FLY ASH AS A COMPONENT OF THE REINFORCEMENT OF LIGHT ALLOY METAL MATRIX COMPOSITES. PART 1. COAL COMBUSTION BY-PRODUCTS MANAGEMENT

The first part of the publication presents the structure of global power industry market. Fundamental technologies of heat and electricity production in conventional coal combustion processes are considered,with sp...

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DEVELOPMENT OF TECHNOLOGY TO MANUFACTURE „MODIFIED BENTONITE” USED IN PRODUCTION OF STEEL CASTINGS WITH SPECIAL REGARD TO CASTING SURFACE QUALITY

The article presents the most important results of the research, development and implementation studies carried out under one of the Target Projects as a result of cooperation between the CERTECH Technical and Comm...

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RECYCLING OF WASTE FLY ASH FORMED DURING COMBUSTION OF HARD COAL FOR USE IN MOULDING MIXTURES MANUFACTURE

The article is a compilation of the most important results obtained during execution of own research project regarding the possibility of using fly ash formed during combustion of hard coal as a base granular material ...

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NEW COAL DUST SUBSTITUTES FOR BENTONITE MOULDING SANDS USED IN MANUFACTURE OF CASTINGS FROM MALLEABLE IRON AND ALUMINIUM ALLOYS

The article discusses the most important results of research, development and implementation works conducted under Target Projects in years 2006-2007 at the two Polish foundries, i.e. „Radom" Fittings Factory...

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Fly ash as the reinforcement of light alloy metal matrix composites. Part 2: High temperature investigations

The second part of the publication presents the results of high temperature investigations of selected sorts of fly ash serving as a reinforcement in ALFA composites. Using graphs illustrating changes of sample dimensions in function of temperatur...

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Fly ash as a reinforcement of light metal matrix composites. Part 3. The influence of a chemical composition on characteristic fusibility temperatures of coal fly ashes

Temperature properties of fly ash are closely correlated to the chemical composition and proportions of the main compounds, comprising the waste material. Statistical analysis of data obtained during the measurement of fusibility, showed a high co...

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High temperature performance of materials for the energy sector exposed to water steam

In this work, issues regarding the energy sector in Poland are described in terms of subcritical technology which is commonly used and plays the most important role in electric power production. In such technology steam temperature reaches 500-530...

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High temperature corrosion of metallic materials in coal fired power plant boilers

The aim of this work was to perform high temperature tests in steam conditions at 700‒800°C for 3000 hours. In this work seven alloys were studied: Cr rich austenitic steels 309S, 310S, HR3C, and two solid-solution strengthened Ni based allo...

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