Resource disposal method and equipment for garbage fly ash

Abstract

The invention discloses a reclamation treatment method and equipment for rubbish fly ash. The method comprises the steps that (1) according to content of all components in to-be-treated rubbish fly ash raw materials and viscosity of a certain glass liquid state, silicate, borate, sodium carbonate, a cosolvent and a fining agent are mixed and pressed into balls; (2) the balls are added in an electric melting furnace which has an upper electrode, a main electrode and a starting electrode for electric smelting, during the electric smelting process, the globular materials form a raw mwterial layer, a viscosity layer, an initial melting layer and a high temperature layer, wherein the raw mwterial layer, the viscosity layer and the initial melting layer are located in an upper pool, and the hightemperature layer is located in a lower pool, and after clarification is carried out on the high temperature layer, vitreous humour is obtained; (3) after centrifugation, cotton collection and solidification and shaping are carried out on the vitreous humour, and glass wool is obtained. The equipment comprises a material mixing system, a ball pressing system, a furnace feeding system, the electric melting furnace and a centrifugal machine which are in sealing communication in turn; the method is thoroughly harmless; the whole design is unitized, standardized and modularized; the energy utilization pattern is efficient and feasible, and the final recycling cyclic utilization of the rubbish fly ash is achieved.

Description

technical field [0001] The invention belongs to the disposal and comprehensive utilization of hazardous solid waste in the field of environmental protection, and in particular relates to a resource disposal method and equipment for waste fly ash. Background technique [0002] Garbage fly ash is different from waste fly ash from power plants. It is rich in heavy metals, dioxins and other toxic substances. It is a highly toxic pollutant and highly carcinogenic. "Standards for Pollution Control of Domestic Garbage Incineration (GB18485-2014)" records that the average emission of dioxins has increased from 1.0ngTEQ / m 3 Reduced to 0.1ngTEQ / m 3 , the same as EU2000 / 76 / EC, but the current control of dioxins is mainly at the back end of the incineration line, using the "activated carbon + bag dust removal" process to only transfer dioxins from the gas phase to the solid phase of garbage fly ash , no effective reduction was formed. At present, garbage fly ash has been included in ...

AI Technical Summary

Problems solved by technology

However, there are few types of fly ash that can be disposed of in this plan, which is limited to the fly ash of power plants, and the disposal effect of other fly ash with more complex components is not good, and the efficiency of the disposal process is low, and fly ash is prone to dust. , causing secondary pollution and incomplete disposal

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