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Mine paste filling aggregate prepared from building waste materials and preparation method of mine paste filling aggregate

A construction waste and paste filling technology is applied in the field of mining paste filling aggregate to achieve the effects of improving the working environment on the ground and underground, increasing the recovery rate and saving energy

Inactive Publication Date: 2012-11-14
滕州市级翔(集团)级索煤矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method to overcome the shortcomings of the existing production process of excavating natural sand and gravel as filling materials, and to use construction waste to prepare mining paste filling aggregates and a preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] As an example, the present invention selects construction waste as raw material to prepare mining paste filling aggregate. The filling aggregate includes the following proportions, and its formula by mass is:

[0018] Construction waste: 48%;

[0019] Binder: 6%;

[0020] Fly ash: 24%;

[0021] Additives: 1%;

[0022] Water: 21%;

[0023] The total amount thereof satisfies 100%. The quality requirements for each component material are as follows:

[0024] Construction waste: the particle size distribution is between 0.05mm and 25mm, and the mud content is less than 10%;

[0025] Cement: Ordinary Portland cement. According to the above construction waste aggregate production process, the mining filling paste filling aggregate is produced.

[0026] According to the above ratio of materials, the performance of the filling body can reach:

[0027] Compressive strength: 7.5Mpa (28 days)

[0028] Slump: 18~26cm

Embodiment 2

[0030] As an example, the present invention selects construction waste as raw material to prepare mining paste filling aggregate. The filling aggregate includes the following proportions, and its formula by mass is:

[0031] Construction waste: 41%;

[0032] Binder: 8%;

[0033] Fly ash: 25%;

[0034] Additives: 1.5%;

[0035] Water: 24.5%;

[0036] The total amount thereof satisfies 100%. The quality requirements for each component material are as follows:

[0037] Construction waste: the particle size distribution is between 0.05mm and 25mm, and the mud content is less than 10%;

[0038] Cement: Ordinary Portland cement. According to the above construction waste aggregate production process, the mining filling paste filling aggregate is produced.

[0039] According to the above ratio of materials, the performance of the filling body can reach:

[0040] Compressive strength: 7.5Mpa (28 days)

[0041] Slump: 15~28cm.

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Abstract

The invention discloses mine paste filling aggregate prepared from building waste materials and a preparation method of the mine paste filling aggregate. The mine paste filling aggregate and the preparation method adopt the following design scheme that the mine paste filling aggregate prepared from building waste materials comprises the following ingredients in percentage by mass: 35 percent to 50 percent of building waste materials, 3 percent to 8 percent of cementing materials, 20 percent to 25 percent of coal ash, 0.5 percent to 1.5 percent of additives and 18 percent to 25 percent of water, wherein the total quantity is 100 percent, and the quality requirements on each composition ingredient are as follows: the grain diameter of the building waste materials is distributed between 0.05mm and 25mm, the mud content is lower than 10 percent, and the cement is ordinary silicate cement. The mine filling paste filling aggregate is manufactured according to the production flow process of the building waste materials. After the materials are prepared according to the proportion, the following performance can be reached: the pressure strength is 7.5MPa (28 days), and the slump is 15 to 28 cm.

Description

technical field [0001] The invention relates to a mining paste filling aggregate, in particular to a mining paste filling aggregate prepared from construction waste and a preparation method thereof, belonging to the technical field of mining paste. Background technique [0002] With the acceleration of my country's urbanization process and the increasing development of small town construction and new rural construction, the number of old city renovation projects is increasing, resulting in a large number of abandoned demolished buildings, such as waste concrete, waste bricks and stones, and waste blocks. etc. These construction wastes have seriously affected the urban ecology and urban environment. In recent years, we have combined the comprehensive utilization of construction waste with coal mine production, through a large number of tests: construction waste (or coal gangue, mine tailings, etc.) We have invented the preparation method of mining paste slurry aggregate by us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16
CPCY02W30/91
Inventor 董洪青
Owner 滕州市级翔(集团)级索煤矿
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