CN102173652B - Thickening colloid used for treating fire disaster of coal seam - Google Patents
Thickening colloid used for treating fire disaster of coal seam Download PDFInfo
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- CN102173652B CN102173652B CN 201110038864 CN201110038864A CN102173652B CN 102173652 B CN102173652 B CN 102173652B CN 201110038864 CN201110038864 CN 201110038864 CN 201110038864 A CN201110038864 A CN 201110038864A CN 102173652 B CN102173652 B CN 102173652B
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- 239000003245 coal Substances 0.000 title claims abstract description 50
- 239000000084 colloidal system Substances 0.000 title claims abstract description 40
- 230000008719 thickening Effects 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000008399 tap water Substances 0.000 claims abstract description 6
- 235000020679 tap water Nutrition 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000000178 monomer Substances 0.000 claims description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000010881 fly ash Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 10
- 230000002745 absorbent Effects 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 9
- 239000005864 Sulphur Substances 0.000 claims description 9
- 150000001412 amines Chemical class 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 7
- 239000003999 initiator Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000004160 Ammonium persulphate Substances 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 5
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 5
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 12
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 239000000725 suspension Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000015784 hyperosmotic salinity response Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000002427 irreversible effect Effects 0.000 abstract description 2
- 239000002562 thickening agent Substances 0.000 abstract 3
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 229920000247 superabsorbent polymer Polymers 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The invention discloses a thickening colloid used for treating a fire disaster of a coal seam. The thickening colloid is prepared by mutually mixing and uniformly stirring water, aggregates, and a thickening agent according to the following percentage by weight: a certain amount of tap water, the aggregates accounting for 10% to 20% of the weight of water, and the thickening agent accounting for 0.1-0.5% of the weight of water. The thickening agent is salt-tolerant super absorbent polymer prepared by using an aqueous solution polymerizing method. The prepared thickening colloid has advantages of salt tolerance, water-retaining property, adhesive property, suspension property and stability, and can make different active structures and basic groups in coal inert or undergo irreversible reaction to lose oxidizability, and the spontaneous combustion tendency of the coal is lowered so as to thoroughly prevent the spontaneous combustion of the coal. The thickening colloid has advantages of simpilicity for operation, and convenience for material obtaining, is economical and practical and is especially suitable for fundamental fire control of coal mines.
Description
Technical field
The present invention relates to a kind of thickening colloid for coal bed fire hazard treating, belong to downhole coal mine preventing and extinguishing fire technology Application Areas.
Background technology
Spontaneous combustion of coal is a kind of spontaneous phenomenon of outwardness, and the compound liberated heat of coal oxygen is the basic reason that causes spontaneous combustion of coal.Its detailed process is: air enters coal body inside with the coal body crack, the spontaneous compound amount of heat of emitting of coal oxygen, this heat is accumulated under certain accumulation of heat condition, when the heat that gathers can satisfy the needs of Coal Self-ignition Process development, coal temperature constantly rises, and finally causes spontaneous combustion of coal.
China's coal-mine field complicated condition, environment are abominable, and dieseling is serious, totally burns coal amount 4,200,000,000 t, at present still to burn the speed development of 5000～6,000 ten thousand t coals every year.
The grouting preventing and extinguishing fire technology is traditional, simple, a reliable preventing and extinguishing fire technology.So-called grouting preventing and extinguishing fire technology refers to water and injection material are mixed in suitable ratio, be mixed with certain density slurries, utilize spontaneous combustion pressure reduction or mud pumping to the zone that spontaneous combustion of coal may occur through the grout pipe line of laying, to prevent the generation of spontaneous combustion of coal seam phenomenon.Its principle is injection material parcel coal body, absorbs heat, plays that isolated coal contacts with oxygen and the effect of absorbing and cooling temperature.But also there are some problems in this technology, such as slurry can not the uniform fold float coal surface, easily form and draw the ditch phenomenon, coverage rate is little, and the slurry adhesion is poor, only flow to the low position of physical features, the accumulation that can not hoist does not have preventive and therapeutic effect to middle and high and top board coal body, and easily running pulp and the slurry of bursting cause a large amount of dehydrations, worsen the underground work environment, affect ature of coal etc.In addition, slurry and water are also easily separated, and suspension is poor, and not only easy blocking pipeline, and moisture easily evaporates, and with the effect of high temperature coal body the danger that water-gas explodes occur easily, and anti-fire extinguishing effect is not bery desirable.
Design a kind of novel anti-fire extinguishing colloid, improve anti-fire extinguishing effect, guarantee work reliability, just become the subject matter that the present invention will solve.
Summary of the invention
In view of the deficiency that above-mentioned technology exists, the present invention aims to provide that a kind of water absorbent rate is high, good salt tolerance, adhesion is good, water-retentivity is high, and has the thickening colloid that is used for coal bed fire hazard treating of good suspension and stability.
The present invention is achieved through the following technical solutions:
A kind of thickening colloid for coal bed fire hazard treating, formed by mutual mixing and the water that stirs, aggregate and viscosifying agent, wherein, each compositions in weight percentage is: a certain amount of tap water, account for water weight 10～20% aggregate, account for the viscosifying agent of water weight 1～5 ‰; Described viscosifying agent is the anti salt super absorbent resin of water solution polymerization process preparation, anti salt super absorbent resin is with vinylformic acid, acrylamide and 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is monomer, ammonium persulphate is initiator, N ' N-methylene-bisacrylamide is linking agent, sodium hydroxide is neutralizing agent, described monomer mass percentage concentration remains 45%, the mass ratio of vinylformic acid and acrylamide is 3/4, neutralize with NaOH, vinylformic acid degree of neutralization after the neutralization is 65%, described linking agent and initiator are respectively 0.25% with respect to the mass percent of monomer, described 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is 3% with respect to the mass percent of monomer, solution preparation is put into well vacuum drying oven, by the ladder temperature control method, 60 ℃ of insulation 2h, 70 ℃ of insulation 2h, 80 ℃ of insulation 3h are after question response is complete, sample is put into convection oven dry, treat thorough oven dry, be viscosifying agent after the pulverizing stand-by.
Described aggregate is a kind of in loess, flyash, wilkinite, polynite or the diatomite, or described aggregate is by the two or more compositions of mixtures in loess, flyash, wilkinite, polynite or the diatomite.
Thickening colloid for coal bed fire hazard treating of the present invention has following obvious superiority than traditional grouting preventing and extinguishing fire technology:
1, salt tolerance: the viscosifying agent that adopts is a kind of anti salt super absorbent resin, obviously improves than its water absorbent rate in slurry of other viscosifying agent.
2, water-retentivity: thickening colloid all is water more than 80% among the present invention, owing to having added High hydrophilous resin as viscosifying agent, its moisture velocity of evaporation is very slow, has avoided the danger of water-gas blast; Be difficult for running pulp and the slurry of bursting, can not worsen the underground work environment, guaranteed ature of coal.
3, adhesion: thickening colloid sticks superior performance, can pile up aloft, also can play preventive and therapeutic effect to middle and high coal body.
4, suspension: viscosifying agent is a kind of High hydrophilous resin, and its structure is a kind of bodily form reticulated structure, has well disperseed aggregate, is difficult for depositing to BOP, and pipeline is difficult for stopping up, simultaneously, and the thickening colloid stable performance.
5, stability: thickening colloid leaves standstill and did not occur layering and depositional phenomenon in 24 hours, and stable performance is used reliable.
Inventing described thickening colloid for coal bed fire hazard treating in use can be according to factors such as on-site actual situations, use position, spraying operation surface temperatures, prepare the thickening colloid of different viscositys, varying strength, so that the different activities structure in the coal body and group are lost oxidisability by inerting or generation irreversible reaction, coal body spontaneous combustion reduction in propensity been has thoroughly has been prevented and treated the spontaneous combustion of coal.Have simple to operately, draw materials conveniently, economical and practical, be particularly suitable for that the anti-fire extinguishing of essence is carried out in the colliery and administer and use.
Embodiment
A kind of thickening colloid for coal bed fire hazard treating of the present invention is comprised of mutual mixing and stir ground water, aggregate and viscosifying agent.Each compositions in weight percentage is: a certain amount of tap water, account for water weight 10～20% aggregate, account for the viscosifying agent of water weight 1～5 ‰.Wherein, the consumption of tap water can be modulated how much deciding of colloid according to need, and it plays simple solvent action, and aggregate and viscosifying agent add in proportion according to the consumption of tap water.
Aggregate is selected a kind of in loess, flyash, wilkinite, polynite or the diatomite.Certainly, also can select two or more mixing in loess, flyash, wilkinite, polynite or the diatomite.
Viscosifying agent is the anti salt super absorbent resin of water solution polymerization process preparation, and anti salt super absorbent resin is generated by vinylformic acid, acrylamide, ammonium persulphate, N ' N-methylene-bisacrylamide, sodium hydroxide and poly-sulfonic group amphotericeledrolyte polymerization.Poly-sulfonic group amphotericeledrolyte is 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine, by vinylformic acid, acrylamide and 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine compositing monomer, the mass concentration of monomer is 45%, the massfraction of 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is 3%, with being controlled at 65% with acrylic acid degree of neutralization in the sodium hydroxide, the mass ratio of vinylformic acid and acrylamide is 3/4, and is respectively 0.25% of monomer mass mark as the ammonium persulphate of initiator with as N ' the N-methylene-bisacrylamide of linking agent.Anti salt super absorbent resin after adopting water solution polymerization process synthetic can further be determined the synthesis condition that it is best by orthogonal experiment method and ladder-elevating temperature method, to guarantee result of use.
Only need during use water, aggregate and viscosifying agent to be mixed in proportion and to stir, being poured into needs anti-fire extinguishing zone to get final product.
Below in conjunction with embodiment the present invention is further elaborated:
Embodiment 1
Get a certain amount of water, be divided into 5 groups, choose 5 kinds of aggregates, every kind of aggregate is one group, and every kind of aggregate content is 20% of water-content, and aggregate is chosen respectively diameter less than loess, flyash, wilkinite, polynite and the diatomite of 1mm.Add respectively in every group of sample that to account for water weight be 1 ‰ viscosifying agent, then in every group of sample, add a kind of aggregate, stir, get 5 parts of thickening colloid samples.
Wherein, the preparation method of viscosifying agent is: adopt water solution polymerization process, take by weighing with vinylformic acid, a certain amount of monomer that acrylamide and 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine forms, keeping the monomer mass percentage concentration is 45%, neutralize as neutralization reagent with NaOH, the vinylformic acid degree of neutralization is 65%, the mass ratio of vinylformic acid and acrylamide is 3/4, be respectively 0.25% of monomer mass mark as the ammonium persulphate of initiator with as N ' the N-methylene-bisacrylamide of linking agent, 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is 3% of monomer mass mark, mentioned solution prepared put into vacuum drying oven, by the ladder temperature control method, 60 ℃ of insulation 2h, 70 ℃ of insulation 2h, 80 ℃ of insulation 3h, after question response is complete, sample is put into convection oven dry, treat that thorough oven dry can pulverize stand-by.
Above-mentioned each thickening colloid through the test: thickening colloid leave standstill suspension time greater than 24 hours without sedimentation, without demixing phenomenon, do not dewater, never degenerate, viscosity is respectively 25～35mpa.s.
The different-grain diameter coal body is carried out testing permeability: than water, thickening colloid reduces much than water the perviousness of coal, and for the smaller coal sample of particle diameter, its infiltrative reduction is especially remarkable.
Infiltrative testing method is: experiment is 12cm at a diameter, high 25cm, and the bottom is fixed with the Stainless Steel Cloth that the aperture is 0.25mm, and is equipped with in the drum of the high coal sample of 10cm and carries out.During experiment, certain density thickening colloid or water are poured into from cylinder top, thickening colloid or water spill by the Stainless Steel Cloth of coal sample from the bucket bottom, measure at regular intervals the volume that spills liquid, observe its perviousness in coal body.The result shows that thickening colloid spills the volume that volume is significantly less than fugitive water, and its perviousness is poor than water.
Anti-fire extinguishing measure of merit:
Under method one, the high temperature, when water contact high temperature coal body, produce immediately a large amount of steam soaring and rise; The water vapor that thickening colloid at high temperature produces then reduces greatly, and when thickening colloid was sprayed onto on the high temperature coal body, colloid floated over the coal body surface, has to penetrate on a small quantity in the large coal gap, produces a small amount of bubble floating under the high temperature at colloid surface, slowly produces a small amount of steam.
Method two, with 6 containers, contain respectively the experiment of putting out a fire of 1kg water and above-mentioned 5 groups thickening colloid.Fire extinguishing object be two burnings that are respectively charged into the 5kg coal red stove.A stove water goes out, and the B stove goes out with thickening colloid respectively.
The result shows that thickening colloid fire extinguishing successful is better than water fire extinguishing effect, and short, instant effect of time, fire extinguishing are reliable for effect, and therefore, thickening colloid has better anti-extinguishing property.
Embodiment 2
Get a certain amount of water, be divided into 5 groups, choose 5 kinds of aggregates, every kind of aggregate is one group, and every kind of aggregate content is 15% of water-content, and aggregate is chosen respectively diameter less than loess, flyash, wilkinite, polynite and the diatomite of 1mm.Add respectively in every group of sample that to account for water weight be 2 ‰ viscosifying agent, then in every group of sample, add a kind of aggregate, stir, get 5 parts of thickening colloid samples.Its viscosity is respectively 25～40mpa.s.
Concrete operations and testing method are with embodiment 1, and test result is identical with embodiment 1.
Embodiment 3
Get a certain amount of water, be divided into 5 groups, choose 5 kinds of aggregates, every kind of aggregate is one group, and every kind of aggregate content is 10% of water-content, and aggregate is chosen respectively diameter less than loess, flyash, wilkinite, polynite and the diatomite of 1mm.Add respectively in every group of sample that to account for water weight be 3 ‰ viscosifying agent, then in every group of sample, add a kind of aggregate, stir, get 5 parts of thickening colloid samples.Its viscosity is respectively 30～45mpa.s.
Concrete operations and testing method are with embodiment 1, and test result is identical with embodiment 1.
Embodiment 4
Get a certain amount of water, be divided into 5 groups, choose 5 kinds of aggregates, every kind of aggregate is one group, and every kind of aggregate content is 10% of water-content, and aggregate is chosen respectively diameter less than loess, flyash, wilkinite, polynite and the diatomite of 1mm.Add respectively in every group of sample that to account for water weight be 5 ‰ viscosifying agent, then in every group of sample, add a kind of aggregate, stir, get 5 parts of thickening colloid samples.Its viscosity is respectively 40～50mpa.s.
Concrete operations and testing method are with embodiment 1, and test result is identical with embodiment 1.
Embodiment 5
Getting a certain amount of water is 1 group, choose diameter less than loess, flyash and the bentonitic mixture of 1mm as aggregate, aggregate content is 15% of water-content.Add in sample water that to account for water weight be 4 ‰ viscosifying agent, and then add aggregate, stir, get 1 part of thickening colloid sample.Its viscosity is 42～50mpa.s.
Concrete operations and testing method are with embodiment 1, and test result is identical with embodiment 1.
Claims (2)
1. thickening colloid that is used for coal bed fire hazard treating, it is characterized in that, formed by mutual mixing and the water that stirs, aggregate and viscosifying agent, wherein, each compositions in weight percentage is: a certain amount of tap water, account for the diameter of water weight 10～20% less than the aggregate of 1mm, account for the viscosifying agent of water weight 1～5 ‰; Described viscosifying agent is the anti salt super absorbent resin of water solution polymerization process preparation, anti salt super absorbent resin is with vinylformic acid, acrylamide and 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is monomer, ammonium persulphate is initiator, N ' N-methylene-bisacrylamide is linking agent, sodium hydroxide is neutralizing agent, described monomer mass percentage concentration remains 45%, the mass ratio of vinylformic acid and acrylamide is 3/4, neutralize with NaOH, vinylformic acid degree of neutralization after the neutralization is 65%, described linking agent and initiator are respectively 0.25% with respect to the mass percent of monomer, described 3-(Methacrylamide) propyl group-dimethyl (3-sulphur third) amine is 3% with respect to the mass percent of monomer, solution preparation is put into well vacuum drying oven, by the ladder temperature control method, 60 ℃ of insulation 2h, 70 ℃ of insulation 2h, 80 ℃ of insulation 3h are after question response is complete, sample is put into convection oven dry, treat thorough oven dry, be viscosifying agent after the pulverizing stand-by.
2. a kind of thickening colloid for coal bed fire hazard treating according to claim 1, it is characterized in that, described aggregate is a kind of in loess, flyash, wilkinite, polynite or the diatomite, or described aggregate is by the two or more compositions of mixtures in loess, flyash, wilkinite, polynite or the diatomite.
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| CN103203089B (en) * | 2013-03-20 | 2016-04-06 | 北京工业大学 | A kind of colliery extinguish material and preparation method thereof |
| CN105240042B (en) * | 2015-09-23 | 2017-11-03 | 太原理工大学 | A kind of method that utilization phase transformation colloidal sol prevents coal mine gob freely burning fire |
| CN106280164B (en) * | 2016-08-14 | 2018-06-29 | 邢延团 | Mining fire extinguishing high molecular material, mining fire extinguishing gel rubber material and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1931397A (en) * | 2006-10-09 | 2007-03-21 | 西安森兰科贸有限责任公司 | Compound colloid for treating coal bed fire |
| CN101767975A (en) * | 2010-01-29 | 2010-07-07 | 北京工业大学 | Composite gel fire control material for treating coal seam fire |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1931397A (en) * | 2006-10-09 | 2007-03-21 | 西安森兰科贸有限责任公司 | Compound colloid for treating coal bed fire |
| CN101767975A (en) * | 2010-01-29 | 2010-07-07 | 北京工业大学 | Composite gel fire control material for treating coal seam fire |
Non-Patent Citations (2)
| Title |
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| JP特开2000-328456A 2000.11.28 |
| 王立君 等."聚羟乙基丙烯酰胺螯合树脂合成及其对铜离子吸附性研究".《化工生产与技术》.2007,第14卷(第5期),第21-24页. |
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