生(sheng)產石(shi)(shi)(shi)(shi)(shi)膏(gao)的(de)(de)原料主(zhu)要(yao)為含硫(liu)酸鈣的(de)(de)天(tian)(tian)然(ran)(ran)石(shi)(shi)(shi)(shi)(shi)膏(gao)（又稱生(sheng)石(shi)(shi)(shi)(shi)(shi)膏(gao)）或(huo)含硫(liu)酸鈣的(de)(de)化工(gong)副產品和磷石(shi)(shi)(shi)(shi)(shi)膏(gao)、氟石(shi)(shi)(shi)(shi)(shi)膏(gao)、硼石(shi)(shi)(shi)(shi)(shi)膏(gao)等廢渣，其化學式(shi)為CaSO4.1/2H2O，也稱半水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)。將天(tian)(tian)然(ran)(ran)二(er)水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)在不同的(de)(de)溫度下煅(duan)燒可得到不同的(de)(de)石(shi)(shi)(shi)(shi)(shi)膏(gao)品種(zhong)。如將天(tian)(tian)然(ran)(ran)二(er)水(shui)石(shi)(shi)(shi)(shi)(shi)膏(gao)在107~170℃的(de)(de)干燥條件下加熱(re)可得建筑石(shi)(shi)(shi)(shi)(shi)膏(gao)。

將建筑石膏加水(shui)(shui)后，它首先(xian)溶(rong)解于水(shui)(shui)，然(ran)后生(sheng)(sheng)(sheng)成二水(shui)(shui)石膏析出。隨著(zhu)水(shui)(shui)化的(de)(de)(de)(de)不(bu)斷進行，生(sheng)(sheng)(sheng)成的(de)(de)(de)(de)二水(shui)(shui)石膏膠體(ti)(ti)微(wei)粒(li)不(bu)斷增(zeng)多，這些微(wei)粒(li)比原先(xian)更加細(xi)小，比表面積很大，吸(xi)附著(zhu)很多的(de)(de)(de)(de)水(shui)(shui)分；同時(shi)漿(jiang)(jiang)(jiang)體(ti)(ti)中(zhong)的(de)(de)(de)(de)自由水(shui)(shui)分由于水(shui)(shui)化和(he)蒸發而不(bu)斷減少，漿(jiang)(jiang)(jiang)體(ti)(ti)的(de)(de)(de)(de)稠(chou)度(du)(du)不(bu)斷增(zeng)加，膠體(ti)(ti)微(wei)粒(li)間(jian)的(de)(de)(de)(de)黏(nian)結逐步增(zeng)強(qiang)(qiang)，顆粒(li)間(jian)產生(sheng)(sheng)(sheng)摩擦力和(he)黏(nian)結力，使漿(jiang)(jiang)(jiang)體(ti)(ti)逐漸(jian)(jian)失(shi)去可塑(su)性，即漿(jiang)(jiang)(jiang)體(ti)(ti)逐漸(jian)(jian)產生(sheng)(sheng)(sheng)凝(ning)結。繼續水(shui)(shui)化，膠體(ti)(ti)轉變成晶體(ti)(ti)。晶體(ti)(ti)顆粒(li)逐漸(jian)(jian)長大，使漿(jiang)(jiang)(jiang)體(ti)(ti)完全失(shi)去可塑(su)性，產生(sheng)(sheng)(sheng)強(qiang)(qiang)度(du)(du)，即漿(jiang)(jiang)(jiang)體(ti)(ti)產生(sheng)(sheng)(sheng)了硬(ying)化。這一過(guo)程不(bu)斷進行，直至漿(jiang)(jiang)(jiang)體(ti)(ti)完全干燥(zao)，強(qiang)(qiang)度(du)(du)不(bu)在(zai)增(zeng)加，此時(shi)漿(jiang)(jiang)(jiang)體(ti)(ti)已硬(ying)化成人造石材。

海南石膏粉批發是(shi)以建筑石(shi)膏(gao)為(wei)主要(yao)原材(cai)料，經加水攪拌、澆注成型(xing)(xing)和干燥(zao)制成的輕(qing)(qing)質建筑石(shi)膏(gao)制品。生產中允(yun)許加入纖維增強材(cai)料或輕(qing)(qing)集料，也可加入發泡劑。石(shi)膏(gao)砌塊具有隔聲防火、施工(gong)便(bian)捷(jie)等多項(xiang)優點，是(shi)一種低(di)碳環保、健康、符(fu)合時代發展要(yao)求的新型(xing)(xing)墻體材(cai)料。