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A paste filling material for mine filling mining

A paste filling and mine filling technology, applied in the field of paste filling materials, can solve problems such as high cost of long-distance transportation, insufficient filling materials, and inability to apply filling mining technology, and achieve the effect of avoiding land occupation and environmental pollution

Active Publication Date: 2022-04-12
TIANDI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in many mining areas, due to the lack of filling materials nearby and the high cost of long-distance transportation, it is impossible to apply filling mining technology

Method used

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  • A paste filling material for mine filling mining
  • A paste filling material for mine filling mining
  • A paste filling material for mine filling mining

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Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Filling material mix ratio composition:

[0044] 1. The strength of paste filling materials increases with age

[0045] In this embodiment, the strength change characteristics of a slag paste with a certain proportion are analyzed. details as follows:

[0046] A kind of paste filling material for mine filling mining, which is composed of the following components by weight percentage: 50.4% slag, 22.7% fly ash, 4.1% cement, 0.1% additive and 22.7% water, wherein, the quick-setting agent is composed of Alumina clinker, sodium carbonate, and quicklime are prepared in a mass ratio of 1:1:0.5.

[0047] Under the condition that the mass concentration of the paste filling material is 77.3%, the variation curves of the uniaxial compressive strength of the slag paste coal mine filling body at different ages are as follows: figure 2 shown. from figure 1 It can be seen that the uniaxial compressive strength of paste filling materials increases with age, and the uniaxial comp...

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Abstract

The invention discloses a paste filling material used for mine filling and mining, which comprises solid material and water, and the mass concentration of the solid material in the filling material is 75% to 80%; the solid material includes slag and fly ash , cement and additives, the filling material is composed of the following components by weight percentage: 42% to 57% slag, 12% to 33% fly ash, 2% to 8% cement, 0.1% to 0.8% additive and 20.1% ~25.6% water; wherein, the slag accounts for 54.3%~73.7% of the weight of the solid material. The paste filling material provided by the present invention can not only treat power plant waste on a large scale, avoid land occupation and environmental pollution problems, but also provide sufficient filling materials for coal mine filling and mining near the power plant, thereby providing favorable conditions for the environmental management of mining areas and power plants. technical measures.

Description

technical field [0001] The invention belongs to the fields of mine filling mining and industrial solid waste treatment, and in particular relates to a paste filling material used for mine filling mining. Background technique [0002] Thermal power plants, as the main body of China's energy industry, discharge solid wastes such as fly ash and slag (sediment at the bottom of the boiler) every year exceeding 4×10 7 t, is an important source of pollution. At present, landfill and stacking are the main methods of solid waste treatment in thermal power plants, which occupy a large area, cause great environmental pressure, high processing costs, and serious waste. Resource utilization only accounts for about 30%. [0003] On the other hand, problems such as surface subsidence and soil erosion caused by coal mining in my country are becoming more and more serious. Research data shows that there are coal mining subsidence areas distributed in 23 provinces (districts) and 151 countie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/00146C04B2111/00724C04B2201/50C04B18/10C04B18/08C04B22/06C04B22/10C04B22/064
Inventor 刘鹏亮徐刚崔锋王浩宇范志忠
Owner TIANDI SCI & TECH CO LTD
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