Primary iron metallurgy is characterised by significant direct carbon dioxide emissions, due to the carbothermic reduction of ore. This paper deals with electrification primary production developing a new and innovative process for carbon-free metallic from bauxite residue which byproduct alumina industry. It based on electroreduction oxides suspensions in concentrated sodium hydroxide solution...

In pyrometallurgical processes, metal oxides are reduced from molten slag through carbothermic reduction. It is of interest to evaluate the reactivity carbonaceous materials towards substances such as slag. Characterization techniques coal petrography can provide insight into influence feed properties and how they potentially dictate reductant performance. This study aimed compare petrographica...

Abstract Direct emissions due to the use of carbon-based fossil-reducing agents contribute overall CO 2 pyrometallurgical production processes. This study investigated replacement fossil coke by silicon-rich cutting waste from solar wafer process produce ferrochrome in an electric arc furnace. Laboratory test work and thermochemical simulation were carried out examine product quality at various...

Light-weight ferro-aluminium alloys are finding increasing application in the transport sector to reduce overall weights, energy costs and CO2 emissions. As the primary production processes of both Fe and Al are among the most energy-intensive industrial processes in the world, there is an urgent need to develop alternate routes for producing Fe-Al alloys. Our group has successfully produced th...

J. Węgrzyn Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Katowice, Poland In the process of carbothermic reaction of SiO2 + mC, key reactions appear on the surfaces of both SiO2 and C grains. However, the values of these surfaces are not known. Assuming the simplest case, quartzite and carbon grains are spheres, total surfaces of reaction were calculated fo...