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)(gong)藝：　原始(shi)的石(shi)(shi)灰生(sheng)(sheng)產(chan)工(gong)(gong)藝是將石(shi)(shi)灰石(shi)(shi)與燃料（木(mu)材）分層鋪放，引(yin)火煅(duan)燒一周(zhou)即得。現(xian)代則采用(yong)(yong)機械化(hua)、半機械化(hua)立窯以及回(hui)轉窯、沸(fei)騰(teng)爐等(deng)設備(bei)進(jin)行生(sheng)(sheng)產(chan)。煅(duan)燒時間也相應地縮短(duan)，用(yong)(yong)回(hui)轉窯生(sheng)(sheng)產(chan)石(shi)(shi)灰僅需2～4小時，比用(yong)(yong)立窯生(sheng)(sheng)產(chan)可(ke)提高生(sheng)(sheng)產(chan)效率5倍以上。近年來(lai)，又出現(xian)了橫流式、雙斜(xie)坡(po)式及燒油環(huan)行立窯和(he)帶預(yu)熱(re)器的短(duan)回(hui)轉窯等(deng)節能效果顯(xian)著的工(gong)(gong)藝和(he)設備(bei)，燃料也擴大為(wei)煤、焦炭、重油或液化(hua)氣等(deng)。

生(sheng)石(shi)(shi)灰(hui)(hui)(hui)污水(shui)(shui)治理已(yi)成(cheng)為關乎經濟社會和(he)諧發展的一項(xiang)重大問題。在控(kong)制工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)污染(ran)(ran)物(wu)排放(fang)量(liang)的增長方(fang)面，國(guo)家采取嚴格措(cuo)施，生(sheng)石(shi)(shi)灰(hui)(hui)(hui)對(dui)造(zao)(zao)紙、釀(niang)造(zao)(zao)、化工(gong)(gong)(gong)(gong)(gong)、印(yin)染(ran)(ran)行業(ye)(ye)，加大治理和(he)改造(zao)(zao)力(li)度，淘汰高(gao)耗水(shui)(shui)、重污染(ran)(ran)的落(luo)后工(gong)(gong)(gong)(gong)(gong)藝和(he)設(she)備。我國(guo)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)化和(he)城市(shi)化進(jin)程(cheng)不(bu)斷推(tui)進(jin)，生(sheng)石(shi)(shi)灰(hui)(hui)(hui)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)廢(fei)水(shui)(shui)和(he)城市(shi)污水(shui)(shui)排放(fang)量(liang)逐年增加，因(yin)不(bu)達標排放(fang)給環(huan)(huan)境造(zao)(zao)成(cheng)了(le)巨(ju)大壓(ya)力(li)和(he)危害，生(sheng)石(shi)(shi)灰(hui)(hui)(hui)在鋼(gang)鐵、電力(li)、化工(gong)(gong)(gong)(gong)(gong)、煤(mei)炭等重點(dian)行業(ye)(ye)、推(tui)廣廢(fei)水(shui)(shui)循環(huan)(huan)利用(yong)，提(ti)高(gao)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)用(yong)水(shui)(shui)重復利用(yong)率(lv)。同(tong)時，生(sheng)石(shi)(shi)灰(hui)(hui)(hui)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)廢(fei)水(shui)(shui)處(chu)理工(gong)(gong)(gong)(gong)(gong)藝、技術不(bu)斷提(ti)高(gao)，生(sheng)石(shi)(shi)灰(hui)(hui)(hui)給水(shui)(shui)處(chu)理絮(xu)凝劑也提(ti)出了(le)新(xin)的要求。