CN102562123A - Mine high-explosive coal dust explosion suppressant and preparation method thereof - Google Patents
Mine high-explosive coal dust explosion suppressant and preparation method thereof Download PDFInfo
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- CN102562123A CN102562123A CN2011104587815A CN201110458781A CN102562123A CN 102562123 A CN102562123 A CN 102562123A CN 2011104587815 A CN2011104587815 A CN 2011104587815A CN 201110458781 A CN201110458781 A CN 201110458781A CN 102562123 A CN102562123 A CN 102562123A
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Abstract
A mine high-explosive coal dust explosion suppressant with excellent explosion suppressing effect is made of raw materials including, by weight percentage, 10-30% of Al(OH)3, 10-30% of diatomite and 40-70% of ammonium polyphosphate. The preparation method includes weighing the raw materials including, by weight percentage, 10-30% of Al(OH)3, 10-30% of diatomite and 40-70% of ammonium polyphosphate, crushing the raw materials into powder respectively, mixing the powder uniformly, and finally drying the mixed powder.
Description
Technical field
The present invention relates to a kind of Explosion suppressant, relate in particular to high quick-fried coal dust Explosion suppressant of a kind of mine and preparation method thereof.
Background technology
Mine dust is one of main natural calamity of mine production as the inevitable outcome in the coal production process, and it not only causes occupational disease, and many coal dusts also have explosivity simultaneously, and the safety in production of mine in serious threat.And most particularly serious coal mining accidents all have the participation of coal dust, and the participation of coal dust not only can make the power of blast acutely increase, and because the incomplete reaction meeting of coal dust discharges a large amount of toxic gases, thereby cause more casualties and property loss; According to investigations, the mine coal dust of China 88% has explosivity, and the harm that coal dust produces is very huge; The shock wave that the coal-dust explosion disaster is produced by local dust cloud or other explosive blast (i.e. " initial explosion ") often makes a large amount of deposition dust from flying and mixes with air, and formation combustion explosion propagation (i.e. " subsequent explosion ") causes, and its scope that involves is whole tunnel even whole system often; The main rock dust (calcium carbonate) of using broadcasts sowing and reduces oxygen content in the present stage Coal Production; Suppress the purpose that blast generates thereby reach, yet rock dust makes moist easily to lump and loses the ability of flying upward; Its performance aspect the inhibition blast is also very limited simultaneously; Except rock dust, part ammonium salt, sulfate and carbonate are also used to some extent, facts have proved; Because the mechanism of action, self property and the ambient conditions of different Explosion suppressants is different, they have than evident difference on datonation-inhibition effect; The Explosion suppressant addition of tradition Explosion suppressant is big, is prone to lose efficacy datonation-inhibition weak effect.
Summary of the invention
The purpose of this invention is to provide the high quick-fried coal dust Explosion suppressant of a kind of datonation-inhibition effective mine.
The preparation method that the purpose of this invention is to provide the high quick-fried coal dust Explosion suppressant of a kind of datonation-inhibition effective mine.
Be to realize above-mentioned purpose, the technical scheme that the present invention adopts is: the high quick-fried coal dust Explosion suppressant of a kind of mine, it is characterized in that, and comprise that following raw materials by weight percent processes:
Al (OH)
3: 10-30%, kieselguhr: 10-30%, APP: 40-70%.
The preparation method of the high quick-fried coal dust Explosion suppressant of a kind of mine is characterized in that, gets raw material A l (OH) by weight percentage
3: 10-30%, kieselguhr: 10-30%, APP: 40-70% is ground into powder respectively, mixes then, and mixed product drying can be obtained finished product.
Advantageous effect of the present invention is: use when of the present invention, Explosion suppressant, coal dust is minimum adds according to 0.25:1, can suppress blast fully and generate, and this needs 1:1 to add with respect to traditional Explosion suppressant, even the vast scale datonation-inhibition better effects if of adding more.
Description of drawings
Fig. 1 is a preparation method block diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further:
Embodiment 1,
As shown in Figure 1, the high quick-fried coal dust Explosion suppressant of a kind of mine is characterized in that, comprises that following raw materials by weight percent processes:
Al (OH)
3: 10-30%, kieselguhr: 10-30%, APP: 40-70%.
The preparation method of the high quick-fried coal dust Explosion suppressant of a kind of mine is characterized in that, gets raw material A l (OH) by weight percentage
3: 10-30%, kieselguhr: 10-30%, APP: 40-70% is ground into powder respectively, mixes then, and mixed product drying can be obtained finished product.
Embodiment 2,
The high quick-fried coal dust Explosion suppressant of mine is characterized in that, comprises that following raw materials by weight percent processes: Al (OH)
3: 20%, kieselguhr: 20%, APP: 60%.
The preparation method of the high quick-fried coal dust Explosion suppressant of a kind of mine is characterized in that, gets raw material A l (OH) by weight percentage
3: 20%, kieselguhr: 20%, APP: 60%, be ground into powder respectively, mix then, mixed product drying can be obtained finished product.
Embodiment 3,
The high quick-fried coal dust Explosion suppressant of mine is characterized in that, comprises that following raw materials by weight percent processes: Al (OH)
3: 25%, kieselguhr: 25%, APP: 50%.
The preparation method of the high quick-fried coal dust Explosion suppressant of a kind of mine is characterized in that, gets raw material A l (OH) by weight percentage
3: 25%, kieselguhr: 25%, APP: 50%, be ground into powder respectively, mix then, mixed product drying can be obtained finished product.
Using the spherical blast of international 20L testing arrangement makes an experiment to the foregoing description 1 and embodiment 2 composite Explosion suppressant performances with automatic explosion suppression device; Composite Explosion suppressant addition is controlled at below 50%; Minimum addition 25 is %, and effect is best in embodiment 2, suppresses blast fully and generates.
(1) delays the rise time of exploding.Owing to added the Al (OH) of efficient heat-absorbing action
3, the APP of participating in chemical reaction simultaneously also is the endothermic reaction, therefore can estimate, through the interpolation of Explosion suppressant, can the time that blast generates be delayed.
(2) reduce blast maximum pressure and pressure climbing speed.Since the heat absorption that reaction receives external Explosion suppressant and absorption, reaction free radical, thus in the development communication process of chain, can make the speed reduction, directly have influence on the brisance of blast, show the reduction of maximum explosion pressure and pressure climbing speed.
(3) suppressing blast fully generates.Promptly reach coal-dust explosion concentration, good dispersion in the space and have under the prerequisite of incendiary source, through a plurality of inhibition mechanism synergies, making detonation to produce or to explode can't propagate, and has promptly suppressed the generation of blast fully, makes harmfulness eliminate.
Al (OH)
3The fire retardant mechanism of fire retardant is through improving thermal capacitance, making it before reaching heat decomposition temperature, absorb more heat, thereby improve its fire-retardant datonation-inhibition function.The characteristic of a large amount of heat absorptions improves the datonation-inhibition ability of himself when giving full play to its water of hydration steam.Have good cooling do bright, thereby reduce the time that quick-fried temperature, flame and flame exist, the combustion reaction chain can not be continued, suppress the development of explosive flame, thereby reach the effect of stamping out the flames, suppressing to explode.
Weaken the active angle of free radical, theoretical based on activation energy, bumping between two kinds of anakmetomeres just can react.The gas explosion process is a kind of chain reaction of free radical, is full of activation gas molecule, oxygen molecule, free radical in the blast system.And chain reaction is responsive to additive.APP (ammonium polyphosphate abbreviates APP as) is that the long-chain shape is phosphorous, the inorganic polymer of nitrogen, and its general molecular formula is: (NH
4P0
3)
n
By the effect of the datonation-inhibition powder of APP, consumed the free radical in the combustion explosion reaction.When a large amount of datonation-inhibition powders sprayed to flame with vaporific form, the free radical in the flame was sharply reduced free radical quantity by a large amount of absorption and conversion, caused the chain reaction of burning to be interrupted. and finally make fray-out of flame, blast is ended.So choose APP as one of monomer.
Absorb the free radical angle; Kieselguhr is a kind of biogenic silicastone; Mainly by ancient times the diatom remains form; Have some particular performances like: porosity (porosity reaches 80%-90%), bigger surface area, have fine and smooth loose, light weight, porous and adsorptivity, characteristic that permeability is strong, do not contain harmful chemical substance.Because kieselguhr has good heat stability, to the low conductibility and the barrier action of heat, is the inert matter in the combustion process; After joining diatomite powder in combustion explosion zone and flame mix, the loose structure contact area quantity that increased itself and free radical sharply reduce, cause the chain reaction interruption of burning; Powder particle contacts with free radical in the flame; Kieselguhr is peculiar, is adsorbed on powder surface to a large amount of free radicals, thereby makes free radical suppress gas explosion.In addition, can strengthen its dispersiveness and suspension in the combustion explosion system.
With a kind of powder explosion-suppressing material, particle diameter is more little, and specific area is big more, and datonation-inhibition effect is good more.The diatomaceous particle size of natural nano pore structure material is little; The space is flourishing, can be to the generation intense absorption effect of free radical, and the active centre concentration of chain reaction reduces greatly; The depletion rate of free radical reaches the purpose of interrupting the blast chain reaction greater than growth rate.Die natural nano pore structure material kieselguhr as one of composite monomer.
Claims (5)
1. the high quick-fried coal dust Explosion suppressant of a mine is characterized in that, comprises that following raw materials by weight percent processes:
Al (OH)
3: 10-30%, kieselguhr: 10-30%, APP: 40-70%.
2. the high quick-fried coal dust Explosion suppressant of mine according to claim 1 is characterized in that, comprises that following raw materials by weight percent processes: Al (OH)
3: 20%, kieselguhr: 20%, APP: 60%.
3. the high quick-fried coal dust Explosion suppressant of mine according to claim 2 is characterized in that, comprises that following raw materials by weight percent processes: Al (OH)
3: 25%, kieselguhr: 25%, APP: 50%.
4. the preparation method of the high quick-fried coal dust Explosion suppressant of mine is characterized in that, gets raw material A l (OH) by weight percentage
3: 10-30%, kieselguhr: 10-30%, APP: 40-70% is ground into powder respectively, mixes then, and mixed product drying can be obtained finished product.
5. the preparation method of the high quick-fried coal dust Explosion suppressant of a kind of mine according to claim 4 is characterized in that, gets raw material A l (OH) by weight percentage
3: 20%, kieselguhr: 20%, APP: 60%, be ground into powder respectively, mix then, mixed product drying can be obtained finished product.
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| CN2011104587815A CN102562123A (en) | 2011-12-31 | 2011-12-31 | Mine high-explosive coal dust explosion suppressant and preparation method thereof |
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| CN2011104587815A CN102562123A (en) | 2011-12-31 | 2011-12-31 | Mine high-explosive coal dust explosion suppressant and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105324551A (en) * | 2013-01-09 | 2016-02-10 | 英默里斯颜料公司 | Treatment for non-caking mine rock dust |
| CN105781605A (en) * | 2016-03-31 | 2016-07-20 | 李飞 | Explosion suppressant and preparation method thereof |
| CN105884323A (en) * | 2016-03-30 | 2016-08-24 | 河南理工大学 | Red mud-based composite explosion suppression material and preparation method thereof |
| CN108640119A (en) * | 2018-05-29 | 2018-10-12 | 西安建筑科技大学 | A kind of inerting powder preparation method inhibiting starch detonation |
| CN109666669A (en) * | 2018-12-21 | 2019-04-23 | 滨州学院 | A kind of preparation method and application method of the dust Explosion suppressant based on microbial capsules |
| CN109736874A (en) * | 2018-12-29 | 2019-05-10 | 武汉理工大学 | A kind of NEW TYPE OF COMPOSITE gas Explosion suppressant |
| CN109897613A (en) * | 2019-03-07 | 2019-06-18 | 山东科技大学 | A kind of compound Explosion suppressant and preparation method thereof inhibiting oil shale dust explosion |
| CN110566264A (en) * | 2019-10-17 | 2019-12-13 | 重庆大学 | Superfine montmorillonite-based core-shell structure explosion suppressant and preparation method thereof |
| CN110985102A (en) * | 2019-12-24 | 2020-04-10 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN112552873A (en) * | 2020-12-11 | 2021-03-26 | 东北大学 | Method for preparing composite powder explosion suppressant by using waste sludge generated in acrylic fiber generation process |
| CN113509994A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Coal grinding and drying device of pulverized coal gasification system and pulverized coal combustion explosion suppression method thereof |
| CN113719313A (en) * | 2021-09-22 | 2021-11-30 | 重庆大学 | Modified kaolin gas coal dust composite explosion suppressant and preparation method thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105324551A (en) * | 2013-01-09 | 2016-02-10 | 英默里斯颜料公司 | Treatment for non-caking mine rock dust |
| CN105884323A (en) * | 2016-03-30 | 2016-08-24 | 河南理工大学 | Red mud-based composite explosion suppression material and preparation method thereof |
| CN105781605A (en) * | 2016-03-31 | 2016-07-20 | 李飞 | Explosion suppressant and preparation method thereof |
| CN105781605B (en) * | 2016-03-31 | 2018-02-09 | 广州森莱宝实业有限公司 | A kind of Explosion suppressant and preparation method thereof |
| CN108640119B (en) * | 2018-05-29 | 2021-07-20 | 西安建筑科技大学 | Preparation method of inerting powder for inhibiting deflagration of starch |
| CN108640119A (en) * | 2018-05-29 | 2018-10-12 | 西安建筑科技大学 | A kind of inerting powder preparation method inhibiting starch detonation |
| CN109666669A (en) * | 2018-12-21 | 2019-04-23 | 滨州学院 | A kind of preparation method and application method of the dust Explosion suppressant based on microbial capsules |
| CN109736874A (en) * | 2018-12-29 | 2019-05-10 | 武汉理工大学 | A kind of NEW TYPE OF COMPOSITE gas Explosion suppressant |
| CN109897613A (en) * | 2019-03-07 | 2019-06-18 | 山东科技大学 | A kind of compound Explosion suppressant and preparation method thereof inhibiting oil shale dust explosion |
| CN109897613B (en) * | 2019-03-07 | 2023-08-29 | 山东科技大学 | Composite explosion suppressant for suppressing oil shale dust explosion and preparation method thereof |
| CN110566264A (en) * | 2019-10-17 | 2019-12-13 | 重庆大学 | Superfine montmorillonite-based core-shell structure explosion suppressant and preparation method thereof |
| CN110985102A (en) * | 2019-12-24 | 2020-04-10 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN110985102B (en) * | 2019-12-24 | 2021-07-02 | 济南大学 | Sulfuric acid residue composite explosion suppression material for suppressing coal dust explosion and preparation method and application thereof |
| CN113509994A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Coal grinding and drying device of pulverized coal gasification system and pulverized coal combustion explosion suppression method thereof |
| CN112552873A (en) * | 2020-12-11 | 2021-03-26 | 东北大学 | Method for preparing composite powder explosion suppressant by using waste sludge generated in acrylic fiber generation process |
| CN112552873B (en) * | 2020-12-11 | 2022-01-04 | 东北大学 | Method for preparing composite powder explosion suppressant by using waste sludge generated in acrylic fiber generation process |
| CN113719313A (en) * | 2021-09-22 | 2021-11-30 | 重庆大学 | Modified kaolin gas coal dust composite explosion suppressant and preparation method thereof |
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Application publication date: 20120711 |