昌吉州燃煤电厂粉煤灰物化性质及其综合利用分析
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摘要
新疆昌吉州粉煤灰量逐年递增给当地造成了严重的环境污染,同时企业无法对其回收利用造成了较大的资源浪费。通过对新疆昌吉州十二家燃煤电厂粉煤灰进行物理化学分析,发现主要组成为二氧化硅,其含量平均为47.43%;三氧化铝、三氧化铁含量平均为17.98%、7.16%。为了提高粉煤灰的综合利用率,结合此次分析结果及粉煤灰资源化利用现状,对昌吉州粉煤灰在建筑行业、农业、化学工业、冶金工业、环境保护业的高附加值利用方面提出了利用对策。
The amount of fly ash in Changji Prefecture, Xinjiang is increasing year by year, causing severe environmental pollution to the local area. Meanwhile, enterprises could not recycle the fly ash, resulting in a great waste of resources. The physicochemical analysis of fly ash from 12 coal-fired power plants in Changji Prefecture, Xinjiang shows that the main composition is silicon dioxide with an average content of 47.43%, and the average content of aluminum trioxide and ferric oxide is 17.98% and 7.16%. In order to improve the comprehensive utilization rate of fly ash, in combination with the analysis results and the resource utilization status of fly ash, countermeasures are proposed for high value-added utilization of Changji fly ash in building industry, agriculture, chemical industry, metallurgical industry and environmental protection industry.
The amount of fly ash in Changji Prefecture, Xinjiang is increasing year by year, causing severe environmental pollution to the local area. Meanwhile, enterprises could not recycle the fly ash, resulting in a great waste of resources. The physicochemical analysis of fly ash from 12 coal-fired power plants in Changji Prefecture, Xinjiang shows that the main composition is silicon dioxide with an average content of 47.43%, and the average content of aluminum trioxide and ferric oxide is 17.98% and 7.16%. In order to improve the comprehensive utilization rate of fly ash, in combination with the analysis results and the resource utilization status of fly ash, countermeasures are proposed for high value-added utilization of Changji fly ash in building industry, agriculture, chemical industry, metallurgical industry and environmental protection industry.
引文
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[2] 侯芹芹,张创,赵亚娟等.粉煤灰综合利用研究进展[J].应用化工,2018,47(6):1281-1284.
[3]孟宪彬,李明君,丁国光等.燃煤电厂粉煤灰综合利用分析[J].电力科技与环保,2017,33(4):50-52.
[4] 栾超,方光旭,卢洪源等.昌吉州燃煤固废资源化利用现状及对策[J].江西建材,2019,(1):3-5.
[5]边炳鑫,解强,赵由才等.煤系固体废物资源化技术[M].北京:化学工业出版社,2005.121-125.
[6]蒲维,梁杰,雷泽明等.粉煤灰提取氧化铝现状及工艺研究进展[J].无机盐工业,2016,48(2):9-12.
[7] 张金山,李彦鑫,曹永丹.粉煤灰的综合利用现状及存在问题浅析[J].矿产综合利用,2017,(5):22-26.
[8]茅沈栋,李镇,方莹.粉煤灰资源化利用的研究现状[J].混凝土,2011,(7):82-84.
[9]佟志芳,邹燕飞,李英杰.从粉煤灰提取铝铁新工艺研究[J].轻金属,2009,(1):13-16.
[10] 王永旺,房现阁,郭昭华等.粉煤灰提铝残渣资源化应用研究进展[J].露天采矿技术,2013,(6):81-84.
[11] 陈铁军,庄骏,展礼仁等.粉煤灰干湿联合磁选提铁试验研究[J].矿冶工程,2017,37(4):60-63.
[12] 姚志通.固体废弃物粉煤灰的资源化利用—以杭州热电厂和半山电厂粉煤灰为例[D].杭州:浙江大学海洋科学与工程学系,2010.
[13] 山东省电力工业局.从发电厂粉煤灰中磁选铁精矿[J].环境科学,1977,(1):24-27.
[14] Iyer R S,Scott J A.Power station fly ash—a review of value-added utilization outside of the construction industry [J].Resources,Conservation and Recycling,2001,31(3):217-228.
[15] Rubio B,Izquierdo M T,Mayoral M C,et al.Unburnt carbon from coal ashes as a precursor of activated carbon for nitric oxide removal[J].Hazard Mater,2007,(143):561-566.
[16] Davini P.Investigation of the SO2 adsorption properties of Ca(OH)2-flyash systems[J].Fuel,1996,(75):713-716.
[17] Masaki T,Nabuo T,Takeshi F.Experimental studies on the re-moval mechanism of mercury vapor by synthetic fly ash[J].Jpn Soc At-mos Environ,2000,(35):51-62.
[18]王命.煤粉灰改性增白的研究[D].广州:华南理工大学,2015.
[19]张金山,刘烨,王林敏.我国粉煤灰综合利用现状[J].西部探矿工程,2008,(9):215-217.
[20]王丽.粉煤灰处置现状与农业利用探索[J].中国化工贸易,2012,(5):323.