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)產(chan)工藝(yi)：　原始的(de)石(shi)(shi)(shi)灰(hui)(hui)生(sheng)產(chan)工藝(yi)是將(jiang)石(shi)(shi)(shi)灰(hui)(hui)石(shi)(shi)(shi)與燃料（木材）分層鋪放(fang)，引(yin)火煅(duan)燒(shao)一周即得。現(xian)代則采用機械化、半機械化立窯(yao)以及(ji)回(hui)轉(zhuan)窯(yao)、沸(fei)騰爐等(deng)設備進行生(sheng)產(chan)。煅(duan)燒(shao)時間也(ye)相應地(di)縮短，用回(hui)轉(zhuan)窯(yao)生(sheng)產(chan)石(shi)(shi)(shi)灰(hui)(hui)僅需2～4小時，比用立窯(yao)生(sheng)產(chan)可提高生(sheng)產(chan)效率(lv)5倍以上。近年來，又出(chu)現(xian)了橫(heng)流式、雙斜坡式及(ji)燒(shao)油(you)(you)環(huan)行立窯(yao)和(he)帶預熱器(qi)的(de)短回(hui)轉(zhuan)窯(yao)等(deng)節能效果(guo)顯著的(de)工藝(yi)和(he)設備，燃料也(ye)擴大為煤、焦炭、重油(you)(you)或液化氣等(deng)。

生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)污(wu)水(shui)(shui)治理已成(cheng)為關乎經濟社(she)會和(he)(he)諧發展的(de)一項(xiang)重(zhong)大問題。在控制工(gong)(gong)業(ye)(ye)污(wu)染(ran)物(wu)排放量(liang)的(de)增長方面，國(guo)家采取嚴格措施，生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)對造(zao)紙、釀(niang)造(zao)、化(hua)(hua)(hua)工(gong)(gong)、印染(ran)行(xing)業(ye)(ye)，加(jia)大治理和(he)(he)改造(zao)力(li)度，淘汰高耗水(shui)(shui)、重(zhong)污(wu)染(ran)的(de)落后工(gong)(gong)藝和(he)(he)設(she)備(bei)。我國(guo)工(gong)(gong)業(ye)(ye)化(hua)(hua)(hua)和(he)(he)城市化(hua)(hua)(hua)進程不(bu)斷推(tui)進，生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)工(gong)(gong)業(ye)(ye)廢(fei)水(shui)(shui)和(he)(he)城市污(wu)水(shui)(shui)排放量(liang)逐年增加(jia)，因不(bu)達(da)標排放給環境(jing)造(zao)成(cheng)了巨大壓力(li)和(he)(he)危害(hai)，生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)在鋼鐵(tie)、電力(li)、化(hua)(hua)(hua)工(gong)(gong)、煤(mei)炭(tan)等重(zhong)點(dian)行(xing)業(ye)(ye)、推(tui)廣(guang)廢(fei)水(shui)(shui)循環利用，提(ti)高工(gong)(gong)業(ye)(ye)用水(shui)(shui)重(zhong)復利用率。同時(shi)，生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)工(gong)(gong)業(ye)(ye)廢(fei)水(shui)(shui)處(chu)理工(gong)(gong)藝、技(ji)術不(bu)斷提(ti)高，生(sheng)(sheng)(sheng)(sheng)石(shi)(shi)灰(hui)(hui)給水(shui)(shui)處(chu)理絮凝劑也提(ti)出(chu)了新的(de)要求。