A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of using alternative fuels on cement manufacturing
Waste materials from different industrial processes, which under certain conditions can be utilized as secondary constituents in the cement manufacture indirectly leads to a reduction in the specific energy consumption of the clinker manufacture. Their utilization also contributes to save natural raw materials and fuels, preserve natural resources and diminish the cost of fuel energy. Moreover, the utilization of secondary fuels offers the possibility to reduce the emissions of CO2 by saving equivalent quantities of natural fuel. Furthermore, the high CaO content of some secondary raw materials implies a decreasing of limestone amount in the raw meal with direct results in CO2 emissions decreasing and an important saving in energy. Investigations show, that crystallized blastfurnace slag, fly ash and iron chips are suitable as secondary raw materials for the manufacture of cement raw mix. Meat and bone meal can be used as alternative fuel its ash being incorporated in clinker minerals. At temperatures above 1350 deg C, the reactivity of raw mix is high as more than 90% of the available CaO combined with acidic oxides and the normal minerals of the cement clinker were formed. The addition of certain amounts of MBM ash decreased the raw meal burnability in a slight extent, the free lime values remained below 2 wt % even with the highest MBM additions. The substitution of phosphorus for silicon had a positive impact on the hydration behaviour of ahte and bellte. Higher degrees of hydration comparing with the reference sample were observed, taking into account that the particle size distributions of milled clinkers were nearly the same.
Influence of using alternative fuels on cement manufacturing
Waste materials from different industrial processes, which under certain conditions can be utilized as secondary constituents in the cement manufacture indirectly leads to a reduction in the specific energy consumption of the clinker manufacture. Their utilization also contributes to save natural raw materials and fuels, preserve natural resources and diminish the cost of fuel energy. Moreover, the utilization of secondary fuels offers the possibility to reduce the emissions of CO2 by saving equivalent quantities of natural fuel. Furthermore, the high CaO content of some secondary raw materials implies a decreasing of limestone amount in the raw meal with direct results in CO2 emissions decreasing and an important saving in energy. Investigations show, that crystallized blastfurnace slag, fly ash and iron chips are suitable as secondary raw materials for the manufacture of cement raw mix. Meat and bone meal can be used as alternative fuel its ash being incorporated in clinker minerals. At temperatures above 1350 deg C, the reactivity of raw mix is high as more than 90% of the available CaO combined with acidic oxides and the normal minerals of the cement clinker were formed. The addition of certain amounts of MBM ash decreased the raw meal burnability in a slight extent, the free lime values remained below 2 wt % even with the highest MBM additions. The substitution of phosphorus for silicon had a positive impact on the hydration behaviour of ahte and bellte. Higher degrees of hydration comparing with the reference sample were observed, taking into account that the particle size distributions of milled clinkers were nearly the same.
Influence of using alternative fuels on cement manufacturing
Vlad, Nicoleta (author) / Nastac, Daniela (author) / Cazangiu, Nina (author) / Guslicov, Graziela (author) / Ioan, Maria (author)
2006
8 Seiten, 3 Bilder, 5 Tabellen, 9 Quellen
Conference paper
English
Alternative Fuels / The Impact of Alternative Fuels on The Cement Manufacturing Process
| British Library Conference Proceedings | 2002
Alternative fuels in the cement manufacturing process
| British Library Online Contents | 2014
Alternative fuels in cement manufacture
British Library Online Contents | 1999
Burning alternative fuels in cement kilns
| British Library Online Contents | 2014
Recent development on the uses of alternative fuels in cement manufacturing process
| Tema Archive | 2015