一种洗涤飞灰回炉热处理的方法

By mixing and conditioning fly ash with materials such as washed sand tailings and then heat-treating it in the furnace, the problem of fly ash resource utilization and harmlessness is solved, realizing the efficient harmless and resource utilization of waste incineration fly ash, and reducing the risk of transportation pollution and energy consumption.

CN121426541BActive Publication Date: 2026-07-17BEIJING HENGXING ZIHUAN TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING HENGXING ZIHUAN TECHNOLOGY CO LTD
Filing Date
2025-10-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively achieve the resource recovery and harmless treatment of fly ash from waste incineration, and pose risks of pollution during hazardous waste transportation and high energy consumption.

Method used

After mixing the fly ash from the washing process with the tailings from the washing of construction waste, binders, and heavy metal stabilizers, the mixture undergoes conditioning and molding to form a high-strength molded product. This product is then fed into a waste incinerator for heat treatment, where it is detoxified using the high temperature of the incinerator, resulting in a finished product that can be used as a building material.

Benefits of technology

It achieves efficient and harmless treatment and resource utilization of fly ash, reduces the pollution risk of hazardous waste transportation, reduces equipment investment and energy consumption, and meets the emission standards for dioxins and heavy metals, demonstrating good applicability and desulfurization effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明属于垃圾焚烧飞灰处理技术领域,公开了一种洗涤飞灰回炉热处理的方法。本发明包括以下步骤:将洗涤飞灰与辅料混合进行物料调质,然后挤压成型,控制压缩比,可获得强度3~14MPa的成型产物。然后将成型产物投入垃圾焚烧炉进行回炉热处理,热处理工艺与垃圾焚烧炉工艺一致。获得的热处理产物二噁英降至1ng / kg TEQ以下,氯与重金属浸出指标满足标准要求,可再做进一步资源利用。本发明所述工艺方法,利用固废作为主要辅料,同时利用焚烧过程对飞灰进行热处理,既消纳了固废又将飞灰脱毒,同时飞灰热处理还起到了原位脱硫作用,具有良好的经济环境效益。
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