Fly ash mesh gel foam mud fire extinguishing agent

Abstract

The invention discloses a fly ash mesh gel foam mud fire prevention and extinguishing agent. The main points of the technical scheme are as below: the fire prevention and extinguishing agent comprises a fly ash composite flame retardant foaming agent, attapulgite clay powder with air purifying function, inorganic fiber spraying cotton, fly ash, expanded perlite powder, coal gangue powder, sodium alginate and water. The ingredients for the fly ash mesh gel foam mud fire prevention and extinguishing agent are input into a plow harrow type feed mixer, and subjected to high-speed stirring to form the fly ash mesh gel foam mud fire prevention and extinguishing agent. The mesh gel foam mud is sprayed into a flaming coal seam by an inorganic fiber coating machine, so as to facilitate the formation of a holistic mesh gel foam mud film in the fire prevention and extinguishing process, and the film always covers and adheres on the ledge surface, rapidly isolates the contact of burning coal seam with air, prevents burning of the coal mine, and avoids after-combustion of the coal seam, so as to achieve the goals of flame retardancy and fire prevention. The fire prevention and extinguishing agent is applicable to fire prevention and extinguishing in coal mine, mine operation area and forest.

Description

technical field [0001] The invention relates to an anti-fire extinguishing agent, in particular to a fly ash mesh gel foam mud anti-fire extinguishing agent. Background technique [0002] Fully mechanized top-coal caving mining has the advantages of high yield, high efficiency, and low consumption, and has been widely used in many coal production bases in my country. However, due to the high mining intensity of this coal mining method, there is a lot of residual coal left in the goaf, the height of the fall is large, and the air leakage is serious. A series of problems such as fire, gas, and dust that are difficult to solve often occur, especially fire. [0003] Foam fire extinguishing agents are divided into chemical foam, air foam, fluoroprotein foam, aqueous film-forming foam and alcohol-resistant foam. [0004] Chinese Patent Publication No. CN 102614615A, publication date: August 01, 2012, titled "a composite foam fire extinguishing agent for coal mine underground", di...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the above-mentioned patents are: although the foam multiple of the fire extinguishing agent can reach 20 to 200 times, and the foam stability time is ≥ 2.5 hours, it can only make the "inert gas carbon dioxide foam spread in the fire zone and fill its space in a short time." , so that the oxygen concentration in the fire area drops rapidly, causing the fire area to suffocate due to lack of oxygen", it cannot really isolate the contact between the burning coal seam and the air, prevent the coal mine from continuing to burn, avoid the re-ignition of the coal seam, and achieve flame retardancy and fire prevention. Purpose

If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to humans and organisms