METHOD OF SELECTING COMPOSITION OF HEAT-RESISTANT STONE CASTING Russian patent published in 2014 - IPC C04B30/00 

FIELD: chemistry.

SUBSTANCE: invention relates to selection of mineralogical composition of heat-resistant stone casting for operation under conditions of higher temperatures 250-900°C, which can be used at enterprises of metallurgical, chemical, ore mining and processing, power and other fields of industry. On diagram "albite-anortite-diopside" (Al-An-Di) in the field 1300-Di-1300°C figurative point of composition of heat-resistant stone casting is selected, quantitative content of components SiO₂, Al₂O₃, CaO, MgO, Na₂O is selected on the diagram in said point and selection of appropriate industrial mineralogical composition is performed. After that, recalculation is carried out with quantitative combination of free Fe₂O₃ with Al₂O₃, and TiO₂, MnO, FeO with MgO, and after that, with application of specified quantitative content of SiO₂, Al₂O₃, CaO, MgO, Na₂O determined are: figurative point on the diagram, quantitative content of SiO₂, Al₂O₃, CaO, MgO, Na₂O in said point, with further estimation of corresponding it physical-mechanical parameters: for points, located in the field of diagram Al-An-Di above the liquidus line 1300-1300°C, composition can be used in production, for points below liquidus line 1300-1300°C it is necessary to select new industrial composition.

EFFECT: more accurate selection of stone casting compositions with preliminarily specified characteristics and account of admixtures, present in raw materials.

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