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耐火粘土与其他金属矿、非金属矿不同,一般生产要求的品种、品级比较多,工业指标中对品极因素规定较严格,除Al_2O_3+TiO_2、Fe_2O_3、CaO 等合量及灼减量外,还要求耐火度、可塑性等。圈定矿体时,品级不采用平均品位,按单个样品划分,确定的条件本身也比较复杂。如何根据矿区具体条件、从实际情况出发,正确地确定矿区工业指标,对多快好省地进行地质勘探工作,满足生产需要,合理利用国家资源具有现实意义。最近在确定工业指标方面有不少改进,但对具体矿区在划分品极、规定品极条件
Refractory clay is different from other metal ores and non-metal ores. Generally, the varieties and grades of general requirements for production are relatively high. The industrial products have more stringent requirements on the quality of the products. Except for the amount of Al 2 O 3 + TiO 2, Fe 2 O 3, CaO, Also requires resistance to fire, plasticity and so on. When delineating the ore body, the grade does not use the average grade, according to a single sample division, to determine the conditions themselves are more complicated. According to the specific conditions of the mines, proceeding from the actual conditions, it is of practical significance to correctly determine the industrial indicators of the mines and to carry out the geological prospecting work to the provinces that are more efficient and economical, to meet the production needs and to make rational use of the national resources. Recently, there have been many improvements in the determination of industrial indicators, but the specific mining area in the division of products, the provisions of the very conditions