Fives FCB enables Holcim to exceed its carbon dioxide emission reduction targets
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In July 2002, Holcim Costa Rica, a subsidiary of the Holcim Group, embarked in a very determined campaign to reduce its greenhouse gas emissions, entrusted Fives FCB with a contract for the supply of a complete 3,000 tpd production line for its Cartago plant, in Costa Rica. |
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In addition to the 3,000 tpd clinker burning line, equipped with a Zero-NOx precalciner using alternative fuels (liquid and solid industrial waste), the plant comprises a 110 tph cement grinding plant equipped with a Horomill® unit. Thanks to these innovative technologies developed by Fives FCB, the new production line benefits from a substantial improvement in thermal efficiency and from a lower electric consumption of the cement grinding. |
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One year after the plant commissioning in October 2004, Holcim gave its first report on the plant’s environmental performance: in 2005, the new unit emitted only 545 kg of CO2 per tonne of cement, which is 37% less than the average figure of 870 kg usually noticed by cement manufacturers.
The Fives FCB precalciner operated most of the time in ‘Zero-NOx’ emission and NOx emissions, measured on outlet from the preheater running on 100 % petcoke, were less than 500 mg/Nm3 at 10% O2. |
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Thanks to the Fives FCB technologies, Holcim exceeded not only the objectives set by the Kyoto protocol but also those it had defined itself.
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