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Preparation method of all solid waste and upper flow regime paste-like filling material

A filling material and high fluidity technology, which is applied in the field of cemented filling, can solve the problems of high mine filling cost, restricting the application and development of filling mining technology, and large consumption, so as to realize energy utilization, wide application range of raw materials, and improve utilization rate effect

Inactive Publication Date: 2019-09-13
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of cementitious material (cement), the cost of mine filling is high, and it seriously restricts the application and development of filling mining technology

Method used

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  • Preparation method of all solid waste and upper flow regime paste-like filling material
  • Preparation method of all solid waste and upper flow regime paste-like filling material
  • Preparation method of all solid waste and upper flow regime paste-like filling material

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preparation example Construction

[0043] As an optimization scheme of the embodiment of the present invention, the preparation method of the paste-like filling material includes the following steps: mix the base material and waste water uniformly at a water-cement ratio of 1:1-2 to obtain component A, fill the aggregate, fine The particle size material, regulator and waste water are uniformly mixed according to the water-cement ratio of 1:1~1.5 to obtain B component, and the A component and B component are mechanically mixed at a mass ratio of 1:1~2.5 to obtain a high flow rate. Paste-like filling material, the high-fluidity paste-like filling material is injected into the downhole filling system through the pipeline filling system by gravity or pumping.

[0044] The present invention also provides an all-solid waste high-fluidity paste-like filling material, which is made of two components A and B, wherein component A is composed of the following raw materials in weight percentage: 50% of base material, 50% of...

Embodiment 1

[0059] 1) Mix 15 parts of desulfurized gypsum, 15 parts of aluminum ash, 30 parts of calcium carbide slag, 20 parts of coal gangue, 8 parts of iron tailings and a part of organic waste water to obtain a mixed solution. The water content in the mixed solution is 60% (mass ), and then carry out wet grinding on the mixed solution, and then homogenize the material after wet grinding to obtain a slurry, which is dehydrated by mechanical pressure filtration to obtain a slurry, and another part of the organic wastewater is concentrated at 80°C and mixed with The slurry enters the rotary kiln together, and is calcined at a high temperature of 1250° C. to obtain the base material.

[0060] 2) Take 5000g of matrix material and 5000g of waste water and mix them together to make A liquid for later use;

[0061] 3) Take 4000g of fine-grained material, 120g of regulator, 6000g of filling aggregate and 12500g of waste water, and prepare B liquid for later use. The fine-grained material is 15...

Embodiment 2

[0065] 1) Mix 20 parts of desulfurized gypsum, 20 parts of aluminum ash, 35 parts of calcium carbide slag, 25 parts of coal gangue, 16 parts of iron tailings and a part of organic waste water to obtain a mixed solution. The water content in the mixed solution is 70 parts (mass ), and then carry out wet grinding on the mixed solution, and then homogenize the material after wet grinding to obtain a slurry, which is dehydrated by mechanical pressure filtration to obtain a slurry, and another part of the organic wastewater is concentrated at 95°C and then mixed with The slurry enters the rotary kiln together, and is calcined at a high temperature of 1300° C. to obtain the base material.

[0066] 2) Take 5000g of matrix material and 5000g of waste water and mix them together to make A liquid for later use;

[0067] 3) Take 5000g of fine-grained material, 120g of regulator, 5000g of filling aggregate and 10000g of waste water, and prepare B liquid for later use. The fine-grained mat...

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Abstract

The invention relates to a preparation method of an all solid waste and upper flow regime paste-like filling material. Ferrosilicoaluminum-based solid wastes and calcium sulfate-based solid wastes, which are used as raw materials, are subjected to raw grinding, homogenization, firing and clinker grinding to produce a matrix material, and the matrix material is blended with filling aggregates, a fine-grained material, a regulator and wastewater to prepare the paste-like filling material. The method achieves the preparation of the paste-like filling material by recycling industrial solid wastes.The material is prepared from a liquid component A and a liquid component B, wherein the component A is composed of the matrix material and wastewater, and is a slurry formed by stirring and mixing,and the component B is composed of the filling aggregates, the fine-grained material, the regulator and the wastewater, and is a slurry formed by stirring and mixing. The paste-like filling material prepared from multiple solid wastes has excellent properties upper flow regime, early strength, fast hardness and low bleeding rate. The preparation method has the advantages of reasonable utilizationof the industrial wastes, great consumption of the industrial solid wastes, reduction of environmental impact, construction of the environment-friendly society, and easiness in preparation.

Description

technical field [0001] The invention belongs to the technical field of cemented filling, and relates to the field that cemented filling materials can be used for goaf filling and gobside entry retention in working faces, and in particular to a preparation method of all-solid waste high-fluidity paste-like filling material. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the increase of mine mining depth and increasingly complex mining conditions in our country, the underground safety issues of resource mining, the improvement of resource recovery rate and the protection of surface ecological environment have attracted the attention of the world. Fill mining technolog...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/144C04B2201/50C04B18/12C04B18/144C04B18/04C04B18/167C04B18/142C04B18/06C04B18/0445C04B22/142C04B24/06C04B24/10
Inventor 李召峰高益凡张健刘超齐延海
Owner SHANDONG UNIV
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