變更

{| class="https://image.baidu.com/search/index?ct=201326592&tn=baiduimage&word=%E4%B8%8D%E5%AE%9A%E5%BD%A2%E8%80%90%E7%81%AB%E6%9D%90%E6%96%99&pn=96&spn=0&ie=utf-8&oe=utf-8&cl=2&lm=-1&fr=&se=&sme=&cs=3687333050%2C1138538436&os=763928320%2C312218213&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fnimg.ws.126.net%2F%3Furl%3Dhttp%253A%252F%252Fdingyue.ws.126.net%252F2020%252F0916%252F0772ff7aj00qgqeie0011d000dw00app.jpg%26thumbnail%3D660x2147483647%26quality%3D80%26type%3Djpg%26refer%3Dhttp%3A%2F%2Fnimg.ws.126.net%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Dauto%3Fsec%3D1672585536%26t%3D54f7dd1d0c1b8a8149dc19fbc2a0e817&di=7169026086108397569&tt=1&is=0%2C0&adpicid=0&gsm=96" style="float:right; margin: -10px 0px 10px 20px; text-align:left"|<center>'''2不定形耐火材料'''<br><imgsrc="3 https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fnimg.ws.126.net%2F%3Furl%3Dhttp%253A%252F%252Fdingyue.ws.126.net%252F2020%252F0916%252F0772ff7aj00qgqeie0011d000dw00app.jpg%26thumbnail%3D660x2147483647%26quality%3D80%26type%3Djpg&refer=http%3A%2F%2Fnimg.ws.126.net&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1672585536&t=54f7dd1d0c1b8a8149dc19fbc2a0e817" width="280"></center><small> 圖片來 自4自百度</small>

由具有一定粒度级配的[[耐火骨料]] <ref>[[马先, 刘建睿, 李勉,等. 耐火骨料粒度与粒形对铸件表面粗糙度的影响（J）. 特种铸造及有色合金, 2013, 33(4):312-315.]]</ref> 和粉料、结合剂、外加剂混合而成的耐火材料，又称散状耐火材料。用于热工设备衬里，不经烧成工序，直接烘烤使用。同[[耐火砖]]比较，具有工艺简单（因省去烧成工序）、节约能源、成本低廉、便于机械化施工等特点。在某些热工设备上使用效果比耐火砖好。