经固硫的流化床燃煤灰渣有明显的早期水硬性,甚至可在与水混合几小时后即凝结硬化,而未经固硫的灰渣则不明显.本文采用X射线衍射、红外光谱和化学方法对固硫灰渣早期水硬性机理进行研究,结果表明:固硫灰渣基本不含水泥熟料成分,矿物主要以无定形态存在;固硫灰渣中[SiO4]及[AlO6]的聚合程度均低于未经固硫的流化床灰渣及粉煤灰;进一步的化学测定结果证实,固硫灰渣早期水硬性主要来源于一定数量水化性能较快的无定形矿物组分.
参考文献
| [1] | Odler I;Zysk K H .Hydraulic properties of fluidized bed combustion ashes[J].Materials Research Society Symposium Proceedings,1990,178:169-196. |
| [2] | 王智 .流化床燃煤固硫渣特性及其建材资源化研究[D].重庆大学,2002. |
| [3] | J.Iribarne;A.Iribarne;J.Blondin .Hydration of combustion ashes-a chemical and physical study[J].Fuel,2001(6):773-784. |
| [4] | Yinghai Wu;Edward J Anthony;Lufei Jia .Steam hydration of CFBC ash and the effect of hydration conditions on reactivation[J].Fuel,2004(10):1357-1370. |
| [5] | Davies N H;Hayhurst A N;Laughlin K M.The oxidation of calcium sulphide at the temperatures of fluidized bed combustors[A].Irvine,CA,USA,1994:211-218. |
| [6] | GB/T 12960-1996.GB/T 12960-1996.水泥组份的定量测定[S].北京:中国标准出版社,1996. |
| [7] | Junhu Zhou;Jun cheng;Xinyu Cao .Experimental research on two-stage desulfurization technology in traveling grate boilers[J].Energy,2001(8):759-774. |
| [8] | 彭文世;刘高魁.矿物红外光谱图集[M].北京:科学出版社,1982:11-12. |
| [9] | Leeuyer I;Bieoechi S;Ausset P .Physieo-chemical characterization and leaching of desulphurization coal ny ash[J].Waste Management & Research,1996,14(01):15-28. |
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