Mining high-water high-strength filling material and preparation method thereof

A filling material and high-strength technology, applied in the field of mining materials, can solve the problems of high cost of filling materials, cumbersome construction procedures, high compressive strength, avoid environmental pollution and health hazards of construction workers, reduce condensation time, The effect of high compressive strength

Inactive Publication Date: 2021-01-22
渭南陕煤启辰科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-water and high-strength filling material for mines and its preparation method to solve the problems of existing filling materials such as high cost, slow solidification speed, low strength, and cumbersome construction procedures. The time can be adjusted from ten minutes to several hours, and the advantage of high compressive strength

Method used

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  • Mining high-water high-strength filling material and preparation method thereof
  • Mining high-water high-strength filling material and preparation method thereof
  • Mining high-water high-strength filling material and preparation method thereof

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preparation example Construction

[0025] A method for preparing a high-water and high-strength filling material for mines is specifically as follows: the raw materials of the A component and the B component are mixed in proportion, stirred evenly, packaged and stored separately, and the filling material is obtained.

[0026] Correspondingly, the present invention also provides the preparation method of described composite additive:

[0027] (1) 20-70 parts of aluminum sulfate, 2-10 parts of sodium metaaluminate, and 2-10 parts of limestone are mixed and ball-milled to an average particle size of 40 μm powder,

[0028] (2) Add 5-20 parts of alkanolamine to the reactor, stir the powder in (1) and heat it in a water bath until uniform, the heating temperature is 50-60°C, then cool to room temperature, add 2-10 parts of dispersant Continue to stir evenly

Embodiment 1

[0031] Mix and ball mill 60 parts of aluminum sulfate, 10 parts of sodium metaaluminate, and 8 parts of limestone to 40 μm powder for later use, add 20 parts of triethanolamine to the reaction kettle, mix and stir the prepared powder at 50°C, cool to room temperature, add 2 parts of hydroxypropyl methylcellulose were stirred evenly to obtain a composite additive.

[0032] Then, use the above-mentioned product composite additives to prepare mining high-water and high-strength filling materials:

[0033] Weigh A component by mass: 63 parts of sulfoaluminate cement, 10 parts of fly ash, 5 parts of sodium bentonite, 1 part of sodium gluconate, 1 part of magnesium aluminum silicate; B component: hemihydrate gypsum 5 parts, quicklime 2 parts, kaolin 5 parts, quartz powder 5 parts, composite additive 3 parts.

[0034] The raw materials in the above-mentioned components A and B are mixed in proportion and stirred evenly to obtain the A material and the B material of the filling mater...

Embodiment 2

[0038] Mix and ball mill 70 parts of aluminum sulfate, 3 parts of sodium metaaluminate and 2 parts of limestone to 40 μm powder for later use, add 15 parts of triisopropanolamine to the reaction kettle, mix and stir the prepared powder at 55°C, and cool to At room temperature, add 5 parts of hydroxymethylmethylcellulose and 5 parts of carboxymethylcellulose, and continue to stir evenly to obtain a composite additive.

[0039] Then, use the above-mentioned product composite additives to prepare mining high-water and high-strength filling materials:

[0040] Weigh A component by mass: 50 parts of sulfoaluminate cement, 5 parts of fly ash, 10 parts of sodium bentonite, 2 parts of tartaric acid, 3 parts of polyacrylamide; B component: 8 parts of dihydrate gypsum, 3 parts of quicklime, 1 part of kaolin, 8 parts of quartz powder, and 10 parts of compound additives.

[0041] The raw materials in the above-mentioned components A and B are mixed in proportion and stirred evenly to obt...

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Abstract

The invention discloses a mining high-water high-strength filling material and a preparation method thereof. The mining high-water high-strength filling material is prepared from, by mass, a componentA and a component B. The component A includes, by mass, 50-70 parts of sulphoaluminate cement, 5-10 parts of fly ash, 1-10 parts of sodium bentonite, 1-5 parts of retarder and 1-5 parts of suspendingagent; and the component B includes: 5-10 parts of gypsum powder, 2-5 parts of quick lime, 1-5 parts of kaolin, 5-30 parts of quartz powder and 1-10 parts of a composite additive; and the raw materials of the component A and the component B are mixed in proportion and uniformly stirred to obtain the mining high-water-content high-strength filling material. The prepared material has the advantagesthat the setting time can be adjusted from ten minutes to several hours, and the compressive strength is high.

Description

technical field [0001] The invention relates to the technical field of mine materials, in particular to a high-water and high-strength filling material used in underground coal mines and a preparation method thereof. Background technique [0002] my country is rich in coal resources. With the continuous increase of coal mining, environmental problems such as surface subsidence and mine gas content surge are becoming more and more prominent. and other areas are treated with filling materials to ensure the safe production of coal mines. [0003] The existing filling materials include inorganic filling materials and organic filling materials. Among them, inorganic filling materials are low in cost and easy to obtain raw materials, but their application is limited due to their slow solidification speed and low strength; organic filling materials have the advantages of high filling efficiency and high strength, but the material reaction temperature is high and the cost is high I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B2201/50C04B2111/00724C04B18/08C04B14/104C04B2103/22C04B22/08C04B7/32C04B7/34C04B14/106C04B14/06C04B22/148C04B24/122C04B24/383C04B24/2652C04B24/16
Inventor 赵腾飞耿耀强梁前李贤良安秀煜张元振
Owner 渭南陕煤启辰科技有限公司
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