Ash melting compound fluxing agent and ash melting treatment method

Abstract

The invention provides an ash melting compound fluxing agent. The ash melting compound fluxing agent comprises, by weight, 10 to 30 parts of mineral raw material containing aluminosilicate, 1 to 10 parts of boric acid and 1 to 10 parts of washed fly ash. Combination of the mineral raw materials containing aluminosilicate, the boric acid and the washed fly ash facilitates the molten ash to form a complete network structure, facilitates heavy metal and metal cations to be in key connection into the network structure, lowers the melting treatment temperature of the ash, facilitates the heavy metal to be migrated into the network structure and lowers melting cost. The invention further provides an ash melting treatment method. The ash melting treatment method comprises the steps of (1) providing an ash sample and the ash melting compound fluxing agent; (2) mixing the ash sample and the ash melting compound fluxing agent into a mixture; (3) feeding mixture into a plasma melting furnace formelting treatment; (4) conducting cooling after the mixture is completely molten and then obtaining glassy state slag is obtained. The ash melting compound fluxing agent effectively lowers the ash treatment cost, improves the solidification rate of heavy metal melting and solidification, lowers the leaching toxicity of the heavy metal, protects the environment and makes waste profitable.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to an ash-slag melting composite flux and a method for melting ash-slag. Background technique [0002] Incineration ash is the combustion product of incineration to treat solid waste. Due to the serious pollution to the environment such as heavy metal pollution, dioxin pollution and dissolved salt pollution, it is listed as "hazardous waste" and must be disposed of properly, otherwise it will cause environmental pollution. Pollution and other issues have a profound impact on the sustainable development of cities. [0003] The stabilization treatment methods for incineration ash in my country mainly include cement solidification, asphalt solidification, melt solidification, and chemical agent solidification and stabilization. Among them, the melting and solidification treatment is mainly to melt the ash or the ash mixed with an appropriate amount of flux at an appropriate te...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of ash melting composite flux and a method for melting and processing ash, so as to solve the problem that the existing treatment methods are difficult to treat ash in an efficient, harmless and resourceful way, and effectively reduce the cost of ash treatment. cost, improve the solidification rate of molten solidified heavy metals, reduce the leaching toxicity of heavy metals, help the ash to melt to form a stable glass body, protect the environment, and turn waste into treasure

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