Foam tailings cemented filling material and manufacturing method thereof

A technology of cemented filling materials and production methods, which is applied in ceramic products, sustainable waste treatment, solid waste management, etc., can solve the problems of large surface area, low utilization rate of tailings, geological disasters, etc., to reduce drainage costs, The effect of increasing tailings utilization and improving fluidity

Inactive Publication Date: 2010-06-09
GUANGDONG SHENGRUI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of low tailings utilization rate caused by existing filling materials, large surface occupation area leading to environmental pollution and geological disasters, and to invent a foam tailings cemented filling material with full tailings as the main aggregate and Production Method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 16.10% of cement, 66.20% of tailings, 17.00% of fly ash, and 0.68% of water reducing agent according to weight percentage, add water at room temperature and then stir (Note: water is made by hydraulically making tailings Or feng shui linkage slurry making method, the amount of water added can be controlled by the concentration of the tail mortar), and then 0.02% of the foaming agent is prepared into foam and then added to the stirred mixture and stirred again. The pore size is 30~500μm, the pores are evenly distributed, and the bulk density of the foam is 0.2~0.8kN / m 3 , After the added foam is evenly distributed in the mixture, it is transported to the underground stope for cement filling by gravity transport.

Embodiment 2

[0023] Mix 25.00% of cement, 74.55% of tailings, and 0.25% of water reducing agent according to weight percentage, add water at room temperature, and then stir (Note: Water is made by hydraulic slurry or wind-shui linkage method of tailings For adding, the amount of water added can be controlled by the concentration of the tail mortar), then 0.2% of the foaming agent is prepared into a foam and then added to the stirred mixture and stirred again. The pore size of the foam is 30~500μm , The pores are evenly distributed, and the bulk density of the foam is 0.2~0.8kN / m 3 , After the added foam is evenly distributed in the mixture, it is transported to the underground stope for cement filling by gravity transport.

Embodiment 3

[0025] Mix 20.00% of cement, 79.78% of tailings, and 0.20% of water reducing agent according to weight percentage, add water at room temperature, and then stir (Note: Water is made by hydraulically making the tailings or feng-shui linkage slurry. For adding, the amount of water added can be controlled by the concentration of the tail mortar), then 0.02% of the foaming agent is prepared into a foam and then added to the stirred mixture and stirred again. The pore size of the foam is 30~500μm , The pores are evenly distributed, and the bulk density of the foam is 0.2~0.8kN / m 3 , After the added foam is evenly distributed in the mixture, it is transported to the underground stope for cement filling by gravity transport.

[0026] Mine filling, especially mine cementation filling, is an important guarantee for the effective recovery of mineral resources and the realization of sustainable mining development. Mine cementation filling is gradually becoming a key technology in the mining ...

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Abstract

The invention relates to a high-performance foam tailings cemented filling material and a manufacturing method thereof. The foam tailings cemented filling material consists of the following components in percentage by weight: 15.0 to 50.0 percent of cement, 40.0 to 85.0 percent of tailings, 0 to 30.0 percent of fly ash, 0 to 1.0 percent of water-reducing agent, and 0 to 0.3 percent of foaming agent. The manufacturing method of the filing material comprises: mixing the cement, the tailings, the fly ash and the water-reducing agent in the proportion at room temperature; adding water and stirring the mixture to be slurry; ensuring that the ratio of water to ash is less than 1.5; preparing the foaming agent in the proportion into foam; adding the foam to the mixture material stirred well and stirring again; uniformly distributing the added foam in the mixture material; and forming the foam tailings cemented filling material. The method has the advantages of greatly increasing the utilization rate of the tailings and effectively reducing the accumulation of the tailings on the ground. The filling material has the advantages of realizing self-flow transport of downhole pipelines and improving downhole operation environment, along with good fluidity, low water consumption and no material segregation.

Description

Technical field [0001] The invention relates to a material and a manufacturing method for cemented filling of various mine gobs, in particular to a foam tailing cemented filling material and a manufacturing method. Background technique [0002] my country is a big country in mineral resources, as well as a big country in the production and consumption of mineral resources. Mining is the basis for the development and utilization of mineral resources, but while mining provides raw materials for mankind, it will inevitably disturb and destroy the surface environment. With the rapid development of the industrial society, the demand for minerals has increased rapidly, and environmental damage and waste discharge caused by resource development and utilization have become quite serious problems. At present, all kinds of mining enterprises in my country produce about 5 billion tons of ore each year, and the accumulated tailings accumulated in mines are 8 billion tons, of which 5 billion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/06C04B18/08
CPCC04B28/02Y02W30/91C04B18/08C04B18/12C04B38/10C04B2103/302C04B14/06
Inventor 陈君
Owner GUANGDONG SHENGRUI TECH CO LTD
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