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Recycling method for using dregs of incinerator for municipal garbage

A technology for incinerating slag and municipal waste, applied in chemical instruments and methods, separating solids from solids by air flow, magnetic separation, etc. The problem of high energy consumption, to achieve the effect of increasing economic added value

Inactive Publication Date: 2007-10-10
TIANJIN TEDA ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing slag micronization technology cannot meet the micronization processing requirements of waste incineration slag
In addition, the existing slag micronization technology generally has problems such as high equipment investment, unstable product quality, low economic added value, and high processing energy consumption.

Method used

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  • Recycling method for using dregs of incinerator for municipal garbage

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Example 1: Example 1 of resource utilization method of municipal waste incineration slag

[0033] See attached drawing 1, the specific steps are as follows:

[0034] ① First remove the scrap iron from the slag of municipal waste incineration: the slag is transported from the storage warehouse to the fine powder processing workshop through the belt conveyor 2. During the transportation process, the slag on the belt conveyor is magnetically removed by the belt electromagnetic iron remover 1 , focusing on removing large pieces of scrap iron in the slag; the head roller of the belt conveyor is replaced by a slag roller permanent magnetic iron remover 3 The second magnetic iron removal is performed on the slag that is about to leave the belt conveyor, and most of the iron filings can be removed . Then carry out screening with vibrating screen 5 again, by above-mentioned three procedures, scrap iron removal rate can reach more than 98% in the incineration slag, and bulk mate...

example 2

[0041] Example 2: Example 2 of resource utilization method of municipal waste incineration slag

[0042] See attached drawing 1, the specific steps are as follows:

[0043] ① First remove the scrap iron from the municipal waste incineration slag: the slag is transported from the storage warehouse to the fine powder processing workshop through the belt conveyor 2. During the transportation process, the belt electromagnetic iron remover 1 is used to magnetically remove the iron from the slag on the belt conveyor. Focus on removing large pieces of scrap iron in the slag; the head roller of the belt conveyor is replaced by a slag roller permanent magnetic iron remover 3. The second magnetic iron removal is performed on the slag that is about to leave the belt conveyor, and most of the iron filings can be removed. Then carry out screening with vibrating screen 5 again, by above-mentioned three procedures, scrap iron removal rate can reach more than 98% in the incineration slag, and...

example 3

[0050] Example 3: Example 3 of the resource utilization method of municipal waste incineration slag

[0051] See attached drawing 1, the specific steps are as follows:

[0052] ① First remove the scrap iron from the municipal waste incineration slag: the slag is transported from the storage warehouse to the fine powder processing workshop through the belt conveyor 2. During the transportation process, the belt electromagnetic iron remover 1 is used to magnetically remove the iron from the slag on the belt conveyor. Focus on removing large pieces of scrap iron in the slag; the head roller of the belt conveyor is replaced by a slag roller permanent magnetic iron remover 3. The second magnetic iron removal is performed on the slag that is about to leave the belt conveyor, and most of the iron filings can be removed. Then carry out screening with vibrating screen 5 again, by above-mentioned three procedures, scrap iron removal rate can reach more than 98% in the incineration slag,...

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Abstract

A method for reclaiming the cinder of city garbage incinerator includes such steps as removing metals from said cinder, screening, ball grinding, sorting by granularities, continuous ball grinding of coarse particles, and collecting the fine particles by cloth bag duster for using it as raw material.

Description

Technical field [0001] The invention belongs to the field of environmental protection methods; specifically, it belongs to the field of municipal waste incineration slag treatment methods. Background technique [0002] Garbage incineration is one of the effective methods for the harmless treatment of urban domestic waste, but the proportion of organic matter in urban domestic waste in my country is small, and the proportion of inorganic matter is relatively large, of which sand and soil account for 20% of the total waste. 30%. Therefore, the amount of slag produced after incineration is large, accounting for 15% to 30% of the amount of garbage incinerated. If a large amount of slag is piled up or landfilled, it will occupy a large amount of land, and will also generate secondary pollution such as dust, which will not achieve the goal of complete recycling, harmless and reduced waste disposal. [0003] In recent years, the research on comprehens...

Claims

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Application Information

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IPC IPC(8): B09B5/00B02C17/00B02C23/12B07B15/00B03C1/30B07B11/04
Inventor 高亮张景辉高建东郭冏杨忆楠郭谦赵恩健纪涛张国立
Owner TIANJIN TEDA ENVIRONMENTAL PROTECTION
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