天(tian)然(ran)石膏(gao)粉生(sheng)產線

天然石膏簡(jian)介

天然二水石(shi)(shi)(shi)膏(gao)(gao)(gao)（CaSO4·2H2O）又(you)稱(cheng)為(wei)生(sheng)石(shi)(shi)(shi)膏(gao)(gao)(gao)，經(jing)過(guo)煅燒(shao)、磨細可得β型半水石(shi)(shi)(shi)膏(gao)(gao)(gao)（CaSO4·?H2O），即(ji)建筑石(shi)(shi)(shi)膏(gao)(gao)(gao)，又(you)稱(cheng) 熟石(shi)(shi)(shi)膏(gao)(gao)(gao) 、 灰泥 。石(shi)(shi)(shi)膏(gao)(gao)(gao)礦(kuang)以(yi)(yi)沉(chen)(chen)積型礦(kuang)床為(wei)主(zhu)，儲量占全國(guo)90%以(yi)(yi)上，后生(sheng)型及熱(re)液交(jiao)代(dai)型石(shi)(shi)(shi)膏(gao)(gao)(gao)礦(kuang)不很重要。石(shi)(shi)(shi)膏(gao)(gao)(gao)礦(kuang)在各地質時(shi)代(dai)均有產出，以(yi)(yi)早白堊紀和第(di)三紀沉(chen)(chen)積型石(shi)(shi)(shi)膏(gao)(gao)(gao)礦(kuang)為(wei)最重要。

天然石(shi)膏(gao)(gao)(gao)中(zhong)(zhong)用(yong)(yong)(yong)途(tu)最廣(guang)的(de)是二水石(shi)膏(gao)(gao)(gao)，其有效(xiao)成(cheng)分(fen)為二水硫(liu)酸(suan)鈣(gai)(gai)，一般根(gen)據(ju)礦石(shi)中(zhong)(zhong)二水硫(liu)酸(suan)鈣(gai)(gai)含量(liang)(liang)(liang)對石(shi)膏(gao)(gao)(gao)進行等(deng)級(ji)劃分(fen)。石(shi)膏(gao)(gao)(gao)應用(yong)(yong)(yong)領域(yu)較(jiao)寬，產品種(zhong)類(lei)也較(jiao)多，不同(tong)(tong)的(de)用(yong)(yong)(yong)途(tu)對石(shi)膏(gao)(gao)(gao)原料的(de)質量(liang)(liang)(liang)有著不同(tong)(tong)的(de)要(yao)求，高品位石(shi)膏(gao)(gao)(gao)多被用(yong)(yong)(yong)于(yu)(yu)特種(zhong)石(shi)膏(gao)(gao)(gao)產品的(de)生產原料，如食(shi)用(yong)(yong)(yong)、醫用(yong)(yong)(yong)、藝術品、模型和化工填料等(deng)；二水硫(liu)酸(suan)鈣(gai)(gai)含量(liang)(liang)(liang)低于(yu)(yu)60%的(de)石(shi)膏(gao)(gao)(gao)礦則很少(shao)得到應用(yong)(yong)(yong)；高于(yu)(yu)60%的(de)石(shi)膏(gao)(gao)(gao)礦石(shi)，則根(gen)據(ju)其含量(liang)(liang)(liang)的(de)不同(tong)(tong)，被用(yong)(yong)(yong)于(yu)(yu)建材、建筑等(deng)各個領域(yu)。