CN103387410B - Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof - Google Patents
Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof Download PDFInfo
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- CN103387410B CN103387410B CN201310298775.7A CN201310298775A CN103387410B CN 103387410 B CN103387410 B CN 103387410B CN 201310298775 A CN201310298775 A CN 201310298775A CN 103387410 B CN103387410 B CN 103387410B
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- fly ash
- coal
- flyash
- spontaneous combustion
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
A fly ash solidification foamed material for preventing coal spontaneous combustion and a preparation method thereof. The fly ash solidification foamed material comprises the following ingredients, by weight: 40-60 parts of water, 100 parts of fly ash, 25 parts of complex powder for chemically self-producing gas, 1-5 parts of an accelerator, 1-4 parts of an activator, 0.6-1.5 parts of a water reducer, and 0.5-1 parts of a foam stabilizer. The preparing method comprises: adding the foam stabilizer in water and stirring to form a uniform foam solution; adding the fly ash, the complex powder for chemically self-producing gas, the accelerator, the activator, and the water reducer in a dry-blending mixer to form a blended powder; and finally adding the blended powder into the uniform foam solution to obtain the fly ash solidification foamed material. The material of the invention is light in weight, safe and low in costs, and has strong crack penetration capability, adjustable solidification time, great compressive strength, low heat conductivity coefficient, and a good heat insulation effect; foam fluid can uniformly cover loose coal-rock mass; carbon dioxide is released during a foaming reaction process to well dilute the oxygen concentration in residual coal space; and the operation technique is simple.
Description
Technical field
The present invention relates to a kind of cured foam material and preparation method, particularly a kind of flyash cured foam material and preparation method who prevents and treats coal spontaneous combustion.
Background technology
Spontaneous combustion of coal is one of the Major Natural Disasters in colliery, and coal production and miner's life security in serious threat.Coalfield fire is mainly because the ground crack oxygen supply of leaking out causes spontaneous combustion of coal.Under mine coal spontaneous combustion mainly occur in exist leak out passage worked-out section, open-off cut, stop adopting the places such as line, geological structural belt, Gao Mao district, tunnel.In order to prevent and treat spontaneous combustion of coal, the technology such as grouting, noble gas, stopping agent, gel and polyurethane foam are adopted both at home and abroad.But these methods all come with some shortcomings, thick loess grouting technology need consume a large amount of soil, and some lack, and native areas cannot be used and easily downwards seepage flow of slurries, can not shutoff tiny crack; Noble gas, easily with the diffusion of leaking out, is difficult for being trapped in the region of injection; Ammonium salt gel discharges toxic and harmful, and colloid easily chaps; Stopping agent erode downhole equipment and harm workman physical and mental health, anti-fire extinguishing effect neither be very desirable; Organic cured foam is effective but cost is high and require high to envrionment temperature.In recent years, three-phase froth new technology is prevented and treated the spontaneous combustion of coal of mine, and this technology has an enormous advantage than general preventing and extinguishing fire technology and material, can fully meet the needs of anti-fire extinguishing on a large scale.But three-phase froth does not have intensity, unrealized solidifying; And on-the-spot demand sometimes has compared with high-foaming multiple, can solidify and the cured foam material should with some strength comes filling, leak stopping and control spontaneous combustion of coal.
Summary of the invention
The object of the invention is the problem existing for existing spontaneous combustion of coal Prevention Technique, provide that the fine dilution of a kind of energy loses that coal space oxygen concentration, thermal conductivity are low, good heat-insulation effect, operating procedure are simple, the flyash cured foam material of safety, control coal spontaneous combustion that cost is low.
Flyash cured foam material of the present invention, comprises following component and parts by weight: 1 part of water 40-60 part, 100 parts, flyash, the composite powder 25-40 of chemical automatic gas-producing part, accelerating chemicals 3-5 part, activity excitant 2-4 part, water reducer 1-2 part, compound suds-stabilizing agent;
The described composite powder of chemical automatic gas-producing is made by following weight part proportioning: calcium sulfate hemihydrate 24-35 part, and sodium bicarbonate 1-5 part, by both, chemical reaction generation rare gas element occurring is that carbon dioxide makes slurries foaming; Described accelerating chemicals is made by following weight part proportioning: aluminum oxide clinker 1-2 part, and 1 part, sodium carbonate, unslaked lime 1-2 part, described aluminum oxide clinker weight percent is sodium aluminate 94%, aluminum oxide 4%, calcium aluminosilicate 2%; Described activity excitant is made by following weight part proportioning: magnesium oxide 0.8-1.6 part, magnesium chloride 1.2-2.4 part; Described water reducer is for to make by following weight part proportioning: calcium lignin sulphonate 0.5-1 part, naphthalenesulfonate formaldehyde condensation compound 0.5-1 part, described naphthalenesulfonate formaldehyde condensation compound Na2SO4 content <3%; Described compound suds-stabilizing agent is made by following weight part proportioning: 0.2 part of butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose; Regulate set time by the weight fraction of adjusting between accelerating chemicals, activity excitant, water reducer.
The preparation process of flyash cured foam material of the present invention is:
Step 1: in special mixing vessel A, add 0.2 part of water 40-60 part, butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose, agitator is with 3000 ± 100 revs/min of rotational speed, and churning time is 2min, forms even bubble liquid;
Step 2: add 100 parts, flyash in stirrer B being dry mixed, aluminum oxide clinker 1-2 part, 1 part, sodium carbonate, unslaked lime 1-2 part, magnesium oxide 0.8-1.6 part, magnesium chloride 1.2-2.4 part, calcium lignin sulphonate 0.5-1 part, naphthalenesulfonate formaldehyde condensation compound 0.5-1 part, agitator is with 3000 ± 100 revs/min of rotational speed, churning time is 3min, forms mixed powder;
Step 3: the mixed powder being dry mixed in stirrer B is mixed in the even bubble liquid adding in special mixing vessel A, special mixing vessel A agitator is with 12000 ± 500 revs/min of rotational speed, churning time is 2min, form mixed serum, leave standstill foaming, be prepared into the flyash cured foam material for preventing and treating coal spontaneous combustion.
Beneficial effect, owing to having adopted such scheme, the present invention, by calcium sulfate hemihydrate, sodium bicarbonate, chemical reaction generation rare gas element occurs in water is that carbon dioxide makes slurries foaming, adopting compound suds-stabilizing agent is butyl glycol ether, nano-silicon, hydroxyl base Mierocrystalline cellulose composite make solid phase particles in slip liquid dispersed, suspend, by adjusting accelerating chemicals, activity excitant, weight fraction between water reducer regulates set time, the final flyash cured foam fluid materials forming, its lightweight, foam expansion is 8～15 times, foam stream physical efficiency uniform fold is on loose coal rock mass, crack penetrating power is strong, set time is adjustable, ultimate compression strength is large, be greater than 1.5Mpa, in foamable reaction process, can discharge a certain amount of rare gas element is that carbon dioxide can play good dilution something lost coal space oxygen concentration, thermal conductivity is low, can play good effect of heat insulation, operating procedure is simple, safety, cost is low.Can wrap up fast coal body starvation, effectively leak out passage and coal body crack of shutoff, prevents and treats the oxidation of coal, and to spontaneous combustion of coal, preventing and controlling are significant this material.
Compared with prior art, tool of the present invention has the following advantages:
(1) the present invention prevents and treats the flyash cured foam material of coal spontaneous combustion, adopt calcium sulfate hemihydrate, sodium bicarbonate, the self-produced foam of water three's chemical reaction system, the rare gas element (carbonic acid gas) that three all belongs to environmental friendliness shaped material and generation can play to oxidization of remained coal space the effect of dilution oxygen concentration;
(1) the present invention prevents and treats the flyash cured foam material of coal spontaneous combustion, and main raw material(s) is flyash, calcium sulfate hemihydrate, and the wide material sources such as sodium bicarbonate, operating procedure is simple;
(2) the present invention prevents and treats the flyash cured foam material of coal spontaneous combustion, and aerated fluid is good to coal body parcel performance, good to crack penetrating quality, and setting time is adjustable;
(3) the present invention prevents and treats the flyash cured foam material of coal spontaneous combustion, lightweight (foam expansion is 8～15 times), ultimate compression strength large (being greater than 1.5Mpa), thermal conductivity is low, can play good effect of heat insulation, has suitability widely in coal spontaneous combustion prevention and control field.
Embodiment
Embodiment 1: this flyash cured foam material, comprises following component and parts by weight: 1 part of water 40-60 part, 100 parts, flyash, the composite powder 25-40 of chemical automatic gas-producing part, accelerating chemicals 3-5 part, activity excitant 2-4 part, water reducer 1-2 part, compound suds-stabilizing agent;
The described composite powder of chemical automatic gas-producing is by calcium sulfate hemihydrate, and sodium bicarbonate composition, reacts in water by both and produce carbonic acid gas, and slurries are foamed.Both make by following weight part proportioning: calcium sulfate hemihydrate 24-35 part, sodium bicarbonate 1-5 part; Described accelerating chemicals is aluminum oxide clinker, sodium carbonate, unslaked lime composition, three makes by following weight part proportioning: aluminum oxide clinker 1-2 part, 1 part, sodium carbonate, unslaked lime 1-2 part, described aluminum oxide clinker weight percent is sodium aluminate 94%, aluminum oxide 4%, calcium aluminosilicate 2%; Described activity excitant is magnesian solidifying agent, is magnesium oxide and magnesium chloride composition, and both make by following weight part proportioning: magnesium oxide 0.8-1.6 part, magnesium chloride 1.2-2.4 part; Described water reducer is calcium lignin sulphonate and naphthalenesulfonate formaldehyde condensation compound, and both make by following weight part proportioning: calcium lignin sulphonate 0.5-1 part, naphthalenesulfonate formaldehyde condensation compound 0.5-1 part, described naphthalenesulfonate formaldehyde condensation compound Na
2sO4 content <3%; Described compound suds-stabilizing agent is by butyl glycol ether, nano-silicon, hydroxyl base Mierocrystalline cellulose three is composite, make by following weight part proportioning: 0.2 part of butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose, this compound suds-stabilizing agent can make the solia particle in slip dispersed, suspend and to reduce the upper, middle and lower volume density of flyash cured foam poor, make even air hole distribution, significantly improve air hole structure, reduce string hole.
Embodiment 2: first, in special mixing vessel A, adding 50 parts, water, 0.2 part of butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose, agitator is with 3000 ± 100 revs/min of rotational speed, and churning time is 2min, forms even bubble liquid; Then, add 100 parts, flyash, 1 part of aluminum oxide clinker, 1 part, sodium carbonate, 1 part of unslaked lime, 1.2 parts, magnesium oxide, 1.8 parts, magnesium chloride being dry mixed in stirrer B, 0.5 part of calcium lignin sulphonate, 0.5 part of naphthalenesulfonate formaldehyde condensation compound, described naphthalenesulfonate formaldehyde condensation compound Na
2sO4 content <3%, described aluminum oxide clinker weight percent is sodium aluminate 94%, aluminum oxide 4%, calcium aluminosilicate 2%, and agitator is with 3000 ± 100 revs/min of rotational speed, and churning time is 3min, forms mixed powder; Finally, the mixed powder being dry mixed in stirrer B is mixed in the even bubble liquid adding in special mixing vessel A, special mixing vessel A agitator is with 12000 ± 500 revs/min of rotational speed, churning time is 2min, form mixed serum, leave standstill foaming, be prepared into the flyash cured foam material for preventing and treating coal spontaneous combustion.The flyash cured foam fluid of the control spontaneous combustion of coal preparing is injected into and is needed the coalfield of wind leaking stoppage fire ground crack by transfer line with the ground moving grouting pump of 3MPa, coal body is covered, play minimizing and control and leak out, thus prevention spontaneous combustion of coal.
Embodiment 3: first, in special mixing vessel A, adding 60 parts, water, 0.2 part of butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose, agitator is with 3000 ± 100 revs/min of rotational speed, and churning time is 2min, forms even bubble liquid; Then, in stirrer B, add 100 parts, flyash being dry mixed, 2 parts of aluminum oxide clinkers, 1 part, sodium carbonate, 2 parts of unslaked limes, 1.6 parts, magnesium oxide, 2.4 parts, magnesium chloride, 1 part of calcium lignin sulphonate, 1 part of naphthalenesulfonate formaldehyde condensation compound, described naphthalenesulfonate formaldehyde condensation compound Na2SO4 content <3%, described aluminum oxide clinker weight percent is sodium aluminate 94%, aluminum oxide 4%, calcium aluminosilicate 2%, agitator is with 3000 ± 100 revs/min of rotational speed, churning time is 3min, forms mixed powder; Finally, the mixed powder being dry mixed in stirrer B is mixed in the even bubble liquid adding in special mixing vessel A, special mixing vessel A agitator is with 12000 ± 500 revs/min of rotational speed, churning time is 2min, form mixed serum, leave standstill foaming, be prepared into the flyash cured foam material for preventing and treating coal spontaneous combustion.With the underground mobile grouting pump of 2MPa, the flyash cured foam fluid of the control spontaneous combustion of coal preparing is injected to the worked-out section inlet well of construction by transfer line, arrival loose coal surface, play the isolated compound effect of coal oxygen, thus prevention spontaneous combustion of coal.
Claims (1)
1. prevent and treat the flyash cured foam material of coal spontaneous combustion for one kind, it is characterized in that: this flyash cured foam material, comprises following component and parts by weight: 1 part of water 40-60 part, 100 parts, flyash, the composite powder 25-40 of chemical automatic gas-producing part, accelerating chemicals 3-5 part, activity excitant 2-4 part, water reducer 1-2 part, compound suds-stabilizing agent;
The described composite powder of chemical automatic gas-producing is made by following weight part proportioning: calcium sulfate hemihydrate 24-35 part, and sodium bicarbonate 1-5 part, by both, chemical reaction generation rare gas element occurring is that carbon dioxide makes slurries foaming; Described accelerating chemicals is made by following weight part proportioning: aluminum oxide clinker 1-2 part, and 1 part, sodium carbonate, unslaked lime 1-2 part, described aluminum oxide clinker weight percent is sodium aluminate 94%, aluminum oxide 4%, calcium aluminosilicate 2%; Described activity excitant is made by following weight part proportioning: magnesium oxide 0.8-1.6 part, magnesium chloride 1.2-2.4 part; Described water reducer is for to make by following weight part proportioning: calcium lignin sulphonate 0.5-1 part, naphthalenesulfonate formaldehyde condensation compound 0.5-1 part, described naphthalenesulfonate formaldehyde condensation compound Na
2sO4 content <3%; Described compound suds-stabilizing agent is made by following weight part proportioning: 0.2 part of butyl glycol ether, 0.3 part of nano-silicon, hydroxyl 0.5 part of base Mierocrystalline cellulose; Regulate set time by the parts by weight of adjusting between accelerating chemicals, activity excitant, water reducer.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298775.7A CN103387410B (en) | 2013-07-17 | 2013-07-17 | Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof |
| RU2014143658/03A RU2588588C2 (en) | 2013-07-17 | 2014-03-26 | Hardening foam material containing coal ash, for preventing coal self-ignition and preparation method thereof |
| AU2014292751A AU2014292751B2 (en) | 2013-07-17 | 2014-03-26 | Coal ash solidification foam material used for prevention and treatment of spontaneous combustion of coal and preparation method therefor |
| PCT/CN2014/074075 WO2015007104A1 (en) | 2013-07-17 | 2014-03-26 | Coal ash solidification foam material used for prevention and treatment of spontaneous combustion of coal and preparation method therefor |
| CA2879374A CA2879374C (en) | 2013-07-17 | 2014-03-26 | Coal ash solidified foam material for preventing spontaneous combustion of coal and preparation method thereof |
| ZA2014/08380A ZA201408380B (en) | 2013-07-17 | 2014-11-13 | Coal ash solidification foam material used for prevention and treatment of spontaneous combustion of coal and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298775.7A CN103387410B (en) | 2013-07-17 | 2013-07-17 | Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103387410A CN103387410A (en) | 2013-11-13 |
| CN103387410B true CN103387410B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310298775.7A Active CN103387410B (en) | 2013-07-17 | 2013-07-17 | Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN103387410B (en) |
| AU (1) | AU2014292751B2 (en) |
| CA (1) | CA2879374C (en) |
| RU (1) | RU2588588C2 (en) |
| WO (1) | WO2015007104A1 (en) |
| ZA (1) | ZA201408380B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387410B (en) * | 2013-07-17 | 2014-10-15 | 中国矿业大学 | Fly ash solidification foamed material for preventing coal spontaneous combustion and preparation method thereof |
| CN103964766B (en) * | 2014-04-29 | 2016-09-14 | 胡相明 | Flyash-cement foam material of preventing and treating spontaneous combustionof coal and preparation method thereof |
| CN104446624B (en) * | 2014-11-26 | 2016-08-17 | 高万水 | Colliery reinforces compositions and using method thereof and purposes with inorganic foamed filling |
| CN106437817B (en) * | 2015-08-12 | 2019-01-04 | 华北科技学院 | It is a kind of to have the coal road filling colloidal materials and its application method for relapsing function |
| CN108678801B (en) * | 2018-05-25 | 2020-04-14 | 中国矿业大学 | Blocking type slurry material for preventing and treating coal spontaneous combustion fly ash alkali metal chelation hardening |
| CN110564391B (en) * | 2019-08-31 | 2021-06-29 | 湖南科技大学 | Nano microbubble material for in-situ consolidation modification of pulverized coal and preparation method thereof |
| CN111153657A (en) * | 2020-02-21 | 2020-05-15 | 济南鸿运保温材料有限公司 | Building energy-saving foaming insulation board and preparation method thereof |
| CN113213821B (en) * | 2021-06-07 | 2022-03-25 | 中国矿业大学 | High-stability colloidal foam for inhibiting self-heating of oxidation of loose coal body and preparation method thereof |
| CN115120922B (en) * | 2022-06-27 | 2023-05-16 | 中煤科工集团西安研究院有限公司 | Modified gangue-based fire prevention and extinguishment three-phase foam material, preparation method and application |
| CN115337588B (en) * | 2022-09-16 | 2023-06-16 | 中国矿业大学 | Fly ash-based fire preventing and extinguishing material for mineralizing and sequestering carbon dioxide and preparation method thereof |
| CN115849839B (en) * | 2022-11-24 | 2023-10-31 | 湖南科技大学 | Repairing foam for goaf closed fracture plugging and preparation method thereof |
| CN115925381A (en) * | 2022-11-28 | 2023-04-07 | 中国矿业大学 | Calcium-based solid waste light composite slurry for coal mine disaster reduction and carbon dioxide sequestration and preparation and use methods thereof |
| CN115970220A (en) * | 2023-02-07 | 2023-04-18 | 湖南科技大学 | Inorganic curing foam for preventing and treating forest fire and preparation method thereof |
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- 2014-03-26 RU RU2014143658/03A patent/RU2588588C2/en not_active IP Right Cessation
- 2014-03-26 AU AU2014292751A patent/AU2014292751B2/en not_active Ceased
- 2014-03-26 CA CA2879374A patent/CA2879374C/en not_active Expired - Fee Related
- 2014-03-26 WO PCT/CN2014/074075 patent/WO2015007104A1/en active Application Filing
- 2014-11-13 ZA ZA2014/08380A patent/ZA201408380B/en unknown
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2588588C2 (en) | 2016-07-10 |
| CA2879374A1 (en) | 2015-01-22 |
| WO2015007104A1 (en) | 2015-01-22 |
| CA2879374C (en) | 2017-05-02 |
| RU2014143658A (en) | 2016-05-20 |
| ZA201408380B (en) | 2016-02-24 |
| AU2014292751B2 (en) | 2016-02-25 |
| CN103387410A (en) | 2013-11-13 |
| AU2014292751A1 (en) | 2015-02-19 |
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