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Control method for spontaneous combustion of coal gangue

A technology for coal gangue and coal gangue concrete, which is applied in the field of coal gangue treatment, can solve the problems of secondary environmental pollution, high treatment cost, inability to effectively isolate air, etc., and achieves the effect of high strength

Pending Publication Date: 2018-12-07
马树立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the treatment of coal gangue in the existing technology costs a lot, on the other hand, it causes secondary pollution to the environment, and the success rate is low. On the other hand, it cannot effectively solve the problems of surface strength and acid-base erosion, and cannot effectively isolate air, rain, etc. The Necessary Conditions for Spontaneous Combustion of Coal Gangue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: a kind of prevention and treatment method of coal gangue spontaneous combustion, comprises the following steps:

[0033] 1. Clear the combustibles in the gangue;

[0034] 2. Coal gangue + fly ash + carbide slag + self-developed high-efficiency fly ash activator, mixed according to the proportion;

[0035] 3. Stir evenly and place it to make gangue concrete;

[0036] 4. Carry out the construction of the formwork, and pour the gangue concrete after the construction is completed;

[0037] 5. Layered pouring is carried out according to the needs, and steel bars are placed between each layer to fix the layers;

[0038] 6. Lay geotextiles to reinforce the wall;

[0039] 7. Beautify the appearance of the built building, such as modeling and greening, plant soil on the geotextile, add water for maintenance, and plant greening in the soil layer.

[0040] The components of the self-developed high-efficiency fly ash activator are as follows by mass:

[0041] 7...

Embodiment 2

[0042] Embodiment two: a kind of prevention and treatment method of coal gangue spontaneous combustion, comprises the following steps:

[0043] 1. Clear the combustibles in the gangue;

[0044] 2. Coal gangue + fly ash + carbide slag + self-developed high-efficiency fly ash activator, mixed according to the proportion;

[0045] 3. Stir evenly and place it to make gangue concrete;

[0046] 4. Carry out the construction of the formwork, and pour the gangue concrete after the construction is completed;

[0047] 5. Layered pouring is carried out according to the needs, and steel bars are placed between each layer to fix the layers;

[0048] 6. Lay geotextiles to reinforce the wall;

[0049] 7. Beautify the appearance of the built buildings, such as modeling and greening, using artificial turf to directly transplant to geotextiles, and the greening results are remarkable.

[0050] The components of the self-developed high-efficiency fly ash activator are as follows by mass:

...

Embodiment 3

[0052] Embodiment three: a kind of prevention method of coal gangue spontaneous combustion, comprises the following steps:

[0053] 1. Clear the combustibles in the gangue;

[0054] 2. Coal gangue + fly ash + carbide slag + self-developed high-efficiency fly ash activator, mixed according to the proportion;

[0055] 3. Stir evenly and place it to make gangue concrete;

[0056] 4. Carry out the construction of the formwork, and the shape refers to the terraced fields. After the construction is completed, it is poured with gangue concrete;

[0057] 5. Carry out pouring as needed, and remove the formwork after pouring;

[0058] 6. Lay geotextiles to reinforce the wall;

[0059] 7. For the treatment of coal gangue and slag piles, the method of layering and retreating is adopted, and green belts are reserved at the platforms of each layer. While the slag piles are sealed, the most stable stacking structure is guaranteed, and at the same time, a terraced field is created. Landsc...

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Abstract

The invention discloses a control method for spontaneous combustion of coal gangue. The method includes the following steps: step (1) removing combustible materials inside the coal gangue; step (2) mixing coal gangue + fly ash + calcium carbide slag + independent research and development high-efficiency fly ash activator according to a proportion; step (3) uniformly stirring and placing to make coal gangue concrete; step (4) constructing a template, and pouring by utilizing the coal gangue concrete after completion of the construction; step (5) performing layered pouring as needed, placing reinforcing steel bars between each of layers to perform fixation between the layers; step (6) laying geotextile cloth to reinforce a wall body; and step (7) beautifying appearance of a constructed building, such as moulding and greening. Compared with the prior art, the control method has the advantages of achieving high strength and acid and alkali corrosion resistance, effective isolating necessary conditions for the spontaneous combustion of the coal gangue such as air, rainwater, and the like, completely solving the problems of the spontaneous combustion and dust of the coal gangue, truly achieve treatment of industrial solid waste with industrial solid waste, and being of great significance to environmental management of mines in China.

Description

technical field [0001] The invention relates to the field of coal gangue treatment, in particular to a method for preventing spontaneous combustion of coal gangue. Background technique [0002] Coal gangue is solid waste discharged during coal mining and washing process. Since gangue contains a large amount of combustion-promoting and combustible substances such as pyrite and coal, it tends to spontaneously ignite after long-term accumulation under suitable environmental conditions. And produce a large amount of poisonous and harmful gases such as SO2, CO, H2S, CO2, seriously affect the environment of the mining area and the safety of people's life and property. On the one hand, the treatment of coal gangue in the existing technology costs a lot, on the other hand, it causes secondary pollution to the environment, and the success rate is low. On the other hand, it cannot effectively solve the problems of surface strength and acid-base erosion, and cannot effectively isolate ...

Claims

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Application Information

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IPC IPC(8): C04B28/10C04B18/12C04B18/08E04G21/02
CPCE04G21/02C04B18/08C04B18/12C04B28/10C04B22/145C04B22/062C04B22/147C04B22/064C04B22/0006Y02W30/91
Inventor 马树立
Owner 马树立
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