用阜新煤矸石制备阿利特-硫铝酸盐水泥的试验研究  

Experiment Study on Alite-sulphoaluminate Cement Using Coal Gangues from Fuxing District, Liaoning Provence, China

作　　者：王国平[1] 孙传敏[1] 张平萍[1] 王自有[1] 苏小丽[1] 钟素华[1] 

机构地区：[1]成都理工大学地球科学学院,610059

出　　处：《地质论评》2005年第5期600-605,共6页Geological Review

基　　金：财政部矿山保护项目(编号 财建[2003]328号)资助的成果。

摘　　要：我国大量堆存和正在排放的煤矸石,既是一种矿业排量最大的废弃物,又可以被认为是一种可利用的巨型资源。阜新煤矸石主要由石英、长石、伊利石等矿物组成,化学成分含60%～67%SiO2,13%～18%Al2O3,具有高硅低铝特征,属于目前难以利用煤矸石。本文实验采用了C3S-C4A3S-C2S-C4AF体系,利用煤矸石的Al2O3煅烧成无水硫铝酸钙而不是铝酸三钙。添加BaSO4、CaF2和铬渣,使硅酸三钙和无水硫铝酸钙能在1300～1360℃共生,制备出了阿利特-硫铝酸盐水泥。水泥熟料在1360℃,保温1小时烧成。研制的煤矸石水泥3天和28天抗压强度分别达到了34.7～36.8MPa和52.2～54.4MPa,达到了525#早强型高性能水泥指标。Voluminous wastes-coal gangues-have been discharged from innumerable coal mines in China, which produce a great deal of environment problem. The coal gangues from the coal mines of Fuxing district, Liaoning Provence, are mainly composed of quartz, illite, and feldspar, with a chemical composition of 60%- 70% SiO2, 13%-18% Al2O3, belonging to the high-silica/low alumina type coal gangues. This type of coal gangue has been considered difficult to use as a raw material for high-quality cement. A system C3S-C4A3S^-- C2S-C4AF has been designed in which the alumina of gangue has been taken to form sulphoaluminate （C4A3S） other than aluminate （C3A） and thus form alite-sulphoaluminate cement. The C3S and C4A3S can be in paragenesis at 1300- 1360℃ in using BaSO4, CaF2, Cr2O3 in industrial waste as activating agent. The clinkers have been prepared at 1360℃ for 1 hour. The compressive strength of the prepared alite-sulphoaluminate cement has been measured up to 34.7-36.8 MPa and 52.2-54.4 MPa for 3 and 28 days, respectively.

关 键 词：低铝煤矸石 阜新 C3S—C4A3S—C2S—C4AF体系 阿利特-硫铝酸盐水泥 煤矸石水泥 试验研究 制备 无水硫铝酸钙 Al2O3 C4A3S 

分 类 号：TQ172.4[化学工程—水泥工业]