【摘要】 磷(P)或氟(F)的阴离子团可以促进硅酸盐水泥熟料的烧成,因此,利用P与F的复合效应,并引入钢渣做晶种,分析晶种与阴离子的复合对硅酸盐水泥熟料形成规律所产生的影响。结果表明:磷渣、钢渣与萤石的三元复合体系对熟料中游离氧化钙含量的改善作用明显优于单掺磷渣或钢渣与萤石二元复合体系的。当煅烧温度提高至1350℃或1450℃时,三元复合体系仍明显改善了生料的易烧性。三元复合体系可改善液相的粘度与矿物的形貌,促进3CaO.SiO2的形成和生长发育。热分析表明:与空白样相比,磷渣、钢渣与萤石的三元复合体系将碳酸盐分解峰值温度、反应起始温度和反应结束温度分别降低了50,15℃和55℃。更多还原

【Abstract】 Phosphorus or fluorine anions can promote sintering of portland cement clinker.Therefore,using the composite effect of phosphorus and fluorine anions,and adding steel slag as the crystal seed,the influences of crystal seed and anions on the formation of portland cement clinker were analyzed.The results indicated that the phosphorus slag-steel slag-fluorite system improved f-CaO content in portland cement clinker better than phosphorus slag or steel slag-fluorite.Moreover,the phosphorus slag-steel slag-fluorite system still improved the burnability of portland cement raw meals obviously when the sintering temperature was varied from 1 250 ℃to 1 450℃.Phosphorus slag-steel slag-fluorite also decreased the viscosity of the liquid and crystal forms and the size of minerals,and promoted the formation and growth of 3CaO.SiO2 in clinker.Compared with the control sample,the phosphorus slag-steel slag-fluorite system reduced the peak temperature as well as the initial and final reaction temperature of carbonate decomposition,which were 50,15℃and 55℃lower.更多还原