Foaming filling material for alkaline residue mine and preparing method thereof

A technology of filling material and alkali slag ore, which is applied in the field of foam filling material for alkali slag ore and its preparation, can solve the problems of high cost and high cement consumption, and achieve the effects of low cost, high fluidity and low density

Pending Publication Date: 2018-08-28
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has high cement consumption, high cost, no foaming agent, and does not belong to the field of foam filling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. In A mixing equipment, add A component, its weight composition is: 100 parts of cement, 100 parts of fly ash, 200 parts of alkali slag, 220 parts of water, 8 parts of foaming agent, and stir for 1 minute;

[0028] 2. In the B mixing equipment, add B component, its weight composition is: 100 parts of gypsum lime mixture, the weight composition of gypsum lime satisfies 7:1, 8 parts of active agent, 100 parts of fly ash, 200 parts of alkali slag, 220 parts of water, stirring for 1 min;

[0029] 3. Mix and stir components A and B for 1 minute, and pump them into the filling area through a grouting pump. The fluidity is good, the expansion rate is high, the initial setting time is 10 minutes, and the final setting time is 3.0 hours. 3-day compressive strength > 0.5Mpa, 28-day strength > 1Mpa. Dry density3 .

[0030] The above cement is sulfoaluminate cement, the particle size of alkali slag meets 50μm~75μm, and the foaming agent is aluminum powder. The active agent has...

Embodiment 2

[0032] 1. In A mixing equipment, add A component, its weight composition is: 100 parts of cement, 200 parts of fly ash, 100 parts of alkali slag, 240 parts of water, 8 parts of foaming agent, and stir for 0.5 minutes;

[0033] 2. In B mixing equipment, add B component, its weight composition is: 100 parts of gypsum lime mixture, the weight composition of gypsum lime satisfies 6:1, 200 parts of fly ash, 100 parts of alkali slag, 240 parts of water, 8 active agent, stirred for 0.5min;

[0034] 3. Mix and stir components A and B for 2 minutes, pump them into the filling area, the initial setting time is 8 minutes, and the final setting time is 2.8 hours. 3-day compressive strength> 0.6Mpa, 28-day strength> 1.2Mpa. Dry density3 .

[0035] The above cement is sulfoaluminate cement, the particle size of alkali slag meets 40μm~72μm, and the foaming agent is aluminum powder. The active agent has a density of 1.8~2.8g / cm 3 , the specific surface area is 380~423m 2 / kg of carbide s...

Embodiment 3

[0037] 1. In A mixing equipment, add A component, its weight composition is: 100 parts of cement, 180 parts of fly ash, 100 parts of alkali slag, 240 parts of water, 8 parts of foaming agent, and stir for 1 minute;

[0038] 2. In the B mixing equipment, add B component, its weight composition is: 100 parts of gypsum lime mixture, its weight composition of gypsum lime satisfies 7:1, 9 parts of active agent, 180 parts of fly ash, 100 parts of alkali slag, 240 parts of water, stirring for 1min;

[0039] 3. Mix and stir components A and B for 1.5 minutes, and pump them into the filling area. The fluidity is good, the initial setting time is 13 minutes, the final setting time is 3.9 hours, the compressive strength of 3 days is > 0.55Mpa, and the strength of 28 days is > 1.13Mpa , dry density 3 .

[0040] The above cement is sulfoaluminate cement, the particle size of alkali slag meets 40μm~62μm, and the foaming agent is aluminum powder. The active agent has a density of 1.8~2.5g / ...

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Abstract

The invention provides a foaming filling material for an alkaline residue mine. The foaming filling material is characterized by being comprising a component A and a component B, wherein the componentA is prepared from, by weight, 100 parts of cement, 100-200 parts of pulverized fuel ash, 100-200 parts of alkaline residue, 150-350 parts of water and 6-10 parts of foaming agent, the component B isprepared from, by weight, 100 parts of mixture of gypsum and lime, 6-10 parts of active agent, 100-200 parts of pulverized fuel ash, 100-200 parts of alkaline residue and 50-350 parts of water, and the weight ratio of gypsum to lime is (6-7):1. The foaming filling material has the advantages of having low density, low cost, short setting time, good fluidity and the like; industrial waste residueis utilized, acetylene sludge serves as the active agent at the same time, the expansion rate of the filling material is effectively increased, and the cost is effectively lowered.

Description

technical field [0001] The invention belongs to the technical field of foaming rapid filling materials for mines, in particular to a foaming filling material for alkali slag mines and a preparation method thereof. Background technique [0002] Air leakage in goafs and roadways is the main cause of spontaneous combustion fires in coal mines in my country. To prevent safety production accidents caused by coal seam fires, it is necessary to take measures to block air leakage in areas with severe air leakage in coal mines. Generally, the method of filling is adopted. [0003] There is a new demand for mine filling materials. It is hoped that the filling materials will be lightweight, low in cost, and reduce the weight of the structure. However, due to its own limitations, it is difficult to meet the requirements of both light organic materials and high strength inorganic materials. Moreover, the organic material itself has a very low ignition point, and it is difficult to overc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/02
CPCC04B28/06C04B2201/20C04B2201/50C04B2111/00724C04B18/08C04B18/0427C04B22/04C04B22/143C04B22/064C04B38/02
Inventor 张海波祝瑜张高杰高中琦汤博靳小苑白丹赵才
Owner HENAN POLYTECHNIC UNIV
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