保溫劑即覆蓋(gai)(gai)在(zai)(zai)(zai)鋼(gang)(gang)液(ye)面的(de)(de)(de)(de)一(yi)種絕熱(re)(re)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)。有(you)(you)(you)(you)絕熱(re)(re)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)型(xing)(xing)(xing)和(he)發(fa)熱(re)(re)絕熱(re)(re)型(xing)(xing)(xing)兩種。據(ju)專(zhuan)家介紹根(gen)據(ju)使用(yong)場合(he)不(bu)同(tong)，又可分(fen)為(wei)鑄錠保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)、鋼(gang)(gang)包與(yu)(yu)中間罐覆蓋(gai)(gai)劑(ji)；有(you)(you)(you)(you)粉狀(zhuang)、顆粒(li)狀(zhuang)或板狀(zhuang)。鑄錠保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)有(you)(you)(you)(you)時(shi)(shi)稱(cheng)為(wei)防縮(suo)孔(kong)(kong)(kong)劑(ji)，它(ta)的(de)(de)(de)(de)作用(yong)是延緩鋼(gang)(gang)錠糢內(nei)頭(tou)部(bu)(bu)鋼(gang)(gang)液(ye)凝固時(shi)(shi)間，改善鋼(gang)(gang)錠頭(tou)部(bu)(bu)縮(suo)孔(kong)(kong)(kong)形(xing)狀(zhuang)，有(you)(you)(you)(you)利(li)于(yu)減(jian)少冒口體積，提(ti)高鋼(gang)(gang)錠成坯率(lv)。由(you)干延緩鋼(gang)(gang)錠頭(tou)部(bu)(bu)凝固時(shi)(shi)間，推遲了頭(tou)部(bu)(bu)結晶的(de)(de)(de)(de)形(xing)成，特別是使用(yong)發(fa)熱(re)(re)絕熱(re)(re)型(xing)(xing)(xing)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)時(shi)(shi)，有(you)(you)(you)(you)利(li)干減(jian)少鋼(gang)(gang)錠底(di)部(bu)(bu)沉積錐處的(de)(de)(de)(de)偏析，從而(er)提(ti)高鋼(gang)(gang)錠的(de)(de)(de)(de)質量(liang)(liang)(liang)。下(xia)(xia)面河(he)南(nan)耐火(huo)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)廠(chang)為(wei)大家詳解下(xia)(xia)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)配方。絕熱(re)(re)型(xing)(xing)(xing)鑄錠保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)通(tong)常由(you)耐火(huo)骨料(liao)(liao)(liao)(liao)(liao)(liao)，碳(tan)(tan)質材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)和(he)添加一(yi)些多孔(kong)(kong)(kong)型(xing)(xing)(xing)物(wu)質組(zu)成（如(ru)纖維、碳(tan)(tan)化稻殼、膨脹石墨等）要(yao)(yao)求(qiu)在(zai)(zai)(zai)高溫(wen)(wen)(wen)(wen)條件下(xia)(xia)不(bu)燒結，維持粉體，且容重小，氣孔(kong)(kong)(kong)率(lv)高，從而(er)具(ju)有(you)(you)(you)(you)顯熱(re)(re)量(liang)(liang)(liang)小，保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性能(neng)好(hao)的(de)(de)(de)(de)特點(dian)。耐火(huo)骨料(liao)(liao)(liao)(liao)(liao)(liao)除(chu)要(yao)(yao)求(qiu)較高的(de)(de)(de)(de)耐火(huo)度(du)外，粒(li)度(du)大小是至(zhi)關重要(yao)(yao)的(de)(de)(de)(de)，粒(li)度(du)愈(yu)小，保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性能(neng)愈(yu)好(hao)，其保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性能(neng)與(yu)(yu)耐火(huo)骨料(liao)(liao)(liao)(liao)(liao)(liao)本身導(dao)熱(re)(re)系(xi)(xi)數(shu)(shu)幾乎關系(xi)(xi)不(bu)大；碳(tan)(tan)質耐火(huo)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)高溫(wen)(wen)(wen)(wen)下(xia)(xia)導(dao)熱(re)(re)系(xi)(xi)數(shu)(shu)低，有(you)(you)(you)(you)強防輻射能(neng)力（如(ru)片狀(zhuang)石墨〉和(he)阻止耐火(huo)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)燒結傾向，是保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)中不(bu)能(neng)缺少的(de)(de)(de)(de)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)，加入少量(liang)(liang)(liang)多孔(kong)(kong)(kong)型(xing)(xing)(xing)的(de)(de)(de)(de)物(wu)質可以降低容重，提(ti)高氣孔(kong)(kong)(kong)率(lv)，有(you)(you)(you)(you)利(li)于(yu)減(jian)少保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)材(cai)料(liao)(liao)(liao)(liao)(liao)(liao)的(de)(de)(de)(de)吸熱(re)(re)及(ji)提(ti)髙保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性能(neng)。發(fa)生(sheng)反應，放出大量(liang)(liang)(liang)熱(re)(re)量(liang)(liang)(liang)，其升(sheng)高溫(wen)(wen)(wen)(wen)度(du)不(bu)僅取決于(yu)鋁含量(liang)(liang)(liang)的(de)(de)(de)(de)高低，粒(li)度(du)分(fen)布，還與(yu)(yu)反應速度(du)及(ji)反應環境及(ji)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)性能(neng)有(you)(you)(you)(you)關。所以發(fa)熱(re)(re)型(xing)(xing)(xing)的(de)(de)(de)(de)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)必(bi)須包含有(you)(you)(you)(you)良(liang)好(hao)絕熱(re)(re)牲能(neng)的(de)(de)(de)(de)耐火(huo)骨料(liao)(liao)(liao)(liao)(liao)(liao)，除(chu)此之外，在(zai)(zai)(zai)使用(yong)時(shi)(shi)，要(yao)(yao)求(qiu)有(you)(you)(you)(you)良(liang)好(hao)的(de)(de)(de)(de)鋪展性，特別對于(yu)扁錠尤為(wei)重要(yao)(yao)。絕熱(re)(re)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)型(xing)(xing)(xing)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)，在(zai)(zai)(zai)鋼(gang)(gang)錠使用(yong)時(shi)(shi)，有(you)(you)(you)(you)時(shi)(shi)為(wei)了操作方便，把保(bao)(bao)(bao)(bao)(bao)護渣和(he)保(bao)(bao)(bao)(bao)(bao)溫(wen)(wen)(wen)(wen)劑(ji)，合(he)而(er)為(wei)一(yi)使用(yong)。