Effect of Pair-Mineralizer on the Reaction of Alite and Calcium Langbeinite Formation

Abstract:

This paper investigates the effect of the pair-minerializer (CaSO4,-CaF2) on the reaction of alite, belite and calcium langbeinite formation with different alkali and sulfate contents. A set of clinker samples was prepared by adding laboratory grade reagents of (NH4)2SO4, CaF2 and K2CO3 to the cement raw mixes. The mineralogical composition of clinker was analyzed by X-ray powder diffraction, and the quantity of minerals was evaluated by using TOPAS software. As the experimental results, the total amount of calcium silicate minerals was rapidly increased with the addition of F and SO3 components simultaneously as pair-mineralizer with K2O more than the value which mineralizer was added separately. Also, in the case of adding K2O only to the raw mixes, the amount of alite is decreased after clinkering. However, if alkali (K2O) and pair-minerializer (CaSO4,-CaF2) were added simultaneously, the quantity of alite and calcium langbeinite mineral increased because of the formation of stable clinker minerals by the reaction of alkali (K2O) and sulfate.

• Periodical: Materials Science Forum (Volumes 510-511)
• Pages: 622-625
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.510-511.622
• Online since: March 2006
• Authors: Woo Teck Kwon, Young Phil Kim, Y. Kim, Soo Ryong Kim, Seong Youl Bae
• Keywords: Alite, Calcium Langbeinite, Cement, Clinkering Reaction, Mineralizer

References

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