Experimental Study on the Conversion of Desulfurization Residues into Sulphoaluminate Cement

摘要：

According to the complex compositions (with high contents of sulfur and calcium) of the desulfurization residues from coal-burning power plants, a possible idea is put forward to use them as the materials of sulfoaluminate cement. Through experiments, it is proved that the desulfurization residues, added to by some CaO or CaCO3, can be converted into sulfoaluminate cement at about 1300℃. In this way, the disadvantageous minerals in the desulfurization residues, such as free CaO, CaCO3, Ca(OH)2 as well as sulfur-containing minerals like CaSO3 and CaSO4, can all be completely utilized and converted into minerals of sulfoaluminate cement clinker, such as calcium sulfoaluminate(Ca4Al6O12SO4) and dicalcium silicate(Ca2SiO4), etc. In addition, the unburned carbon in the ashes can also be made good use of through further combustion. Therefore, this new utilization method, which can take out the maximum value of the desulfurization residues, is a high-efficiency way and may have bright prospects.

关键词： Desulfurization FGD residues Comprehensive utilization Sulphoaluminate cement

作者: Wenlong Wang Yong Dong Chunyuan Ma Zhanlong Song Xiren Xu

作者单位: Energy and Environment Institute, School of Energy and Power Engineering Shandong University, Jinan, Institute for Thermal Power Engineering, School of Energy and Power Engineering Shandong University,

会议类型: 国际会议

会议名称: 2007杭州国际动力工程会议(The International Conference on Power Engineering 2007)

会议地点: 杭州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）