A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to a preparing method of cordierite self-glazed ceramic. A raw material formula of a green body comprises following components by weight: 20-30 wt% of burnt talc, 10-15 wt% of raw talc, 15-30 wt% of kaolin, 0-5 wt% of lithium feldspar, 5-12 wt% of feldspar, 2-5 wt% of bentonite, 15-18 wt% of aluminum oxide, and 0-5 wt% of quartz. A ceramic product in which a glaze layer is naturally formed on the surface of the green body is prepared by preparing the materials, ball milling, forming and firing. By adding the lithium feldspar and the quartz based on a formula of cordierite ceramic, the firing temperature is reduced, and the firing range is expanded. In addition, by a manner of prolonging the temperature maintaining time, more glass phases are formed on the surface of the green body, a glazing step in production is omitted, the production efficiency is increased, and the production cost is saved. The prepared ceramic product is good in transmissivity, high in whiteness and high in mechanical strength, so that the ceramic has a wide market.
The invention relates to a preparing method of cordierite self-glazed ceramic. A raw material formula of a green body comprises following components by weight: 20-30 wt% of burnt talc, 10-15 wt% of raw talc, 15-30 wt% of kaolin, 0-5 wt% of lithium feldspar, 5-12 wt% of feldspar, 2-5 wt% of bentonite, 15-18 wt% of aluminum oxide, and 0-5 wt% of quartz. A ceramic product in which a glaze layer is naturally formed on the surface of the green body is prepared by preparing the materials, ball milling, forming and firing. By adding the lithium feldspar and the quartz based on a formula of cordierite ceramic, the firing temperature is reduced, and the firing range is expanded. In addition, by a manner of prolonging the temperature maintaining time, more glass phases are formed on the surface of the green body, a glazing step in production is omitted, the production efficiency is increased, and the production cost is saved. The prepared ceramic product is good in transmissivity, high in whiteness and high in mechanical strength, so that the ceramic has a wide market.
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