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一、前言硅灰石是一种天然的钙质硅酸盐(Casio_3)。呈板状和针状晶体。在晶体分裂时,仍然形成针状颗粒。硅灰石的针状颗粒首先在陶瓷工业中得到利用。加有硅灰石的陶瓷配料,当加热到最高温度时,这种配料和其他配料一样只是部分地熔化,而未熔化的硅灰石针状颗粒残留物,生成一种阻碍改变原有体积的密实的骨架,使在熔化和结晶过程中体积不变。因此,所得到的陶瓷坯体,具有非常可贵的性能:第一,它保持了成型时所定的尺寸;第二,由于孔隙度大和网状结构,尽管陶瓷坯体强度低,但不易碎。在国外硅灰石主要用于制造陶瓷釉面砖,这
First, the foreword Wollastonite is a natural calcium silicate (Casio_3). Plate and needle crystal. Needle-like particles are still formed when the crystals are cleaved. Wollastonite acicular particles are first used in the ceramic industry. The wollastonite-added ceramic ingredients, when heated to the highest temperature, only partially melted, as did the other ingredients, while the unmelted wollastonite needle-like particles left a residue that hindered the change of the original volume The dense skeleton keeps the volume constant during melting and crystallization. Therefore, the resulting ceramic body has very valuable properties: first, it retains the dimensions set at the time of molding; secondly, it is not brittle despite the low strength of the ceramic body due to its porosity and network structure. Wollastonite is mainly used in the manufacture of ceramic glazed tiles abroad