Phase V – Laboratory technology in order to perform the clinkers with low consumption of heat and low CO2 emissions

Assessment of using the non-carbonated wastes on the microstructure of clinker and Portland cement with low consumption of heat and low CO₂ emissions (15 September 2010) Specific objectives for this phase were the following:

1. Performing technology of clinker obtaining with low consumption of heat and low CO₂ emissions

– Characterization the raw mixes with content of non-carbonated materials: grindability, burnability;

– Calculation of heat theoretic consumption – Theoretical calculation of emitted CO₂ ;

– Assessment impact using non-carbonated wastes on environment

2. Assessment of non-carbonated wastes effect with/without mineralizator on clinker and cement quality:

– Performing of optimum raw mixes, efficient from energetic point of view and of CO₂ emissions, structural and chemical characterization of these (analyses through optical microscopy, X-rays diffraction, selective electron-scan microscopy (type SEM) coupled with EDAX well, chemical analyze);

– Cements performing; – Evaluation of hydraulic activity for the cements obtained from laboratory clinker through physical, chemical and mechanical methods (mechanical resistances, chemical bound water, X-rays analyze).

3. Results dissemination

– Jenica Paceagiu, Ileana Mohanu, Cosmin Drăgănoaia, Elena Holban – Experimental Investigation of Steel Slag used as Raw Material in Portland Cement Manufacture, 2nd International Conference on Chemistry and Chemical Engineering, Timişoara, 27-29 May, 2010 (poster P.612)

– Jenica Paceagiu, Ileana Mohanu, Cosmin Drăgănoaia, Reuse of metallurgical slags in eco-cement clinker production, 10^th International Multidisciplinary Scientific Geo-conference & Expo – Modern Management of Mine Producing, Geology and Environmental Protection – SGEM 2010, Albena, 20 – 26 June (oral presentation), SGEM 2010 Conference Proceedings, vol. II, p.741-748, ISBN 10: 954-918181-2, ISBN 13: 978-954-91818-4

– Jenica Paceagiu, Recycling of fly ash in cement manufacturing, 10^th International Multidisciplinary Scientific Geo-conference & Expo – Modern Management of Mine Producing, Geology and Environmental Protection – SGEM 2010, Albena, 20 – 26 June (poster), SGEM 2010 Conference Proceedings, vol. II, p.925-932, ISBN 10: 954-918181-2, ISBN 13: 978-954-91818-4

– Jenica Paceagiu, Elena Rădulescu, Ana Maria Dragomir, Ramona Hotnog, Implications of the use of steel slag to clinker manufacture: Laboratory test result, Romanian Journal of Materials, vol. 40 (4), 2010, ISSN 1583-3186

– Jenica Paceagiu, Daniela Năstac, Margareta Toader, Cosmin Drăgănoaia, Valorization of high-carbon fly ash as raw material in the manufacture of Portland cement clinker, 13^th International Congress on the Chemistry of Cement, 3 – 8 July 2011, Madrid, Spain (www.icccmadrid2011.org) (abstract accepted)