Stick earthy firebrickmain raw material is clay, in clay main and mineral for kaolinite, contain the impurity such as quartz, micaceous, pyrite, feldspar. Give birth to clay to heat to 1300 ～1400 ℃ can become fireproof grog, after clinker is broken, deserve to compare according to certain grain, with unripe clay water of mixture mix into shapes. Unripe clay is 15% ～ 50% , clinker occupies 50% ～ 85% unripeArgillaceous scale can be decided according to its plasticity, the clay of plasticity deserves to answer into the quantity as far as possible little. 1400 ℃ are passed after adobe is dry firing it is argillaceous qualitative firebrick.
The clay that sticks earthy firebrick is earthy record substance, after adding water, have fictile, the meeting after high temperature to calcine has rock kind so hardness. Because its coefficient of expansion is lesser, without effect of much brilliant changeAnd clear grain structure, make the heatproof shake function that sticks earthy firebrick very good, fluctuant range is big, all be more than 10 times commonly (1100 ℃ water-cooling) , the line of this and argillaceous firebrickValue of coefficient of expansion is not quite great reach without phenomenon of much brilliant change again have organization of apparent grain structure to concern.
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