焦宝石，中国山东省淄博地区产出的一种优质硬质耐火粘土。标准的焦宝石原矿Al2O3含量38%，煅烧后Al2O3含量为44%左右，Fe2O3<2%。成分稳定，质地均匀、结构致密，断面呈贝壳状，白色，用于生产优质粘土质耐火材料。专业术语为一级硬质粘土熟料，主要化学成分为AL2O3 和SiO2，伴有少量Fe2O3 和微量的Na2O、K2O，主要矿物为高岭土。
产品特点：耐碱砖以硅石、焦宝石为原料，加入适量添加剂。
Properties of Products: Raw materials are silica and flint, together with some additives.
焦宝石是重要的耐火原料，广泛用于冶金、建材、陶瓷等行业。
The Chamotte is an important refractory raw material, and it is extensively applied to the industry of metallurgy, ceramics etc.
浇注料骨料是由焦宝石、普通电熔莫来石、红柱石三种原材料组成。
The aggregate for the cast material consists of three kinds of raw material including pyrojewel, common electrically molten mullite and andalusite;
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