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A kind of filling material for phosphate mine with high pumpability and preparation method thereof

A technology for filling materials and phosphate mines, applied in the field of filling materials and its preparation, can solve the problems of low bleeding, poor fluidity, and high bleeding, and achieve the effects of reducing bleeding, reducing costs, and reducing bleeding

Active Publication Date: 2017-12-12
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of poor fluidity and high bleeding of high-strength filling materials, the purpose of the present invention is to provide a high-pumpability, low-bleeding, high-strength and low-filling filling material for phosphate mines. and its preparation method

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  • A kind of filling material for phosphate mine with high pumpability and preparation method thereof
  • A kind of filling material for phosphate mine with high pumpability and preparation method thereof
  • A kind of filling material for phosphate mine with high pumpability and preparation method thereof

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Embodiment Construction

[0024] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.

[0025] See Table 1 for the batching of the embodiment of the filling material according to the present invention, and the water-binder ratio remains unchanged at 0.52.

[0026] The preparation method of the above-mentioned filling material for phosphate mines with high pumpability includes the steps of: pouring the cementitious material, aggregates and additives into the mixing tank, starting the mixer, mixing for 5 seconds, adding water slowly, and finishing adding in 20-30 seconds. Start the mixer and stop stirring for 180±5s to prepare the filling material (mixture) for phosphate mines with high pumpability, which is transported to the goaf through pipelines by pumping equipment for filling.

[0027] In accordance with GB / T17671-1999...

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Abstract

The invention relates to a filling material and a preparation method thereof. A high-pumpability filling material for phosphate mine is characterized by being prepared from a cementing material, aggregate, water and an additive, wherein the mass percent contents of the cementing material, the aggregate and the water are as follows: the cementing material accounts for 10-30%, the aggregate accounts for 60-85%, and the water is as balance; the additive comprises a water reducing agent and an activating agent, wherein the adding amount of the water reducing agent is 0.5-1.5% of the mass of the cementing material, and the adding amount of the activating agent is 5% of the mass of industrial waste residue in the cementing material; the cementing material is prepared from cement, sub-micron ultrafine reactive powder and industrial waste residue, wherein the cement accounts for 40-70% of the mass of the cementing material, the sub-micron ultrafine reactive powder accounts for 15-40% of the mass of the cementing material, and the industrial waste residue accounts for 0-35% of the mass of the cementing material. The filling material has the characteristics of being high in pumpability, low in water segregation amount, high in strength and low in filling cost.

Description

technical field [0001] The invention relates to a filling material and a preparation method thereof, in particular to a filling material for phosphate mines with high pumpability and a preparation method thereof. Background technique [0002] The filling and filling mining method is a kind of artificial support mining method. The filling mining method can be divided into three types according to the filling materials used in mining and the filling transportation method: dry filling method, hydraulic filling method and cemented filling method. Stone, river sand or tailing sand or Gobi aggregates are used as aggregates (occasionally mixed with block stones), and then mixed with inorganic cementitious materials such as cement to form paste or slurry, which is pumped by pipeline or gravity flow The filling delivered to the filling area. Metal mines and coal mines are usually filled with paste. The fluidity of the filling material is very good, but the strength is low (28-day s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00146C04B2111/00724C04B2201/50C04B22/02C04B14/02C04B14/06C04B2103/302C04B2103/0068C04B18/146C04B14/106
Inventor 曹宏杨威安子博王幸荣薛俊李先福方文君李家劲
Owner WUHAN INSTITUTE OF TECHNOLOGY
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