Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Harmless sintering treatment method of fly ash in waste incineration power plant

A waste incineration and sintering treatment technology, which is applied to the removal of solid waste, etc.

Inactive Publication Date: 2011-12-07
CHONGQING IRON & STEEL (GRP) CO LTD
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at the existing processing costs of processing power plant fly ash in the prior art, wasting deficiencies such as iron and CaO that can be recycled, and the purpose of the present invention is to Provides a harmless sintering treatment method for fly ash of waste incineration power plants, which has low treatment cost and can recycle iron and CaO

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0027] 1. Experimental data of pelletizing fly ash and metallurgical waste

[0028] Proportion of fly ash cold solidified pellets (%):

[0029] serial number Concentrate Dust Gas Ash Sulfuric acid slag quicklime fly ash Steelmaking sludge plan 1 7 30 12 30 6 5 10 Scenario 2 7 31 12 30 7 3 10

[0030] Index of cold-set pellets:

[0031]

[0032] 2. Sintering experiment data

[0033] The basicity of the sintering mixture is 1.80, MgO 2.5%, and the weight ratio of cryosetting balls is 7%; the benchmark is that no cold setting balls are added; due to the small supply of fly ash, the sintering experiment was not carried out in scheme 1;

[0034] index benchmark Cold-set balls for field use Scenario 2 Utilization factor t / m 2 h 1.750 1.821 1.777 Yield% 67.2 69.5 68.9 Weeping speed mm / min 26.34 26.75 26.42 Sintering temperature °C 1168 1250 1295 Drum Index% 61.0 6...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a harmless sintering treatment method for fly ash of waste incineration power plant, which is characterized in that: (1) mixing fly ash and metallurgical waste to make pellets, the weight of fly ash accounts for 2.5-8%; the metallurgical waste , is metallurgical dust, gas ash, sulfuric acid slag, quicklime, steelmaking sludge, any two, three, four or five of them are mixed in any proportion; The sintering mixture is sintered, and the weight of cold solidified balls accounts for 7-10% of the sintering mixture; the pellets obtained after sintering are used as smelting pellets for future use. The treatment method of the present invention can actually process the fly ash, utilize the fly ash, reduce the amount of waste treated as garbage, and save the fly ash disposal fee; utilize iron and CaO in the fly ash as resources, iron and CaO, etc. can be recycled; it not only realizes the harmless treatment of fly ash, not only protects the environment, reduces pollution, but also comprehensively utilizes resources, with remarkable economic and social benefits.

Description

technical field [0001] The invention relates to a treatment and utilization method of fly ash of a waste incineration power plant, in particular to a harmless sintering treatment method of fly ash of a waste incineration power plant. Background technique [0002] Waste incineration power generation has shown a good momentum of development across the country, but the residue produced by waste incineration—fly ash contains heavy metals (lead, cadmium, mercury, etc.) and dioxins, which will pose a serious threat to people’s living environment if not handled properly . my country has listed the fly ash of solid waste incineration as hazardous waste, and the fly ash must be treated according to the standards of hazardous waste. How to effectively treat and recycle it is undoubtedly an important issue to be solved urgently. Fly ash contains a variety of substances harmful to the environment, which seriously pollute the environment; among them, dioxins, etc., have a more serious ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 王天雄张理全
Owner CHONGQING IRON & STEEL (GRP) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com