WO2018133561A1

WO2018133561A1 - Inhibition type, ultra-high water fire preventing and extinguishing material on basis of coal spontaneous combustion mechanism for use in mining, and preparation method therefor

Info

Publication number: WO2018133561A1
Application number: PCT/CN2017/114273
Authority: WO
Inventors: 戚绪尧; 辛海会; 韦存祥; 白子明; 陈良舟
Original assignee: 中国矿业大学
Priority date: 2017-01-19
Filing date: 2017-12-01
Publication date: 2018-07-26
Also published as: CN106880919A

Abstract

An inhibition type, ultra-high water fire preventing and extinguishing material on the basis of a coal spontaneous combustion mechanism for use in mining, and a preparation method therefor, relating to the field of spontaneous combustion inhibition for preventing and extinguishing fires in coal mining. The inhibition type ultra-high water fire preventing and extinguishing material for use in mining is composed of materials A, materials B and water. The materials A comprise, by mass, 60%-85% of sulphoaluminate cement, 0.5%-5% of calcium formate, 2%-10% of polyethylene glycol 400, 5%-18.5% of calcium sulfate, 1.5%-7% of calcium oxide and 2%-5% of calcium chloride; the materials B comprise, by mass, 0.3%-2% of ascorbic acid, 15%-25% of sodium aluminate, 33%-50% of calcium oxide, 3%-10% of sodium sulfate and 13%-30% of calcium sulfate. The mass ratio of the materials A to the materials B is 5-7:1, and the mass ratio of the total mass of the materials A and the materials B to the mass of the added water is 1: (8-11). With the present invention, the cost is low, environmental friendliness is achieved, and the raw materials come from an abundant source. The present invention has the functions of rapid cooling and chemically inhibiting and extinguishing, and may regionally prevent and treat instances of coal spontaneous combustion. Re-combustion and occurrence of new peripheral combustion sources are prevented at the same time that a coal spontaneous combustion calamity is treated efficiently.

Description

[Invention name established by ISA according to Rule 37.2] Mine resisting type super high water fire extinguishing material based on coal spontaneous combustion mechanism and preparation method thereof

Technical field

The invention relates to the field of self-ignition resistance of coal mine fire prevention, in particular to a resistive type super high water fire prevention material based on coal spontaneous combustion reaction mechanism and a preparation method thereof.

Background technique

Coal spontaneous combustion is one of the main disasters in coal mines in China. It occurs mostly in goaf areas and is easy to form a hidden fire source. It is difficult for fire-fighting materials to reach the corresponding areas directly, resulting in frequent fire source points and serious consequences of re-ignition. At present, coal mine fire prevention work uses traditional grouting, inert gas injection (nitrogen, liquid nitrogen and carbon dioxide, etc.), foam injection (two-phase and three-phase foam), spray physical inhibitor and injection gel (organic and inorganic). Methods such as gel), as well as new fire-extinguishing materials such as chemical inhibitors, high water/ultra-high water inorganic colloids, phase change sols, gel foams, and the like.

The above fire prevention technology has guaranteed the prevention and control of coal spontaneous combustion disasters in China, but it also has certain limitations. Grouting and inert gas injection are easy to lose, and the fire prevention effect is not good; foam injection, due to limited foam stabilization time, foam is easy to break, and the effective time period of fire prevention is shorter; traditional inorganic/organic gel and gel The cost of foam is high and the use area is limited. The new phase change sol is highly toxic due to the use of aerosol of polymerized monomer, which is easy to cause underground pollution and high production cost. Spraying inhibitor can prevent spontaneous combustion of coal. However, the physical resisting agent consumes a rapid loss, the scope of action is small, and the effective resisting cycle is short. In addition to the physical resistance properties, the new chemical inhibitor has many acts on the active group of the coal, but has no fluidity and high price limit. The amount of use, and the coverage is limited.

High water/ultra-high water materials have good application prospects in coal mine fire prevention due to high solid water content, low cost, controllable fluidity, good stacking coverage, high initial compactness and good plugging performance. The area is small, and the water loss in the later stage of the plugging forms a leaky passage, and the fire prevention performance is reduced. Therefore, the existing fire-extinguishing materials have different degrees of limitations in preventing coal spontaneous combustion, treatment and control of self-ignition fire zones, and it is urgent to find a new coal mine fire-extinguishing material with low price, safety and environmental protection, and governance-anti-control integration. .

Summary of the invention

Technical problem to be solved: In view of the problems in the prior art that the fire prevention time period is short, the coverage is limited, the cost is high, and the downhole pollution is easily caused, the present invention provides a resistive type super high water fire extinguishing material based on the coal spontaneous combustion reaction mechanism. And its preparation method can realize high-efficiency treatment of fire area by blocking oxygen barrier, high solid water rapid cooling and blocking coal oxidation key hydroxyl radicals on the basis of low cost, high safety and environmental protection, and at the same time, through the loss of fixation The moisture of the inhibitor forms a regional resistive atmosphere, prevents the surrounding spontaneous combustion from developing and re-igniting, and the resistive atmosphere escapes in the airflow, which can control the spontaneous combustion of the coal in the air leakage area.

Technical Solution: A mine-resistant ultra-high water fire-extinguishing material based on coal spontaneous combustion mechanism, the fire-extinguishing material is composed of A material, B material and water, and the A material comprises: sulphoaluminate cement by mass percentage 60 to 85%, calcium formate 0.5 to 5%, polyethylene glycol 4002% to 10%, calcium sulfate 5 to 18.5%, calcium oxide 1.5 to 7%, calcium chloride 2 to 5%;

The B material comprises, by mass percentage, 0.3 to 2% of ascorbic acid, 15 to 25% of sodium aluminate, 33 to 50% of calcium oxide, 3 to 10% of sodium sulfate, and 13 to 30% of calcium sulfate;

The mass ratio of the A material to the B material is 5-7:1, and the mass ratio of the total mass of the A material and the B material to the added water is 1:8-11.

Preferably, the composition of the A material is: sulphoaluminate cement 70%, calcium formate 5%, polyethylene glycol 4005%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%; The composition of the B material according to the mass percentage is: ascorbic acid 2%, sodium aluminate 25%, calcium oxide 45%, sodium sulfate 5%, calcium sulfate 23%; the mass ratio of the A material to the B material is 6.5:1, A The mass ratio of the total mass of the feedstock and the B feed to the added water was 1:11.

A method for preparing a mine-resistant ultra-high water fire-extinguishing material based on coal spontaneous combustion mechanism according to claim 1, comprising the following steps:

Step 1: Prepare A material and B material;

Step 2: Mixing the A and B materials separately to make them evenly mixed;

Step 3: adding water to the A material and the B material to form a slurry and stirring uniformly;

Step 4: Mixing the slurry of the A material and the B material, adding water and stirring, and finally forming a mine-resistant high-temperature fireproof fire slurry.

Preferably, in step 3, the mass ratio of material A to water is 1: (5-6), and the mass ratio of material B to water is 1: (3 to 4).

The chemical resistance property of the mineral-resistant ultra-high water fire-extinguishing material of the present invention is realized by blocking the hydroxyl radical reaction sequence in the spontaneous combustion process of coal by ascorbic acid molecules, and can destroy the chain reaction process of active structure oxidation in coal, and further It can quickly slow down the oxidative exothermic reaction process in coal spontaneous combustion, inhibit the development of the fire source area and gradually extinguish it. At the same time, it can prevent the spontaneous combustion of coal around the fire source from slow oxidation to rapid oxidation and eventually lead to spontaneous combustion of coal. Studies have shown that coal spontaneous combustion is essentially a chain-type cyclic reaction and a step-by-step process to rapidly consume active structures (such as aliphatic hydrocarbons and oxygen-containing groups) in coal and release heat and gaseous products through a chain-type cyclic reaction process. The chain cyclic reaction process is an intrinsic reaction path in which the coal oxidation is exothermic. Therefore, by destroying the chain-type cyclic reaction, it is possible to block the progress of the coal oxidation exothermic reaction, control the formation of a new active center, and inhibit the existing active structure from participating in the elementary reaction, thereby reducing the oxidation heat generation and the release of toxic and harmful gas products. Hydroxyl radicals are the key transport intermediates in the chain cyclic reaction process. By blocking hydroxyl radicals, the chain cycle reaction process of coal spontaneous combustion can be more effectively destroyed, and the oxidation exothermic reaction of coal is interrupted. Ascorbic acid is a highly water-soluble green safe antioxidant capable of effectively eliminating hydroxyl radicals. Its structure contains a large number of hydroxyl groups, which are converted into dehydroascorbic acid by stepwise supply of electrons. Eliminate ability.

The mine resisting type super high water fire extinguishing material of the invention has two forms of resistive release: one is to eliminate the generation of oxidative free radicals of coal by directly acting on the surface of the coal body, and block the oxidation of the active groups in the coal. The thermal reaction prevents the coal from continuing to oxidize and heat up. Second, after the late super-high water material is solidified and sealed, the disadvantages of the conventional high-water/ultra-high water material in the weathering and loss of moisture can be effectively utilized, and the fixed inhibitor can follow the moisture. Lost in the easily ignited area of the block, forming a regional resistive atmosphere, a large area acts on the easily oxidized area of coal, effectively preventing the occurrence of spontaneous combustion of coal and its re-ignition. Therefore, the invention can form a two-stage high-efficiency resistive process, improve the utilization efficiency of the inhibitor, and effectively overcome the problem of high-efficiency resistive release of coal spontaneous combustion.

The invention has the advantages that the mine resisting type super high water fire extinguishing material and the preparation method thereof have the advantages of simple process, green materials used for environmental protection, inorganic components and high solid water ensuring low cost, and hydroxyl radicals based on coal spontaneous combustion mechanism The chemical resistance effect of the blocking principle is remarkable.

Compared with the existing fire extinguishing materials, the present invention has the following outstanding advantages:

1) High plugging and low cost. The mine resisting type super high water material of the invention overcomes the traditional water slurry fire extinguishing The technology is easy to lose, no blocking effect and difficult to reach the problem of spontaneous combustion area; compared with gel material and foam material, because of the high water-cement ratio, the A material and B material used are mainly inorganic materials, and the process can be used with coal mine The existing grouting system has low material cost and convenient application.

2) The fire prevention period is long and the resistance zone is large. The mine resisting type ultra-high water material of the invention fully exerts the function of the inhibitor by the two-stage resistive process, and overcomes the traditional high-water material for preventing the leakage of the air after the water loss in the later stage of the fire prevention. The shortcomings of self-ignition or re-ignition of coal in the area of easy igniting; and the formation of a regional resistive atmosphere through the late loss of water and resistion, transforming the shortcomings of the traditional high-water material into powder, and turning it into an effective way to resist release applications, breaking through The current situation of difficulty in the application of a wide range of inhibitors; the regional resistive atmosphere formed by the pulverization of high-water materials eliminates the risk of self-ignition of air leakage.

3) Strong solid water capacity and no bleeding. The mine resisting type ultra-high water fire-extinguishing material of the invention has three solid water modes: ettringite formed by reaction of sulphoaluminate cement, solidified a large amount of crystal water; and a large amount of free solidification during slurry coagulation process Water; polyethylene glycol 400 in the A material acts to disperse the inorganic component, and the reaction of forming the ettringite is uniform and sufficient, and the polyethylene glycol 400 can adsorb excess free water. Three kinds of solid water modes, one is to ensure high solid water, high density and oxygen isolation, and the other is to protect the internal fixed inhibitor solution from oxidation, overcome the traditional failure of the inhibitor and traditional high water / The shortcomings of ultra-high water materials in the early stage of bleeding, better realize the early coagulation and high density of ultra-high water materials, and save water resources.

The mine resisting type ultra-high water fireproof fire material of the invention has the excellent performances of high solid water, high density, high coverage and controllable setting time, realizes coverage of fire area, and a large amount of solidified water cooling, composite resistance The chemical agent eliminates the oxidative free radical of coal and blocks the chain reaction process in the fire zone. Therefore, it has the functions of rapid cooling and chemical blocking of fire extinguishing, and at the same time, the super-high water material weathering dissipates the solid inhibitor in the moisture to form a regional resistive atmosphere, effectively eliminates the hydroxyl radical generated during the low-temperature oxidation of coal, and blocks spontaneous combustion. The development process, regional prevention and control of coal spontaneous combustion, the realization of fire zone treatment - prevention - control integration, in the efficient treatment of coal spontaneous combustion disasters while preventing the re-ignition of fire zones and the emergence of new fire sources around. At the same time, it has the advantages of low cost, green environmental protection and abundant raw material sources.

detailed description

The invention will now be further described in conjunction with specific embodiments.

Example 1:

A mine-resistant ultra-high water fire-extinguishing material based on coal spontaneous combustion mechanism, consisting of A material and B material. The composition and mass ratio (kg) of material A are: sulphoaluminate cement 60%, calcium formate 5%, polyethylene glycol 400 4.5%, calcium sulfate 18.5%, calcium oxide 7%, calcium chloride 5%; B The composition of the material and the mass ratio (kg) are: ascorbic acid 2%, sodium aluminate 15%, calcium oxide 50%, sodium sulfate 3%, and calcium sulfate 30%. When used, the mass ratio of material A to material B is 7:1, and the water-cement ratio is 8:1. The specific preparation process is as follows: according to the above mass ratio, the A material and the B material are prepared, and the A material and the B material component are separately mixed uniformly, and then the water is added to the A material and the B material to form a slurry and stirred uniformly, wherein the A material is added with water. The mass is 5 times the mass of the A material, and the water quality of the B material is 3 times the mass of the B material. After mixing the material A and the slurry B, continue stirring and add water to a water to cement ratio of 8:1. Stand still in the environment. Initial coagulation started in about 3 minutes, and there was no bleeding. The samples were continuously measured for 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after initial coagulation. It was found that the permeability of the sample was almost zero before 15 days, and the pressure was compact without cracks. A large amount of water is precipitated and the sealing effect is good. After 15 days, the sample permeability began to increase and the water dispersion loss rate began to increase.

From the 15th day onwards, the sample was placed in the atmosphere resistance measuring tube and inserted into the inlet gas line of the coal spontaneous combustion comprehensive characteristic measuring device. The resistance and release ability of the sample and the self-ignition resistance of the coal were compared and compared. The test results are shown in Table 1. .

Example 2:

A mine-resistant ultra-high water fire-extinguishing material based on coal spontaneous combustion mechanism, consisting of A material and B material. The composition and mass ratio (kg) of material A are: sulphoaluminate cement 81%, calcium formate 0.5%, polyethylene glycol 400 10%, calcium sulfate 5%, calcium oxide 1.5%, calcium chloride 2%; B The composition of the material and the mass ratio (kg) were ascorbic acid 0.3%, sodium aluminate 25%, calcium oxide 34.7%, sodium sulfate 10%, and calcium sulfate 30%. When used, the mass ratio of material A to material B is 5:1, and the water-cement ratio is 9:1. The specific preparation process is as follows: according to the above mass ratio, the A material and the B material are prepared, and the A material and the B material component are separately mixed uniformly, and then the water is added to the A material and the B material to form a slurry and stirred uniformly, wherein the A material is added with water. The mass is 5 times the mass of the A material, and the water quality of the B material is 3 times the mass of the B material. After mixing the material A and the slurry B, continue stirring and add water to a water to cement ratio of 9:1. Stand still in the environment. Initial coagulation started in about 4 minutes, and there was no bleeding. The permeability of the test piece was sampled for 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after the initial setting. It was found that the permeability of the sample was almost zero before 15 days, and the pressure was compact without cracks. A large amount of water is precipitated and the sealing effect is good. After 15 days, the sample permeability began to increase and the water dispersion loss rate began to increase.

Example 3:

A mine-resistant super high water fireproof fire material based on coal spontaneous combustion mechanism, which is composed of A material and B material. The composition and mass ratio (kg) of material A are: sulphoaluminate cement 85%, calcium formate 3%, polyethylene glycol 400 2%, calcium sulfate 5%, calcium oxide 3%, calcium chloride 2%; B The composition and mass ratio (kg) were ascorbic acid 1%, sodium aluminate 20%, calcium oxide 47%, sodium sulfate 7%, and calcium sulfate 25%. When used, the mass ratio of material A to material B is 6.5:1, and the water-cement ratio is 8:1. The specific preparation process is as follows: according to the above mass ratio, the A material and the B material are prepared, and the A material and the B material component are separately mixed uniformly, and then the water is added to the A material and the B material to form a slurry and stirred uniformly, wherein the A material is added with water. The mass is 5 times the mass of the A material, and the water quality of the B material is 3 times the mass of the B material. After mixing the material A and the slurry B, continue stirring and add water to a water to cement ratio of 8:1. Stand still in the environment. Initial coagulation started in about 3 minutes, and there was no bleeding. The permeability of the test piece was sampled for 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after initial setting. It was found that the permeability of the sample was almost zero before 15 days, and the pressure was compact without cracks. A large amount of water is precipitated and the sealing effect is good. After 15 days, the sample permeability began to increase and the water dispersion loss rate began to increase.

Example 4:

A mine-resistant ultra-high water material based on coal spontaneous combustion mechanism, which consists of A material and B material. The composition and mass ratio (kg) of material A are: sulphoaluminate cement 70%, calcium formate 5%, polyethylene glycol 4005%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%; The composition and mass ratio (kg) were ascorbic acid 2%, sodium aluminate 25%, calcium oxide 45%, sodium sulfate 5%, and calcium sulfate 23%. When used, the ratio of material A to material B is 6.5:1. The water to cement ratio is 11:1. The specific preparation process is as follows: according to the above mass ratio, the A material and the B material are prepared, and the A material and the B material component are separately mixed uniformly, and then the water is added to the A material and the B material to form a slurry and stirred uniformly, wherein the A material is added with water. The mass is 6 times the mass of the A material, and the water quality of the B material is 4 times the mass of the B material. After mixing the material A and the slurry B, continue stirring and add water to a water to cement ratio of 11:1. After standing in the environment, it will begin to solidify in about 5 minutes, without bleeding. The samples were continuously measured for 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after initial coagulation. It was found that the permeability of the sample was almost zero before 15 days, and the pressure was compact without cracks. A large amount of water is precipitated and the sealing effect is good. After 15 days, the sample permeability began to increase and the water dispersion loss rate began to increase.

Example 5:

A mine-resistant ultra-high water material based on coal spontaneous combustion mechanism, which consists of A material and B material. The composition and mass ratio (kg) of material A are: sulphoaluminate cement 70%, calcium formate 5%, polyethylene glycol 4005%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%; The composition and mass ratio (kg) were: ascorbic acid 1%, sodium aluminate 25%, calcium oxide 45%, sodium sulfate 5%, and calcium sulfate 24%. When used, the ratio of material A to material B is 6.5:1. The water to cement ratio is 11:1. The specific preparation process is as follows: firstly, the A and B components are uniformly mixed, and the A and B waters are respectively added into a slurry and stirred uniformly, wherein the A material is added with water quality 6 times, and the B material is B material. 4 times. After mixing the material A and the slurry B, continue stirring and add water to a water to cement ratio of 11:1. Stand still in the environment. Initial coagulation started in about 5 minutes, and there was no bleeding. The samples were continuously measured for 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after initial coagulation. It was found that the permeability of the sample was almost zero before 15 days, and the pressure was compact without cracks. A large amount of water is precipitated and the sealing effect is good. After 15 days, the sample permeability began to increase and the water dispersion loss rate began to increase.

Table 1

Note: raw coal intersection temperature (141 ° C), 70 ° C oxygen consumption (1.54%), CO production (36.34ppm).

Table 1 above shows the test results of the resistive release ability and the self-ignition resistance effect of the samples in different examples and after 15 days of standing. The comparative analysis shows that in Examples 1 to 5, the junction temperature is increased compared with the raw coal. 70 ° C oxygen consumption decreased, CO production decreased, and the inhibition effect increased with the increase of the proportion of ascorbic acid in the A / B mixture of the present invention, it can be seen that the novel resistant high water material of the present invention is better Resistance. Among them, the effect of Example 4 is the best. After the 15 days sample is released into the gas stream, the temperature of the intersection of the treated coal sample is increased compared with the untreated raw coal sample. At 30 ° C, the oxygen consumption is reduced by 60% at 70 ° C, the CO production is reduced by about 65%, and the active oxygen-containing groups and aliphatic hydrocarbon groups are slowly changed in the resistive release atmosphere. The 17-day sample inhibition efficiency was increased by 8% compared with 15 days, the 20-day sample inhibition efficiency was increased by 13% compared with 15 days, the 30-day inhibition efficiency was increased by 1% compared with 15 days, and the 50-day inhibition efficiency was 15 days. Reduced by 3%.

The mine resisting type ultra-high water fire-extinguishing material of the invention has three solid water modes: ettringite formed by reaction of sulphoaluminate cement, solidified a large amount of crystal water; and a large amount of free solidification during slurry coagulation process Water; polyethylene glycol 400 in the A material acts to disperse the inorganic component, and the reaction of forming the ettringite is uniform and sufficient, and the polyethylene glycol 400 can adsorb excess free water. Three kinds of solid water modes, one is to ensure high solid water, high density and oxygen isolation, and the other is to protect the internal fixed inhibitor solution from oxidation, which overcomes the problem of easy failure in the conventional spraying of the inhibitor.

The mine resisting type super high water fire extinguishing material of the invention has two forms of resistive release: one is to eliminate the generation of oxidative free radicals of coal by directly acting on the surface of the coal body, and block the oxidation of the active groups in the coal. The thermal reaction prevents the coal from continuing to oxidize and heat up. Second, after the late super-high water material is solidified and sealed, the disadvantages of the conventional high-water/ultra-high water material in the weathering and loss of moisture can be effectively utilized, and the fixed inhibitor can follow the moisture. Lost in the blocked spontaneous combustion zone to form a regional resistance atmosphere, a large area acts on the coal easily oxidized area, effectively preventing the occurrence of coal spontaneous combustion and re-ignition. Therefore, the invention can form a two-stage high-efficiency resistive process, improve the utilization efficiency of the inhibitor, and effectively overcome the problem of high-efficiency resistive release of coal spontaneous combustion.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A mine resisting type ultra high water fire extinguishing material based on coal spontaneous combustion mechanism, characterized in that the fire extinguishing material is composed of A material, B material and water, and the A material comprises: sulphoaluminate by mass percentage Cement 60-85%, calcium formate 0.5-5%, polyethylene glycol 400 2%-10%, calcium sulfate 5-18.5%, calcium oxide 1.5-7%, calcium chloride 2~5%;

The B material comprises, by mass percentage, 0.3 to 2% of ascorbic acid, 15 to 25% of sodium aluminate, 33 to 50% of calcium oxide, 3 to 10% of sodium sulfate, and 13 to 30% of calcium sulfate;

The mass ratio of the A material to the B material is 5-7:1, and the mass ratio of the total mass of the A material and the B material to the added water is 1: (8-11).
The mine-resistant ultra-high water fire-extinguishing material based on the self-ignition mechanism of coal according to claim 1, wherein the material A is preferably composed of sulphoaluminate cement by 70% by mass percentage. Calcium formate 5%, polyethylene glycol 400 5%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%; the B material is composed of mass percentage: ascorbic acid 2%, sodium aluminate 25%, oxidation Calcium 45%, sodium sulfate 5%, calcium sulfate 23%; the mass ratio of the A material to the B material is 6.5:1, and the mass ratio of the total mass of the A material and the B material to the water added is 1:11.
A method for preparing a mine-resistant ultra-high water fire-extinguishing material based on a coal spontaneous combustion mechanism according to claim 1, characterized in that it comprises the following steps:

Step 1: Prepare A material and B material;

Step 2: Mixing the A and B materials separately to make them evenly mixed;

Step 3: adding water to the A material and the B material to form a slurry and stirring uniformly;

Step 4: Mixing the slurry of the A material and the B material, adding water and stirring, and finally forming a mine-resistant high-temperature water-proof fire-extinguishing slurry.
The method for preparing a mine-resistant ultra-high water fire-extinguishing material based on coal spontaneous combustion mechanism according to claim 3, wherein the mass ratio of material A to water in step 3 is 1: (5-6) , the mass ratio of material B to water is 1: (3 ~ 4).