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1研究背景:材料波特兰水泥(编辑注:国内称硅酸盐水泥)的主要生产原料是石灰石(主要提供氧化钙)和粘土质原料(主要提供氧化硅和氧化铝,也提供部分氧化铁),在高温环境(约1350℃)下生成硅酸三钙、硅酸二钙等水硬性胶凝材料。水泥熟料高温烧成生产过程,大致分为前后两个化学反映过程:石灰石(CaCO_3)分解成CaO+CO_2,CaO与SiO_2或(和)Al_2O_3在更高温度下合成硅酸三钙、硅酸二钙等。因此,水泥熟料生产是一个高强度排放二氧化碳气体的过程——石灰石分解+窑炉升温热源;每生产一吨波特兰水泥熟料,约需消耗1.2
1 Research Background: Materials The main raw materials for production of Portland cement (Editor’s Note: Domestic Portland cement) are limestone (mainly calcium oxide) and clay materials (mainly silica and alumina, but also partial iron oxide ), To produce hydrated cementitious materials such as tricalcium silicate and dicalcium silicate in a high-temperature environment (about 1350 ° C). Cement clinker firing process is roughly divided into two chemical reaction process before and after: limestone (CaCO_3) into CaO + CO_2, CaO and SiO_2 or (and) Al_2O_3 at higher temperatures synthesis of tricalcium silicate, silicic acid Dicalcium and so on. As a result, cement clinker production is a process of high-intensity carbon dioxide gas emissions - limestone decomposition + kiln warming sources; consuming about one ton of Portland cement clinker consumes about 1.2