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High-strength mine filling solid waste cross-synergistic composite gelling agent as well as preparation method and use method thereof

A mine filling and compound glue technology, applied in cement production and other directions, can solve the problems of increasing mining costs, consuming natural resources, consuming cement, etc., and achieving the effects of reducing filling mining costs, improving safety, and improving production efficiency

Inactive Publication Date: 2021-08-24
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, mine filling materials are mainly made of ordinary cement as cement. For filling operations, mines consume a lot of cement, which not only increases mining costs, but also consumes a lot of precious natural resources.

Method used

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  • High-strength mine filling solid waste cross-synergistic composite gelling agent as well as preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] In addition, the present invention also provides a preparation method of solid waste mutual cooperation composite gelling agent, comprising the following steps:

[0031] S1. After drying the smelting waste residue and desulfurized gypsum, measure the smelting waste residue, desulfurized gypsum, coagulation accelerator, coagulation regulator and stabilizer respectively in parts by weight;

[0032] S2. Use a mill to grind smelting waste residue, desulfurized gypsum, coagulation accelerator, coagulation regulator, and stabilizer separately or together;

[0033] S3. After batching and homogenization process, it is mixed evenly to form solid waste mutual cooperation composite gelling agent.

[0034] In addition, the present invention also provides a method for using the solid waste mutual cooperation composite gelling agent, including the following steps:

[0035] S1. Configure filling slurry, which includes by weight: 3-20 parts of solid waste mutual cooperation composite ...

Embodiment 1

[0041]A high-strength mine filling solid waste interaction composite gelling agent, which includes the following parts by weight: 90 parts of smelting waste slag (25 parts of steel slag and 65 parts of blast furnace slag), 4 parts of desulfurization gypsum, 5.6 parts of quicklime, 0.25 parts of Sodium sulfate, 0.15 parts stabilizer.

[0042] The high-strength mine filling solid waste interaction composite gelling agent in Example 1 was tested. Using the filling method of the present invention, 8 parts of composite gelling agent, 64 parts of tailings, and 28 parts of water were mixed into filling slurry. Set the area to be filled as a mold, fill the filling slurry in a 70.7mm×70.7mm×70.7mm mold, remove the mold after the filling slurry solidifies and reaches a certain strength, and maintain each test block until the test age. The strength and performance tests were carried out on them respectively.

[0043] Compressive strength test: the size of the specimen is 70.7mm×70.7mm×7...

Embodiment 2

[0046] A high-strength mine filling solid waste mutual association composite gelling agent, which includes the following parts by weight: 75 parts of smelting waste slag (15 parts of nickel slag and 60 parts of blast furnace slag), 17 parts of desulfurization gypsum, 2 parts of quicklime and 4 parts Part Portland cement clinker, 0.5 part sodium carbonate, 1.4 part calcium chloride, 0.1 part stabilizer.

[0047] The high-strength mine filling solid waste mutual cooperation composite gelling agent in Example 2 is tested. Using the filling method of the present invention, 11 parts of composite gelling agent, 64 parts of tailings, and 25 parts of water are mixed into filling slurry. Set the area to be filled as a mold, fill the filling slurry in a 70.7mm×70.7mm×70.7mm mold, remove the mold after the filling slurry solidifies and reaches a certain strength, and maintain each test block until the test age. The strength and performance tests were carried out on them respectively.

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Abstract

The invention discloses a high-strength mine filling solid waste cross-synergistic composite gelling agent as well as a preparation method and a use method thereof, and relates to the technical field of composite gelling agents, wherein the solid waste cross-synergistic composite gelling agent comprises the following substances in parts by weight: 61-92 parts of smelting waste slag, 3-29 parts of desulfurized gypsum, 2-21 parts of a coagulant, 0.1-4 parts of a thickening time control agent and 0.05-0.2 part of a stabilizer; and the filling slurry is prepared from the components in parts by weight: 3-20 parts of the solid waste cross-coordination composite gelling agent, 45-75 parts of tailings and 22-40 parts of water. The solid waste cross-coordination composite gelling agent is used for replacing ordinary cement and is mixed with mine tailings and water to form the filling slurry, and the filling slurry is solidified underground to form a high-strength filling body, so that the filling mining cost is greatly reduced, and the resource utilization of industrial wastes is also realized.

Description

technical field [0001] The invention relates to the technical field of composite gelling agent, in particular to a high-strength mine filling solid waste interaction composite gelling agent and its preparation method and use method. Background technique [0002] The comprehensive utilization of solid waste is the basic national policy for implementing resource conservation, environmental protection and safe production. The comprehensive utilization of industrial solid waste in my country is not only an important measure for energy conservation and environmental protection and industrial transformation and upgrading, but also a fundamental solution to the environmental pollution and safety hazards of industrial solid waste, and a long-term strategic policy to ensure the sustainable development of my country's industry. In recent years, the annual output of smelting waste residue in my country has reached more than 400 million tons, with a comprehensive utilization rate of onl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/21C04B7/36C04B28/08
CPCC04B7/21C04B7/36C04B28/08C04B2111/00724C04B18/12Y02P40/10
Inventor 黄玉诚
Owner CHINA UNIV OF MINING & TECH (BEIJING)