硅砖属酸性耐火材料，具有良好的抗酸性渣侵蚀的能力，荷重软化温度高达1640～1670℃，在高温下长期使用体积比较稳定。
硅砖中裂纹包括表面裂纹和层裂。
The crack occured in silica brick generally includes surface crack and layer crack.
在筑炉前，对硅砖进行切、磨时，有时发现砖的内部有裂纹。
The inner cracks of silicon brick aare sometimes discovered during grinding and cutting of brick before masonry.
研制了以磷酸二氢铝为粘结剂，硅砖粒、粉为骨料的保温冒口易割片。
Phosphate knock-off core of scrap silica brick aggregate for steel castings has been developed with experiment method.
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