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Problems of the Formation of Dangerous Cr(VI) Compounds in Portland Cement and their Elimination Using New Refractories

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Abstract:

The article examines the physical-chemical features of the formation of the garnish on the lining of rotary kilns for firing cement clinker, the functional necessity of the garnish and the material science difficulties for its creation when developing new types of refractories, which solves the problem of the formation of Cr(VI) compounds in Portland cement. Thus, the analyzed problem of the formation of Cr(VI) compounds in Portland cements that are dangerous for the biocenosis and humans is the result of scientific and technological progress, the pursuit of leading manufacturers for the recycling of secondary raw materials and energy resources. At the same time, the timeliness of identifying the problem and its proactive, comprehensive solution with state support give a new impetus to the scientific and technical development of not only cement, but also related enterprises and scientific organizations. In Ukraine, the problem has been solved only in relation to the development and experimental testing of a new type of refractory material to replace magnesia-chromite for lining high-temperature zones of rotary kilns for firing cement clinker.

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Periodical:

Key Engineering Materials (Volume 1028)

Pages:

23-29

DOI:

https://doi.org/10.4028/p-54aT5g

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Online since:

October 2025

Authors:

Sergey Logvinkov, Oksana Borysenko*, Maryna Ivashchenko, Olena Maksimenko

Keywords:

Garnish, Periclase-Chromite Refractories, Periclase-Spinel Refractories, Portland Cement, Rotary Kiln, Thermal Shock Resistance

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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