Research on using red mud as a substitute for clay in the production of floor tiles and roof tiles
Abstract
In the aluminum manufacturing industry, the main activity includes the production of Al2O3 oxide (alumina) from bauxite ore. In fact, the Bayer process was the only one used to produce alumina that produced large amounts of a hazardous waste known as red mud. Among the proposed alternatives that consider red mud as a useful by-product, the incorporation of red mud into the production of floor tiles and roof tiles allows alarge amount to be used as a building material product. Some works have studied the alternative but limited to mixing clay with red mud to produce fired ceramics. In this study, a processing method using red mudand clay was proposed to produce floor tiles and roof tiles by plastic extrusion method. The red mud andclay mixes are all processed before shaping the joinery and fired at 850oC, 950oC and 1050oC. The results show thatred mud and clay after processing, shaping and firing at 1050oC meet the criteria according toTCVN 7483:2005.
