磷渣基复合矿化剂对水泥熟料烧成的影响

Effect of Phosphorous Slag Composite Mineralizer on the Sintering and Mineral Formation of Cement Clinker

研究了在水泥生料中掺入不同矿化剂对水泥生料的易烧性、硅酸盐水泥熟料矿物形成和岩相结构的影响。结果表明,与传统的萤石和磷渣矿化剂相比,磷渣与萤石复合的矿化剂可有效降低水泥熟料中游离氧化钙(f-CaO)的含量,改善生料的易烧性;在煅烧温度与时间增加的情况下,改善作用仍然明显;通过XRD、SEM与岩相结构分析表明,磷渣与萤石的复合矿化剂降低了液相的粘度,促进了A矿的生长,对矿物的结晶形态有改善作用,有利于晶体尺寸的生长发育。

The Influences of adding different mineralizers on bumability of Portland cement raw meals, mineral composition and petrographic structure of cement clinker were studied in this paper. The results showed that compared with traditional fluorite and phosphorous slag, phosphorous slag composite mineralizer was effective on reducing amount of f-CaO in cement clinker and improving burnablity of raw meals, but the effect was still obvious when sintering temperature and sintering time were in- cre.asing, The analysis of XRD, SEM and petrographic structure showed that phosphorous slag composite mineralizer decreased viscosity of liquid, promotes the formation of Alite in clinker and improves crystal form and size of minerals.