碳酸(suan)鈣是一種無機化合物(wu),化學式為CaCO?,俗稱灰(hui)(hui)(hui)石(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)石(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)粉、大(da)理石(shi)(shi)(shi)(shi)等。碳酸(suan)鈣呈中性,基本上不(bu)溶于水,溶于鹽酸(suan)。它是地球上常見(jian)物(wu)質(zhi)之一,存在于霰石(shi)(shi)(shi)(shi)、方解石(shi)(shi)(shi)(shi)、白(bai)堊、石(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)巖、大(da)理石(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)灰(hui)(hui)(hui)華等巖石(shi)(shi)(shi)(shi)內(nei),亦為動物(wu)骨(gu)骼或外(wai)殼的主(zhu)要成分。碳酸(suan)鈣也是重要的建筑材(cai)料,工業上用途甚廣(guang)。
海南碳酸鈣價格由于重(zhong)(zhong)質(zhi)碳(tan)酸(suan)鈣(gai)(gai)的(de)沉(chen)降體積比輕(qing)質(zhi)碳(tan)酸(suan)鈣(gai)(gai)的(de)沉(chen)降體積小(xiao),所以稱之為重(zhong)(zhong)質(zhi)碳(tan)酸(suan)鈣(gai)(gai)。性質(zhi):白色粉末。無(wu)臭、無(wu)味(wei)。露置空氣中(zhong)無(wu)變(bian)化(hua),比重(zhong)(zhong)2.710。熔點1339℃。幾乎(hu)不(bu)溶(rong)于水在含(han)有銨鹽或三氧化(hua)二鐵的(de)水中(zhong)溶(rong)解,不(bu)溶(rong)于醇。遇稀(xi)醋(cu)酸(suan)、稀(xi)鹽酸(suan)、稀(xi)硝酸(suan)發生泡沸,并溶(rong)解。加(jia)熱分解為氧化(hua)鈣(gai)(gai)(CaO)和二氧化(hua)碳(tan)(CO?)。采用不(bu)同粉碎加(jia)工設備(bei),可生產出:400目(mu)(mu)(mu)、500目(mu)(mu)(mu)、600目(mu)(mu)(mu)、800目(mu)(mu)(mu)、1000目(mu)(mu)(mu)、1250目(mu)(mu)(mu)、2500目(mu)(mu)(mu)、5000目(mu)(mu)(mu)各種(zhong)粒徑的(de)重(zhong)(zhong)質(zhi)碳(tan)酸(suan)鈣(gai)(gai),又因造紙、涂(tu)料(liao)、顏(yan)料(liao)的(de)特種(zhong)需要還可以研磨生成2μm以下重(zhong)(zhong)質(zhi)鈣(gai)(gai)。