Fly Ash Chelating Agent

Fly Ash Chelating Agent

Product Overview:
The Fly Ash Chelating Agent is an improved formulation specifically designed for use in municipal waste-to-energy incineration plants in China. This agent is easy to apply and cost-effective. It enables one-time chelation of multiple coexisting heavy metal ions, allowing treated fly ash to meet the national landfill standard GB16889-2008. The product is particularly effective in chelating common excessive heavy metals such as lead (Pb) and zinc (Zn).

With an annual delivery volume exceeding 10,000 tons, this chelating agent has become a mainstream treatment chemical in Chinas waste incineration industry, with end-users covering a large portion of the countrys power plant groups.

Product Features:

• High efficiency in binding multiple heavy metal ions simultaneously

• Excellent performance on lead and zinc

• Simple application process

• Low overall treatment cost

• Treated fly ash meets landfill disposal requirements per GB16889-2008

Typical On-Site Application Process:

1. Collection:
   Fly ash collected from the flue gas purification system is conveyed into an ash silo.

2. Feeding:
   The ash is then quantitatively delivered into a mixing machine.
   Add 25%–29% water (or landfill leachate) relative to the weight of the fly ash, along with the required dosage of heavy metal stabilizer.

3. Mixing:
   The fly ash, water (or leachate), and chelating agent are briefly stirred in the mixer.

4. Discharge & Curing:
   The treated fly ash is discharged into bulk bags below.
   After 24 hours of curing (to allow further chemical reaction), the fly ash can be transported to a standard municipal solid waste landfill.