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。

生產工(gong)藝：　原始的(de)石灰生產工(gong)藝是將石灰石與(yu)燃料(liao)（木材）分(fen)層鋪放，引火煅燒(shao)一(yi)周即得。現代(dai)則采用(yong)(yong)機械(xie)(xie)化、半機械(xie)(xie)化立(li)(li)窯以(yi)及回轉(zhuan)窯、沸騰爐等設(she)備(bei)進(jin)行(xing)生產。煅燒(shao)時間也(ye)相應(ying)地縮短(duan)，用(yong)(yong)回轉(zhuan)窯生產石灰僅(jin)需2～4小(xiao)時，比用(yong)(yong)立(li)(li)窯生產可提高(gao)生產效(xiao)率5倍以(yi)上(shang)。近年來，又出現了橫流式、雙斜坡式及燒(shao)油(you)環行(xing)立(li)(li)窯和帶(dai)預熱器的(de)短(duan)回轉(zhuan)窯等節(jie)能效(xiao)果顯著(zhu)的(de)工(gong)藝和設(she)備(bei)，燃料(liao)也(ye)擴大為煤、焦炭、重(zhong)油(you)或液化氣等。

生(sheng)石(shi)灰(hui)污(wu)水(shui)治理(li)已成(cheng)為(wei)關乎經濟社會和(he)諧(xie)發展(zhan)的一項(xiang)重(zhong)大問題(ti)。在(zai)(zai)控制(zhi)工(gong)(gong)(gong)業(ye)污(wu)染(ran)物排放量的增長方面(mian)，國(guo)(guo)家(jia)采取嚴格措施，生(sheng)石(shi)灰(hui)對(dui)造(zao)(zao)紙、釀(niang)造(zao)(zao)、化(hua)工(gong)(gong)(gong)、印染(ran)行業(ye)，加(jia)大治理(li)和(he)改造(zao)(zao)力(li)度，淘(tao)汰高耗水(shui)、重(zhong)污(wu)染(ran)的落后工(gong)(gong)(gong)藝和(he)設備。我國(guo)(guo)工(gong)(gong)(gong)業(ye)化(hua)和(he)城市化(hua)進程不斷(duan)推(tui)進，生(sheng)石(shi)灰(hui)工(gong)(gong)(gong)業(ye)廢(fei)水(shui)和(he)城市污(wu)水(shui)排放量逐年增加(jia)，因不達標排放給環境造(zao)(zao)成(cheng)了巨大壓(ya)力(li)和(he)危害，生(sheng)石(shi)灰(hui)在(zai)(zai)鋼鐵、電(dian)力(li)、化(hua)工(gong)(gong)(gong)、煤炭等重(zhong)點(dian)行業(ye)、推(tui)廣廢(fei)水(shui)循(xun)環利(li)用(yong)，提高工(gong)(gong)(gong)業(ye)用(yong)水(shui)重(zhong)復利(li)用(yong)率。同(tong)時，生(sheng)石(shi)灰(hui)工(gong)(gong)(gong)業(ye)廢(fei)水(shui)處(chu)理(li)工(gong)(gong)(gong)藝、技術(shu)不斷(duan)提高，生(sheng)石(shi)灰(hui)給水(shui)處(chu)理(li)絮凝劑也提出了新的要求。