天然石(shi)膏粉生(sheng)產(chan)線

天然石膏簡(jian)介

天然二水石(shi)(shi)膏(gao)(gao)（CaSO4·2H2O）又稱(cheng)為(wei)生(sheng)石(shi)(shi)膏(gao)(gao)，經過煅燒、磨(mo)細可得β型(xing)半(ban)水石(shi)(shi)膏(gao)(gao)（CaSO4·?H2O），即建筑石(shi)(shi)膏(gao)(gao)，又稱(cheng) 熟石(shi)(shi)膏(gao)(gao) 、 灰泥 。石(shi)(shi)膏(gao)(gao)礦(kuang)以(yi)沉積型(xing)礦(kuang)床為(wei)主，儲量占全國90%以(yi)上，后生(sheng)型(xing)及(ji)熱液交(jiao)代(dai)型(xing)石(shi)(shi)膏(gao)(gao)礦(kuang)不很重要。石(shi)(shi)膏(gao)(gao)礦(kuang)在各地質時代(dai)均有產(chan)出，以(yi)早白堊紀和(he)第三紀沉積型(xing)石(shi)(shi)膏(gao)(gao)礦(kuang)為(wei)最重要。

天然石(shi)(shi)(shi)膏(gao)(gao)中用(yong)(yong)(yong)途最(zui)廣的是二水石(shi)(shi)(shi)膏(gao)(gao)，其有效成分(fen)為二水硫(liu)酸(suan)鈣(gai)，一般根據(ju)礦石(shi)(shi)(shi)中二水硫(liu)酸(suan)鈣(gai)含量對石(shi)(shi)(shi)膏(gao)(gao)進行(xing)等(deng)級(ji)劃分(fen)。石(shi)(shi)(shi)膏(gao)(gao)應(ying)用(yong)(yong)(yong)領域較寬，產品(pin)種(zhong)類也較多(duo)，不(bu)同(tong)(tong)的用(yong)(yong)(yong)途對石(shi)(shi)(shi)膏(gao)(gao)原(yuan)料的質量有著(zhu)不(bu)同(tong)(tong)的要求(qiu)，高(gao)品(pin)位石(shi)(shi)(shi)膏(gao)(gao)多(duo)被用(yong)(yong)(yong)于特種(zhong)石(shi)(shi)(shi)膏(gao)(gao)產品(pin)的生產原(yuan)料，如食用(yong)(yong)(yong)、醫用(yong)(yong)(yong)、藝術品(pin)、模型(xing)和(he)化工(gong)填料等(deng)；二水硫(liu)酸(suan)鈣(gai)含量低于60%的石(shi)(shi)(shi)膏(gao)(gao)礦則很少得到(dao)應(ying)用(yong)(yong)(yong)；高(gao)于60%的石(shi)(shi)(shi)膏(gao)(gao)礦石(shi)(shi)(shi)，則根據(ju)其含量的不(bu)同(tong)(tong)，被用(yong)(yong)(yong)于建材、建筑等(deng)各個領域。