爐身熔(rong)(rong)池部(bu)份(fen),鋼板(ban)(ban)與(yu)耐(nai)火材料(liao)之(zhi)間(jian)(jian)襯(chen)以5毫(hao)(hao)米的(de)(de)隔熱石(shi)(shi)(shi)棉板(ban)(ban),熔(rong)(rong)池由普(pu)通(tong)粘(zhan)土耐(nai)火磚(zhuan)砌(qi)成長方形,前(qian)墻(qiang)(qiang)的(de)(de)下部(bu)(安裝(zhuang)結晶(jing)器的(de)(de)部(bu)位(wei))砌(qi)一塊65X230X230毫(hao)(hao)米外(wai)方內圓的(de)(de)粘(zhan)土磚(zhuan)以備嵌入石(shi)(shi)(shi)墨(mo)底(di)(di)座,前(qian)墻(qiang)(qiang)的(de)(de)上部(bu)也只宜砌(qi)130毫(hao)(hao)米厚(hou)(hou)的(de)(de)粘(zhan)土磚(zhuan)與(yu)石(shi)(shi)(shi)棉板(ban)(ban)貼緊(jin),因為此(ci)處需(xu)要安裝(zhuang)石(shi)(shi)(shi)墨(mo)塞桿,前(qian)墻(qiang)(qiang)過(guo)(guo)厚(hou)(hou)將使石(shi)(shi)(shi)墨(mo)底(di)(di)座增長,影響拉(la)鑄時(shi)的(de)(de)液(ye)體金屬(shu)溫度過(guo)(guo)早下降,實(shi)踐證明前(qian)墻(qiang)(qiang)過(guo)(guo)厚(hou)(hou)是不利于拉(la)鑄的(de)(de),兩邊側墻(qiang)(qiang)及(ji)后墻(qiang)(qiang)可(ke)(ke)(ke)以砌(qi)130毫(hao)(hao)米厚(hou)(hou)的(de)(de)耐(nai)火磚(zhuan),砌(qi)磚(zhuan)與(yu)爐殼(ke)之(zhi)間(jian)(jian)的(de)(de)空隙用(yong)石(shi)(shi)(shi)英砂填充,熔(rong)(rong)池底(di)(di)部(bu)則可(ke)(ke)(ke)以砌(qi)200毫(hao)(hao)米左右(you)的(de)(de)耐(nai)火磚(zhuan)并墊(dian)以石(shi)(shi)(shi)英砂,應根據安裝(zhuang)結晶(jing)器位(wei)置的(de)(de)高低來調節,熔(rong)(rong)池底(di)(di)部(bu)可(ke)(ke)(ke)以適當砌(qi)厚(hou)(hou)些(xie)。
爐底石部份:用大小不(bu)同粒度的石英(ying)砂筑成(cheng),石英(ying)砂含二氧化硅(SiO2)不(bu)低于98.5%,應是干燥,潔凈的,另外加入粘結劑(ji)——硼酸3~3.5%。