Application to Bone-china of R_2O-RO-Al_2O_3-B_2O_3-SiO_2 System;

The item is studied on the five-element-system ,which is mainly consisted by K_2O,CaO, Al_2O_3,B_2O_3 and SiO_2, through adding a few kinds of flux oxides, study them flux domino effect and their capability,find out them some change rules and forming-glaze’mechanism of R_2O-RO-Al_2O_3-B_2O_3-SiO_2 system, offer a way of study on bone-china ,which doesn’t contain lead-element.

for long time,the traditinal bone china has always used the process of double firing,but it is inefficiency and wastes plenty of energy for the hollow wares.

This paper has worked out a perfect producing processes for bone china decorated under glaze through the analyzing on civil ceramic decorating under glaze and connecting the producing processes and product characteristices of bone china in local ceramics zone.

Lead free frit glaze for bone china has been made successfully by replacing PbO in lead frit glaze with K 2O,SrO and Li 2O.

Based on the limitation of enwrapped granules technology of the imitation rock porcelain tiles, a new way which can not only improve the enwrapping efficiency but also save a lot of manpower and material resources was introduced in this paper.