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Облицовочная строительная керамика на базе кальций-силикатного техногенного сырья

Облицовочная строительная керамика на базе кальций-силикатного техногенного сырья

Abstract

Перспективным сырьем для получения керамических масс с малой усадкой, низкой температурой спекания являются различные отходы промышленности, химический состав которых соответствует или ориентируется на химический состав волластонита и рассматриваются как заменители последнего. С учетом теоретических предпосылок и исследований по синтезу волластонита наиболее перспективным для направленного синтеза данного минерала является нефелиновый шлам. Практическое использование нефелинового шлама при производстве облицовочных керамических материалов обусловлено группой термохимических свойств шлама, определяющих возможность высокотемпературного взаимодействия шлама в ряде физико-химических систем и формирования спеков на его основе. В статье представлены результаты исследований синтеза волластонита в системе CaO – SiO2 в структуре облицовочных керамических материалов. Определены оптимальные технологические параметры получения облицовочных керамических материалов. Выявлена оптимальная область соотношения CaO/SiO2, обеспечивающая достаточно высокий выход волластонита при соответствующей этому высокой прочности образцов на изгиб (18 – 27,5 МПа), при этом показатели водопоглощения соответствуют требованиям стандартов (менее 12 %).

A promising raw material for ceramic materials with low shrinkage, low sintering temperature are the various industrial wastes, chemical composition of which corresponds to or is focused on the chemical composition of wollastonite, and are considered as substitutes for the latter. Given the theoretical background and research on the synthesis of wollastonite, the most promising for the direct synthesis of this mineral is nepheline sludge. Practical use of nepheline in the production of ceramic materials due to facing a group of thermochemical properties of sludge, determining the possibility of high-temperature interaction of sludge in some physico-chemical systems and the formation of cakes based on it. The results of research synthesis of wollastonite in the system CaO SiO2 in the structure facing ceramic materials. The optimal process parameters for obtaining facing ceramic materials. The optimum area ratio CaO/SiO2, provides a sufficiently high output corresponding to that of wollastonite at high flexural strength of the samples (18 27.5 MPa), and the figures correspond to the standards of water absorption (less than 12 %).

Keywords

ВОДОПОГЛОШЕНИЕ, МОЛЯРНОЕ СООТНОШЕНИЕ CAO/SIO2, ДАВЛЕНИЕ ФОРМОВАНИЯ, СПЕКАНИЕ, ВОЛЛАСТОНИТ, НЕФЕЛИНОВЫЙ ШЛАМ, MOLAR RATIO CAO/SIO2

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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