Metodologia para análise estatística da eficiência energética do coque em fornos de recuperação

Abstract

Research in Materials Science scrutinizes materials to obtain value-added products according to the Global Market. Based on this statement, at the beginning of the product manufacturing process, one is faced with the choice of material in line with its formation of the crystalline structure, its shape in the crystallographic plane in a given environment. The importance of these variables is so that, at the end of production, a product is presented in accordance with thespecifications requested by the customer. Metallurgical coke is among these important materials for the steel industry. It is characterized by being a product from the pyrolysis of themetallurgical coal mixture, in an environment of approximately 1,000 ºC. During the carbonization process, which is very complex, there are numerous system variables, among which we can mention as basic the temperature, pressure, humidity and volatile material that need control to acquire energy efficiency and equipment in the system, the recovery oven. In view of this matter, the energy efficiency in the manufacture of coke and the statistical analysisof the model in the molds of a factorial planning in blocks were approached, considering someof the most relevant variables in the production of metallurgical coke. The statistical results showed that the predicted temperature profile is in good agreement with the actual temperatureprofile (R2 = 0.99), with the factors under study coking time (t), moisture (Um) and material content volatile (MV) of coal significantly influencing the temperature variation inside the ovenduring coking.