防止產(chan)生過火石灰和欠火石灰.電熔(rong)鎂(mei)鈣(gai)砂

將主(zhu)要成(cheng)分(fen)(fen)為(wei)碳(tan)酸鈣(gai)的白(bai)云石(shi),在適當溫(wen)度下煅燒(shao),排除(chu)分(fen)(fen)解(jie)出的二氧化碳(tan)后,所得的以氧化鈣(gai)(CaO)為(wei)主(zhu)要成(cheng)分(fen)(fen)的產品即為(wei)石(shi)灰(hui),又(you)稱生石(shi)灰(hui).在實(shi)際(ji)生產中(zhong),為(wei)加快(kuai)分(fen)(fen)解(jie),煅燒(shao)溫(wen)度常提高(gao)到1000～1100℃.由(you)于石(shi)灰(hui)石(shi)原(yuan)料(liao)的尺寸大(da)或(huo)煅燒(shao)時窯(yao)中(zhong)溫(wen)度分(fen)(fen)布(bu)不勻等原(yuan)因,石(shi)灰(hui)中(zhong)常含有(you)欠火(huo)石(shi)灰(hui)和過火(huo)石(shi)灰(hui).合成(cheng)燒(shao)結鎂(mei)鈣(gai)砂 

欠(qian)火石灰中的碳酸鈣未完全分解,使用(yong)時缺乏(fa)粘結力.

防止產生過火石灰和欠(qian)火石灰.電熔鎂鈣砂

將主(zhu)要成分為碳酸鈣的(de)(de)(de)白(bai)云(yun)石(shi)(shi)(shi),在適(shi)當溫(wen)度(du)(du)下(xia)煅(duan)燒(shao),排除分解出的(de)(de)(de)二氧化(hua)碳后,所(suo)得(de)的(de)(de)(de)以(yi)氧化(hua)鈣(CaO)為主(zhu)要成分的(de)(de)(de)產(chan)品(pin)即為石(shi)(shi)(shi)灰(hui)(hui),鎂鋁(lv)尖晶(jing)石(shi)(shi)(shi)又(you)稱生(sheng)石(shi)(shi)(shi)灰(hui)(hui).在實(shi)際生(sheng)產(chan)中(zhong),為加快分解,煅(duan)燒(shao)溫(wen)度(du)(du)常(chang)提高到(dao)1000～1100℃.由于(yu)石(shi)(shi)(shi)灰(hui)(hui)石(shi)(shi)(shi)原料的(de)(de)(de)尺寸大或煅(duan)燒(shao)時窯中(zhong)溫(wen)度(du)(du)分布不勻等原因,石(shi)(shi)(shi)灰(hui)(hui)中(zhong)常(chang)含有欠火石(shi)(shi)(shi)灰(hui)(hui)和(he)過火石(shi)(shi)(shi)灰(hui)(hui).

欠火石灰中的(de)碳(tan)酸鈣未完全分解,使用(yong)時缺乏粘結力.