The present paper investigated the process of the slag wool fabrication using high temperature blast furnace (BF) slag modified by coal ash (CA). The liquidus temperature and viscosity of the slag system with different mass ratios of BF slag and CA were measured through an inner cylinder rotation method. The approximate mass ratio used to fabricate the slag wool was therefore determined and sla...

Steelmaking slags are reused for civil engineering and roadbed materials. When the slag containing Cr oxide is reused, there a slight case of toxic Cr6+ elution from mineral phase CrO3 into environment. Therefore, in order to effectively utilize as resources, development technology suppress urgently required. Regarding formation at high temperature Cr3+, many researches have been carried out fu...

Metal emulsions have been studied for several decades as a method of increasing the efficiency steelmaking process. This study was performed using water model, observable at room temperature, to compensate disadvantages high-temperature experiment, results which are difficult observe visually. As substitute metal-in-slag emulsions, experiments were conducted by dropping distilled into silicone ...

Abstract The primary process in an electrical arc furnace (EAF) during industrial steelmaking results tons of black slags which cause pollution to the environment. In this work, iron oxides generated EAF from SIDERPERU plant, Peru was reduced via carbothermal reaction. reduction slag α-Fe is demonstrated by X-ray diffraction, Mӧssbauer spectroscopy and magnetometry. However, phases with calcium...

Rare earth metals are used in semiconductors, solar cells and catalysts. This review focuses on the background of oxide metallurgy technologies, the chemical and physical properties of rare earth (RE) metals, the background of oxide metallurgy, the functions of RE metals in steelmaking, and the influences of RE metals on steel microstructures. Future prospects for RE metal applications in steel...

Steelmaking based on direct reduced iron (DRI, and its compacted derivative hot briquetted iron, HBI) is an anticipated important global alternative to current steel production FeOx reduction in blast furnaces due lower specific CO2 emission. The majority of DRI melted refined the electric arc furnace with different process conditions compared melting scrap raw material composition being rather...