海南生石灰粉主要成分為氧化鈣，通常制法為將主要成分為碳酸鈣的天然巖石，在高溫下煅燒，即可分解生成二氧化碳以及氧化鈣（化學式：CaO，即生石灰，又稱云石）。凡是以碳酸鈣為主要成分的天然巖石，如石灰巖、白堊、白云質石灰巖等，都可用來生產石灰。在沿海地區有用貝殼作原料，經燒制成殼灰，作生石灰用。

生產工(gong)藝(yi)：　原始的(de)石(shi)(shi)灰(hui)生產工(gong)藝(yi)是將石(shi)(shi)灰(hui)石(shi)(shi)與燃(ran)料（木(mu)材(cai)）分層鋪(pu)放，引火(huo)煅(duan)燒一周即(ji)得。現代則(ze)采用(yong)(yong)機械化、半機械化立窯(yao)(yao)以(yi)及回轉(zhuan)窯(yao)(yao)、沸(fei)騰爐等(deng)設(she)備進行生產。煅(duan)燒時間也相應地縮短，用(yong)(yong)回轉(zhuan)窯(yao)(yao)生產石(shi)(shi)灰(hui)僅(jin)需2～4小時，比(bi)用(yong)(yong)立窯(yao)(yao)生產可提高(gao)生產效率5倍(bei)以(yi)上。近年(nian)來，又(you)出(chu)現了橫流式、雙斜(xie)坡式及燒油(you)(you)環(huan)行立窯(yao)(yao)和帶預熱器的(de)短回轉(zhuan)窯(yao)(yao)等(deng)節(jie)能效果顯著(zhu)的(de)工(gong)藝(yi)和設(she)備，燃(ran)料也擴大為煤、焦炭、重油(you)(you)或液化氣等(deng)。

生(sheng)(sheng)石(shi)(shi)(shi)灰污(wu)水(shui)(shui)(shui)治(zhi)理(li)已成為關乎經濟社會(hui)和(he)(he)諧(xie)發展(zhan)的一項重大(da)問題。在控制(zhi)工(gong)(gong)(gong)業(ye)(ye)污(wu)染(ran)物排(pai)(pai)放(fang)量的增長方面，國(guo)(guo)家采取嚴格措施，生(sheng)(sheng)石(shi)(shi)(shi)灰對造紙(zhi)、釀造、化(hua)(hua)工(gong)(gong)(gong)、印(yin)染(ran)行業(ye)(ye)，加大(da)治(zhi)理(li)和(he)(he)改(gai)造力(li)度，淘汰高(gao)耗水(shui)(shui)(shui)、重污(wu)染(ran)的落后工(gong)(gong)(gong)藝和(he)(he)設備。我國(guo)(guo)工(gong)(gong)(gong)業(ye)(ye)化(hua)(hua)和(he)(he)城(cheng)市化(hua)(hua)進(jin)程不斷推(tui)進(jin)，生(sheng)(sheng)石(shi)(shi)(shi)灰工(gong)(gong)(gong)業(ye)(ye)廢水(shui)(shui)(shui)和(he)(he)城(cheng)市污(wu)水(shui)(shui)(shui)排(pai)(pai)放(fang)量逐年增加，因(yin)不達標排(pai)(pai)放(fang)給環(huan)境造成了(le)巨大(da)壓力(li)和(he)(he)危害，生(sheng)(sheng)石(shi)(shi)(shi)灰在鋼鐵、電力(li)、化(hua)(hua)工(gong)(gong)(gong)、煤炭等重點行業(ye)(ye)、推(tui)廣廢水(shui)(shui)(shui)循環(huan)利用(yong)(yong)，提高(gao)工(gong)(gong)(gong)業(ye)(ye)用(yong)(yong)水(shui)(shui)(shui)重復利用(yong)(yong)率(lv)。同時，生(sheng)(sheng)石(shi)(shi)(shi)灰工(gong)(gong)(gong)業(ye)(ye)廢水(shui)(shui)(shui)處理(li)工(gong)(gong)(gong)藝、技術(shu)不斷提高(gao)，生(sheng)(sheng)石(shi)(shi)(shi)灰給水(shui)(shui)(shui)處理(li)絮凝劑也提出了(le)新的要求。