一种适用于高温焚烧环境的飞灰固化体制备方法
By introducing calcined hydrotalcite and polyphosphate interfacial protective layers into the fly ash solidified body, combined with an inert refractory aggregate and a metakaolin silicate network, the problem of locking in downstream chloride ions and heavy metals in high-temperature incineration environment was solved, ensuring the high-temperature stability and structural integrity of the solidified body.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN ENERGY SAVING & ENV PROTECTION INVEST CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are unable to effectively lock free chloride ions and heavy metals in fly ash under high-temperature incineration environments, leading to structural deterioration, cracking, and equipment corrosion, which affects the stable operation of the incineration system.
A high-temperature resistant solidified body is constructed by using calcined hydrotalcite, inert refractory aggregate, metakaolin, alkali-activated liquid, and sodium hexametaphosphate through a stepwise shear mixing process. The hydrotalcite intercalation reaction and polyphosphate interface protective layer adsorb chloride ions, and heavy metals are encapsulated through an aluminosilicate network.
It effectively locks in free chloride ions and heavy metals under high temperature conditions, prevents the generation of volatile chlorides and the release of heavy metals, maintains the integrity and crack resistance of the solidified structure, and ensures the stable operation of the incineration system.
Smart Images
Figure CN122057766B_ABST