保溫劑即覆(fu)蓋(gai)在(zai)鋼液面(mian)的(de)(de)(de)(de)一種(zhong)絕(jue)(jue)熱(re)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)。有(you)(you)絕(jue)(jue)熱(re)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)型和發熱(re)絕(jue)(jue)熱(re)型兩種(zhong)。據專家介紹根(gen)據使(shi)用(yong)場合(he)不(bu)(bu)同，又可分(fen)為鑄錠保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)、鋼包與(yu)中(zhong)(zhong)間罐(guan)覆(fu)蓋(gai)劑(ji)(ji)(ji)(ji)；有(you)(you)粉狀(zhuang)、顆粒(li)狀(zhuang)或(huo)板狀(zhuang)。鑄錠保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)有(you)(you)時(shi)(shi)稱為防縮孔(kong)劑(ji)(ji)(ji)(ji)，它的(de)(de)(de)(de)作(zuo)用(yong)是延緩(huan)鋼錠糢內頭(tou)部(bu)鋼液凝(ning)固時(shi)(shi)間，改善(shan)鋼錠頭(tou)部(bu)縮孔(kong)形(xing)狀(zhuang)，有(you)(you)利于(yu)減(jian)(jian)少(shao)(shao)冒(mao)口體(ti)積，提高(gao)(gao)(gao)鋼錠成(cheng)坯率。由干(gan)延緩(huan)鋼錠頭(tou)部(bu)凝(ning)固時(shi)(shi)間，推(tui)遲了頭(tou)部(bu)結晶的(de)(de)(de)(de)形(xing)成(cheng)，特(te)(te)(te)別是使(shi)用(yong)發熱(re)絕(jue)(jue)熱(re)型保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)時(shi)(shi)，有(you)(you)利干(gan)減(jian)(jian)少(shao)(shao)鋼錠底部(bu)沉積錐處的(de)(de)(de)(de)偏析，從而提高(gao)(gao)(gao)鋼錠的(de)(de)(de)(de)質(zhi)量。下面(mian)河南耐(nai)火材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)廠為大(da)(da)家詳解(jie)下保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)配方。絕(jue)(jue)熱(re)型鑄錠保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)通常由耐(nai)火骨(gu)料(liao)(liao)(liao)，碳質(zhi)材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)和添(tian)加(jia)一些多孔(kong)型物質(zhi)組(zu)成(cheng)（如(ru)纖(xian)維、碳化(hua)稻殼(ke)、膨(peng)脹石墨等）要(yao)(yao)求(qiu)在(zai)高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)條(tiao)件下不(bu)(bu)燒(shao)結，維持(chi)粉體(ti)，且容(rong)重(zhong)小(xiao)(xiao)，氣孔(kong)率高(gao)(gao)(gao)，從而具(ju)有(you)(you)顯熱(re)量小(xiao)(xiao)，保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)性(xing)(xing)能(neng)(neng)好的(de)(de)(de)(de)特(te)(te)(te)點。耐(nai)火骨(gu)料(liao)(liao)(liao)除要(yao)(yao)求(qiu)較高(gao)(gao)(gao)的(de)(de)(de)(de)耐(nai)火度外，粒(li)度大(da)(da)小(xiao)(xiao)是至關(guan)重(zhong)要(yao)(yao)的(de)(de)(de)(de)，粒(li)度愈小(xiao)(xiao)，保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)性(xing)(xing)能(neng)(neng)愈好，其保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)性(xing)(xing)能(neng)(neng)與(yu)耐(nai)火骨(gu)料(liao)(liao)(liao)本身導熱(re)系數幾乎(hu)關(guan)系不(bu)(bu)大(da)(da)；碳質(zhi)耐(nai)火材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)下導熱(re)系數低(di)，有(you)(you)強防輻射能(neng)(neng)力（如(ru)片狀(zhuang)石墨〉和阻止耐(nai)火材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)燒(shao)結傾向(xiang)，是保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)中(zhong)(zhong)不(bu)(bu)能(neng)(neng)缺少(shao)(shao)的(de)(de)(de)(de)材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)，加(jia)入少(shao)(shao)量多孔(kong)型的(de)(de)(de)(de)物質(zhi)可以(yi)降低(di)容(rong)重(zhong)，提高(gao)(gao)(gao)氣孔(kong)率，有(you)(you)利于(yu)減(jian)(jian)少(shao)(shao)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)材(cai)(cai)(cai)(cai)料(liao)(liao)(liao)的(de)(de)(de)(de)吸熱(re)及(ji)(ji)提髙保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)性(xing)(xing)能(neng)(neng)。發生(sheng)反應(ying)，放出(chu)大(da)(da)量熱(re)量，其升(sheng)高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)度不(bu)(bu)僅取決于(yu)鋁含(han)(han)量的(de)(de)(de)(de)高(gao)(gao)(gao)低(di)，粒(li)度分(fen)布，還與(yu)反應(ying)速度及(ji)(ji)反應(ying)環境及(ji)(ji)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)性(xing)(xing)能(neng)(neng)有(you)(you)關(guan)。所以(yi)發熱(re)型的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)必須(xu)包含(han)(han)有(you)(you)良好絕(jue)(jue)熱(re)牲能(neng)(neng)的(de)(de)(de)(de)耐(nai)火骨(gu)料(liao)(liao)(liao)，除此之(zhi)外，在(zai)使(shi)用(yong)時(shi)(shi)，要(yao)(yao)求(qiu)有(you)(you)良好的(de)(de)(de)(de)鋪展性(xing)(xing)，特(te)(te)(te)別對于(yu)扁(bian)錠尤為重(zhong)要(yao)(yao)。絕(jue)(jue)熱(re)保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)型保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)，在(zai)鋼錠使(shi)用(yong)時(shi)(shi)，有(you)(you)時(shi)(shi)為了操作(zuo)方便，把保(bao)(bao)(bao)(bao)護(hu)渣和保(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)(wen)(wen)(wen)(wen)劑(ji)(ji)(ji)(ji)，合(he)而為一使(shi)用(yong)。