Per: Iara Patricia Vieira de Oliveira (gerdau ), marcelo de castro knop (gerdau), pedro lucio gonçalves (gerdau), isabela de souza (gerdau), victor barbosa simoes (gerdau)
Abstract:
Steel industries, based on the circular economy, are increasingly looking for solid solutions that provide environmental gains and financial returns, with the application of co-products in sintering. The objective of this work is to separately evaluate the influence of the use of biological sludge and light oxide, co-products from the Carbochemical Plant and the Steelworks, respectively, in the sintering process on a pilot scale. Initially, the performance of biological sludge was tested at 0.2% in partial mixing. Subsequently, the light oxide was evaluated in different percentages, 5% and 8% in the partial mixture. The results obtained indicated loss of productivity, therefore, additional tests were carried out in an attempt to recover productivity, for this, sinter feed was incorporated into the ore mixture. The results obtained demonstrate that the consumption of the respective co-products did not impact the chemical, physical, metallurgical and mineralogical properties of the sinter product, but there was a loss of productivity, except for the consumption of 5% light oxide with the addition of sinter feed to the ore mixture