Mine filling material, preparation device and preparation method of mine filling material, cementing agent slurry for mine filling

Abstract

The invention discloses a mine filling material, a preparation device and a preparation method of the mine filling material, cementing agent slurry for mine filling, and belongs to the technical fieldof mining engineering and building materials. The cementing agent slurry for mine filling is formed by mixing premixed powder of silicon aluminum and calcium raw materials and titanium gypsum slurry;concretely, the cementing agent slurry dry basis is prepared from the following ingredients in percentage by weight: 0 to 15 percent of fly ash, 15 to 70 percent of ore slag micro powder, 0 to 15 percent of steel slag micro powder, 5 to 20 percent of cement and 25 to 50 percent of industrial byproduct titanium gypsum. The mine filling material is formed by mixing tailings slurry formed by full tailing sand and water and the cementing agent slurry through stirring and mixing. When the technical scheme is used, the intensity of a mine filling body can be effectively improved; the effective resource utilization on industrial waste residue, particularly titanium gypsum is realized; the preparation process of the mine filling cementing material is simple; the filling of the full tailing sand can be realized.

Description

technical field [0001] The invention belongs to the technical field of mining engineering and building materials, and in particular relates to a mine filling material, a preparation device and a preparation method thereof, and a cementing agent slurry for mine filling. Background technique [0002] The filling mining method has the advantages of small loss rate, low dilution rate and high safety, and it is also a mining method that can effectively control mine ground pressure activities. With the development of filling mining technology, especially cemented filling mining technology, many complex technical problems in mines have been solved well. It has played a huge role in reducing the dilution rate and loss rate, preventing internal fires, slowing down rockbursts, and effectively controlling ground pressure activities. [0003] The filling material used in the mining filling method is mainly composed of aggregate and cement. Generally, graded tailings, tailings plus rive...

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Problems solved by technology

For example, the application with the patent application number 201710066513 discloses a titanium gypsum high-performance concrete building material and its preparation method. In this application, the original titanium gypsum is directly added with water to form a slurry, and then the silicon-aluminum raw material powder and calcium Raw material powder and lightweight aggregates are added to the titanium gypsum slurry to make it into a thick slurry with a large gas content, and then through vacuuming, the air bubbles are drawn out and then poured to obtain high mechanical strength. performance, otherwise the water-cement ratio must be greater than 1 to reduce the amount of air bubbles in the mud, which will greatly reduce the strength of the cast product obtained, so the utilization scale of titanium gypsum cannot be increased, and a large amount of accumulated titanium gypsum still affects surroundings

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