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

A mine filling and cementing agent technology, which is applied to clay preparation devices, chemical instruments and methods, filling materials, etc., can solve the problems of titanium gypsum affecting the environment, the use scale of titanium gypsum cannot be increased, and its strength is reduced, achieving a significant environmental protection effect , Realize the effect of rational recycling and low production cost

Inactive Publication Date: 2019-01-25
深圳市颐泰中和科技有限公司
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  • Abstract
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  • Application Information

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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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Cementing agent slurry made of original industrial by-product titanium gypsum, fly ash, steel slag, slag, cement and water, and tailings slurry composed of whole tailings sand and water are mixed together to form tailings cemented filling material The slurry, in which the whole tailings sand is used as the filling aggregate, the composition of the tailings cemented filling material slurry and its cementitious slurry is shown in Table 1.

[0042] In this example, the industrial by-product titanium gypsum is the residual sludge after acid water treatment of titanium dioxide processing enterprises. After pressure filtration, the water content is 70%, and the main component is CaSO 4 .2H 2 O; Steel slag is converter slag with an alkalinity coefficient of 2. After hot slag splashing, magnetic separation, crushing, ball milling, iron removal and RO phase, the active steel slag fine powder obtained has a specific surface area of ​​410m 2 / kg; the specific surface area of ​​sl...

Embodiment 2

[0058] Cementing agent slurry made of original industrial by-product titanium gypsum, fly ash, steel slag, slag, cement and water, and tailings slurry composed of whole tailings sand and water are mixed together to form tailings cemented filling material The slurry, in which the whole tailings sand is used as the filling aggregate, and the composition of the tailings cemented filling material slurry is shown in Table 1.

[0059] Among them, the industrial by-product titanium gypsum is the remaining sludge after acid water treatment of titanium dioxide processing enterprises. After pressure filtration, the water content is 80%, and the main component is CaSO 4 .2H 2O; Steel slag is the converter slag whose alkalinity coefficient is 2 in the steel mill. After hot slag splashing, magnetic separation, crushing, roller milling, iron removal and RO phase, the steel slag fine powder obtained is the blast furnace water-quenched slag, powder The coal ash is Class III fly ash, and the ...

Embodiment 3～ Embodiment 5

[0066] The composition and mass ratio of the mine filling material and its filling cement slurry in Examples 3 to 5 are shown in Table 1. The preparation device structure and preparation process of the mine filling material are the same as in Example 1. Since different regions have different strength requirements for the filling body during mine filling, it can be seen from Table 1 that the optimal design of the component distribution ratio of each component in the cement and the tail ratio of the cement can meet the requirements of the filling body in different regions. performance requirements.

[0067] The composition and mass ratio of mine filling materials and cement slurry for filling in Table 1 Example 1-5

[0068]

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E21F15/00B28C9/02C04B111/70
CPCC04B28/142B28C9/02C04B2111/00017C04B2111/00146C04B2111/00724C04B2111/70C04B2201/50E21F15/005C04B7/00C04B18/141C04B18/142C04B18/08
Inventor 樊传刚鲁廷桂樊曦张磊高元宝汪宗文刘义波姜邵军
Owner 深圳市颐泰中和科技有限公司
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