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Composite filling material for exciting curing of coal gangue, and preparation method thereof

A technology for filling materials and coal gangue, which is applied in the field of composite filling materials that stimulate coal gangue solidification and its preparation, can solve the problems of low utilization rate of gangue, labor-intensive cleaning, high pumping resistance, etc., and achieve adjustable and controllable filling parameters , improve utilization efficiency, and achieve a high degree of automation

Active Publication Date: 2022-01-21
CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the water consumption is small, the material density is high, the pumping resistance is large, the pipeline is easy to block, it takes manual cleaning, and the construction period is delayed
When the water consumption is large, the setting time is long and the strength is low
At the same time, coal gangue paste filling still has the disadvantages of large amount of cement, high cost and low utilization rate of gangue

Method used

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  • Composite filling material for exciting curing of coal gangue, and preparation method thereof
  • Composite filling material for exciting curing of coal gangue, and preparation method thereof
  • Composite filling material for exciting curing of coal gangue, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The composite filling material that stimulates coal gangue solidification described in this example has a water-solid ratio of 1:1+powder-solid ratio of 2:1+powder-particle ratio of 1:1. Mass composition, wherein in parts by mass, material A gangue slurry: 2 parts of gangue particles, 2 parts of gangue powder, 1 part of composite excitation curing agent A, 1 part of water; material B gangue slurry: 2 parts of gangue particles, 2 parts of

[0040] Gangue powder, 1 part of compound excitation curing agent B, 1 part of water.

[0041] Based on the preparation method of the composite filling material that stimulates coal gangue solidification, the steps are as follows:

[0042] (1) Coal gangue is crushed in two stages to generate gangue particles with a particle size of 0.5-10mm;

[0043] (2) Get part of the gangue particles and further generate gangue powder through ball mill grinding;

[0044] (3) Get 2 parts of gangue granules, 2 parts of gangue powder, 1 part of compo...

Embodiment 2

[0048] The composite filling material that stimulates coal gangue solidification described in this embodiment has a water-solid ratio of 2:1+powder-solid ratio of 1:1+powder-to-particle ratio of 2:1, and the formula is as follows: first material gangue slurry and second material gangue slurry Mass composition, wherein in parts by mass, material A gangue slurry: 1 part of gangue particles, 2 parts of gangue powder, 2 parts of composite excitation curing agent A, 4 parts of water; material B gangue slurry: 1 part of gangue particles, 2 parts of

[0049] Gangue powder, 2 parts of compound excitation curing agent B, 4 parts of water.

[0050] Based on the preparation method of the composite filling material that stimulates coal gangue solidification, the steps are as follows:

[0051] (1) Coal gangue is crushed in two stages to generate gangue particles with a particle size of 0.5-10mm;

[0052] (2) Get part of the gangue particles and further generate gangue powder through ball ...

Embodiment 3

[0057] The composite filling material that stimulates coal gangue solidification described in this embodiment has a water-solid ratio of 4:1+powder-solid ratio of 1:1+powder-particle ratio of 3:1, and the formula is as follows: Composition, wherein in terms of parts by mass, A material gangue slurry: 1 part of gangue particles, 3 parts of gangue powder, 3 parts of composite excitation curing agent A, 12 parts of water; B material gangue slurry: 1 part of gangue particles, 3 parts of gangue powder , 3 parts of compound excitation curing agent B material, 12 parts of water.

[0058] Based on the preparation method of the composite filling material that stimulates coal gangue solidification, the steps are as follows:

[0059] (1) Coal gangue is crushed in two stages to generate gangue particles with a particle size of 0.5-10mm;

[0060] (2) Get part of the gangue particles and further generate gangue powder through ball mill grinding;

[0061] (3) Get 1 part of gangue granules,...

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Abstract

The invention relates to a composite filling material for exciting curing of coal gangue, and a preparation method thereof. The raw materials of the composite filling material comprise material A gangue slurry and material B gangue slurry with equal mass, the material A gangue slurry comprises gangue particles, gangue powder, a composite exciting curing agent A material and water; the material B gangue slurry comprises gangue particles, gangue powder, a composite excitation curing agent material B and water; and the first composite excitation curing agent material is composed of SiO2 and a first material additive, and the second composite excitation curing agent material is composed of CaO and a second material additive. According to the coal gangue curing agent filling material suitable for goaf filling provided by the invention, the curing agent and the coal gangue powder are subjected to synergistic reaction to excite the activity of the coal gangue, so that the physical and mechanical properties of the filling material are improved while full utilization of the coal gangue is realized, and the defects that a traditional coal gangue filling material is limited in pumping performance, uncontrollable in setting time and insufficient in coal gangue utilization are overcome.

Description

technical field [0001] The invention relates to the technical field of coal gangue resource utilization, in particular to a composite filling material that stimulates coal gangue to solidify and a preparation method thereof. Background technique [0002] Coal gangue is a rock with a lower carbon content and is harder than coal mixed in coal seams. It is a general term for solid waste discharged during coal mining and coal washing. As a large coal mining country, my country's coal gangue emissions account for about 10% of the coal output in the year, and the emissions are huge. A large amount of coal gangue discharged not only occupies a large amount of land and farmland, but also pollutes the environment. It is imperative to reduce the emission of coal gangue and realize its harmless and resourceful treatment. Among them, combining coal gangue with cementitious materials and applying it to the engineering field is an important direction for the harmless and resourceful tre...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/006C04B2111/00017C04B2111/00724C04B18/12C04B14/06C04B22/064C04B2103/0068C04B2103/12C04B2103/22C04B2103/408Y02W30/91
Inventor 柏夏陈艳
Owner CHINA MINING & CIVIL NEW MATERIAL SCI & TECH LTD
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