Incorporation of Higher Amounts of P2O5 in Clinker ? New Possibilities

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F11%3ACEMMKM20" target="_blank" >RIV/26232511:_____/11:CEMMKM20 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Incorporation of Higher Amounts of P2O5 in Clinker ? New Possibilities

Original language description

So far, cement factories using meat and bone meal (MBM) as alternative fuel have not been able to incinerate this fuel in quantities higher than corresponding to 1 wt.% P2O5 in the resulting clinker. The detailed study of the chemistry of individual minerals of clinkers prepared from raw meals containing calcined MBM has revealed the existence of other than earlier assumed C2S-C3P substitution, the berlinite substitution mechanism. Supporting the latter by addition of excess Al (without concurring Fe) led to production of white cement with up to 3.5 wt.% P2O5, possessing good mechanical properties. Further research in more complex substitutions, involving besides Al and P also Mg, Na, K, and S enabled to make clinkers with composition close to common Portland clinkers, containing up to 3 wt.% P2O5. For introduction of even higher amounts MBM in cement kilns without negative effects of P2O5 on clinker melt and clinker phase composition, the MBM was input in the kiln as pressed pellets,

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

JN - Civil engineering

OECD FORD branch

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Project

<a href="/en/project/FT-TA3%2F026" target="_blank" >FT-TA3/026: Dosing optimization of alternative fuels with high content of P2O5 during cement production.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů