在(zai)二十世紀(ji)中期的(de)(de)時候，國(guo)內的(de)(de)絕大(da)多數(shu)耐(nai)(nai)火纖(xian)維(wei)(wei)生(sheng)產(chan)廠(chang)是(shi)以焦寶石(shi)或鋁礬土為原(yuan)料，經(jing)三相或單相電(dian)弧(hu)爐熔(rong)(rong)化(hua)，用壓(ya)縮(suo)空(kong)氣噴吹流股制(zhi)(zhi)(zhi)取(qu)纖(xian)維(wei)(wei)，制(zhi)(zhi)(zhi)品的(de)(de)生(sheng)產(chan)是(shi)將纖(xian)維(wei)(wei)經(jing)水洗除(chu)渣后用壓(ya)制(zhi)(zhi)(zhi)法或真空(kong)吸濾(lv)法來制(zhi)(zhi)(zhi)取(qu)，僅有(you)少(shao)數(shu)廠(chang)家可生(sheng)產(chan)濕(shi)法連續卷毯(tan)。制(zhi)(zhi)(zhi)品品種主(zhu)要有(you)松散纖(xian)維(wei)(wei)、濕(shi)法眷毯(tan)、板、氈、紙、磚、管及異形制(zhi)(zhi)(zhi)品。從耐(nai)(nai)溫等級來看，大(da)多數(shu)企(qi)(qi)業生(sheng)產(chan)的(de)(de)是(shi)耐(nai)(nai)火的(de)(de)溫度為900—1000℃的(de)(de)普通硅(gui)酸鋁纖(xian)維(wei)(wei)及制(zhi)(zhi)(zhi)品，只(zhi)有(you)幾(ji)個較大(da)的(de)(de)企(qi)(qi)業可生(sheng)產(chan)耐(nai)(nai)1200℃左右的(de)(de)高鋁纖(xian)維(wei)(wei)和含鉻(ge)纖(xian)維(wei)(wei)及制(zhi)(zhi)(zhi)品。為提高我國(guo)耐(nai)(nai)火纖(xian)維(wei)(wei)生(sheng)產(chan)的(de)(de)技術水平，鋼(gang)鐵公司(si)耐(nai)(nai)火材料廠(chang)建(jian)成(cheng)(cheng)投(tou)產(chan)公司(si)的(de)(de)生(sheng)產(chan)工藝是(shi)電(dian)阻爐熔(rong)(rong)化(hua)、壓(ya)縮(suo)空(kong)氣平吹成(cheng)(cheng)纖(xian)、連續制(zhi)(zhi)(zhi)取(qu)針刺(ci)毯(tan)。