7TH EUROPEAN COKE AND IRONMAKING CONGRESS - ECIC 2016

A physical model of blast furnace slag granulation using rotating disk method is developed, based upon similarity criteria namely solidification similarity, geometric similarity and dynamic similarity. For dynamic similarity ratio of inertial, viscous and surface tension forces between the model and prototype are considered. Based upon dynamic similarity, equality of Ohnesorge number, Reynolds...

Understanding and managing the risks associated with the introduction of a new technology in the highly capital-intensive, large volume and low-margin iron and steel industry, is a key to effectively implementing a lasting change. Hatch has developed a robust methodology for process technology selection for the iron and steel industry to address the risks. The methodology is based on a...

Biomass is a kind of renewable, clean resource and reducing agent, and has become the focus. In recent years, several papers deal with the combustion and gasification of the biomass, however, the research of biomass ash catalytic reaction process is not elaborated completely. Biomass ash itself usually contains a certain amount of K, Na and other mineral elements, these elements will have a...

Effects of MgO on the sintering liquid, the properties and mineralogical morphology of the high-basicity sinter were investigated in this paper. The results show that the assimilability and the infiltration area index of original liquid (IAO) decreases with increasing MgO content. The tumbler index (T), the low temperature break-down (RDI+3.15) and softening start temperature (T10%) of the...

The composition and thermal performance of coke affected by zinc vapor was investigated in this work. Two different kinds of experiments were employed in this paper. The first experiment was that coke absorbed zinc vapor in a muffle furnace at 1300 °C. From SEM/EDS analysis of the treated coke samples and thermodynamic calculation(used by the FactSage software), it was found that zinc was...

The actual situation of cycle and enrichment for potassium in the BF was simulated, in order to complete the adsorption of sinters on potassium (K) vapor, the method of vapor adsorption was chosen to conduct sample preparation test in a horizontal tube furnace. With the increase of the enrichment times of K, enrichment rate of K increased and the absorption capacity of sinter on K vapor...

Lithium silicate(Li4SiO4) was prepared by solid state reaction using leached residue(LR) from blast furnace slag as silicon source, and pure silica was chosen for comparison. Chemical analysis, scanning electron microscope(SEM) and X-ray diffraction(XRD) were used to characterize the Li4SiO4 prepared in the present study. Thermogravimetric analysis was carried out to obtained the absorbed...

CeO2 is a kind of pulverized coal combustion improver which is suited for the Blast Furnace. Combustion mechanism of CeO2 is that Ce4+(CO-)4 weakens bridge adhesion of carbon structural units and alters the lattice structures to lower the activation energy of pulverized coal and accelerate the combustion. Collecting unburned powdered coal by simulating combustion conditions of blast furnace,...