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)(sheng)產(chan)工(gong)(gong)藝：　原始(shi)的(de)石(shi)灰(hui)(hui)生(sheng)(sheng)(sheng)產(chan)工(gong)(gong)藝是將石(shi)灰(hui)(hui)石(shi)與燃料（木(mu)材）分層鋪(pu)放，引火(huo)煅燒(shao)一(yi)周即得。現代則采用機械化、半機械化立窯(yao)(yao)以及(ji)回轉(zhuan)窯(yao)(yao)、沸騰爐(lu)等設備進行(xing)生(sheng)(sheng)(sheng)產(chan)。煅燒(shao)時間也(ye)相(xiang)應地縮短，用回轉(zhuan)窯(yao)(yao)生(sheng)(sheng)(sheng)產(chan)石(shi)灰(hui)(hui)僅需2～4小時，比用立窯(yao)(yao)生(sheng)(sheng)(sheng)產(chan)可提高生(sheng)(sheng)(sheng)產(chan)效(xiao)率5倍以上。近(jin)年來，又出現了橫流式、雙斜坡式及(ji)燒(shao)油(you)(you)環行(xing)立窯(yao)(yao)和帶預(yu)熱器(qi)的(de)短回轉(zhuan)窯(yao)(yao)等節能效(xiao)果顯著的(de)工(gong)(gong)藝和設備，燃料也(ye)擴大為煤、焦炭、重油(you)(you)或液化氣等。

生(sheng)(sheng)石(shi)灰(hui)(hui)污(wu)水(shui)治理(li)已(yi)成為關乎(hu)經濟社會和諧發展的(de)(de)一項重(zhong)(zhong)大(da)(da)問題。在(zai)控制工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)污(wu)染物排放(fang)量(liang)的(de)(de)增長(chang)方面，國(guo)家采取嚴格(ge)措施(shi)，生(sheng)(sheng)石(shi)灰(hui)(hui)對造紙、釀(niang)造、化工(gong)(gong)(gong)(gong)、印染行(xing)業(ye)(ye)(ye)(ye)，加(jia)大(da)(da)治理(li)和改(gai)造力度，淘汰(tai)高耗水(shui)、重(zhong)(zhong)污(wu)染的(de)(de)落后工(gong)(gong)(gong)(gong)藝(yi)和設備。我國(guo)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)化和城(cheng)市(shi)化進程不(bu)斷推進，生(sheng)(sheng)石(shi)灰(hui)(hui)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)廢(fei)水(shui)和城(cheng)市(shi)污(wu)水(shui)排放(fang)量(liang)逐年增加(jia)，因(yin)不(bu)達標排放(fang)給環境造成了巨大(da)(da)壓力和危害，生(sheng)(sheng)石(shi)灰(hui)(hui)在(zai)鋼鐵、電力、化工(gong)(gong)(gong)(gong)、煤炭等重(zhong)(zhong)點行(xing)業(ye)(ye)(ye)(ye)、推廣(guang)廢(fei)水(shui)循環利用(yong)(yong)，提高工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)用(yong)(yong)水(shui)重(zhong)(zhong)復利用(yong)(yong)率。同時(shi)，生(sheng)(sheng)石(shi)灰(hui)(hui)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)廢(fei)水(shui)處(chu)理(li)工(gong)(gong)(gong)(gong)藝(yi)、技術不(bu)斷提高，生(sheng)(sheng)石(shi)灰(hui)(hui)給水(shui)處(chu)理(li)絮凝劑也(ye)提出了新的(de)(de)要求。