CN101723641A - Fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of goaf and preparation method thereof - Google Patents
Fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of goaf and preparation method thereof Download PDFInfo
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- CN101723641A CN101723641A CN200910258574A CN200910258574A CN101723641A CN 101723641 A CN101723641 A CN 101723641A CN 200910258574 A CN200910258574 A CN 200910258574A CN 200910258574 A CN200910258574 A CN 200910258574A CN 101723641 A CN101723641 A CN 101723641A
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- pulverized fuel
- fuel ash
- thickened
- ash slurry
- slurry
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- 239000002002 slurry Substances 0.000 title claims abstract description 32
- 239000000446 fuel Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 17
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 9
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 9
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000002956 ash Substances 0.000 claims description 20
- 239000010881 fly ash Substances 0.000 claims description 19
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 12
- 230000008719 thickening Effects 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 11
- 238000002513 implantation Methods 0.000 claims description 10
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 8
- 101710194948 Protein phosphatase PhpP Proteins 0.000 claims description 8
- 229920002472 Starch Polymers 0.000 claims description 8
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims description 8
- 235000019698 starch Nutrition 0.000 claims description 8
- 239000008107 starch Substances 0.000 claims description 8
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 239000002562 thickening agent Substances 0.000 abstract 3
- 238000005299 abrasion Methods 0.000 abstract 2
- 239000002270 dispersing agent Substances 0.000 abstract 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 abstract 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 abstract 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 abstract 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 229940080313 sodium starch Drugs 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 13
- 230000002269 spontaneous effect Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000007613 slurry method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000537371 Fraxinus caroliniana Species 0.000 description 1
- 235000010891 Ptelea trifoliata Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention relates to fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of a goaf and a preparation method thereof. The thickened pulverized fuel ash slurry is prepared by uniformly mixing 70 to 80 water, 18 to 25 pulverized fuel ash, 0.6 to 4 thickening agents and 0.2 to 3 dispersing agents in percentage by mass, wherein the thickening agents can adopt super absorbent resins, acetylized diacid dual sodium starch or hydroxypropyl methyl cellulose, and the dispersing agents can adopt polyvinyl alcohol, sodium tripolyphosphate or sodium hexametaphosphate. The slurry overcomes the defects of easy water and ash separation, easy pipeline blockage, serious pipeline abrasion, serious water accumulation of a working face and the like of the common pulverized fuel ash slurry, the thickening agents are added in the pulverized fuel ash slurry to slow down the sedimentation of the particles of the pulverized fuel ash, prevent a pipe from being blocked and reduce the pipeline abrasion, and the concentration, the water retaining performance and the fire-preventing effect of the slurry can be enhanced. Besides, the thickened pulverized fuel ash slurry is filled along with mining at the implementation goaf of a side-buried pipe of a return airway, and has the effect of favorable leaking stoppage.
Description
Technical field
The present invention relates to a kind of fire prevention leak stopping slurries and preparation method, especially a kind ofly be applicable to that spontaneous combustion of coal and gas under the coal mine are to worked-out section fire prevention leaking-stoppage thickened pulverized fuel ash slurry and preparation method that working face is gushed out.
Background technology
Spontaneous combustion of coal is one of main natural disaster of China's mine.In China state-owned emphasis colliery, the fire that Conflagration Caused by Coal Self-ignition causes accounts for 90% of mine fire sum, provinces such as the Xinjiang of China, Ningxia, Inner Mongol also exist large-area coalfield fire, 1000～1,360 ten thousand tons of annual scaling loss coal amounts, financial loss surpasses 20,000,000,000 yuan, and spontaneous combustion of coal also produces a large amount of SO in addition
2, CO, CO
2Gas, serious environment pollution causes casualties.For this reason, the safety regulations in coal mine regulation, preventative grouting will be carried out in the colliery.Because flyash slip casting facility is simple, cost is low, slurrying is easy, so many collieries are powder application coal ash grouting control spontaneous combustion of coal all, but pulverized fuel ash slurry Zhong Shui and grey separate easily, easily blocking pipeline, make problems such as the serious and working face ponding of pipe wear is serious perplex its application always.
Because flyash do not contain combustiblematerials and oxidizer substantially, belong to inert material, proportion is 0.7, immersion back volume contracts than being 0.586.Stop the mobile mortar precipitation of dewatering immediately, the accumulation body of post precipitation has anti-pressure ability; The particle energy filling minute fissure and the cavity of flyash have the effect every wind and water blockoff, the loose easy-clear of the accumulation body of flyash (after the dehydration), non-corrosiveness.When the pulverized fuel ash slurry in the injection sealed area flows to coal body, just begin the dehydration precipitation.Behind the certain hour, the institute that flyash is full of in the sealed area has living space, and the supply that can reach isolated worked-out section, stop fresh air is wrapped up coal body, prevented the coal oxidation heating, reduce the anti-fire extinguishing purpose of fire district temperature, thereby secluding air plays the effect of anti-fire extinguishing.
In reality grouting, be subjected to the influence of factors such as actual fed distance, grouting way, injection material and season, grouting effect is subjected to the influence of water cement ratio bigger.The too greatly then easy blocking pipeline of cement-water ratio; The too little then water loss of cement-water ratio is big.In a word, there is following problem in existing grouting:
(1) although cement-water ratio is very low, fly ash grain still is easy blocking pipeline, and the pipeline wearing and tearing are big;
(2) pipe wear is serious;
(3) concentration of slurry is low, and anti-fire extinguishing effect is undesirable;
(4) the flyash grouting water yield of taking at present is big, and seeping phenomenon appears in working face haul road easily.
Summary of the invention
The objective of the invention is the problem that exists in the present technology, provide a kind of slurry preparation easy, method is simple, effective worked-out section fire prevention leaking-stoppage thickened pulverized fuel ash slurry material and preparation method.
The thickened pulverized fuel ash slurry of worked-out section of the present invention fire prevention leak stopping: water 70%～80%, flyash 18%～25%, thickening material 0.6～4%, dispersion agent 0.2%～3% mixes by mass percentage.
Described thickening material adopts High hydrophilous resin, the two Starch Sodium of acetylize diacid or Vltra tears; Described dispersion agent adopts polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
The preparation method of the thickened pulverized fuel ash slurry of worked-out section of the present invention fire prevention leak stopping: implantation quality per-cent is 70%～80% water in the slip casting pond, implantation quality per-cent is 18%～25% flyash then, after mixing, add mass percent therein and be 0.6～4% thickening material and mass percent and be 0.2%～3% dispersion agent, stir and promptly make thickened pulverized fuel ash slurry.
Beneficial effect: utilize the filling system of mine, in pulverized fuel ash slurry, add a certain amount of thickening material, form thickened pulverized fuel ash slurry.Problems such as easily separated, the easy blocking pipeline of ordinary fly ash slurry water ash, pipe wear is serious, working face ponding is serious have been overcome, owing to added viscosifying agent, slowed down the fly ash grain sedimentation, prevent plugging, reduce pipe wear, and can improve concentration of slurry, improve the slurries water-retentivity, improve its anti-fire extinguishing effect.Thickened pulverized fuel ash is by implementing the worked-out section with adopting with filling at return airway side pipe laying, thickened pulverized fuel ash has good plugging effect, the passage that leaks out that effectively blocks original worked-out section coal breakage, can the worked-out section near on versant, form the worked-out section coal breakage and the coal ash pulp liquid mixture of a relative closure, effectively reduce leaking out between working face and the worked-out section.The reduction of inleakage, not only can reduce the gas amount of pouring into working face, and the worked-out section fire prevention is had significant meaning, because under identical erecting dense individual props condition, less inleakage can directly influence the scope of worked-out section spontaneous combustion " three bands ", reduces the possibility of worked-out section spontaneous fire.
Embodiment
Embodiment one, water 80%, flyash 18%, High hydrophilous resin, the two Starch Sodium of acetylize diacid or Vltra tears thickening material 1.8%, polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent 0.2%;
Above-mentioned substance is mixed by mass percentage and can use, and concrete preparation method is as follows:
Implantation quality per-cent is 80% water in the slip casting pond at the scene; implantation quality per-cent is 18% flyash then; after mixing; add mass percent therein and be 1.8% two Starch Sodium of High hydrophilous resin, acetylize diacid or Vltra tears thickening material, mass percent and be 0.2% polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent, stir and promptly make thickened pulverized fuel ash slurry.
Embodiment two, water 75%, flyash 21.4%, High hydrophilous resin, the two Starch Sodium of acetylize diacid or Vltra tears thickening material 0.6%, polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent 3%;
Above-mentioned substance is mixed by mass percentage and can use, and concrete preparation method is as follows:
Implantation quality per-cent is 75% water in the slip casting pond; implantation quality per-cent is 21.4% flyash then; after mixing; add mass percent therein and be 0.6% two Starch Sodium of High hydrophilous resin, acetylize diacid or Vltra tears thickening material, mass percent and be 3% polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent, stir and promptly make thickened pulverized fuel ash slurry.
Embodiment three, water 70%, flyash 25%, High hydrophilous resin, the two Starch Sodium of acetylize diacid or Vltra tears thickening material 4%, polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent 1%;
Implantation quality per-cent is 70% water in the slip casting pond at the scene; implantation quality per-cent is 25% flyash then; after mixing; add mass percent therein and be 4% two Starch Sodium of High hydrophilous resin, acetylize diacid or thick dose of Vltra tears, mass percent and be 1% polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 dispersion agent, stir and promptly make thickened pulverized fuel ash slurry.
Claims (4)
1. worked-out section fire prevention leaking-stoppage thickened pulverized fuel ash slurry is characterized in that: water 70%～80%, and flyash 18%～25%, thickening material 0.6～4%, dispersion agent 0.2%～3% mixes by mass percentage.
2. fire prevention leaking-stoppage thickened pulverized fuel ash slurry in worked-out section according to claim 1 is characterized in that: described thickening material adopts High hydrophilous resin, the two Starch Sodium of acetylize diacid or Vltra tears.
3. fire prevention leaking-stoppage thickened pulverized fuel ash slurry in worked-out section according to claim 1, it is characterized in that: described dispersion agent adopts polyvinyl alcohol, tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
4. the preparation method of worked-out section fire prevention leaking-stoppage thickened pulverized fuel ash slurry, it is characterized in that: implantation quality per-cent is 70%～80% water in the slip casting pond, implantation quality per-cent is 18%～25% flyash then, after mixing, add mass percent therein and be 0.6～4% thickening material and mass percent and be 0.2%～3% dispersion agent, stir and promptly make thickened pulverized fuel ash slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910258574A CN101723641A (en) | 2009-12-15 | 2009-12-15 | Fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of goaf and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910258574A CN101723641A (en) | 2009-12-15 | 2009-12-15 | Fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of goaf and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101723641A true CN101723641A (en) | 2010-06-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910258574A Pending CN101723641A (en) | 2009-12-15 | 2009-12-15 | Fire-prevention and leaking-stoppage thickened pulverized fuel ash slurry of goaf and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001886A (en) * | 2010-11-02 | 2011-04-06 | 湖北富邦化工科技有限公司 | Fertilizer additive using pulverized fuel ash as raw material and preparation method thereof |
| CN102443383A (en) * | 2011-09-06 | 2012-05-09 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
| CN103396075A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Flame-retardant paste material for coal mine underground air leakage stoppage and preparation method thereof |
| CN104529353A (en) * | 2014-12-20 | 2015-04-22 | 平顶山市中裕新材料制造有限公司 | Inorganic expansive grouting material for mine gas sealing layer and preparation method of expansive grouting material |
| CN105255448A (en) * | 2015-09-23 | 2016-01-20 | 成都乐维斯科技有限公司 | New material for improving waterproofing and leak stopping efficiencies in grouting construction process, and preparation method thereof |
| AU2014274500B2 (en) * | 2013-07-17 | 2016-01-28 | China University Of Mining And Technology | Method for preparing inhibition slurry containing pulverized fuel ash for controlling fire in coal fields |
| CN108487928A (en) * | 2018-02-05 | 2018-09-04 | 湖南科技大学 | The compound apigenin nanoemulsion material and preparation method thereof that a kind of prevention water storage goaf coal spontaneous is under fire |
| CN108678801A (en) * | 2018-05-25 | 2018-10-19 | 中国矿业大学 | Prevent coal spontaneous combustion coal ash alkali metal-chelating hardening blocking-up type slurry material and preparation method |
| CN108992830A (en) * | 2018-09-06 | 2018-12-14 | 牛俊峰 | A kind of high-adhesiveness hydrogel extinguishing chemical and preparation method thereof |
| CN109809788A (en) * | 2019-03-26 | 2019-05-28 | 中国矿业大学 | A kind of fly ash base goaf grouting material and preparation method thereof |
| CN114349085A (en) * | 2021-12-13 | 2022-04-15 | 山东省煤炭科学研究院有限公司 | High-concentration high-salt water thickening agent and preparation method and use method thereof |
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2009
- 2009-12-15 CN CN200910258574A patent/CN101723641A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001886B (en) * | 2010-11-02 | 2013-01-16 | 湖北富邦科技股份有限公司 | Fertilizer additive using pulverized fuel ash as raw material and preparation method thereof |
| CN102001886A (en) * | 2010-11-02 | 2011-04-06 | 湖北富邦化工科技有限公司 | Fertilizer additive using pulverized fuel ash as raw material and preparation method thereof |
| CN102443383A (en) * | 2011-09-06 | 2012-05-09 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
| CN102443383B (en) * | 2011-09-06 | 2013-04-24 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
| AU2014274500B2 (en) * | 2013-07-17 | 2016-01-28 | China University Of Mining And Technology | Method for preparing inhibition slurry containing pulverized fuel ash for controlling fire in coal fields |
| CN103396075A (en) * | 2013-07-17 | 2013-11-20 | 中国矿业大学 | Flame-retardant paste material for coal mine underground air leakage stoppage and preparation method thereof |
| CN104529353A (en) * | 2014-12-20 | 2015-04-22 | 平顶山市中裕新材料制造有限公司 | Inorganic expansive grouting material for mine gas sealing layer and preparation method of expansive grouting material |
| CN105255448A (en) * | 2015-09-23 | 2016-01-20 | 成都乐维斯科技有限公司 | New material for improving waterproofing and leak stopping efficiencies in grouting construction process, and preparation method thereof |
| CN108487928A (en) * | 2018-02-05 | 2018-09-04 | 湖南科技大学 | The compound apigenin nanoemulsion material and preparation method thereof that a kind of prevention water storage goaf coal spontaneous is under fire |
| CN108678801A (en) * | 2018-05-25 | 2018-10-19 | 中国矿业大学 | Prevent coal spontaneous combustion coal ash alkali metal-chelating hardening blocking-up type slurry material and preparation method |
| CN108992830A (en) * | 2018-09-06 | 2018-12-14 | 牛俊峰 | A kind of high-adhesiveness hydrogel extinguishing chemical and preparation method thereof |
| WO2020048017A1 (en) * | 2018-09-06 | 2020-03-12 | 牛俊峰 | High-adhesion hydrogel extinguishing agent and preparation method thereof |
| CN109809788A (en) * | 2019-03-26 | 2019-05-28 | 中国矿业大学 | A kind of fly ash base goaf grouting material and preparation method thereof |
| CN114349085A (en) * | 2021-12-13 | 2022-04-15 | 山东省煤炭科学研究院有限公司 | High-concentration high-salt water thickening agent and preparation method and use method thereof |
| CN114349085B (en) * | 2021-12-13 | 2023-10-03 | 山东省煤炭科学研究院有限公司 | High-concentration high-salt water thickening treatment agent, and preparation method and application method thereof |
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Application publication date: 20100609 |