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Burchart-Korol D.,Central Mining Institute of Poland
Journal of Cleaner Production | Year: 2013

The goal of this study is to perform a life cycle assessment (LCA) of steel production through the integrated steel production and electric arc furnace routes in Poland. The study defines the major sources of environmental impacts and proposes pollution prevention methods for the most pollutive steelmaking processes. The LCA methodology based on the ISO 14044 standard is used with SimaPro 7.3.3 software and the Ecoinvent database. The life cycle inventory shows data averaged from the existing steel plants in Poland, and the impact assessment results indicate that the production of pig iron in blast furnaces has the highest impact on greenhouse gas emissions and fossil fuel consumption in the national integrated steel production route, while the iron ore sintering process, which is the largest contributor to dust and gas emissions in the national iron and steel industry, uses the most minerals and depletes the most metal. Electricity consumption has the highest impact on greenhouse gas emissions and fossil fuel consumption in the national electric arc furnace route. Therefore, this article presents the results of an LCA of alternative fuel consumption in a national iron ore sinter plant. The study concludes that pollution prevention methods related to raw material substitutions in iron-making processes should be used to reduce environmental impacts in the iron and steel industry. The results of this study can be used as the first step in performing a full cradle-to-grave steel LCA that includes all phases of the steel life cycle. © 2013 Elsevier Ltd. All rights reserved.

Burchart-Korol D.,Central Mining Institute of Poland
Metalurgija | Year: 2011

The following paper contains importance of LCA in the iron and steel industry. The metallurgy sector is highly energy intensive and the production of crude steel is associated with significant CO2 emissions. ULCOS (Ultra Low CO2 Steelmaking) is the world's initiative to reduce carbon dioxide emissions by 50 % by 2 050 compared with today's best routes from steel production by developing new breakthrough technologies. A new environmental Life Cycle Assessment (LCA) method has been undertaken in ULCOS as the most holistic approach of assessing environmental impact and selecting new technologies. Usage of LCA enables to compare alternative metallurgical technologies.

Bukowska M.,Central Mining Institute of Poland
Journal of Mining Science | Year: 2012

Coal mining realised in Upper Silesian Coal Basin is the main course of occurrence of bumps and rock-bumps. Geodynamical phenomena described as the rock-bumps occur in the area of GZW from the end of the 19th century. The mechanism of the rock-bumps phenomenon, due to the complexity, didn't allow elaborating the completely effective method of its forecasting. However, increasing amount and the scale of rock-bumps, due to the development of mining, have extorted the scientific circles to perform works devoted to the elaborating newer and newer and better and better methods of the assessment of liability to rock-bumps, likewise methods of rock-bumps hazard assessment. © 2012 Pleiades Publishing, Ltd.

Korol J.,Central Mining Institute of Poland
Journal of Biobased Materials and Bioenergy | Year: 2012

The paper presents a polyethylene-based composites preparing, using keratin fiber obtained from waste chicken feathers. Keratin fibers were obtained with no chemical treatment. Keratin fibers were obtained by mechanical treatment of waste chicken feathers. Fibers have been extracted by all parts of the feathers, namely rachis, barb, afterfeather, hollow shaft, calamus. The fibers used in this research program are a combination of all parts of the feathers obtained from the poultry industry, which is a more practical way and economically justified, to produce composites filled by waste poultry feathers after suitable modification. Fibers of length from approximately 0.1 to 8 mm where introduced into the high density polyethylene matrix during the extrusion using two screws Leistritz extruder with ratio L/D = 44 (Leistriz MICRO 27/GL/GG-44D). Fibers where added into HDPE matrix with varying aspect ratio. Samples for mechanical testing where prepared by injection molding with use Arburg Allrounder injection molding (mold clamping force: 500 kN). In tensile testing the following properties of obtained composites where tested: tensile strength, elastic modulus, elongation. The paper analyzes also influence of addition following additives: compatibilizer and regranulated LDPE obtained from waste stretch foil, on the mechanical properties of obtained composites. Copyright © 2012 American Scientific Publishers.

Smolinski A.,Central Mining Institute of Poland
Energy Conversion and Management | Year: 2011

The fuel's reactivity can be defined as a parameter determining its processability in thermochemical processes applied to convert them into energy and/or energy carriers. It depends on many factors, like chemical composition and physical properties of a fuel as well as process parameters. As such it may provide important information on the process results in terms of product output and quality. In the paper the results of reactivity tests performed for Polish hard coals in the process of steam gasification in a fixed bed reactor system as well as the analysis of potential relationships between the reactivity and selected physical and chemical parameters of coal and products quality and quantity using chemometric method (principal component analysis) are presented. The analysis revealed a negative correlation between Rmax and the total volume of synthesis gas produced in the process. This regularity was confirmed in the tests of steam gasification of coal to hydrogen-rich gas with CO2 capture under atmospheric pressure and at the temperature of 700 °C. © 2010 Elsevier Ltd. All rights reserved.

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