Abstract
This report discusses greenhouse gas emissions from the cement industry, and opportunities for CO{sub 2} management. Cement-related greenhouse gas emissions originate from fossil fuel combustion at cement manufacturing operations (about 40% of the industry's emissions), transport activities (about 5%) and the combustion of fossil fuel that is required to make the electricity consumed by the cement manufacturing operations (about 5%). The remaining cement-related emissions (about 50%) originate from the manufacturing process that converts limestone (CaCO{sub 3}) to calcium oxide (CaO), the primary precursor to cement. It is chemically impossible to convert CaCO{sub 3} to CaO, and then cement clinker, without generating CO{sub 2}. The report favourably projects the use of fly ash blended cements as a conventional CO{sub 2} management approach. The report states that the use of pozzolans, such as blast furnace slag, fly ash, and natural pozzolans for clinker substantially reduces process-related CO{sub 2} emissions. It represents one of the best technically proven approaches for reducing process emissions. The report further suggests advanced CO{sub 2} management options such as 'Hybrid Energy-Cement Plants' in which the fly ash and bottom ash may be converted to cement clinker. 29 refs., 19 figs., 13 tabs., 1 app.
Citation Formats
Humphreys, K, and Mahasenan, M.
Towards a sustainable cement industry. Substudy 8: climate change.
Switzerland: N. p.,
2002.
Web.
Humphreys, K, & Mahasenan, M.
Towards a sustainable cement industry. Substudy 8: climate change.
Switzerland.
Humphreys, K, and Mahasenan, M.
2002.
"Towards a sustainable cement industry. Substudy 8: climate change."
Switzerland.
@misc{etde_20269589,
title = {Towards a sustainable cement industry. Substudy 8: climate change}
author = {Humphreys, K, and Mahasenan, M}
abstractNote = {This report discusses greenhouse gas emissions from the cement industry, and opportunities for CO{sub 2} management. Cement-related greenhouse gas emissions originate from fossil fuel combustion at cement manufacturing operations (about 40% of the industry's emissions), transport activities (about 5%) and the combustion of fossil fuel that is required to make the electricity consumed by the cement manufacturing operations (about 5%). The remaining cement-related emissions (about 50%) originate from the manufacturing process that converts limestone (CaCO{sub 3}) to calcium oxide (CaO), the primary precursor to cement. It is chemically impossible to convert CaCO{sub 3} to CaO, and then cement clinker, without generating CO{sub 2}. The report favourably projects the use of fly ash blended cements as a conventional CO{sub 2} management approach. The report states that the use of pozzolans, such as blast furnace slag, fly ash, and natural pozzolans for clinker substantially reduces process-related CO{sub 2} emissions. It represents one of the best technically proven approaches for reducing process emissions. The report further suggests advanced CO{sub 2} management options such as 'Hybrid Energy-Cement Plants' in which the fly ash and bottom ash may be converted to cement clinker. 29 refs., 19 figs., 13 tabs., 1 app.}
place = {Switzerland}
year = {2002}
month = {Mar}
}
title = {Towards a sustainable cement industry. Substudy 8: climate change}
author = {Humphreys, K, and Mahasenan, M}
abstractNote = {This report discusses greenhouse gas emissions from the cement industry, and opportunities for CO{sub 2} management. Cement-related greenhouse gas emissions originate from fossil fuel combustion at cement manufacturing operations (about 40% of the industry's emissions), transport activities (about 5%) and the combustion of fossil fuel that is required to make the electricity consumed by the cement manufacturing operations (about 5%). The remaining cement-related emissions (about 50%) originate from the manufacturing process that converts limestone (CaCO{sub 3}) to calcium oxide (CaO), the primary precursor to cement. It is chemically impossible to convert CaCO{sub 3} to CaO, and then cement clinker, without generating CO{sub 2}. The report favourably projects the use of fly ash blended cements as a conventional CO{sub 2} management approach. The report states that the use of pozzolans, such as blast furnace slag, fly ash, and natural pozzolans for clinker substantially reduces process-related CO{sub 2} emissions. It represents one of the best technically proven approaches for reducing process emissions. The report further suggests advanced CO{sub 2} management options such as 'Hybrid Energy-Cement Plants' in which the fly ash and bottom ash may be converted to cement clinker. 29 refs., 19 figs., 13 tabs., 1 app.}
place = {Switzerland}
year = {2002}
month = {Mar}
}