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.

This paper telled the developing history and the feature of the mould and the equipment for high pressure casting of porcelain and sanitoryware, introduced the operatign method of this equipment, and plained the method of regulating casting slip.

Application of pug was changed in morden ceramics art from traditional ceramics art,the change is opportunity for modern ceramics art.

According to the theory about stress and strain of ceramic muds,the measuring methods of plasticity indexes and pressed plasticity indexes are analysed and compared,the law of stress and strain of ceramic muds and the infuence factors on them are studied,too.

The authors have done research and analysis and have made experiments on clay choice and process technology in producing square-shaped purple-clay teapots.

High temperature gassolid suspension reactor was used to simulate decomposition of cement raw meal.

Thermal decomposition of cement raw meal and limestone was investigated under pure N2 atmosphere with thermo-gravimeter (TG).

Using self-made carbon steel crucible instead of poroelain crucible is an economical, practical, simple and raoid way to determine the carbon content in cement raw meal with phosphogypsum.