The theoretical equation for predicting volume expansion of steel slag is deduced based on both chemical reaction and physical changes of free lime in steel slag during the hydration process. Laboratory volume expansion testing is conducted to compare the results with the theoretical volume expansion. It is proved that they correlated well. It is furthermore experimentally proved that certain v...

The equilibrium-phase relations between copper mattes and spinel-saturated iron silicate slags were investigated at 1250°C pSO2 of 0.25 atm. experiments conducted in synthesized spinel crucibles (Fe3O4) controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature isothermal equilibration/quenching technique. compositions characterized an electron probe X-ray microanalyzer. matte slag displaye...

The gradual increase in industrial wastes allowed the utilization of these different areas. Steel slag, one wastes, is formed during reduction molten crude iron to steel basic oxygen furnaces (BOF) or scrap electric arc (EAF) and induction (IF). Removal, storage, disposal slag an important environmental economic problem. offers opportunities be used as alternative material various areas contrib...

With the use of high phosphorus iron ore, there is a large amount steel slag formed, which difficult to handle. How separate elemental has become key issue in secondary utilization slag. Experiments found that were distinct phosphorus-rich phases, iron-rich phases and matrix high-phosphorus cooled with furnace. In this study, effects heat treatment conditions basicity on P2O5 content, as well s...

The first part of the project is mainly about changing of slag compositions and see it affect on the inclusions in the ladle furnace. The second part of the project is to study the influence of stirring (EMGAS) on the large inclusions in the steel by changing stirring conditions. The project has done at Uddeholm AB, Hagfors. First, the scrap is melted in ARC furnace then moved to the ladle de-s...

Although Portland cement is the most widely used binder in the stabilisation/solidification (S/S) processes, slag-based binders have gained significant attention recently due to their economic and environmental merits. In the present study, a novel binder, reactive MgO activated slag, is compared with hydrated lime activated slag in the immobilisation of lead and zinc. A series of lead or zinc-...

A considerable amount of mill scale is generated from steelmaking plants annually. Although some industries use it as raw material however, since it contains iron in the form of FeO, Fe2O3, and Fe3O4, it can be considered as a valuable metallurgical raw material for iron and steelmaking industry as well. Thus, the aim of this study was to evaluate the possibility, efficiency, and consequences o...