凡是以碳酸鈣(gai)為(wei)主要成(cheng)分(fen)的(de)(de)天然巖石(shi)(shi)(shi)(shi)(shi)，武漢石(shi)(shi)(shi)(shi)(shi)膏(gao)緩(huan)凝(ning)劑，如石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)巖、白(bai)堊、白(bai)云質石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)巖等，都可(ke)用(yong)來生(sheng)產石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)。將主要成(cheng)分(fen)為(wei)碳酸鈣(gai)的(de)(de)天然巖石(shi)(shi)(shi)(shi)(shi)，在適當溫(wen)度下煅燒，排(pai)除分(fen)解出的(de)(de)二氧化碳后，所得的(de)(de)以氧化鈣(gai)(CaO)為(wei)主要成(cheng)分(fen)的(de)(de)產品(pin)即為(wei)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)，又稱生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)。生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)呈(cheng)白(bai)色或(huo)灰(hui)(hui)(hui)色塊(kuai)狀(zhuang)(zhuang)，為(wei)便于使用(yong)，塊(kuai)狀(zhuang)(zhuang)生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)常需加工成(cheng)生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)粉、消(xiao)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)粉或(huo)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)膏(gao)。生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)粉是由塊(kuai)狀(zhuang)(zhuang)生(sheng)石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)磨(mo)細(xi)而得到(dao)的(de)(de)細(xi)粉，其主要成(cheng)分(fen)是CaO；

在(zai)實際生產中(zhong)，為加快分(fen)解，煅燒(shao)溫度(du)(du)常(chang)提高到(dao)1000～1100℃。由(you)于石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)石(shi)(shi)(shi)(shi)(shi)(shi)(shi)原料的尺寸大或(huo)煅燒(shao)時窯中(zhong)溫度(du)(du)分(fen)布不勻(yun)等原因，石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)中(zhong)常(chang)含有(you)欠(qian)火石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)和過火石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)。欠(qian)火石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)中(zhong)的碳(tan)酸(suan)鈣未完全分(fen)解，脫硫石(shi)(shi)(shi)(shi)(shi)(shi)(shi)膏緩(huan)(huan)凝劑(ji)哪里有(you)，使用(yong)時缺(que)乏(fa)粘結力。過火石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)結構密實，表(biao)面常(chang)包(bao)覆一層(ceng)熔融物，熟化(hua)很(hen)慢。由(you)于生產原料中(zhong)常(chang)含有(you)碳(tan)酸(suan)鎂(mei)(mei)(MgCO3)，因此生石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)中(zhong)還含有(you)次要成(cheng)分(fen)氧化(hua)鎂(mei)(mei)(MgO)，根(gen)據(ju)氧化(hua)鎂(mei)(mei)含量的多少(shao)(shao)，輕質石(shi)(shi)(shi)(shi)(shi)(shi)(shi)膏緩(huan)(huan)凝劑(ji)多少(shao)(shao)錢，生石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)分(fen)為鈣質石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)(MgO≤5%)和鎂(mei)(mei)質石(shi)(shi)(shi)(shi)(shi)(shi)(shi)灰(hui)(MgO>5%)。

抹(mo)灰厚(hou)度(du)(du)在(zai)5mm以上(shang)的須用底層(ceng)粉刷(shua)石膏砂漿打底。首先貼(tie)餅(bing)、充筋，將墻(qiang)(qiang)面找(zhao)方找(zhao)正。待餅(bing)、筋凝固后，再進行正式抹(mo)灰。后用刮杠(gang)緊(jin)貼(tie)標筋上(shang)下左右刮平(ping)、壓實，使墻(qiang)(qiang)面平(ping)整、垂直(zhi)（平(ping)整度(du)(du)小(xiao)于、垂直(zhi)度(du)(du)小(xiao)于）。陰陽角方正。

河北申輝石膏緩凝劑(ji)有限公司位于國(guo)家(jia)歷史文化名城(cheng)，戰國(guo)時期(qi)趙國(guo)國(guo)都――邯鄲，公司成立于2008年(nian)，注(zhu)冊資金500萬(wan)，廠區(qu)總占(zhan)地13000平方(fang)米(mi)，廠房6000平方(fang)米(mi)，是國(guo)內一家(jia)生產(chan)石膏緩凝劑(ji)的公司。