爐(lu)(lu)身熔(rong)(rong)池(chi)部份,鋼板與耐火(huo)材料之(zhi)間(jian)襯以(yi)5毫(hao)(hao)米的(de)(de)隔熱石(shi)(shi)(shi)(shi)棉(mian)板,熔(rong)(rong)池(chi)由普通(tong)粘(zhan)土(tu)耐火(huo)磚砌(qi)(qi)成長方形(xing),前(qian)墻(qiang)(qiang)(qiang)的(de)(de)下(xia)部(安(an)裝(zhuang)結晶(jing)器(qi)的(de)(de)部位)砌(qi)(qi)一塊(kuai)65X230X230毫(hao)(hao)米外方內圓的(de)(de)粘(zhan)土(tu)磚以(yi)備嵌(qian)入石(shi)(shi)(shi)(shi)墨(mo)(mo)底(di)座,前(qian)墻(qiang)(qiang)(qiang)的(de)(de)上部也只(zhi)宜砌(qi)(qi)130毫(hao)(hao)米厚(hou)的(de)(de)粘(zhan)土(tu)磚與石(shi)(shi)(shi)(shi)棉(mian)板貼(tie)緊,因為此(ci)處需要安(an)裝(zhuang)石(shi)(shi)(shi)(shi)墨(mo)(mo)塞桿,前(qian)墻(qiang)(qiang)(qiang)過(guo)厚(hou)將使(shi)石(shi)(shi)(shi)(shi)墨(mo)(mo)底(di)座增長,影響拉鑄時的(de)(de)液體金屬(shu)溫度過(guo)早(zao)下(xia)降,實踐證明前(qian)墻(qiang)(qiang)(qiang)過(guo)厚(hou)是(shi)不利于拉鑄的(de)(de),兩邊(bian)側(ce)墻(qiang)(qiang)(qiang)及后墻(qiang)(qiang)(qiang)可以(yi)砌(qi)(qi)130毫(hao)(hao)米厚(hou)的(de)(de)耐火(huo)磚,砌(qi)(qi)磚與爐(lu)(lu)殼之(zhi)間(jian)的(de)(de)空(kong)隙用石(shi)(shi)(shi)(shi)英砂填充,熔(rong)(rong)池(chi)底(di)部則可以(yi)砌(qi)(qi)200毫(hao)(hao)米左右(you)的(de)(de)耐火(huo)磚并墊以(yi)石(shi)(shi)(shi)(shi)英砂,應根據(ju)安(an)裝(zhuang)結晶(jing)器(qi)位置的(de)(de)高低來調節,熔(rong)(rong)池(chi)底(di)部可以(yi)適當砌(qi)(qi)厚(hou)些(xie)。
爐底石部份:用(yong)大小不同粒度的石英砂(sha)筑(zhu)成,石英砂(sha)含二氧化硅(gui)(SiO2)不低于98.5%,應是干(gan)燥,潔凈(jing)的,另外加入粘結劑——硼酸(suan)3~3.5%。