Retreatment method for tailing materials generated by comprehensive treatment of waste incinerator residues

A technology for comprehensive treatment of waste incineration slag, applied in chemical instruments and methods, filter screens, grilles, etc., can solve the problems of unmentioned tailings, environmental pollution, waste of resources, etc., and achieves remarkable recovery effect and high strength. , the effect of rapid prototyping

Active Publication Date: 2018-06-29
扬州市同创再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the light weight of aluminum, it is often lost after being impacted by water, or landfilled with tailings, resulting in waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] A method for reprocessing the tailings generated after comprehensive treatment of waste incinerator slag includes the following steps:

[0024] (1) Collect the light-weight slag powder that flows into the slag storage tank after the waste incineration slag undergoes metal recovery treatment, and then sends it to the first rolling cage screen, the diameter of the first rolling cage screen is 1.5m, the length is 6m, and the mesh After screening, the tailings with a particle size greater than 0.8cm are sent to the first metal separator for metal aluminum recovery; the magnetic separation intensity of the first metal separator is 3500T, and the raw material transportation volume is about 12 tons / Hour, the conveying bandwidth is 1.2 meters, and the rotation speed is 3 meters / second.

[0025] (2) The tailings with a particle size of less than 0.8cm are sent to the second rolling cage screen. The diameter of the second rolling cage screen is 1.5m, the length is 8...

Example Embodiment

[0031] Example 2

[0032] A method for reprocessing the tailings produced after comprehensive treatment of waste incinerator slag, wherein in step (4), in parts by weight, 6 parts of cement, 105 parts of modified tailings, 6.8 parts of ceramic powder, 4 parts are taken Sodium sulfate, 0.8 parts of 4,4'-dioctyldiphenylamine, 2.3 parts of sodium citrate, 0.31 parts of triphenyl phosphite, and 2.2 parts of polyvinyl butyral. The rest of the technical content is the same as the first embodiment.

[0033] After testing, the flexural strength of the steam-cured brick prepared by the present invention is 4.87 MPa, and the compressive strength reaches 33.2 MPa.

Example Embodiment

[0034] Example 3

[0035] A method for reprocessing tailings produced after comprehensive treatment of waste incinerator slag, wherein in step (4), 5.5 parts of cement, 110 parts of modified tailings material, 8 parts of ceramic powder, 3.5 parts of sodium sulfate, and 0.6 parts are taken 4,4'-Dioctyl diphenylamine, 1.5 parts of sodium citrate, 0.4 parts of triphenyl phosphite and 2 parts of polyvinyl butyral. The rest of the technical content is the same as the first embodiment.

[0036] After testing, the flexural strength of the steam-cured brick prepared by the present invention is 5.2 MPa, and the compressive strength reaches 35.1 MPa.

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Abstract

The invention provides a retreatment method for tailing materials generated by comprehensive treatment of waste incinerator residues. Multistage screening and sorting steps are set in the retreatmentmethod and are used for efficiently recovering metallic aluminum in the tailing materials; meanwhile, the recovered tailing materials are specifically modified and can be used for producing baking-free bricks, so that recycling rate and resource recovery rate of wastes are improved.

Description

technical field [0001] The invention relates to the technical field of garbage recovery and reuse, in particular to a method for reprocessing tailings produced after comprehensive treatment of garbage incineration slag. Background technique [0002] Slag is a by-product of domestic waste incineration, including incineration residue remaining on the grate and particulate matter falling from between the grates. Slag consists of slag, bricks, glass, ceramics, stones, metals and organic matter. If you want to comprehensively utilize slag, you need to screen and classify it, and recycle useful metal materials to obtain high value-added products. [0003] CN105195313A discloses a method for recovering metals and combustibles from domestic waste incineration slag. The method realizes the separation of magnetic metals in slag through multi-stage gradient magnetic separation, uses two-stage eddy current separation to recover non-ferrous metals in slag, and finally , The magnetic se...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B40/02B07B1/22B07B1/46B03C1/02
CPCB03C1/02B07B1/22B07B1/4609C04B28/00C04B40/024C04B2201/50C04B18/141C04B18/165C04B22/147C04B24/06C04B24/121C04B24/003C04B24/26C04B2103/40
Inventor 梁品
Owner 扬州市同创再生资源有限公司
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