91自拍視頻:虹口重燒鎂砂是指菱鎂礦在1800℃煅燒時，二氧化碳完全逸出，氧化鎂形成方鎂石致密塊體，9791自拍視頻:虹口電熔鎂砂稱重(zhong)(zhong)燒(shao)鎂（又稱燒(shao)結鎂砂(sha)），這種重(zhong)(zhong)燒(shao)鎂具有很高(gao)的耐火度。其主要成(cheng)(cheng)分為氧(yang)化(hua)鎂，選用天然(ran)特級菱鎂礦石經浮選提(ti)純、輕燒(shao)、細(xi)磨、高(gao)壓(ya)壓(ya)球、超高(gao)溫油豎窯(yao)煅燒(shao)而成(cheng)(cheng)。 

氧(yang)化(hua)(hua)鎂是(shi)堿(jian)(jian)性(xing)氧(yang)化(hua)(hua)物,具有堿(jian)(jian)性(xing)氧(yang)化(hua)(hua)物的通性(xing)，屬(shu)(shu)于膠凝(ning)材(cai)料(liao)。白色粉末(mo)（淡黃色為氮化(hua)(hua)鎂），無(wu)臭(chou)、無(wu)味、無(wu)毒，是(shi)典(dian)型的堿(jian)(jian)土金(jin)屬(shu)(shu)氧(yang)化(hua)(hua)物

重(zhong)(zhong)燒(shao)(shao)(shao)鎂(mei)砂是指菱鎂(mei)礦在(zai)1800℃煅燒(shao)(shao)(shao)時，二氧(yang)化碳完全逸出，氧(yang)化鎂(mei)形(xing)成方鎂(mei)石(shi)致(zhi)密(mi)塊體，稱(cheng)重(zhong)(zhong)燒(shao)(shao)(shao)鎂(mei)（又稱(cheng)燒(shao)(shao)(shao)結鎂(mei)砂），這種重(zhong)(zhong)燒(shao)(shao)(shao)鎂(mei)具(ju)有很高的耐火度。其主(zhu)要成分為氧(yang)化鎂(mei)，選(xuan)(xuan)用天然特級菱鎂(mei)礦石(shi)經(jing)浮選(xuan)(xuan)提純(chun)、輕燒(shao)(shao)(shao)、細磨、高壓壓球、超(chao)高溫油豎(shu)窯煅燒(shao)(shao)(shao)而成。 

氧(yang)化(hua)鎂(mei)是(shi)堿(jian)性(xing)氧(yang)化(hua)物,具有堿(jian)性(xing)氧(yang)化(hua)物的通性(xing)，屬(shu)于膠凝材料。白色粉末（淡黃色為氮(dan)化(hua)鎂(mei)），無(wu)臭、無(wu)味(wei)、無(wu)毒，是(shi)典(dian)型的堿(jian)土金屬(shu)氧(yang)化(hua)物