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)工(gong)藝：　原始的石灰(hui)生(sheng)(sheng)產(chan)工(gong)藝是將石灰(hui)石與燃(ran)料(liao)（木材）分(fen)層鋪放，引(yin)火煅(duan)燒(shao)(shao)一(yi)周即(ji)得(de)。現(xian)(xian)代則采用機械(xie)化、半機械(xie)化立窯(yao)以(yi)及回(hui)轉(zhuan)窯(yao)、沸騰爐等設(she)備進行(xing)(xing)生(sheng)(sheng)產(chan)。煅(duan)燒(shao)(shao)時間也相應(ying)地(di)縮短，用回(hui)轉(zhuan)窯(yao)生(sheng)(sheng)產(chan)石灰(hui)僅需2～4小時，比用立窯(yao)生(sheng)(sheng)產(chan)可提高生(sheng)(sheng)產(chan)效(xiao)(xiao)率5倍以(yi)上。近年來，又出(chu)現(xian)(xian)了橫流式、雙斜坡式及燒(shao)(shao)油(you)環行(xing)(xing)立窯(yao)和(he)帶預(yu)熱器的短回(hui)轉(zhuan)窯(yao)等節(jie)能(neng)效(xiao)(xiao)果顯(xian)著的工(gong)藝和(he)設(she)備，燃(ran)料(liao)也擴(kuo)大為(wei)煤(mei)、焦炭、重油(you)或(huo)液(ye)化氣等。

生石(shi)(shi)(shi)灰(hui)污水(shui)治理(li)已成為(wei)關乎經濟社會(hui)和諧(xie)發展(zhan)的一項(xiang)重(zhong)大問題(ti)。在(zai)控制工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)污染物排放量的增長方面(mian)，國家(jia)采(cai)取嚴格措施(shi)，生石(shi)(shi)(shi)灰(hui)對造(zao)(zao)紙、釀(niang)造(zao)(zao)、化(hua)工(gong)(gong)(gong)、印染行業(ye)(ye)(ye)(ye)，加(jia)大治理(li)和改(gai)造(zao)(zao)力(li)(li)(li)度，淘汰高(gao)耗水(shui)、重(zhong)污染的落(luo)后工(gong)(gong)(gong)藝和設備。我國工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)化(hua)和城(cheng)市(shi)化(hua)進程不斷推進，生石(shi)(shi)(shi)灰(hui)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)廢(fei)水(shui)和城(cheng)市(shi)污水(shui)排放量逐(zhu)年增加(jia)，因不達標(biao)排放給環境造(zao)(zao)成了(le)巨大壓力(li)(li)(li)和危(wei)害(hai)，生石(shi)(shi)(shi)灰(hui)在(zai)鋼鐵、電力(li)(li)(li)、化(hua)工(gong)(gong)(gong)、煤炭等重(zhong)點行業(ye)(ye)(ye)(ye)、推廣廢(fei)水(shui)循(xun)環利用(yong)，提(ti)高(gao)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)用(yong)水(shui)重(zhong)復利用(yong)率。同時(shi)，生石(shi)(shi)(shi)灰(hui)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)廢(fei)水(shui)處理(li)工(gong)(gong)(gong)藝、技術不斷提(ti)高(gao)，生石(shi)(shi)(shi)灰(hui)給水(shui)處理(li)絮凝劑(ji)也提(ti)出了(le)新的要(yao)求。