Sulfur oxides are produced from the burning of fossil fuels, mainly coal and oil, and the smelting of metal ores that contain sulfur. Emissions of sulfur oxides cause serious impacts on human health and the environment, both directly and as a result of the way they react with other substances in the air. Sulfur oxides are main precursors of atmospheric acidification, aerosol generation, and aci...

During the vanadium extraction process in basic oxygen furnace (BOF), unduly high temperature is unfavorable to achieve efficient yield with minimum carbon loss. A new strategy was developed based on industrial experiments. The applies selective oxidation between and (Tsl) equilibrium of reduction (Teq) for earlier middle-late smelting, respectively. Industrial experiments showed 56.9 wt% V rem...

copper smelting slags are hard materials. therefore,to recover their copper by flotation method, grinding should be carried out to obtain optimal particle size. copper smelting slags in the bardeskan district, with work index of 16.24 kwh/st, were grinded for 65 minutes to reach an acceptable degree of freedom for the flotation tests, with particle size of 80%, smaller than 70 μm. with this gri...

Abstract. Obtaining an artificial stone based on steel-smelting slag is possible as a result of carbonization the feedstock in carbon dioxide. The - and dioxide are by-products from steel smelting electric furnaces, which must be disposed order to improve environmental situation region. condition for obtaining cementing ability steelmaking preparation charge with certain properties maturation t...

Seven heavy metals, Co, Cr, Cu, Fe, Mn, Ni and Zn, were measured in marine sediments, plants and invertebrates in the vicinity of a ferro-nickel smelting plant in Greece. The concentrations of metals in the sediment were higher than those found in the average unpolluted Greek coastal sediment. High levels of metals were observed in the gastropod molluscs, particularly Cerithium vulgatum, which ...

Various aluminum-smelting by-products from three production sources were received and characterized. The waste materials were tested for compound identification and environmental acceptance. A coarse metallic aluminum recovery test using an Eddy Current separator (ECS) was performed using two different Circuit configurations. White dross performed equally well with either Circuit, while black d...

L. Blacha, A. Smalcerz Silesian University of Technology, Faculty of Materials Engineering and Matallurgy, Katowice, Poland K. Michalek Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava, Czech Republic M. Warzecha University of Częstochowa, Faculty of Materials Processing Technology and Applied Physics, Częstochowa, Poland In the paper, results of a kinet...

Black Pigment Concentrating Factor in the Fiddler Crab: M. Fingerman . 585 Detection of Complement-Fixing Antibodies for Carre's Virus: J. E. Prier, B. S. Wright, S. S. Kalter . 586 Observations at an Ancient Smelting Site in Negev: V. P. Sokoloff and A. Seroussi .5 87 Cocarcinogens and Minimal Carcinogenic Doses: W. E. Poel . 588 Preliminary Report on Biological Applications of Color Televisio...