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Cement International


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Predicting the sintering behaviour
of Portland cement raw mealthrough knowledge
of the raw meal homogeneity

T. Scholten, A. Wolter, Institute of Non-Metallic Materials, TU Clausthal, Clausthal-Zellerfeld, A. Blasig, Fermacell GmbH, Duisburg, Germany


A new method has been developed at the Institute for Non-Metallic Materials at Clausthal University of Technology that, under given burning conditions, makes it possible to estimate the degree of alite formation that is dependent on the heterogeneity. The raw meal homogeneity is obtained using focused X-ray radiation and then quantified by a new procedure. The expected degree of alite formation is derived as the quotient of the alite content determined in the laboratory burning test and the thermodynamic equilibrium. Associated with this is the aim to achieve a higher alite yield by measures to refine and homogenize the raw meal.


Summary CEMENT INTERNATIONAL 01/2017 pp 64-69

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01/2017 Content:

Best practice approaches for co-processing of alternative fuels in the cement industry

Plant upgrade with the Köppern 2-Stage Koesep –
a combined air classifier for High Pressure Grinding Rolls applications

Making central cone silos even better

A new process for production of cement clinker from steelmaking slags

Calcium Carbonate Looping: CO2 capture by using limestone in the cement industry

Predicting the sintering behaviour of Portland cement raw meal through knowledge of the raw meal homogeneity