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Preparation method of water-rich filling material for mine

A filling material and water-rich technology, which is applied in the field of mining filling materials, can solve the problems of reduced strength, poor weathering resistance and stability, and fast weathering water loss, and achieves improved strength, good water retention performance and strength. Adsorbent effect

Active Publication Date: 2019-01-11
义乌市君胜科技有限公司
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Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problems that high-water material concretions are placed in an open environment, their weathering and dehydration speed is relatively fast, their strength is reduced, and their weathering resistance and stability are poor. Preparation method of water filling material

Method used

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  • Preparation method of water-rich filling material for mine

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Embodiment Construction

[0019] In terms of parts by weight, weigh 60-80 parts of sulfoaluminate cement, 5-10 parts of retarder, 10-20 parts of phosphogypsum, 7-12 parts of slag, 1-6 parts of accelerator, 8- 12 parts of diatomite, 0.1-0.4 parts of polyacrylamide, 1-3 parts of polypropylene fiber, 0.1-1 part of alkaline activator, 0.1-1 part of foaming agent, 0.1-1 part of foam stabilizer, 80-100 1 part deionized water, mix sulfoaluminate cement and retarder evenly to obtain component A, mix phosphogypsum, slag, coagulant, diatomaceous earth, polyacrylamide, polypropylene fiber, alkaline activator, hair Mix the foam agent and the foam stabilizer, stir at a stirring rate of 1000-3000r / min and a temperature of 30-50°C for 2-4 hours, cool to room temperature to obtain a mixture, add deionized water and stir rapidly at room temperature for 3 minutes, and mix well to obtain B Components: Mix component A and component B uniformly at a mass ratio of 1:1, pump with a grouting pump, and pour into the filling ba...

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Abstract

The invention relates to a preparation method of a water-rich filling material for a mine and belongs to the technical field of filling materials for mines. The water holding capacity of diatomite isimproved by adopting phosphogypsum and polyacrylamide, tricalcium aluminate hydrate and dehydrate phosphogypsum react to generate ettringite with higher strength, a hydration product generated by a hydration reaction forms a layer of spatial network structure on the surface of the phosphogypsum, the generated calcium silicate hydrate gel and ettringite are gradually increased with the hydration reaction, and thus, the formed network structure is more compact; a great number of hydroxyls and hydrogen bonds exist on the surface of diatomite, so that the adsorbability, surface activity and acidity are relatively good; and acylamino groups of polyacrylamide can be affiliated and adsorbed with various matters to form the hydrogen bonds, so that a relatively strong adhesion effect can be generated between two particles. The water-rich filling material prepared by using the preparation method has good water holding property and strength, and a great deal of unconjugated water contained in a filling body cannot be seeped, so that the long-term stability of the filling body is guaranteed.

Description

technical field [0001] The invention relates to a method for preparing a mine-used water-rich filling material, belonging to the technical field of mine-used filling materials. Background technique [0002] Water-rich filling materials have attracted much attention because of their high water-solid ratio, good fluidity and low cost. At the same time, due to its high water-solid ratio, the stability of the filling body is poor, which affects its popularization and application. Because there are a large amount of ettringite crystals and unbound water inside the hardened body, the equilibrium conditions of the filling body will change after the load is applied, resulting in the instability and destruction of the hardened body. [0003] According to the different filling materials, the filling methods include gangue filling, water-sand filling and paste filling, etc. These filling mining technologies all have the disadvantages of complex filling process, slow filling speed and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/10
CPCC04B28/143C04B2111/00724C04B7/323C04B18/141C04B14/08C04B24/2652C04B16/0633C04B2103/12C04B2103/22C04B2103/42C04B24/085C04B24/383C04B22/062C04B38/10C04B22/064
Inventor 高阳张鑫李静
Owner 义乌市君胜科技有限公司
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