CN106880919A - A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism and preparation method thereof - Google Patents
A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism and preparation method thereof Download PDFInfo
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- CN106880919A CN106880919A CN201710043601.4A CN201710043601A CN106880919A CN 106880919 A CN106880919 A CN 106880919A CN 201710043601 A CN201710043601 A CN 201710043601A CN 106880919 A CN106880919 A CN 106880919A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0007—Solid extinguishing substances
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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Abstract
A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism and preparation method thereof, are related to the spontaneous combustion resistanceization field of preventing and extinguishing fire of coal mine.The mining resistanceization type ultrahigh water fireproofing extinguishing materials are expected by A, B material and water are constituted, and the A material include by mass percentage：Sulphate aluminium cement 60~85%, calcium formate 0.5~5%, PEG400 2%~10%, calcium sulfate 5~18.5%, calcium oxide 1.5~7%, calcium chloride 2~5%；The B material include by mass percentage：Ascorbic acid 0.3~2%, sodium aluminate 15~25%, calcium oxide 33~50%, sodium sulphate 3~10%, calcium sulfate 13~30%；The mass ratio of the A material and B material is 5~7:The gross mass of 1, A material and B material is 1 with the mass ratio of addition water:(8~11).Low cost of the present invention, environmental protection, raw material sources enrich, and with the function that fast cooling and chemical block are put out a fire, are capable of the generation of regional preventing and treating coal spontaneous combustion, prevented while coal spontaneous combustion disaster is efficiently administered resume combustion and around new burning things which may cause a fire disaster point generation.
Description
Technical field
The present invention relates to the spontaneous combustion resistanceization field of preventing and extinguishing fire of coal mine, and in particular to a kind of resistance based on coal spontaneous combustion reaction mechanism
Change type ultrahigh water fireproofing extinguishing materials and preparation method thereof.
Background technology
Coal spontaneous combustion is one of major casualty of China's coal-mine, is mainly in the regions such as goaf, easily forms concealed fire, anti-to go out
Fiery material is difficult to directly reach respective regions, causes burning things which may cause a fire disaster point multiple and resume combustion situation serious consequence.At present, preventing and extinguishing fire of coal mine work
Make it is many using traditional slip casting, inert gas injection (nitrogen, liquid nitrogen and carbon dioxide etc.), note foam (two-phase and three-phase froth),
The sprinkling method such as physics retardant and gel-filled (organic and inorganic gel), and new fireproofing extinguishing materials such as chemical resistanceization
Agent, Gao Shui/ultrahigh water inorganic colloid, phase transformation colloidal sol, gel foam etc..
Above-mentioned preventing and extinguishing fire technology has ensured the preventing and controlling of China's coal spontaneous combustion disaster, but there is also certain limitation.Note
Slurry, inert gas injection, are easy to run off, fire extinguishing effect on driving birds is not good；Note foam, due to foam stabilization the limited time, foam is easily vanished
Failure, fire extinguishing cycle effective acting time is shorter；Traditional inorganic/organogel and gel foam cost are higher, use area
Domain is limited；New-type phase change colloidal sol is larger due to the aerosol using polymerized monomer, toxicity, easily causes subsurface environment pollution, and raw
Produce relatively costly；Sprinkling retardant can prevent the generation of coal spontaneous combustion, but the consumption of physics retardant to be lost in soon, and sphere of action is small,
Effective resistanceization cycle is short, in addition to possessing physics resistanceization performance, multiaction does not have new chemical retardant in coal body active group
There is mobility, high price limits usage amount, and limited coverage area.
Gao Shui/ultrahigh water material is because solid water amount is high, low cost, mobility is controllable, good, initial stage compactness of piling up spreadability
High, sealing characteristics is good, and application prospect is preferable in preventing and extinguishing fire of coal mine, but equally has fire extinguishing regional extent small, blocks the later stage
Dehydration forms the passage that leaks out, the reduction of fire extinguishing performance.Therefore, existing fireproofing extinguishing materials are in prevention coal spontaneous combustion, improvement and control certainly
There is different degrees of limitation in combustion flame range aspect, need a kind of cheap, safety and environmental protection of searching badly, control-prevent-control integration
New Coal Mine fireproofing extinguishing materials.
The content of the invention
The technical problem of solution：For there is short fire extinguishing time cycle, limited coverage area, high cost in the prior art
And the problems such as easily causing underground and pollute, the present invention provides that a kind of resistance type ultrahigh water based on coal spontaneous combustion reaction mechanism is anti-to go out
Fiery material and preparation method thereof, can be on the basis of low cost and high safety environmental protection, by blocking oxygen barrier, the fast prompt drop of solid water high
The multipaths such as gentle blocking oxidation of coal key hydroxyl radical free radical realize that flame range is efficiently administered, while by the set retardant that scatters and disappears
Moisture forming region resistanceization atmosphere, prevents spontaneous combustion development around and resume combustion, and the loss of resistanceization atmosphere leak out it is distinguished and admirable in, can be big
Scope control leaks out region coal spontaneous combustion.
Technical scheme：A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism, the fire extinguishing material
Material is made up of A material, B material and water, and the A material include by mass percentage：Sulphate aluminium cement 60~85%, calcium formate 0.5~
5%th, PEG400 2%~10%, calcium sulfate 5~18.5%, calcium oxide 1.5~7%, calcium chloride 2~5%；
The B material include by mass percentage：Ascorbic acid 0.3~2%, sodium aluminate 15~25%, calcium oxide 33~
50%th, sodium sulphate 3~10%, calcium sulfate 13~30%；
The mass ratio of the A material and B material is 5~7:The gross mass of 1, A material and B material is 1 with the mass ratio of addition water:8~
11。
Preferably, the A material constitute and are by mass percentage：Sulphate aluminium cement 70%, calcium formate 5%, poly- second two
Alcohol 400 5%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%；Composition is the B material by mass percentage：Ascorbic acid
2%th, sodium aluminate 25%, calcium oxide 45%, sodium sulphate 5%, calcium sulfate 23%；The mass ratio of the A material and B material is 6.5:1, A
The gross mass of material and B material is 1 with the mass ratio of addition water:11.
System based on a kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism described in claim 1
Preparation Method, comprises the following steps：
Step one, preparation A material and B material；
Step 2, respectively to A material and B material stirring be allowed to well mixed；
Step 3, expect to A material and B respectively in add water and be made slurries and stir；
Step 4, the slurries of A material and B material are mixed after add water stirring, be finally made mining resistanceization type ultrahigh water anti-
Fire extinguishing slurry.
Preferably, A material and the mass ratio of water are 1 in step 3:The mass ratio 1 of (5~6), B material and water:(3~4).
The chemical resistanceization characteristic of mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention is hindered by ascorbic acid molecule
Hydroxyl radical reaction sequence is realized in disconnected Coal Self-ignition Process, can destroy the chain reaction of active structure oxidation in coal
Journey, and then the quick exothermic oxidation reaction process slowed down in coal spontaneous combustion, suppress burning things which may cause a fire disaster regional development and progressively extinguish, while can prevent
Only the coal self-heating danger zone around burning things which may cause a fire disaster develop to Quick Oxidation and ultimately result in coal spontaneous combustion from slow oxidation.Research shows coal
Spontaneous combustion is substantially a chain circulation reaction and the process progressively strengthened, and is quickly disappeared by a chain circulation course of reaction
Active structure (such as aliphatic hydrocarbon and oxy radical) and heat and gaseous product are discharged in consumption coal, the chain circulation course of reaction is coal
The inner reaction path that oxidation heat liberation is carried out.Therefore, oxidation of coal exothermic reaction can be blocked by destroying chain circulation reaction
Carrying out, control new activated centre to be formed and suppress existing active structure and participate in elementary reaction, thus reduce oxidation quantity of heat production and
Toxic and harmful product discharges.Hydroxyl radical free radical is the crucial transmission intermediate that the chain circulation course of reaction persistently occurs,
The chain circulation course of reaction of coal spontaneous combustion can be more effectively destroyed by blocking hydroxyl radical free radical, the oxidation heat liberation for interrupting coal is anti-
Should.Ascorbic acid is a kind of highly-water-soluble green safety antioxidant that can efficiently eliminate hydroxyl radical free radical, is contained in its structure
There is great amount of hydroxy group group, be changed into hydroascorbic acid by supplying electronics elimination hydroxyl radical free radical step by step, with extremely strong hydroxyl
Base free radical eliminates ability.
Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention, with two kinds of resistanceization releasing patterns：One is by straight
Connect and act on the generation that coal body surface eliminates oxidation of coal free radical, the exothermic oxidation reaction of active group, prevents coal in blocking coal
Continuation oxidation heat up；Two is that the weathering that traditional Gao Shui/ultrahigh water material is present dissipates after later stage ultrahigh water material solidification is blocked
The shortcoming of dehydration point can be used effectively, and the retardant of set can be formed with moisture loss in the easy spontaneous combustion region of closure
Regional resistanceization atmosphere, large area acts on the oxidizable region of coal, effectively the generation and its resume combustion of preventing and treating coal spontaneous combustion.Therefore, originally
Invention can form the efficient Inhibition process of two-part, improve retardant utilization ratio, effectively overcome the big face of coal spontaneous combustion
The product problem that efficiently resistanceization discharges.
Beneficial effect：Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention and preparation method thereof, process is simple, institute
Use material environmental protection, inorganic component and solid water high ensure that with low cost, be blocked based on hydroxyl radical free radical in coal spontaneous combustion mechanism
The chemical resistanceization effect is significant of principle.
Compared with existing fireproofing extinguishing materials, the present invention has following outstanding advantages：
1) seal-off effect high, with low cost.Mining resistanceization type ultrahigh water material of the present invention, overcomes traditional water slurry fire extinguishing
Technology is easy to run off, without plugging effect and be difficult to reach the problem in spontaneous combustion region；Compared to gel rubber material and foamed material, due to water ash
Than high, A material used and B material are based on inorganic material, and use technique can be by the existing filling system in colliery, therefore material
It is with low cost, using convenient.
2) the fire extinguishing cycle is long, and resistanceization region is big.Mining resistanceization type ultrahigh water material of the present invention, is hindered by two-part
Change mechanism, given full play to the effect of retardant, overcome traditional high-water material for being lost after the dehydration of fire extinguishing later stage
Block the shortcoming of leak out ability, the coal spontaneous combustion of easy ignition region or resume combustion；And discharged by later stage dehydration resistanceization, forming region resistance
Change atmosphere, the shortcoming of the easy efflorescence of traditional high-water material is changed into the effective means of resistanceization release application, breach retardant big
The present situation of scope application difficult；The regional resistanceization atmosphere formed after high-water material efflorescence eliminates the self-ignition fatalness that leaks out.
3) solid water ability is strong, without excreting water phenomenon.Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention, with three kinds
Solid water pattern：The entringite to be formed is reacted by sulphate aluminium cement, mass crystallization water is consolidated；It is simultaneously solid in slurry condensation process
A large amount of free waters；PEG400 in A material, plays a part of to disperse inorganic component, and the reaction for promoting entringite to be formed is equal
It is even abundant, while PEG400 can adsorb unnecessary free water.Three kinds of solid water patterns, one is to have ensured solid water high, cause high
Close and starvation, two be the internal set of protection retardant solution it is not oxidized, in overcoming retardant conventional spray use
Easily the shortcoming of failure and tradition Gao Shui/ultrahigh water material early stage bleeding, preferably realizes the high-early of ultrahigh water material
And high compactness, economies make use of water resource.
Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the invention have solid water high, spreadability fine and close, high high and controllable solidifying
The premium properties of knot time, realizes flame range covering closure, and a large amount of solidification moisture content coolings are combined retardant and eliminate oxidation of coal freedom
Base blocks flame range chain reaction process.Therefore there is the function that fast cooling and chemical block are put out a fire, while ultrahigh water material wind
Change the set retardant forming region resistanceization atmosphere contained in the moisture that scatters and disappears, effectively produced in elimination Low-temperature Oxidation of Coal
Hydroxyl radical free radical, blocks spontaneous combustion development process, and the generation of regionality preventing and treating coal spontaneous combustion realizes flame range and controls-prevent-control integration,
Efficiently administer coal spontaneous combustion disaster while prevent flame range resume combustion and around new burning things which may cause a fire disaster point generation.Simultaneously have low cost,
The abundant advantage of environmental protection, raw material sources.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1：
A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism, are made up of A material and B material.Wherein A expects
Composition and mass ratio (kg) are：Sulphate aluminium cement 60%, calcium formate 5%, PEG400 4.5%, calcium sulfate 18.5%,
Calcium oxide 7%, calcium chloride 5%；B material composition and quality proportioning (kg) are：Ascorbic acid 2%, sodium aluminate 15%, calcium oxide
50%th, sodium sulphate 3%, calcium sulfate 30%.When in use, A material and the mass ratio of B material are 7:1, the ratio of mud is 8:1.It is specific to prepare
Process is：A material and B material are prepared according to above-mentioned mass ratio, first respectively A material and component B is well mixed, then respectively to A material and B
Added water in material and be made slurries and stir, wherein A material add water quality for A expects 5 times of quality, and B material add water quality for B expects quality
3 times.After again mixing A material and B slurries liquid, continue to stir and add water to the ratio of mud 8:1.Stand in the environment.About 3 minutes
Left and right starts just cure, without excreting water phenomenon.It is continuous to sampling in 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after its initial set
Survey its permeability, before finding 15 days, the sample permeability is almost 0, pressurize it is closely knit it is flawless there are a large amount of elutriations to go out, plugging effect
It is good.After 15 days, sample permeability starts increase, and moisture loss speed starts to increase.
Coal spontaneous combustion overall characteristic is accessed since sampling is put into after 15 days atmosphere resistanceization ability determine pipe determine device
In inlet gas pipeline, comparative determination different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effect, test result referring to
Table 1.
Embodiment 2：
A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism, are made up of A material and B material.Wherein A expects
Composition and mass ratio (kg) are：Sulphate aluminium cement 81%, calcium formate 0.5%, PEG400 10%, calcium sulfate 5%, oxygen
Change calcium 1.5%, calcium chloride 2%；B material composition and quality proportioning (kg) are：Ascorbic acid 0.3%, sodium aluminate 25%, calcium oxide
34.7%th, sodium sulphate 10%, calcium sulfate 30%.When in use, A material and the mass ratio of B material are 5:1, the ratio of mud is 9:1.Specifically
Preparation process is：A material and B material are prepared according to above-mentioned mass ratio, first respectively A material and component B is well mixed, then respectively to A
Add water and be made slurries and stir in material and B material, wherein A material add water quality for 5 times of A material quality, and B material add water quality for B
3 times of material quality.After again mixing A material and B slurries liquid, continue to stir and add water to the ratio of mud 9:1.Stand in the environment.Greatly
Start within about 4 minutes or so just cure, without excreting water phenomenon.To 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after its initial set
Its permeability is continuously surveyed in sampling, and before finding 15 days, the sample permeability is almost 0, pressurize it is closely knit it is flawless there are a large amount of elutriations to go out,
Plugging effect is good.After 15 days, sample permeability starts increase, and moisture loss speed starts to increase.
Coal spontaneous combustion overall characteristic is accessed since sampling is put into after 15 days atmosphere resistanceization ability determine pipe determine device
In inlet gas pipeline, comparative determination different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effect, test result referring to
Table 1.
Embodiment 3：
A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism, are made up of A material and B material.Wherein A expects
Composition and mass ratio (kg) are：Sulphate aluminium cement 85%, calcium formate 3%, PEG400 2%, calcium sulfate 5%, oxidation
Calcium 3%, calcium chloride 2%；B material composition and mass ratio (kg) are：Ascorbic acid 1%, sodium aluminate 20%, calcium oxide 47%, sulfuric acid
Sodium 7%, calcium sulfate 25%.When in use, A material and the mass ratio of B material are 6.5:1, the ratio of mud is 8:1.Specifically preparation process is：
According to above-mentioned mass ratio prepare A material and B material, first respectively by A material and component B be well mixed, then respectively to A material and B expect in plus
Water is made slurries and stirs, and wherein A expects to add water quality for A expects 5 times of quality, and B material add water quality for B expects 3 times of quality.
After again mixing A material and B slurries liquid, continue to stir and add water to the ratio of mud 8:1.Stand in the environment.Open within about 3 minutes or so
Begin just cure, without excreting water phenomenon.It is continuously surveyed to sampling in 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after its initial set to ooze
Saturating rate, before finding 15 days, the sample permeability is almost 0, pressurize it is closely knit it is flawless there are a large amount of elutriations to go out, plugging effect is good.15
After it, sample permeability starts increase, and moisture loss speed starts to increase.
Coal spontaneous combustion overall characteristic is accessed since sampling is put into after 15 days atmosphere resistanceization ability determine pipe determine device
In inlet gas pipeline, comparative determination different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effect, test result referring to
Table 1.
Embodiment 4：
A kind of mining resistance type ultrahigh water material based on coal spontaneous combustion mechanism, is made up of A material and B material.Wherein A material composition and
Mass ratio (kg) is：Sulphate aluminium cement 70%, calcium formate 5%, PEG400 5%, calcium sulfate 10%, calcium oxide 5%,
Calcium chloride 5%；B material composition and mass ratio (kg) are：Ascorbic acid 2%, sodium aluminate 25%, calcium oxide 45%, sodium sulphate 5%,
Calcium sulfate 23%.When in use, A material and the ratio of B material are 6.5:1.The ratio of mud is 11:1.Specifically preparation process is：According to upper
State mass ratio and prepare A material and B material, be first respectively well mixed A material and component B, then add water and be made in expecting to A material and B respectively
Slurries simultaneously stir, and wherein A expects to add water quality for A expects 6 times of quality, and B material add water quality for B expects 4 times of quality.Again A
After material and the mixing of B slurries liquid, continue to stir and add water to the ratio of mud 11:1.Stand in the environment, start just within about 5 minutes or so
Cure, without excreting water phenomenon.Its infiltration is continuously surveyed to sampling in 1 day, 3 days, 5 days, 8 days, 10 days, 15 days and 20 days after its initial set
Rate, find 15 days before, the sample permeability is almost 0, pressurize it is closely knit it is flawless there are a large amount of elutriations to go out, plugging effect is good.15 days
Afterwards, sample permeability starts increase, and moisture loss speed starts to increase.
Coal spontaneous combustion overall characteristic is accessed since sampling is put into after 15 days atmosphere resistanceization ability determine pipe determine device
In inlet gas pipeline, comparative determination different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effect, test result referring to
Table 1.
Embodiment 5：
A kind of mining resistance type ultrahigh water material based on coal spontaneous combustion mechanism, is made up of A material and B material.Wherein A material composition and
Mass ratio (kg) is：Sulphate aluminium cement 70%, calcium formate 5%, PEG400 5%, calcium sulfate 10%, calcium oxide 5%,
Calcium chloride 5%；B material composition and mass ratio (kg) are：Ascorbic acid 1%, sodium aluminate 25%, calcium oxide 45%, sodium sulphate 5%,
Calcium sulfate 24%.When in use, A material and the ratio of B material are 6.5:1.The ratio of mud is 11:1.Specifically preparation process is：Divide first
A material and component B are not well mixed, A and B are added water respectively be made slurries and stir, wherein A material add water quality for A
Material 6 times, B material add water quality for B material 4 times.After again mixing A material and B slurries liquid, continue to stir and add water to the ratio of mud 11:
1.Stand in the environment.Start within about 5 minutes or so just cure, without excreting water phenomenon.To 1 day after its initial set, 3 days, 5 days, 8
My god, 10 days, 15 days and sampling in 20 days continuously survey its permeability, before finding 15 days, the sample permeability is almost 0, is pressurizeed closely knit
Flawless to have a large amount of elutriations to go out, plugging effect is good.After 15 days, sample permeability starts increase, and moisture loss speed starts to increase.
Coal spontaneous combustion overall characteristic is accessed since sampling is put into after 15 days atmosphere resistanceization ability determine pipe determine device
In inlet gas pipeline, comparative determination different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effect, test result referring to
Table 1.
Table 1
Note：Raw coal crossing point temperature (141 DEG C), 70 DEG C of oxygen demand (1.54%), CO yields (36.34ppm).
Above-mentioned table 1 is each embodiment and places 15 days different number of days sample resistanceization releasability and coal spontaneous combustion resistanceization effects afterwards
The test result of fruit, comparative analysis is understood, in embodiment 1~5, compared with raw coal, crossing point temperature is raised, 70 DEG C of oxygen demand drops
Low, CO yields are reduced, and resistance effect is improved with the increase of ascorbic acid adding proportion in A/B batch mixings of the present invention,
It can be seen that new resistance high-water material of the present invention serves preferable Inhibition.Wherein, the effect of embodiment 4 is best, and 15
After its sample resistanceization is discharged into air-flow, compared with unprocessed original coal sample, the crossing point temperature of coal sample is increased after treatment
30 DEG C, 70 DEG C of oxygen demand reduce that 60%, CO yields are constant to reduce about 65%, and active oxy radical and aliphatic hydrocarbon group exist
Change is slow in resistanceization release atmosphere.17 days sample resistanceization efficiency about improve 8%, 20 days sample resistanceization efficiency ratios than 15 days
13% is improve within 15 days, 30 days resistanceization efficiency improve 1% than 15 days, and 3% is reduced when 50 days resistanceization efficiency was than 15 days.
The chemical resistanceization characteristic of mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention is hindered by ascorbic acid molecule
Hydroxyl radical reaction sequence is realized in disconnected Coal Self-ignition Process, can destroy the chain reaction of active structure oxidation in coal
Journey, and then the quick exothermic oxidation reaction process slowed down in coal spontaneous combustion, suppress burning things which may cause a fire disaster regional development and progressively extinguish, while can prevent
Only the coal self-heating danger zone around burning things which may cause a fire disaster develop to Quick Oxidation and ultimately result in coal spontaneous combustion from slow oxidation.Research shows coal
Spontaneous combustion is substantially a chain circulation reaction and the process progressively strengthened, and is quickly disappeared by a chain circulation course of reaction
Active structure (such as aliphatic hydrocarbon and oxy radical) and heat and gaseous product are discharged in consumption coal, the chain circulation course of reaction is coal
The inner reaction path that oxidation heat liberation is carried out.Therefore, oxidation of coal exothermic reaction can be blocked by destroying chain circulation reaction
Carrying out, control new activated centre to be formed and suppress existing active structure and participate in elementary reaction, thus reduce oxidation quantity of heat production and
Toxic and harmful product discharges.Hydroxyl radical free radical is the crucial transmission intermediate that the chain circulation course of reaction persistently occurs,
The chain circulation course of reaction of coal spontaneous combustion can be more effectively destroyed by blocking hydroxyl radical free radical, the oxidation heat liberation for interrupting coal is anti-
Should.Ascorbic acid is a kind of highly-water-soluble green safety antioxidant that can efficiently eliminate hydroxyl radical free radical, is contained in its structure
There is great amount of hydroxy group group, be changed into hydroascorbic acid by supplying electronics elimination hydroxyl radical free radical step by step, with extremely strong hydroxyl
Base free radical eliminates ability.
Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention, with three kinds of solid water patterns：By aluminium sulfate water
Mud reacts the entringite to be formed, and consolidates mass crystallization water；While a large amount of free waters of set in slurry condensation process；It is poly- in A material
Ethylene glycol 400, plays a part of to disperse inorganic component, and the reaction for promoting entringite to be formed is uniformly abundant, while PEG400
Unnecessary free water can be adsorbed.Three kinds of solid water patterns, one is to have ensured solid water high, fine and close and starvation high, and two is protection
The retardant solution of internal set is not oxidized, overcomes the problem easily failed in retardant conventional spray use.
Mining resistanceization type ultrahigh water fireproofing extinguishing materials of the present invention, with two kinds of resistanceization releasing patterns：One is by straight
Connect and act on the generation that coal body surface eliminates oxidation of coal free radical, the exothermic oxidation reaction of active group, prevents coal in blocking coal
Continuation oxidation heat up；Two is that the weathering that traditional Gao Shui/ultrahigh water material is present dissipates after later stage ultrahigh water material solidification is blocked
The shortcoming of dehydration point can be used effectively, and the retardant of set can be with moisture loss in the easy spontaneous combustion region formation area of closure
Domain property resistanceization atmosphere, large area acts on the oxidizable region of coal, effectively the generation and its resume combustion of preventing and treating coal spontaneous combustion.Therefore, this hair
It is bright to form the efficient Inhibition process of two-part, retardant utilization ratio is improve, effectively overcome coal spontaneous combustion large area
The problem of efficient resistanceization release.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (4)
1. a kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism, it is characterised in that the fire extinguishing material
Material is made up of A material, B material and water, and the A material include by mass percentage：Sulphate aluminium cement 60~85%, calcium formate 0.5~
5%th, PEG400 2%~10%, calcium sulfate 5~18.5%, calcium oxide 1.5~7%, calcium chloride 2~5%；
The B material include by mass percentage：Ascorbic acid 0.3~2%, sodium aluminate 15~25%, calcium oxide 33~50%, sulphur
Sour sodium 3~10%, calcium sulfate 13~30%；
The mass ratio of the A material and B material is 5~7:The gross mass of 1, A material and B material is 1 with the mass ratio of addition water:(8~11).
2. a kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism according to claim 1, it is special
Levy and be, preferably, A material constitute and are by mass percentage：Sulphate aluminium cement 70%, calcium formate 5%, polyethylene glycol
400 5%, calcium sulfate 10%, calcium oxide 5%, calcium chloride 5%；Composition is the B material by mass percentage：Ascorbic acid 2%,
Sodium aluminate 25%, calcium oxide 45%, sodium sulphate 5%, calcium sulfate 23%；The mass ratio of the A material and B material is 6.5:1, A material and B
The gross mass of material is 1 with the mass ratio of addition water:11.
3. the preparation based on a kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism described in claim 1
Method, it is characterised in that comprise the following steps：
Step one, preparation A material and B material；
Step 2, respectively to A material and B material stirring be allowed to well mixed；
Step 3, expect to A material and B respectively in add water and be made slurries and stir；
Step 4, the slurries of A material and B material are mixed after add water stirring, be finally made mining resistanceization type ultrahigh water fire extinguishing
Slurry.
4. the preparation of a kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism according to claim 3
Method, it is characterised in that A material and the mass ratio of water are 1 in step 3:The mass ratio 1 of (5~6), B material and water:(3~4).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043601.4A CN106880919A (en) | 2017-01-19 | 2017-01-19 | A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism and preparation method thereof |
| PCT/CN2017/114273 WO2018133561A1 (en) | 2017-01-19 | 2017-12-01 | 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 |
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| CN201710043601.4A CN106880919A (en) | 2017-01-19 | 2017-01-19 | A kind of mining resistance type ultrahigh water fireproofing extinguishing materials based on coal spontaneous combustion mechanism and preparation method thereof |
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Cited By (2)
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| WO2018133561A1 (en) * | 2017-01-19 | 2018-07-26 | 中国矿业大学 | 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 |
| CN109957434A (en) * | 2019-03-27 | 2019-07-02 | 中国矿业大学 | It is a kind of inhibit upgraded brown coal stockpile and store during spontaneous combustion inhibitor and its preparation, application method |
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| WO2018133561A1 (en) * | 2017-01-19 | 2018-07-26 | 中国矿业大学 | 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 |
| CN109957434A (en) * | 2019-03-27 | 2019-07-02 | 中国矿业大学 | It is a kind of inhibit upgraded brown coal stockpile and store during spontaneous combustion inhibitor and its preparation, application method |
| CN109957434B (en) * | 2019-03-27 | 2021-08-10 | 中国矿业大学 | Inhibitor for inhibiting spontaneous combustion in upgraded lignite stacking and storing process and preparation and use methods thereof |
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| WO2018133561A1 (en) | 2018-07-26 |
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