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(sheng)(sheng)產(chan)(chan)工(gong)藝：　原(yuan)始的石(shi)(shi)(shi)灰(hui)生(sheng)(sheng)產(chan)(chan)工(gong)藝是(shi)將石(shi)(shi)(shi)灰(hui)石(shi)(shi)(shi)與燃(ran)料（木材(cai)）分層鋪(pu)放，引火煅燒一周即(ji)得。現代(dai)則采用機(ji)械化(hua)、半(ban)機(ji)械化(hua)立(li)窯(yao)以及回轉(zhuan)窯(yao)、沸騰爐等(deng)設備進行生(sheng)(sheng)產(chan)(chan)。煅燒時(shi)間也相應地縮短，用回轉(zhuan)窯(yao)生(sheng)(sheng)產(chan)(chan)石(shi)(shi)(shi)灰(hui)僅需(xu)2～4小(xiao)時(shi)，比(bi)用立(li)窯(yao)生(sheng)(sheng)產(chan)(chan)可(ke)提高生(sheng)(sheng)產(chan)(chan)效(xiao)(xiao)率5倍以上。近(jin)年來，又出現了橫(heng)流式、雙(shuang)斜坡式及燒油(you)環行立(li)窯(yao)和(he)帶預熱(re)器的短回轉(zhuan)窯(yao)等(deng)節(jie)能效(xiao)(xiao)果顯著(zhu)的工(gong)藝和(he)設備，燃(ran)料也擴大(da)為煤、焦(jiao)炭、重(zhong)油(you)或液化(hua)氣等(deng)。

生(sheng)(sheng)石(shi)灰(hui)污(wu)水治理(li)(li)已成為關乎經濟(ji)社會和(he)(he)諧發展的(de)一項重(zhong)(zhong)大(da)問題。在控制(zhi)工(gong)(gong)(gong)業(ye)污(wu)染物排(pai)放(fang)量的(de)增(zeng)長方(fang)面，國(guo)家采取(qu)嚴格措施(shi)，生(sheng)(sheng)石(shi)灰(hui)對造(zao)紙、釀造(zao)、化(hua)工(gong)(gong)(gong)、印染行(xing)業(ye)，加(jia)大(da)治理(li)(li)和(he)(he)改造(zao)力度，淘(tao)汰高(gao)耗水、重(zhong)(zhong)污(wu)染的(de)落(luo)后工(gong)(gong)(gong)藝(yi)和(he)(he)設備。我國(guo)工(gong)(gong)(gong)業(ye)化(hua)和(he)(he)城市(shi)化(hua)進程(cheng)不(bu)斷(duan)推進，生(sheng)(sheng)石(shi)灰(hui)工(gong)(gong)(gong)業(ye)廢(fei)水和(he)(he)城市(shi)污(wu)水排(pai)放(fang)量逐年(nian)增(zeng)加(jia)，因(yin)不(bu)達標(biao)排(pai)放(fang)給環(huan)境造(zao)成了(le)巨(ju)大(da)壓(ya)力和(he)(he)危害，生(sheng)(sheng)石(shi)灰(hui)在鋼鐵、電力、化(hua)工(gong)(gong)(gong)、煤(mei)炭等重(zhong)(zhong)點行(xing)業(ye)、推廣(guang)廢(fei)水循環(huan)利(li)用(yong)，提(ti)高(gao)工(gong)(gong)(gong)業(ye)用(yong)水重(zhong)(zhong)復利(li)用(yong)率。同時，生(sheng)(sheng)石(shi)灰(hui)工(gong)(gong)(gong)業(ye)廢(fei)水處(chu)理(li)(li)工(gong)(gong)(gong)藝(yi)、技術(shu)不(bu)斷(duan)提(ti)高(gao)，生(sheng)(sheng)石(shi)灰(hui)給水處(chu)理(li)(li)絮凝劑也(ye)提(ti)出了(le)新的(de)要求。