refractory clay

基本解释

Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China.
煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；
http://www.chazidian.com
Phosphoric acid technical grade can be used to produce variety of phosphate, refractory clay and rust –proof coating;
工业级磷酸用作生产各种磷酸盐，磷酸耐火泥，涂料工业用作金属防锈漆；
China has begun to restrict the mining and production of refractory clay and fluorite over concerns about reserves decreasing and environmental pollution, the central government's website said Sunday.
据中国政府网3日消息，由于资源储量快速下降和环境污染严重等原因，国家要求开始对耐火粘土和萤石的开采和生产进行控制。
www.chinadaily.com.cn