A kind of domestic sludge ash-based fire zone roadway blocking material and preparation method thereof

Abstract

The invention relates to the field of coal mine construction, in particular to a domestic sludge ash-based fire region roadway blocking material and a preparation method thereof. The blocking materialis prepared from the following raw materials of portland cement clinker, aluminate cement, domestic sludge ash, flint clay, polycarboxylate superplasticizers, naphthalene water reducers, triethanolamine, calcium chloride, dihydrate gypsum, aluminum sulfate, polypropylene fiber, short cut basalt fiber and water. The blocking material has high temperature resistant performance; through the couplingeffect of three kinds of ingredients of aluminate cement, flint clay aggregate and basalt fiber, the sealed material still has certain pressure-resistant and anti-cracking performance under the effect of coal mien fire region high-temperature air flow; the harmful gas can be effectively isolated; the fast sealing and blocking is realized; the safety of coal mine workers and rescue personnel can be ensured. The preparation process of the blocking material is simple; in the preparation process, dry materials only need to be proportionally mixed and fed to an underground position; then, a solution mixed with additives is added for uniform stirring; a single pipe is used for conveyance; the conveying process is greatly simplified.

Description

Technical field

[0001] The invention relates to the field of coal mine construction, in particular to a roadway plugging material in a domestic sludge ash-based fire zone and a preparation method thereof. Background technique

[0002] With the continuous increase of the urban population in our country, the discharge of urban domestic sewage is increasing. As the solid waste in the sewage treatment process, the output of sludge has also increased sharply, resulting in the increasingly serious problem of sludge disposal. Most of the sludge is organic humus, and it also contains a large number of pathogens, microorganisms, copper, lead, zinc, mercury and other heavy metal harmful components, and even a small amount of trace elements and difficult-to-degrade organic pollutants. If not handled properly, it will be serious Destroy the ecological environment. At present, the domestic sludge treatment in my country is mostly stacked or landfilled. This treatment method takes up a lot of...

Examples

Embodiment 1

[0036] A roadway plugging material for domestic sludge ash-based fire zone, including the following raw materials by weight: 20 parts of Portland cement clinker, 15 parts of aluminate cement, 15 parts of domestic sludge ash, 55 parts of coke gems, and 0.06 part of carboxylic acid water reducing agent, 0.1 part of naphthalene water reducing agent, 0.01 part of triethanolamine, 0.4 part of calcium chloride, 0.6 part of dihydrate gypsum, 0.5 part of aluminum sulfate, 0.06 part of polypropylene fiber, 0.12 part of chopped basalt fiber And 80 parts of water.

[0037] Of which Al in aluminate cement 2 O 3 The content is 50 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium sulfate content ...

Embodiment 2

[0049] A roadway plugging material for domestic sludge ash-based fire zone, comprising the following raw materials in parts by weight: 15 parts of Portland cement clinker, 10 parts of aluminate cement, 20 parts of domestic sludge ash, 60 parts of coke gemstone, poly 0.1 part of carboxylic acid water reducing agent, 0.4 part of naphthalene water reducing agent, 0.015 part of triethanolamine, 0.7 part of calcium chloride, 1 part of dihydrate gypsum, 0.2 part of aluminum sulfate, 0.03 part of polypropylene fiber, 0.06 part of chopped basalt fiber And 100 parts of water.

[0050] Of which Al in aluminate cement 2 O 3 The content is 60 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium su...

Embodiment 3

[0062] A roadway plugging material for domestic sludge ash-based fire zone, comprising the following parts by weight of raw materials: 20 parts of Portland cement clinker, 13 parts of aluminate cement, 18 parts of domestic sludge ash, 53 parts of coke gems, and poly 0.08 parts of carboxylic acid water reducer, 0.25 parts of naphthalene water reducer, 0.08 parts of triethanolamine, 0.6 parts of calcium chloride, 0.8 parts of dihydrate gypsum, 0.3 parts of aluminum sulfate, 0.04 parts of polypropylene fiber, 0.09 parts of chopped basalt fiber And 90 parts of water.

[0063] Of which Al in aluminate cement 2 O 3 The content is 55 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium sulfat...

Technical field

[0001] The invention relates to the field of coal mine construction, in particular to a roadway plugging material in a domestic sludge ash-based fire zone and a preparation method thereof. Background technique

[0002] With the continuous increase of the urban population in our country, the discharge of urban domestic sewage is increasing. As the solid waste in the sewage treatment process, the output of sludge has also increased sharply, resulting in the increasingly serious problem of sludge disposal. Most of the sludge is organic humus, and it also contains a large number of pathogens, microorganisms, copper, lead, zinc, mercury and other heavy metal harmful components, and even a small amount of trace elements and difficult-to-degrade organic pollutants. If not handled properly, it will be serious Destroy the ecological environment. At present, the domestic sludge treatment in my country is mostly stacked or landfilled. This treatment method takes up a lot of...

Examples

Embodiment 1

[0036] A roadway plugging material for domestic sludge ash-based fire zone, including the following raw materials by weight: 20 parts of Portland cement clinker, 15 parts of aluminate cement, 15 parts of domestic sludge ash, 55 parts of coke gems, and 0.06 part of carboxylic acid water reducing agent, 0.1 part of naphthalene water reducing agent, 0.01 part of triethanolamine, 0.4 part of calcium chloride, 0.6 part of dihydrate gypsum, 0.5 part of aluminum sulfate, 0.06 part of polypropylene fiber, 0.12 part of chopped basalt fiber And 80 parts of water.

[0037] Of which Al in aluminate cement 2 O 3 The content is 50 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium sulfate content ...

Embodiment 2

[0049] A roadway plugging material for domestic sludge ash-based fire zone, comprising the following raw materials in parts by weight: 15 parts of Portland cement clinker, 10 parts of aluminate cement, 20 parts of domestic sludge ash, 60 parts of coke gemstone, poly 0.1 part of carboxylic acid water reducing agent, 0.4 part of naphthalene water reducing agent, 0.015 part of triethanolamine, 0.7 part of calcium chloride, 1 part of dihydrate gypsum, 0.2 part of aluminum sulfate, 0.03 part of polypropylene fiber, 0.06 part of chopped basalt fiber And 100 parts of water.

[0050] Of which Al in aluminate cement 2 O 3 The content is 60 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium su...

Embodiment 3

[0062] A roadway plugging material for domestic sludge ash-based fire zone, comprising the following parts by weight of raw materials: 20 parts of Portland cement clinker, 13 parts of aluminate cement, 18 parts of domestic sludge ash, 53 parts of coke gems, and poly 0.08 parts of carboxylic acid water reducer, 0.25 parts of naphthalene water reducer, 0.08 parts of triethanolamine, 0.6 parts of calcium chloride, 0.8 parts of dihydrate gypsum, 0.3 parts of aluminum sulfate, 0.04 parts of polypropylene fiber, 0.09 parts of chopped basalt fiber And 90 parts of water.

[0063] Of which Al in aluminate cement 2 O 3 The content is 55 wt%, and the specific surface area of ​​aluminate cement is ≥350 m 2 / kg; The polycarboxylic acid water reducing agent is a powdered solid, the water reduction rate is not less than 25%, the bleeding rate ratio is not more than 60%, and the specific surface area is ≥200m 2 / kg; The naphthalene-based water reducing agent is a powdered solid, the sodium sulfat...

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