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A mine-used inorganic ultra-fine foam filling material and its preparation method and use method

A kind of filling material and inorganic technology, which is applied in the field of inorganic ultra-fine foaming filling material for mining and its preparation, can solve the problems of coal mine production safety hazards, unfavorable coal mine production, and poor conveying performance, and achieve good conveyability and injection The effect of high reliability, low cost and less equipment

Active Publication Date: 2020-01-10
ANHUI JIATAI COAL MINING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The polyurethane polymer filling materials currently used in coal mines have poor flame retardancy and high reaction temperature, and will bring great safety hazards to coal mine production
The cement-based inorganic filling materials are generally prepared from cement, fly ash, coal gangue, etc., which have poor conveying performance, slow solidification, low strength and slow growth, which is not conducive to the needs of coal mine production.

Method used

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  • A mine-used inorganic ultra-fine foam filling material and its preparation method and use method

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Effect test

Embodiment l

[0029] An inorganic ultra-fine foam filling material for mining, which is composed of the following raw materials in parts by weight: 15 parts of sulfoaluminate cement, 37 parts of bentonite, 7 parts of perlite, 36 parts of fly ash, 4.5 parts of foaming agent and 0.5 part of water agent, the foaming agent is vegetable protein foaming agent, and the water reducer is calcium lignosulfonate.

[0030] The preparation method of the inorganic ultra-fine foam filling material for mines described in this embodiment includes the following steps: prepare the raw materials according to the proportion, respectively mix sulphoaluminate cement, bentonite, perlite, fly ash, foaming agent and reducing The water preparation is finely ground, and the particle size range of each raw material is 40 μm to reach more than 95%, and then the raw materials are mixed evenly to obtain a uniformly dispersed composite powder product, which can be repacked; in order to speed up the mixing efficiency, the mi...

Embodiment 2

[0033] An inorganic ultra-fine foam filling material for mining is composed of the following raw materials in parts by weight: 12 parts of sulfoaluminate cement, 37 parts of bentonite, 5 parts of perlite, 40 parts of fly ash, 5 parts of foaming agent and 1 part of water agent, the foaming agent is vegetable protein foaming agent, and the water reducer is calcium lignosulfonate.

[0034] The preparation method of the inorganic ultra-fine foam filling material for mines described in this embodiment includes the following steps: prepare the raw materials according to the proportion, respectively mix sulphoaluminate cement, bentonite, perlite, fly ash, foaming agent and reducing The water preparation is finely ground, and the particle size range of each raw material is 40 μm to reach more than 95%, and then the raw materials are mixed evenly to obtain a uniformly dispersed composite powder product, which can be repacked; in order to speed up the mixing efficiency, the mixing is in ...

Embodiment 3

[0037] An inorganic ultra-fine foam filling material for mining, which is composed of the following raw materials in parts by weight: 18 parts of sulfoaluminate cement, 40 parts of bentonite, 5 parts of perlite, 30 parts of fly ash, 6.7 parts of foaming agent and 0.3 part of water agent, the foaming agent is an animal protein foaming agent, and the water reducer is calcium lignosulfonate.

[0038] The preparation method of the inorganic ultrafine foam filling material for mining described in this embodiment is the same as that in Embodiment 1.

[0039] The method of using the inorganic ultrafine foam filling material for mines described in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention provides a mineral inorganic superfine foamed filling material. The mineral inorganic superfine foamed filling material is prepared from the following raw materials in parts by weight: 8 to 18 parts of sulphoaluminate cement, 25 to 40 parts of bentonite, 3 to 10 parts of pearlite, 30 to 45 parts of fly ash, 3 to 8 parts of a foaming agent and 0.3 to 1 part of a water reducing agent. The mineral inorganic superfine foamed filling material provided by the invention is used for reinforcing coal mine crushed gangues and loose coal-rock masses and filling a goaf, a roof falling zone and a roadside, and has the characteristics of capability of pumping in a long distance, rapid condensation, uneasiness of cracking, greenness and environment friendliness. The invention further provides a preparation method and an application method of the mineral inorganic superfine foamed filling material.

Description

technical field [0001] The invention belongs to the technical field of filling in the mining process of coal mines, and in particular relates to a mine-used inorganic ultrafine foam filling material and its preparation method and application method. Background technique [0002] my country is rich in coal resources. Coal is the main energy source in our country and occupies a dominant position in the energy structure. The healthy, stable and sustainable development of the coal industry is a major issue related to national energy security. [0003] The polyurethane polymer filling materials currently used in coal mines have poor flame retardancy and high reaction temperature, and will bring great safety hazards to coal mine production. Cement-based inorganic filling materials are generally prepared from cement, fly ash, coal gangue, etc., which have poor conveying performance, slow solidification, low strength and slow growth, which is not conducive to the needs of coal mine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/06C04B14/10C04B14/18C04B18/08C04B24/14
CPCC04B28/06C04B38/10C04B2201/50C04B14/104C04B14/18C04B18/08C04B24/14C04B24/18Y02W30/91
Inventor 莫维永
Owner ANHUI JIATAI COAL MINING TECH
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