| 摘要 |
<p>A low temperature calcined porcelain composed mainly of a vitreous substance and including aluminum oxide, a clay component, a binder and, if necessary, a coloring agent is disclosed. This porcelain is prepared according to a process comprising adding water to a mixture composed mainly of a vitreous substance and including alumina, silica or a naturally occurring composition of alumina and silica, a binder and, if necessary. a coloring agent, molding the mixture into an optional form by compression molding or by kneading molding, and calcining (heating and hardening) the molded article at a relatively low temperature.</p> |
