Estudo do comportamento de escórias de alto-forno a carvão vegetal produzidas a partir de ativação a quente

Abstract

The process of slag conception obtained from the production of pig iron by vegetal charcoal, ends up making reactive slags and with clustering potential for the production of concrete and mortar. However, it`s important that we find solutions that can increase this potential of clustering through actions made in the site (indrustrial plant) and more specifically in the blast furnace exit. This work wishes to assess the behavior of the slag from blast furnace by vegetal charcoal after activation by heating made in the indrustrial plant by means of injection of raw lime (CaO) and solidium chloride in smaller quantities and economically viable. It`s important to say that every slag activated or not, suffered an abrupt process of cooling right after the exit from the blast furnace called granulation and afterwards were submitted to grinding in order to achieve minimum granulation possible compatible to the thinness of commercial cement. The final results showed an increase in the pozzolanic activity of the slag that underwent the activation by heating compared to those traditional ones generated from the pig iron fabrication, fact that makes easier the use that like a clustering and sticking material in the production of concretes and mortar, particularly in the substitution of the traditional cement, when compared to the production of concretes and mortar and the slag that were not submitted to activation by heating.