爐身熔(rong)(rong)池(chi)(chi)部(bu)(bu)份,鋼板與(yu)(yu)(yu)耐火(huo)材料之間襯以(yi)5毫米(mi)(mi)(mi)的(de)隔熱石(shi)(shi)棉板,熔(rong)(rong)池(chi)(chi)由普通粘土耐火(huo)磚(zhuan)砌(qi)成長方(fang)形,前(qian)(qian)墻(qiang)(qiang)(qiang)的(de)下部(bu)(bu)(安裝(zhuang)結(jie)晶器的(de)部(bu)(bu)位(wei))砌(qi)一塊65X230X230毫米(mi)(mi)(mi)外方(fang)內圓的(de)粘土磚(zhuan)以(yi)備嵌入石(shi)(shi)墨底座,前(qian)(qian)墻(qiang)(qiang)(qiang)的(de)上部(bu)(bu)也只宜砌(qi)130毫米(mi)(mi)(mi)厚(hou)的(de)粘土磚(zhuan)與(yu)(yu)(yu)石(shi)(shi)棉板貼緊,因為此處需要安裝(zhuang)石(shi)(shi)墨塞(sai)桿,前(qian)(qian)墻(qiang)(qiang)(qiang)過厚(hou)將使石(shi)(shi)墨底座增長,影響拉鑄時的(de)液體(ti)金屬溫度過早下降(jiang),實踐證明(ming)前(qian)(qian)墻(qiang)(qiang)(qiang)過厚(hou)是不利于(yu)拉鑄的(de),兩(liang)邊側墻(qiang)(qiang)(qiang)及后墻(qiang)(qiang)(qiang)可以(yi)砌(qi)130毫米(mi)(mi)(mi)厚(hou)的(de)耐火(huo)磚(zhuan),砌(qi)磚(zhuan)與(yu)(yu)(yu)爐殼之間的(de)空隙(xi)用石(shi)(shi)英砂填充(chong),熔(rong)(rong)池(chi)(chi)底部(bu)(bu)則可以(yi)砌(qi)200毫米(mi)(mi)(mi)左右(you)的(de)耐火(huo)磚(zhuan)并墊(dian)以(yi)石(shi)(shi)英砂,應(ying)根據(ju)安裝(zhuang)結(jie)晶器位(wei)置(zhi)的(de)高低來調(diao)節,熔(rong)(rong)池(chi)(chi)底部(bu)(bu)可以(yi)適(shi)當砌(qi)厚(hou)些(xie)。
爐底(di)石(shi)部份(fen):用大小(xiao)不(bu)同粒(li)度的石(shi)英砂(sha)筑成,石(shi)英砂(sha)含二氧化(hua)硅(SiO2)不(bu)低于98.5%,應是干燥,潔凈的,另外加入(ru)粘結劑——硼酸3~3.5%。