碳(tan)酸鈣(gai)是(shi)一(yi)種無機化合物(wu),化學式(shi)為(wei)CaCO?,俗稱灰(hui)(hui)石(shi)(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)石(shi)(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)(shi)粉(fen)、大(da)理石(shi)(shi)(shi)(shi)(shi)等(deng)。碳(tan)酸鈣(gai)呈中(zhong)性,基本(ben)上(shang)不溶于(yu)(yu)水(shui),溶于(yu)(yu)鹽酸。它是(shi)地球上(shang)常見物(wu)質之一(yi),存在于(yu)(yu)霰石(shi)(shi)(shi)(shi)(shi)、方解石(shi)(shi)(shi)(shi)(shi)、白堊、石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)巖、大(da)理石(shi)(shi)(shi)(shi)(shi)、石(shi)(shi)(shi)(shi)(shi)灰(hui)(hui)華等(deng)巖石(shi)(shi)(shi)(shi)(shi)內,亦(yi)為(wei)動物(wu)骨骼或外殼的主要成分(fen)。碳(tan)酸鈣(gai)也(ye)是(shi)重要的建(jian)筑(zhu)材(cai)料,工業上(shang)用途甚廣。
海南碳酸鈣價格由于重(zhong)(zhong)質(zhi)(zhi)(zhi)(zhi)碳(tan)(tan)酸(suan)鈣(gai)的(de)(de)沉(chen)降體積比輕(qing)質(zhi)(zhi)(zhi)(zhi)碳(tan)(tan)酸(suan)鈣(gai)的(de)(de)沉(chen)降體積小,所以稱之(zhi)為重(zhong)(zhong)質(zhi)(zhi)(zhi)(zhi)碳(tan)(tan)酸(suan)鈣(gai)。性質(zhi)(zhi)(zhi)(zhi):白色粉末。無(wu)臭(chou)、無(wu)味。露置空氣中(zhong)無(wu)變化(hua),比重(zhong)(zhong)2.710。熔點(dian)1339℃。幾乎不溶于水(shui)在含有(you)銨鹽或(huo)三氧(yang)化(hua)二(er)鐵的(de)(de)水(shui)中(zhong)溶解,不溶于醇。遇稀醋酸(suan)、稀鹽酸(suan)、稀硝(xiao)酸(suan)發生(sheng)泡沸(fei),并溶解。加(jia)熱分(fen)解為氧(yang)化(hua)鈣(gai)(CaO)和二(er)氧(yang)化(hua)碳(tan)(tan)(CO?)。采用(yong)不同粉碎加(jia)工設備,可生(sheng)產出:400目(mu)(mu)、500目(mu)(mu)、600目(mu)(mu)、800目(mu)(mu)、1000目(mu)(mu)、1250目(mu)(mu)、2500目(mu)(mu)、5000目(mu)(mu)各(ge)種(zhong)粒徑(jing)的(de)(de)重(zhong)(zhong)質(zhi)(zhi)(zhi)(zhi)碳(tan)(tan)酸(suan)鈣(gai),又因造紙(zhi)、涂料、顏料的(de)(de)特種(zhong)需(xu)要還可以研磨生(sheng)成2μm以下重(zhong)(zhong)質(zhi)(zhi)(zhi)(zhi)鈣(gai)。