Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement kiln co-processing fly ash solidification method
The invention relates to the field of environmental protection, in particular to a cement kiln co-processing fly ash solidification method. The cement kiln co-processing fly ash solidification methodcomprises the steps of material mixing, pulping, dehydration, calcination and the like. The invention provides a method for co-processing solidified fly ash by using a cement kiln. According to the method, soluble chloride in the fly ash is washed away in a pulping manner; meanwhile, under the action of the heavy metal chelating agent, soluble heavy metal salt is chelated and precipitated and is fixed in dry slurry, and meanwhile, the heavy metal salt dissolved in the slurry is further cured by utilizing carbon dioxide gas contained in cement kiln flue tail gas so that the obtained waste liquid does not need to be subjected to secondary treatment; according to the method, the flue tail gas of the cement kiln and the high temperature of the rotary kiln are comprehensively utilized, and thepurpose of volume reduction and weight reduction comprehensive utilization in waste treatment is achieved.
本发明涉及环保领域，具体关于一种水泥窑协同处置固化飞灰方法；本发明的一种水泥窑协同处置固化飞灰方法，包括：混料、制浆、脱水和煅烧等步骤；本发明提供了利用水泥窑协同处置固化飞灰方法，本方法使用打浆的方式将飞灰中的可溶性氯化物洗去，同时在本发明提供的一种重金属螯合药剂的作用下将可溶性重金属盐螯合沉淀下来，固定在干浆料中，同时还利用水泥窑烟道尾气中含有二氧化碳气体进一步固化浆料中溶解的重金属盐，得到的废液中不需要进行二次处理；本发明综合利用了水泥窑的烟道尾气和回转窑的高温，达到了废物处理中的减容减量综合利用的目的。
Cement kiln co-processing fly ash solidification method
The invention relates to the field of environmental protection, in particular to a cement kiln co-processing fly ash solidification method. The cement kiln co-processing fly ash solidification methodcomprises the steps of material mixing, pulping, dehydration, calcination and the like. The invention provides a method for co-processing solidified fly ash by using a cement kiln. According to the method, soluble chloride in the fly ash is washed away in a pulping manner; meanwhile, under the action of the heavy metal chelating agent, soluble heavy metal salt is chelated and precipitated and is fixed in dry slurry, and meanwhile, the heavy metal salt dissolved in the slurry is further cured by utilizing carbon dioxide gas contained in cement kiln flue tail gas so that the obtained waste liquid does not need to be subjected to secondary treatment; according to the method, the flue tail gas of the cement kiln and the high temperature of the rotary kiln are comprehensively utilized, and thepurpose of volume reduction and weight reduction comprehensive utilization in waste treatment is achieved.
本发明涉及环保领域，具体关于一种水泥窑协同处置固化飞灰方法；本发明的一种水泥窑协同处置固化飞灰方法，包括：混料、制浆、脱水和煅烧等步骤；本发明提供了利用水泥窑协同处置固化飞灰方法，本方法使用打浆的方式将飞灰中的可溶性氯化物洗去，同时在本发明提供的一种重金属螯合药剂的作用下将可溶性重金属盐螯合沉淀下来，固定在干浆料中，同时还利用水泥窑烟道尾气中含有二氧化碳气体进一步固化浆料中溶解的重金属盐，得到的废液中不需要进行二次处理；本发明综合利用了水泥窑的烟道尾气和回转窑的高温，达到了废物处理中的减容减量综合利用的目的。
Cement kiln co-processing fly ash solidification method
一种水泥窑协同处置固化飞灰方法
TONG LIANG (Autor:in) / TANG KE (Autor:in) / LI CHUNPING (Autor:in) / HUANG MINRUI (Autor:in) / HUANG XUEHUI (Autor:in) / GUO XIAOLU (Autor:in) / CHEN HUIBIN (Autor:in)
15.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
British Library Online Contents | 1995
Online Contents | 1995