褐(he)藻酸鈉的(de)(de)凝固劑(ji)、防治小(xiao)麥、蘋果、白菜等(deng)腐(fu)爛及食品防腐(fu)劑(ji)、制(zhi)取及其他(ta)鈉化(hua)(hua)合物、鋼鐵熱處理介質(zhi)等(deng)。鹽(yan)，在(zai)我們(men)生活(huo)中很常見，但這(zhe)里(li)我們(men)介紹的(de)(de)鹽(yan)卻不(bu)是家中廚房里(li)的(de)(de)鹽(yan)，而是工(gong)業(ye)(ye)上常用(yong)到的(de)(de)鹽(yan)——工(gong)業(ye)(ye)鹽(yan)。基(ji)本(ben)化(hua)(hua)學工(gong)業(ye)(ye)主(zhu)要(yao)產品中的(de)(de)鹽(yan)酸、、純堿(jian)、氯化(hua)(hua)銨、等(deng)主(zhu)要(yao)是用(yong)工(gong)業(ye)(ye)鹽(yan)為原料生產的(de)(de)。基(ji)本(ben)化(hua)(hua)學工(gong)業(ye)(ye)主(zhu)要(yao)產品中的(de)(de)鹽(yan)酸、、純堿(jian)、氯化(hua)(hua)銨、等(deng)主(zhu)要(yao)是用(yong)工(gong)業(ye)(ye)鹽(yan)為原料生產的(de)(de)。

也(ye)可(ke)(ke)將(jiang)海水(shui)經蒸(zheng)汽加溫，再經砂濾器過濾，合肥(fei)工(gong)(gong)(gong)業(ye)(ye)鹽(yan)(yan)(yan)，用(yong)(yong)離子(zi)交換膜(mo)電(dian)滲析法進行濃(nong)縮，就可(ke)(ke)以獲得鹽(yan)(yan)(yan)水(shui)。還可(ke)(ke)用(yong)(yong)巖(yan)鹽(yan)(yan)(yan)、鹽(yan)(yan)(yan)湖鹽(yan)(yan)(yan)水(shui)為原(yuan)料，經日曬干燥，制得原(yuan)鹽(yan)(yan)(yan)。制革工(gong)(gong)(gong)業(ye)(ye)常用(yong)(yong)的(de)(de)防腐方法，就是鹽(yan)(yan)(yan)干法；在冶金工(gong)(gong)(gong)業(ye)(ye)中(zhong)鹽(yan)(yan)(yan)在冶金工(gong)(gong)(gong)業(ye)(ye)中(zhong)用(yong)(yong)作氯化(hua)焙燒劑和淬火劑；在化(hua)學工(gong)(gong)(gong)業(ye)(ye)中(zhong)鹽(yan)(yan)(yan)是化(hua)學工(gong)(gong)(gong)業(ye)(ye)，化(hua)學工(gong)(gong)(gong)業(ye)(ye)是國民經濟的(de)(de)基(ji)礎產業(ye)(ye)。在染(ran)料工(gong)(gong)(gong)業(ye)(ye)常用(yong)(yong)的(de)(de)原(yuan)料如純堿(jian)是鹽(yan)(yan)(yan)為原(yuan)料直(zhi)接生產出來的(de)(de)，而且染(ran)料生產過程中(zhong)幾乎每個(ge)步驟都要耗用(yong)(yong)一定數量(liang)的(de)(de)鹽(yan)(yan)(yan)；

工(gong)(gong)(gong)(gong)業(ye)鹽(yan)(yan)(yan)(yan)又(you)叫工(gong)(gong)(gong)(gong)業(ye)用(yong)(yong)鹽(yan)(yan)(yan)(yan)，其(qi)主(zhu)要含量是氯化鈉。常見(jian)的(de)工(gong)(gong)(gong)(gong)業(ye)鹽(yan)(yan)(yan)(yan)有大顆粒鹽(yan)(yan)(yan)(yan)、小白(bai)鹽(yan)(yan)(yan)(yan)、精制鹽(yan)(yan)(yan)(yan)、副產鹽(yan)(yan)(yan)(yan)等(deng)。油(you)井(jing)鉆探過程中(zhong)(zhong)，為保護巖鹽(yan)(yan)(yan)(yan)層(ceng)巖心的(de)完整性，工(gong)(gong)(gong)(gong)業(ye)鹽(yan)(yan)(yan)(yan)多少錢一袋，需在(zai)(zai)(zai)泥漿中(zhong)(zhong)添(tian)加(jia)鹽(yan)(yan)(yan)(yan)作穩定劑；在(zai)(zai)(zai)工(gong)(gong)(gong)(gong)業(ye)化時(shi)代之(zhi)前，人們所(suo)說的(de)鹽(yan)(yan)(yan)(yan)，工(gong)(gong)(gong)(gong)業(ye)鹽(yan)(yan)(yan)(yan)生產廠家，特指生活(huo)中(zhong)(zhong)調味用(yong)(yong)的(de)，而(er)不是現在(zai)(zai)(zai)化學科(ke)學中(zhong)(zhong)的(de)“鹽(yan)(yan)(yan)(yan)”。在(zai)(zai)(zai)機(ji)械工(gong)(gong)(gong)(gong)業(ye)中(zhong)(zhong)在(zai)(zai)(zai)鑄造時(shi)，鹽(yan)(yan)(yan)(yan)可用(yong)(yong)作非鐵金(jin)屬和(he)合金(jin)鑄造中(zhong)(zhong)型砂的(de)優良粘合劑；在(zai)(zai)(zai)建材工(gong)(gong)(gong)(gong)業(ye)中(zhong)(zhong)用(yong)(yong)鹽(yan)(yan)(yan)(yan)制成的(de)純堿是生產玻璃的(de)主(zhu)要原料(liao)；