Ash melting compound fluxing agent and ash melting treatment method

A technology of flux and slag, which is applied in chemical instruments and methods, removal of solid waste, glass furnace equipment, etc., can solve problems such as difficulty in efficient, harmless and resourceful treatment of ash and slag

Inactive Publication Date: 2019-09-06
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Ash melting compound fluxing agent and ash melting treatment method
  • Ash melting compound fluxing agent and ash melting treatment method

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Embodiment 1

[0025] A composite flux for melting ash and slag comprises, in parts by weight, 10 parts of mineral raw materials containing aluminosilicate, 1 part of boric acid and 10 parts of washed fly ash. Among them, the aluminosilicate-containing mineral is bentonite.

[0026] The method for melting the ash and slag by using the ash and slag melting compound flux agent comprises the following steps:

[0027] (1) Provide ash and slag samples and the above-mentioned ash and slag melting composite flux, the ash and slag melting composite flux accounts for 20% of the total amount of the mixture;

[0028] (2) Fully stir the ash slag sample and the ash slag fusion composite flux to form a mixture, and perform ball milling treatment, and then place it in an oven at 60°C for drying;

[0029] (3) Put the mixed material into a plasma melting furnace for melting treatment, and heat at 1300° C. for 1 hour;

[0030] (4) After the mixture is completely melted, it is cooled in water to obtain glass...

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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...

Claims

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Application Information

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IPC IPC(8): B09B3/00C03C1/00C03C6/02C03B5/16
CPCC03C1/00C03C1/002C03B5/16B09B3/40Y02P40/50
Inventor 张乾生陆杰陈袆陈明周杨明辉石慧
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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