Current blast furnace technology is a two-stage ironmaking process that requires that iron ore concentrate first be formed into pellets, fired at 1260°C, cooled, transported to the blast furnace, and then re-heated to approximately 1500°C to produce pig iron. This heating, cooling, and then reheating wastes a great deal of energy, which would be saved if the ironmaking process had only a single...

The purpose of this research was to study the feasibility incorporating steel slags into coarse bituminous mixtures. objective twofold: reduce dependence on natural aggregates, and provide a use for industrial by-products. studied come from manufacture carbon in electric furnaces are divided two types: Electric Arc Furnace (EAF) slag Ladle (LF) slag. mixture designed is concrete (AC22G), base c...

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...

To evaluate the effects of industrial by-products materials on the performance of porous concrete for plant growth, this study investigated the physical, strength, and freeze/thaw resistances of porous concrete for plant growth, prepared by replacing cement with blast furnace slag powder at 60% by weight, and replacing natural stone aggregates with coarse blast furnace slag aggregates at rates ...

an electric arc furnace (eaf) is known as nonlinear and time variant load that causes power quality (pq) problems such as, current, voltage and current harmonics, voltage flicker, frequency changes in power system. one of the most important problems to study the eaf behavior is the choice of a suitable model for this load. hence, in this paper, a probabilistic three-phase model is proposed base...

The rapid increase of non-linear loads in the last three decades has caused electrical quantities such as voltages and currents in 3-phase distribution systems to become distorted waveforms. This paper reviews, explains and discusses some new concepts, definitions and new available theory in the unbalanced and distorted systems. The usefulness of the proposed practical definitions is investigat...

The influence of different carbon sources, including anthracite, calcined petroleum coke, three samples high-temperature biochar, and a mixture 50 wt.% biochar on slag foaming behavior was studied. slag’s composition set to FeO-CaO-Al2O3-MgO-SiO2, the temperature for 1600 °C. effect sources evaluated using characteristics (foam height, foam volume, relative gas fraction), X-ray diffraction (XRD...