Solidification treatment system for fly ash

Abstract

The invention discloses a solidification treatment system for fly ash. The solidification treatment system comprises a fly ash storage bin, a cement storage bin, an unloader, a weighing hopper, a stirrer, a surge bin, a vibrating screen, a finished product warehouse, a chelating agent supplying device, a granulator and a bucket elevator, wherein both the fly ash storage bin and the cement storage bin are connected with the weighing hopper through the unloader; both an outlet of the weighing hopper and the chelating agent supplying device are respectively connected with the stirrer; the stirrer, the surge bin, the granulator, the vibrating screen and the finished product warehouse are sequentially connected; the vibrating screen is connected with the surge bin through the bucket elevator. The solidification treatment system disclosed by the invention is simple in operation and convenient to use; the problem in the prior art that since the fly ash as powder leaks in the transportation process to a landfill, the surrounding environment is influenced is solved.

Description

technical field [0001] The invention relates to safe disposal of incineration fly ash produced after waste incineration for power generation, in particular to a system for solidifying fly ash. Background technique [0002] Waste incineration fly ash is the material collected in the heat recovery system and flue gas purification system after domestic waste incineration. The amount of fly ash produced is related to the type of garbage, incineration conditions, type of incinerator and flue gas treatment process, and generally accounts for 3% to 5% of the amount of garbage incinerated. The analysis shows that waste incineration fly ash is not a chemically inert substance, and contains a high content of Cd, Pb, Zn, Cr and other harmful heavy metal substances and salts that can be leached by water. If not handled properly, it will cause heavy metal pollution. Migration, pollution of groundwater, soil and air. [0003] The traditional fly ash solidification treatment system fully...

AI Technical Summary

Problems solved by technology

The moisture content of the fly ash processed by the traditional fly ash solidification system reaches about 27%. However, since the processed fly ash is in powder form, ash will be generated during transportation, causing damage to the surrounding environment.

At the same time, if the cement curing system is used alone, heavy metals will slowly leak out over time, causing environmental pollution again, and the harm cannot be completely eliminated

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