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A kind of composite colloid gel fire-proof material and using method

A technology for fire prevention and gelation, applied in fire prevention equipment and other directions, can solve the problems of loss of control effect, excessive waste, loss of slurry, etc., to overcome the slow dissolution rate, prevent spontaneous ignition, and reduce the effect of loss rate.

Active Publication Date: 2021-01-26
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inert gas techniques include nitrogen or CO infusion 2 Gas, and special equipment can also be used to perfuse liquid nitrogen or liquid CO 2 To treat the method, liquid nitrogen or liquid CO 2 The temperature is low, it can absorb the temperature of the fire area, and it can suppress or control some fire areas, and the control effect is better than nitrogen or CO injection. 2 gas, but liquid nitrogen or liquid CO 2 After gasification, its treatment effect and infusion of nitrogen or CO 2 The gas is basically the same, and it is discharged with the air flow, losing its governance effect
The grouting technology mostly adopts the method of pouring yellow mud or fly ash slurry, which is easy to lose and cannot effectively cover the fire zone
It is also disclosed in the prior art: the method of adding high molecular weight polymer to yellow mud or fly ash slurry to solve the loss of yellow mud or fly ash slurry, high molecular weight polymer dissolves slowly, wastes more, and costs high
There are also low-molecular-weight or low-viscosity materials used to realize the gelation of the slurry. The gelation effect of low-molecular-weight or low-viscosity materials is poor, and the slurry loss is serious, wasting a lot of manpower and materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Calcium carbonate accounts for 3 percent, anhydrous magnesium chloride accounts for 0.5 percent, bentonite accounts for 46.5 percent, and sodium polyacrylate accounts for 50 percent, and is evenly mixed to prepare a composite colloidal gelling material in terms of mass percentage.

[0019] Water and loess are made into slurry according to the weight ratio of 1:1, and the fluidity diameter of the slurry is 203mm. In the prepared slurry, 2% of the composite colloidal gelling material of the slurry weight is evenly added while stirring according to the weight ratio. Continue to stir for 1min after completion, and the fluidity diameter of the slurry becomes 76mm.

Embodiment 2

[0021] Calcium carbonate accounts for 3 percent, anhydrous magnesium chloride accounts for 0.5 percent, bentonite accounts for 46.5 percent, and sodium polyacrylate accounts for 50 percent, and is evenly mixed to prepare a composite colloidal gelling material in terms of mass percentage.

[0022] Water and loess are made into slurry according to the weight ratio of 1:1, and the fluidity diameter of the slurry is 203mm. In the prepared slurry, 5% of the composite colloidal gelling material of the slurry weight is evenly added while stirring according to the weight ratio. Continue to stir for 1min after completion, and the fluidity diameter of the slurry becomes 71mm.

Embodiment 3

[0024] According to mass percentage, 20% of calcium carbonate, 5% of anhydrous magnesium chloride, 50% of bentonite and 25% of sodium polyacrylate are uniformly mixed to prepare a composite colloid gelling material.

[0025] Water and loess are made into slurry according to the weight ratio of 1:1, and the fluidity diameter of the slurry is 203mm. In the prepared slurry, 2% of the composite colloidal gelling material of the slurry weight is evenly added while stirring according to the weight ratio. Continue to stir for 1min after completion, and the fluidity diameter of the slurry becomes 119mm.

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PUM

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Abstract

A composite colloidal gel fire-proof material and its use method, comprising 3% to 40% of calcium carbonate, 0.5% to 5% of anhydrous magnesium chloride, 20% to 50% of bentonite and 20% to 50% of sodium polyacrylate in terms of mass percentage %. In order to solve the problem that the traditional grouting method is easy to lose and cannot effectively cover the fire area, the present invention adopts a mixture of calcium carbonate, anhydrous magnesium chloride, bentonite and sodium polyacrylate, which has a reasonable molecular weight range of polymer materials, and is added to the slurry when used In the middle, it can reduce the fluidity of the slurry and increase the viscosity. The invention overcomes the problems of slow dissolution rate and serious waste of high molecular weight materials, poor gelling effect and serious slurry loss of low molecular weight or low viscosity materials, and provides a new method with high efficiency and low cost for mine grouting fire prevention and extinguishing , New way.

Description

technical field [0001] The invention relates to a mine spontaneous fire prevention and control material, in particular to a composite colloidal gel fire prevention and extinguishing material and its application method. Background technique [0002] After spontaneous combustion occurs in coal mines, inert gas technology or grouting technology is mostly used to treat it. Inert gas techniques include nitrogen or CO infusion 2 Gas, and special equipment can also be used to perfuse liquid nitrogen or liquid CO 2 To treat the method, liquid nitrogen or liquid CO 2 The temperature is low, it can absorb the temperature of the fire area, and it can suppress or control some fire areas, and the control effect is better than nitrogen or CO injection. 2 gas, but liquid nitrogen or liquid CO 2 After gasification, its treatment effect and infusion of nitrogen or CO 2 The gas is basically the same, and it is discharged with the air flow, losing its governance effect. The grouting tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
Inventor 黄克军朱兴攀王苏健邓增社杨琛
Owner SHAANXI COAL & CHEM TECH INST