A method for preparing a sludge solidifying agent using carbon sequestration desulfurization ash
By preparing sludge solidifying agent through direct carbonization process and treating desulfurization ash using simultaneous autoclaving and carbonization process, the problems of resource utilization of desulfurization ash and treatment of river sludge have been solved, achieving efficient and low-cost river safety transformation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN IRON & STEEL METAL RESOURCES CO LTD
- Filing Date
- 2024-01-02
- Publication Date
- 2026-06-26
AI Technical Summary
Desulfurization ash from steel enterprises is difficult to utilize as a resource, and the gas-solid reaction rate of direct carbonization technology is slow, while the recycling of chemical additives for indirect carbonization technology is difficult. River silt treatment is costly and easily causes secondary pollution, affecting river safety.
A sludge solidifying agent was prepared using a direct carbon fixation process. Desulfurization ash was treated using a simultaneous autoclaving and carbonization process. The resulting sludge solidifying agent, composed of cement clinker, mineral powder, steel slag powder, carbon-fixed desulfurization ash, and additives, was then applied to river sludge treatment.
It realizes the resource utilization of desulfurization ash, improves the gas-solid reaction rate, reduces production costs, and solidifies silt to improve river safety, avoid the risk of soil erosion and collapse, and does not require the use of chemical additives.