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Covering flame retardant layer for preventing fire and preventing pollution of natural coal gangue dump

A flame retardant layer, gangue mountain technology, applied in ecological and solid waste disposal and utilization, environmental fields, can solve problems such as river silting, dust generation, air pollution and so on

Inactive Publication Date: 2013-01-16
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere. If it is discharged into the water system, it will cause river silting

Method used

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  • Covering flame retardant layer for preventing fire and preventing pollution of natural coal gangue dump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: choose silty clay single material as covering flame retardant layer, covering layer thickness is 10~20cm;

Embodiment 2

[0031] Embodiment 2: Select silt as a single material as the covering flame-retardant layer, and the thickness of the covering layer is 60-70cm;

Embodiment 3

[0032] Embodiment 3: A single material of fly ash is selected as the covering flame-retardant layer, and the thickness of the covering layer is 110-120cm;

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Abstract

The invention relates to a covering flame retardant layer for preventing fire and preventing pollution of a natural coal gangue dump. The covering flame retardant layer belongs to the technical field of environmental, ecological and solid wastes processing and utilization. The covering flame retardant layer provided by the invention adopts a single material of silty clay, floury soil or fly ash as the covering flame retardant layer, or adopts a mixing material of the silty clay and the fly ash to form the covering flame retardant layer, or adopts the covering flame retardant layer formed by mixing the floury soil and the fly ash; and thickness of the covering flame retardant layer is respectively 10 to 20cm, 60 to 70cm, over 110cm, 15 to 20cm or 70 to 80cm. According to the covering flame retardant layer for preventing the fire and preventing the pollution of the natural coal gangue dump provided by the invention, the flame retardant layer is covered on the surface of the natural coal gangue dump, so that a dual purpose of preventing the fire and preventing the pollution can be achieved, and a basis is provided for greening a coal gangue dump.

Description

technical field [0001] The invention belongs to the technical field of environment, ecology and solid waste disposal and utilization, and in particular relates to a technical method for fire prevention and pollution prevention of coal gangue hills. Background technique [0002] Coal gangue is the solid waste discharged during the coal mining process and coal washing process, mainly including the excavation gangue during the roadway excavation process, the gangue extracted from the roof, floor and interlayer during the mining process, and the gangue picked out during the coal washing process. Restricted by the nature of resources, economic and technical conditions, and market changes, the comprehensive utilization rate of coal gangue in China is less than 30%. The most common treatment method for coal gangue is to pile waste gangue on the ground to form a gangue hill. Because coal gangue contains sulfides, it is very easy to oxidize and spontaneously ignite, which in turn tri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00
Inventor 胡振琪高杨陈胜华张雷
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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