Abstract
In this paper, the system of natural mineral alkali fluxes used in typical mineral industry technologies was analyzed. The main objective was to lower the melting temperature of the flux systems. The research has shown that the best melting parameters in the Ca–Mg– (Li,Na,K) system were characterized by the composition: A-eutectic 20% and wollastonite 80%, and it was reached at temperature 1140 °C; in addition, this set had the widest melting interval. Selected thermal parameters of mineral flux systems were also calculated. The technological properties of mineral composites such as shrinkage and brightness were also analyzed.
Highlights
Feldspar raw materials play an important role in the modern mineral industry
Feldspar raw materials are rich in alkalis (K2 O + Na2 O), which are mainly bound in the form of aluminosilicates, i.e., potassium feldspars and sodium-calcium feldspars
Visualization seen from the Parameters conducted for the first system of Thermal
Summary
Feldspar raw materials play an important role in the modern mineral industry. They contribute significantly to lowering the sintering temperature of various mineral materials. Low-melting sodium-potassium aluminosilicates dissolve large amounts of quartz and clay substances, causing densification of the material and creating conditions for recrystallization. Feldspar raw materials are rich in alkalis (K2 O + Na2 O), which are mainly bound in the form of aluminosilicates, i.e., potassium feldspars (orthoclase, microcline, sanidine, adular) and sodium-calcium feldspars. Albite was used as the sodium substrate of the study. Stochiometric albite contains 11.8%wt Na2 O, 19.4%wt A12 O3 and
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