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)產工(gong)藝(yi)：　原(yuan)始的石(shi)灰生(sheng)(sheng)產工(gong)藝(yi)是將石(shi)灰石(shi)與燃料（木材）分層鋪放，引(yin)火煅燒(shao)一周即(ji)得。現代則采用機(ji)械(xie)化、半機(ji)械(xie)化立窯(yao)以及回(hui)(hui)轉(zhuan)窯(yao)、沸騰爐等(deng)設備(bei)進行(xing)生(sheng)(sheng)產。煅燒(shao)時間也相應地(di)縮短，用回(hui)(hui)轉(zhuan)窯(yao)生(sheng)(sheng)產石(shi)灰僅需2～4小時，比用立窯(yao)生(sheng)(sheng)產可提高生(sheng)(sheng)產效(xiao)(xiao)率5倍以上。近年來，又出(chu)現了橫流式、雙斜坡式及燒(shao)油(you)環行(xing)立窯(yao)和(he)帶(dai)預熱(re)器的短回(hui)(hui)轉(zhuan)窯(yao)等(deng)節能(neng)效(xiao)(xiao)果顯著的工(gong)藝(yi)和(he)設備(bei)，燃料也擴(kuo)大為(wei)煤、焦炭(tan)、重油(you)或(huo)液化氣等(deng)。

生(sheng)(sheng)石(shi)灰(hui)(hui)污水(shui)(shui)治(zhi)理已成為關乎(hu)經濟(ji)社會(hui)和(he)(he)諧(xie)發(fa)展的一項重(zhong)大問題。在控制(zhi)工(gong)(gong)業(ye)污染物排(pai)(pai)放量的增長方(fang)面，國家采取嚴格措施，生(sheng)(sheng)石(shi)灰(hui)(hui)對(dui)造(zao)紙、釀造(zao)、化(hua)工(gong)(gong)、印(yin)染行業(ye)，加大治(zhi)理和(he)(he)改(gai)造(zao)力度，淘汰高耗(hao)水(shui)(shui)、重(zhong)污染的落后工(gong)(gong)藝和(he)(he)設備。我國工(gong)(gong)業(ye)化(hua)和(he)(he)城(cheng)市(shi)化(hua)進(jin)程不(bu)斷推進(jin)，生(sheng)(sheng)石(shi)灰(hui)(hui)工(gong)(gong)業(ye)廢(fei)水(shui)(shui)和(he)(he)城(cheng)市(shi)污水(shui)(shui)排(pai)(pai)放量逐(zhu)年(nian)增加，因不(bu)達標排(pai)(pai)放給環境造(zao)成了(le)巨大壓力和(he)(he)危害，生(sheng)(sheng)石(shi)灰(hui)(hui)在鋼鐵、電力、化(hua)工(gong)(gong)、煤炭等重(zhong)點(dian)行業(ye)、推廣廢(fei)水(shui)(shui)循環利用，提高工(gong)(gong)業(ye)用水(shui)(shui)重(zhong)復利用率。同(tong)時(shi)，生(sheng)(sheng)石(shi)灰(hui)(hui)工(gong)(gong)業(ye)廢(fei)水(shui)(shui)處(chu)理工(gong)(gong)藝、技(ji)術不(bu)斷提高，生(sheng)(sheng)石(shi)灰(hui)(hui)給水(shui)(shui)處(chu)理絮凝劑也提出了(le)新(xin)的要(yao)求。