Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology

Abstract

The invention provides a method for achieving harmless disposal of garbage fly ash by means of a rotary kiln technology. According to the method, the rotary kiln technology is utilized, the processes of burdening, uniform mixing, pelleting, screening, feeding, igniting, calcining, residue collecting, flue gas purifying and the like are used for achieving harmless disposal of the garbage fly ash, harmless disposal is achieved, and meanwhile residues can be used as building materials, so that the purposes of harmlessness, stabilization, reduction and reclamation of the garbage fly ash are achieved.

Description

technical field

[0001] The invention belongs to the field of solid waste treatment, and in particular relates to a method for harmlessly disposing of garbage fly ash by utilizing the rotary kiln technology. Background technique

[0002] Domestic waste incineration fly ash refers to the residue collected in the flue gas purification system of waste incineration power plants. Fly ash accounts for about 10% of the total waste incinerated. Domestic waste incineration fly ash contains a large amount of toxic and harmful substances such as heavy metals and dioxins. The International Center for Cancer Research of the World Health Organization has identified dioxins as a primary carcinogen. According to statistics, as of now, more than 300 waste incineration power plants have been built nationwide, with a daily processing capacity of more than 300,000 tons of domestic waste. It is estimated that the annual production of waste incineration fly ash is about 3.2 million tons, and it ...

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