Title The effect of mineral stone wool production waste on the research of refractory composite
Authors Bekeris, Tadas ; Stonys, Rimvydas ; Antonovič, Valentin
DOI 10.7250/9789934372094
ISBN 9789934372094
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Is Part of IMST 2025: 6th International Conference Innovative Materials, Structures and Technologies, 10-12 September, 2025 Riga, Latvia : abstract book.. Riga : Riga Technical University, 2025. p. 14.. ISBN 9789934372094
Keywords [eng] mineral stone wool production waste ; granulation ; refractory composite
Abstract [eng] The necessity to decrease pollution in modern construction and other industrial sectors is becoming increasingly clear, especially in the context of rising CO2 emissions and the effects of climate change. Consequently, it is essential to find efficient ways to utilize the waste generated by industrial sectors, thus creating a secondary use for this waste and promoting sustainability and the circular economy [1]. A notable industrial byproduct is the dust resulting from the production process of mineral stone wool, which is also referred to as cupola dust [2]. General mineral wool waste generation in the European Union amounts to approximately 2.54 million tons per year and is expected to increase up to 2.82 million tons by 2030 [3]. Notably, this material is not recycled back into the production cycle but rather sent to landfill. Their chemical composition, which is rich in SiO2, Al2O3, CaO and MgO compounds, can make them valuable as active components in composite materials. The initial stage of the study aims at the mechanical treatment of these dusts by granulation in order to utilize the large amount of dust and to give the dust a larger reaction surface with the cementitious materials. The granulation process is seen as a preparatory step for pellet incorporation into composite systems, using the granules as a filler in refractories. This step focuses on the formation of granules. The resulting pellets are heated up to 1000 °C to determine the chemical, physical and mechanical changes of the pellets due to the high temperature. The experimental findings are obtained using chemical composition, pH, electrical conductivity and SEM to determine the influence of the pellets on the hydration, microstructure and other properties of aluminate cement.
Published Riga : Riga Technical University, 2025
Type Conference paper
Language English
Publication date 2025