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High-strength mining expansion filling fireproofing and extinguishing material and application method thereof

A fire-proof and high-strength technology, which is applied in the fields of flame-retardant and fire-fighting, mine filling and airtightness, roadway goaf filling, goaf grouting to prevent fire-fighting, and mining fire-proof material filling. Unsatisfactory compressive strength, low flame retardancy, etc., to achieve the effect of enhancing critical fracture toughness and stability, reducing the possibility of drying shrinkage and cracking, and good integrity

Active Publication Date: 2016-12-14
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These materials either have low flame retardancy, do not meet the requirements of environmental protection, decompose at high temperature, release harmful gases, or have low strength, unsatisfactory compressive strength, and lack of flexibility. Once the stratum is shifted, it will greatly affect the filling. The service life of the material, leading to safety hazards

Method used

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  • High-strength mining expansion filling fireproofing and extinguishing material and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-strength mine-used expansion filling fire-proof material, which includes the following substances in parts by weight: 24 parts of aluminate cement clinker (12 parts of sulphoaluminate cement clinker and 12 parts of high-alumina refractory cement clinker) , 18 parts of Portland cement clinker, 12 parts of active calcium-containing materials (8 parts of water-quenched blast furnace slag and 4 parts of water-quenched steel slag), 9 parts of anhydrite, 8 parts of quicklime, 35 parts of fly ash, 0.2 parts of zinc powder Foaming agent, 0.7 part of sodium chloride and 0.3 part of sodium carbonate, 1 part of aluminum hydroxide, 1.5 parts of sodium tripolyphosphate and an appropriate amount of sodium hydroxide, and the content of the sodium hydroxide makes the pH of the prepared slurry It is between 12-13, wherein, the weight ratio of expansion filling fire extinguishing material to water is 1:1.15.

[0037] Test the high-strength expansion-filled fire-proofing material i...

Embodiment 2

[0043] A high-strength mine-used expansion filling fire-proof material, which includes the following substances in parts by weight: 20 parts of aluminate cement clinker (10 parts of sulphoaluminate cement clinker and 10 parts of high-alumina refractory cement clinker) , 20 parts of Portland cement clinker, 9 parts of active calcium-containing materials (6 parts of water-quenched blast furnace slag and 3 parts of water-quenched steel slag), 7 parts of dihydrate gypsum, 7 parts of quicklime, 32 parts of fly ash, 0.4 parts of zinc Powder foaming agent, 0.4 part of calcium chloride and 0.5 part of sodium sulfate, 1 part of aluminum hydroxide, 2 parts of sodium tripolyphosphate and an appropriate amount of sodium hydroxide, and the content of the sodium hydroxide makes the prepared slurry The pH is between 12-13, and the weight ratio of expansion filling fire-proof material to water is 1:1.2.

[0044] Utilize the test method in the first embodiment to test the performance of its sa...

Embodiment 3

[0046] A high-strength mine-used expansion filling fire-proof material, which includes the following substances in parts by weight: 22 parts of aluminate cement clinker (11 parts of sulphoaluminate cement clinker and 11 parts of high-alumina refractory cement clinker) , 15 parts of Portland cement clinker, 12 parts of active calcium-containing materials (8 parts of water-quenched blast furnace slag and 4 parts of water-quenched steel slag), 5 parts of anhydrite and 3 parts of dihydrate gypsum, 8 parts of quicklime, 30 parts of pulverized coal Ash, 0.6 parts of zinc powder blowing agent, 0.5 parts of sodium chloride, 0.3 parts of sodium sulfate and 0.9 parts of sodium carbonate, 2 parts of aluminum hydroxide, 1.5 parts of sodium tripolyphosphate and an appropriate amount of sodium hydroxide, and the hydroxide The content of sodium makes the pH of the prepared slurry between 12-13, wherein the weight ratio of the expansion filling fire extinguishing material to water is 1:1.25. ...

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Abstract

The invention discloses a high-strength mining expansion filling fireproofing and extinguishing material and an application method thereof. The material comprises the following substances in parts by weight: 16-25 parts of aluminate cement clinker, 12-20 parts of Portland cement clinker, 4-16 parts of active calcic material, 6-15 parts of setting accelerator, 5-10 parts of quicklime, 22-40 parts of fly ash, 0.1-1 part of zinc powder foaming agent, 0.5-2 parts of thickening time control agent, 1-2 parts of aluminum hydroxide, 1-3 parts of dispersing agent and a proper amount of sodium hydroxide. By adding the sodium hydroxide, the pH value of the prepared slurry is 12-13. The material can obviously enhance the compression strength of the filled body, can enhance the critical fracture toughness and stability of the filled body, implements long-distance line delivery, and also implement quick filling and high-efficiency fireproofing and extinguishment.

Description

technical field [0001] The invention belongs to the technical field of mine fire-proof material filling, and in particular relates to a high-strength mining expansion filling fire-proof material, which is mainly used for mine filling and sealing, flame-retardant fire extinguishing, roadway goaf filling, goaf grouting fire-proof fire extinguishing technology field. Background technique [0002] The coal industry is the basic industry of our country, and its healthy, stable and sustainable development is a major issue related to the national energy security. However, with the continuous increase of coal production in my country, the increase of newly built and expanded mines and the increase of mining intensity and mining depth, the problem of mine fire prevention and extinguishing is particularly prominent. Due to the complex natural conditions of coal mines, there are a wide range and a large number of mines that spontaneously ignite, and according to incomplete statistics,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06E21F5/00
CPCC04B28/065C04B2111/40E21F5/00C04B7/02C04B7/32C04B18/142C04B22/143C04B22/064C04B18/08C04B22/04C04B22/124C04B22/10C04B22/06C04B22/16C04B22/062C04B38/02C04B22/147
Inventor 黄玉诚
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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