Fly Ash Chelating Agent

Fly Ash Chelating Agent

1. Performance and Applications

Fly Ash Chelating Agent is an improved type of heavy metal chelating agent for fly ash. This product is an environmentally friendly chemical specifically designed for the stabilization treatment of waste incineration fly ash. It is developed based on the composition and morphological characteristics of fly ash, as well as the presence of heavy metals in fly ash. It is suitable for the characteristics of domestic waste incineration processes and specifically addresses the current situation where incomplete waste sorting and complex composition result in high heavy metal content in fly ash. The agent is easy to use and cost-effective, capable of completing chelation in a single step even when multiple heavy metal ions coexist. The treated fly ash meets the national standard "GB16889-2008" and complies with landfill requirements. This series of agents is particularly effective in chelating common超标 heavy metals such as lead and zinc.

2. Product Technical Specifications

3. Usage Method

General on-site treatment process:

(1) After fly ash collected from the flue gas purification system is sent to the ash silo, it is quantitatively conveyed to the mixer;

(2) Simultaneously, relative to the mass of fly ash being treated each time, input 25%~30% water (or landfill leachate), mix with the required amount of fly ash stabilizing chelating agent, and inject into the mixer;

(3) After brief stirring of fly ash, water (or landfill leachate), and fly ash stabilizing chelating agent in the mixer, the gate can be opened for discharge;

(4) The treated fly ash falls into the ton bag below and, after 24 hours of curing (subsequent reaction), can be transported to an ordinary domestic waste landfill.

Note: 1. Dosage to meet sanitary landfill standards:

(a) Without adding cement in the treatment process: the agent dosage is about 2%~5% of the fly ash mass.

(b) With cement added in the treatment process: the agent dosage can be increased accordingly.

2. Recommended dosage to meet hazardous waste landfill standards: the agent dosage can be appropriately reduced by about 50% based on the above (a) clause.

4. Packaging and Storage

Packaged in plastic drums, 1000Kg/drum or as per customer requirements;

Stable physicochemical properties, store in a cool and ventilated place, shelf life of 12 months or more.

5. Safety Precautions

This product is alkaline. Pay attention to labor protection during operation, avoid contact with skin and eyes. In case of contact, rinse thoroughly with plenty of water.