waste, generally deposited in dams. This form of deposition of this material can present high costs, environmental and social impacts and risk situations. Given this, mining companies have been exploring and developing alternatives and new techniques to use waste from ore processing, trying to reduce damage, disposal in the environment and waste of materials. Therefore, the objective of this work was to study the feasibility of using waste from the extraction and processing of phosphate in the incorporation of the soil-cement brick formulation, adding value to a mining by-product while combining sustainability. With this, in addition to an environmentally correct disposal of the waste, it is expected to provide low-cost material to stimulate new business in the community impacted by mining activity. And, to make this study viable, the characterization of the materials was carried out and subsequent determination of the traits for the manufacture of soil-cement bricks. The characterization of the samples was essential for the development of the work because there could be variations in the mineralogical composition, granulometry and chemical composition that could interfere with the parameters of the bricks and, after their manufacture, compressive strength and moisture absorption tests were carried out. water. As a result, bricks with high compressive strength and low water absorption were obtained, meeting the minimum parameters required by standards ABNT NBR 8491 (2012): Tijolo de solo cimento – requisitos and ABNT NBR 8492 (2012): Tijolo de solo-cimento – Análise dimensional, determinação da resistência à compressão e da absorção de água – Método de ensaio, proving that they are compatible with bricks commonly supplied on the market.

Mineral processing generates a high volume of waste, generally deposited in dams. This form of deposition of this material can present high costs, environmental and social impacts and risk situations. Given this, mining companies have been exploring and developing alternatives and new techniques to use waste from ore processing, trying to reduce damage, disposal in the environment and waste of materials. Therefore, the objective of this work was to study the feasibility of using waste from the extraction and processing of phosphate in the incorporation of the soil-cement brick formulation, adding value to a mining by-product while combining sustainability. With this, in addition to an environmentally correct disposal of the waste, it is expected to provide low-cost material to stimulate new business in the community impacted by mining activity. And, to make this study viable, the characterization of the materials was carried out and subsequent determination of the traits for the manufacture of soil-cement bricks. The characterization of the samples was essential for the development of the work because there could be variations in the mineralogical composition, granulometry and chemical composition that could interfere with the parameters of the bricks and, after their manufacture, compressive strength and moisture absorption tests were carried out. water. As a result, bricks with high compressive strength and low water absorption were obtained, meeting the minimum parameters required by standards ABNT NBR 8491 (2012): Tijolo de solo cimento – requisitos and ABNT NBR 8492 (2012): Tijolo de solo-cimento – Análise dimensional, determinação da resistência à compressão e da absorção de água – Método de ensaio, proving that they are compatible with bricks commonly supplied on the market.

COMMITTEE MEMBERS:
Presidente - ALEXANDER MARTIN SILVEIRA GIMENEZ
Interna - MARCELA MAIRA NASCIMENTO DE SOUZA SOARES
Interno - DOMINGOS SAVIO DE RESENDE
Externo à Instituição - LUCAS MARTINS GUIMARÃES - UFV
Externo à Instituição - MARKSSUEL TEIXEIRA MARVILA - UFV