Low temperature preparation of belitic cement clinker

Zapata, Aída; Bosch, P.

doi:10.1016/j.jeurceramsoc.2008.11.004

Cited by 21 publications

(9 citation statements)

References 20 publications

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“…In our previous work, 9 ammonium nitrate was the additive used. The clinker obtained contained slightly more C 3 S and C 2 S, whereas the clinker synthesized with H 2 O 2 in the present work contained more C 12 A 7 and C 2 AS.…”

Section: Discussionmentioning

confidence: 99%

“…In a previous paper, 9 we reported on clinker synthesis using urea and ammonium nitrate, and in this work we report on the use of hydrogen peroxide as a combustion additive. The relative amount of each mineral reactant was estimated from the following global reaction: where the zeolite is calcium clinoptilolite (molar ratio Si/Al=3.5 and Ca/Si=0.14) as clinoptilolite is the main compound present in the San Luis Potosí mineral.…”

Section: Introductionmentioning

confidence: 99%

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A Combustion Method to Synthesize a Belite Cement Clinker

Zapata

Bosch

2010

Journal of the American Ceramic Society

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The calcination method is the usual method to synthesize cement clinkers. The production of ordinary Portland cement requires temperatures as high as 1450°C. High amounts of energy are used and huge flows of carbon dioxide are liberated to the atmosphere. In the literature, the combustion method has been often reported as a fast and effective method to prepare ceramics. The precursor solutions are metal nitrates and organic combustibles such as urea or glycine. The oxidation–reduction exothermic reaction is very fast. In this work, the effect of H2O2 addition to the combustion preparation of clinker is discussed. A conventional clinker prepared by calcinations at 1200°C is used for comparison purposes. The combustion preparation with H2O2 as an additive reduces calcination time and temperature.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Combustion Method to Synthesize a Belite Cement Clinker

Zapata

Bosch

2010

Journal of the American Ceramic Society

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“…The majority of PC production emissions was from clinker (86%) with 219 tons of CO 2 -eq, followed by electricity usage (7%), and hard coal operation and preparation (1.8%). The reason behind the huge GHG emissions of clinker is the massive amount of energy required to heat the mixture to 1450 C o (Zapata and Bosch, 2009). On the other hand, the highest GWP contributors from EICP were ammonia production (during urea production) and onsite emissions, with 31 and 20% of the total GWP, respectively.…”

Section: Global Warming Potentialmentioning

confidence: 99%

Life Cycle Assessment of Biocemented Sands using Enzyme Induced Carbonate Precipitation (EICP) for Ground Improvement Applications

Alotaibi

Arab

Abdallah

et al. 2021

Preprint

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Integrating sustainability goals into the selection of suitable ground improvement techniques is a global trend. Several bio-inspired and bio-mediated ground improvement techniques have been recently investigated as sustainable alternatives for traditional ground improvement techniques known for their high carbon footprint. Enzyme Induced Carbonate Precipitation (EICP) is an emerging bio-inspired soil improvement technique that is based on the hydrolysis of urea to precipitate carbonates that cement sand particles. Life cycle assessment (LCA) study was conducted to compare the use of traditional ground improvement using Portland cement with bio-cementation via EICP over a range of environmental impacts. The LCA results revealed that EICP soil treatment has nearly 90% less abiotic depletion potential and 3% less global warming potential compared to cement. Compared to cement, EICP has higher acidification and eutrophication potentials due to byproducts during the hydrolysis process. The sensitivity analysis of EICP emissions showed that reducing and controlling the EICP process emissions and using waste non-fate milk has resulted in significantly fewer impacts compared to the EICP baseline scenario.

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“…The production of cement requires temperatures around 1450 ºC (5), while lime is obtained from calcareous stone at ca. 900 ºC (6,7).…”

Section: Introductionmentioning

confidence: 99%