Influence of Ca/P ration on crystal phases and microstructures of raw materials to synthesize bone china;

The bone china materials were prepared from the bones of pig, cattle and sheep by hightemperature calcining(at 1320 °C, 1400 °C, and 1450 °C).

In this article,we discussed the methods of Plasticizing of bone china mud in as pects of the raw materials,the processes of mud making especially in the plasticizer.

The reasons of forming the bone china defect "Pinhole" were approached in the light of experiments,and the effective ways to control defect "pinhole"were given.

The problems should paid attention to in Preparation process of casting slip for the bone china were proposed by means of the production and author experiences.

By means of screening slip of bone china to obtain>61μm particles and firing those particles,the relationships between spot defects and quantity and size of residue screened out were made sure.

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.