Análise das propriedades físicas de corpos cerâmicos incorporados com resíduo siderúrgico

Abstract

This work aimed to evaluate the physical properties of clayey masses used in the red ceramic industry made with the incorporation of solid residue in the form of powder, also called cyclone powder, from the iron and steel industry in its formulation. The manufactured masses contained the following residue contents: 5, 7 and 10% by weight. The trace of clay used was 1:1 which contained 50% of plastic clay and 50% of nonplastic clay from a red ceramic deposit located in Itaitinga (CE). The results of total linear retraction, total mass loss, water absorption, apparent porosity and apparent specific mass are presented for the clay mass. 45 specimens were formed by hydraulic pressing and were burned at temperatures of 800 °C, 850 °C and 900 °C. The physical properties were then determined according to the composition and the firing temperature. The specimens with 10% of residue obtained 15.37% of Water Absorption on average; 28.59% of Apparent Porosity and 1.86 g/cm3 of Apparent Specific Mass. Thus, these tests indicated that the addition of residue did not present significant difference to the results obtained in samples without residue, showing that it has potential to be used in the red ceramic industry.