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Garbage incineration fly ash brick/watt and its preparation method

A technology of waste incineration fly ash and sintered bricks, which is applied in the field of environmental engineering, can solve the problems of large amount of admixture, and achieve the effect of large amount of admixture, excellent commerciality, and excellent effect

Inactive Publication Date: 2019-01-11
张晓蓓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. The amount of mixing treatment is large, which has practical significance for the comprehensive and harmless treatment of waste incineration fly ash

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The source of waste incineration fly ash and bottom ash used in this example is Zichuan Domestic Waste Incineration Power Plant of Zibo Lvneng Environmental Protection Energy Co., Ltd., a subsidiary of China Jinjiang Environmental Holdings Co., Ltd., which has undergone cement chelation treatment. The basic composition of waste incineration fly ash after cement chelation treatment includes: silicon dioxide 32.86%, aluminum oxide 12.09%, titanium dioxide 0.67%, calcium oxide 19.42%, magnesium oxide 3.24%, potassium oxide 2.46%, sodium oxide 2.36% %, loss on ignition 14.60%. The method for producing sintered bricks by recycling waste incineration fly ash, the process steps include: fly ash and bottom ash pretreatment, batching, ball milling, powder making, molding, drying, high-temperature firing, grading and packaging, etc.:

[0058] The pretreatment of fly ash and bottom ash is to mix and dry the fly ash and bottom ash after the cement chelation treatment in the waste i...

Embodiment 2

[0065] Prepare sintered bricks, the basic process and steps are the same as the above-mentioned Example 1, the difference is that the raw materials are composed of 25 parts by weight of clay, 40 parts of waste incineration fly ash and bottom ash after cement chelation treatment, 17 parts of raw coke, three-stage 14 parts of diopside, 5.5 parts of tile edging waste or solid construction waste, and the firing time is 38 minutes.

Embodiment 3

[0067] Prepare sintered bricks, the basic process and steps are the same as the above-mentioned Example 1, the difference is that the raw materials are composed of 27 parts by weight of clay, 40 parts of waste incineration bottom ash after cement chelation treatment, 13 parts of raw coke, three-grade diopside 12 parts, the firing time is 35min.

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Abstract

The invention discloses a garbage incineration fly ash brick / watt and its preparation method and belongs to the technical field of environmental engineering. The brick / watt comprises, by weight, 18 to32 parts of clay, 24 to 55 parts of waste incineration fly ash or / and bottom ash after cement chelation treatment, 0 to 22 parts of tile edge grinding wastes and 0 to 16 parts of solid construction wastes. The preparation method comprises: putting raw materials into a ball mill according to a ratio, adding a ball milling aid into the raw materials, carrying out ball milling to obtain slurry, carrying out milling and drying, carrying out pressing under high pressure to obtain a blank and carrying out firing at 1020-1250 DEG C. The garbage incineration fly ash brick / watt has the advantages of low treatment cost, large doping amount, good decomposition of dioxins and good solidification effects of heavy metals.

Description

technical field [0001] The garbage incineration fly ash brick / tile and its preparation method belong to the technical field of environmental engineering. Background technique [0002] Waste incineration fly ash refers to the residues collected in the flue gas purification system of waste incineration plants, generally including dust collector fly ash and absorption tower fly ash, which contains flue ash, added chemicals and chemical reaction products. As a substance with high specific surface area, waste incineration fly ash not only enriches a large amount of toxic heavy metals such as mercury, lead and cadmium, but also enriches a large amount of dioxins. It is a kind of heavy metal hazard and environmental persistence. Double-material hazardous waste with organic toxicity and hazard characteristics is extremely harmful to human health and the ecological environment. [0003] Waste incineration fly ash is fine dust particles with a very low moisture content, in the form o...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/135C04B33/13C04B33/04C04B33/34
CPCC04B33/04C04B33/13C04B33/1324C04B33/1352C04B33/1355C04B33/34Y02P40/60
Inventor 张晓蓓
Owner 张晓蓓
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