关键词: 低钙水泥;低碳材料;碳化

Abstract: In order to save energy and reduce emission,a new type of cement clinker with C 3S2(3CaO· 2SiO2)as main component and C2S(2CaO· SiO2)as auxiliary component was produced with industrial raw materials.The suitable composition of clinker was optimized, and the formation process of clinker mineral was analyzed.The results shows that the suitable composition range of the clinker mineral is 53%-55%CaO,38%-41%SiO2,4%-9%Al2O3, and the optimum temperature range of the calcination process is 1260 ℃to 1320 ℃.The clinker presents a powder form,its specific surface area is 243.3 m2/kg and the average particle size is 31.26 μm.The rupture strength and compressive strength of clinker through 3 d of carbonization process with CO 2are 7.6 and 48.5 MPa,respectively.Analysis shows that the cement has remarkable energy-saving and emission reduction characteristics.

Key words: low calcium cement;low-carbon material;carbonization