MEDIUM-LOW TEMPERATURE SINTERED FINE BONE CHINA AND MANUFACTURING METHOD THEREOF

The present invention relates to a medium-low temperature sintered fine bone china and a manufacturing method thereof. The chemical composition of the china is: SiO2 52-60%, Al2O3 28-37%, K2O 1-4%, Na2O 1-2%, CaO 3-8%, MgO 1-3%, and P2O5 1-3%; the materials used are: bone ash 3-8%, kaolin 32-45%, aluminum oxide 10-20%, and frit 35-50%, while the sintering temperature is between 1170°C-1250°C. A "high temperature bisque firing, low temperature glaze firing" or a "low temperature bisque firing, high temperature glaze firing" dual pass firing technique can be used; a high temperature single pass firing technique can also be used. The fine bone china of the present invention has the visual effect of traditional bone china, improved physical and chemical properties over bone china, and the advantages of a lower bone char usage and a lower firing temperature to enable lower production costs and energy consumption. La présente invention concerne une porcelaine tendre anglaise fine frittée à température moyenne ou ba