CN109970398A - Underground mine use high water filling material and preparation method thereof and device - Google Patents
Underground mine use high water filling material and preparation method thereof and device Download PDFInfo
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- CN109970398A CN109970398A CN201811598965.XA CN201811598965A CN109970398A CN 109970398 A CN109970398 A CN 109970398A CN 201811598965 A CN201811598965 A CN 201811598965A CN 109970398 A CN109970398 A CN 109970398A
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- calcium fly
- cement
- coal gas
- fly ass
- filling material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of underground mine use high water filling material and preparation method thereof and devices.Filler of the invention is prepared by high-calcium fly ass, coal gas slugging, cement, water and additive.Preparation method of the invention includes first being added to the water high-calcium fly ass, adds additive, is placed 8-48 hours after mixing evenly；Then, coal gas slugging and cement uniform mixing is added.The inventive system comprises: high-calcium fly ass pretreatment pool, cement batch can, coal gas slugging conveyer and blender and conveyance conduit.The invention enables the conventional work China Democratic National Construction Association non-serviceable high-calcium fly ass of material to be applied, solve the problems, such as that high-calcium fly ass stability is bad, high-calcium fly ass contains a large amount of coal gas slugging in conjunction with water and high-moisture after abundant aquation resolution and ordinary portland cement forms high water filling material, turn waste into wealth, it is low in cost, avoid the high cost problem for causing filler using sulphate aluminium cement.
Description
Technical field
The present invention relates to underground mine use material, in particular to a kind of underground mine use high water filling material and its preparation side
Method and device.
Background technique
With the fast development of the development of the national economy, society is increasing to the demand of coal resources, and coal enterprise exists
While coal production is continuously improved, " under three " press the problems such as coal bring Mining Area is nervous, and mine service-life shortens
Gradually show, while Diggings soil caused by large-scale exploitation collapses, damaged house, ecological environmental pollution etc. are a series of
Problem also becomes the bottleneck for restricting Sustainable Development in Mining Areas.Solving coal mining causes overlying rock is mobile to cause with subsidence
A series of problems, the most key technology is effectively filled to goaf.
Filler in existing coal fill-type recovery process mainly has gangue to fill filler, drift-sand filling material
Material, high-water material filler.Wherein high water filling material uses sulfuric acid acid salt cement and gypsum as cementitious material, flyash
Equal industrial wastes etc. are as gathering materials, and the filler volumetric(al) moisture content of preparation is big, and saving is gathered materials, but filling intensity is low, cost
It is high.Also, existing filler easily causes the risk of pollution mine water, does not take corresponding environmental protection measure in operation.
Summary of the invention
For the defects or inadequacies for existing technologies, the present invention provides a kind of underground mine use filler and preparation method thereof
With device.
Underground mine use high water filling material provided by the invention is prepared from the following materials:
High-calcium fly ass: 200-800 mass parts；
Coal gas slugging: 600-1200 mass parts；
Cement: 80-220 mass parts；
Water: 200-700 mass parts；
Additive: 10-30 mass parts；
Calcium oxide mass content is greater than 8wt% in the high-calcium fly ass.
Preferably, there are also unvaporized charcoal substance 20-60wt%, moisture content 20-50wt% in coal gas slugging of the invention.
Preferably, additive of the present invention is one or more of concrete pump-feed agent, water-reducing agent and early strength agent
Composition.
Preparation method provided by the invention includes: first to be added to the water high-calcium fly ass and additive, after mixing evenly
It places 8-48 hours；Then, coal gas slugging and cement uniform mixing is added.
The present invention provides device
High-calcium fly ass pretreatment pool: for being pre-processed to high-calcium fly ass；
Cement batch can: storing and conveys cement；
Coal gas slugging conveyer: for conveying coal gas slugging；
Blender: for being stirred mixing to coal gas slugging, cement and pretreated high-calcium fly ass；
Conveyance conduit: the filler after stirrer for mixing is delivered to operating location.
Preferably, high-calcium fly ass pretreatment pool of the invention setting is arranged in below ground, the cement batch can pre-
Above processing pond, the blender setting is in cement batch can side, and the coal gas slugging conveyer is arranged above blender, institute
State the discharge port of conveyance conduit connection blender；The high-calcium fly ass pretreatment fluid is conveyed into blender by slush pump.
Further, blender is installed in high-calcium fly ass pretreatment pool in apparatus of the present invention.
Effect of the invention:
Present invention high-calcium fly ass after pretreatment contain a large amount of coal gas slugging in conjunction with water and high-moisture and
Ordinary portland cement forms high water filling material, low in cost, avoids and causes filler using sulphate aluminium cement
High cost problem.
Also, 7 days compression strength of filler of the invention is 5-15Mpa, and the mechanics that can meet underground coal mine filling is wanted
It asks.
Meanwhile it is of the invention the cost of material is low, be existing sulphate aluminium cement one third or so, it is good in economic efficiency, it is real
Show solid wastes recycling, it is with good economic efficiency.
In addition, material of the invention has good organic pollutant, again due to the coal gas slugging for containing porous carbonizable substance
Metal adsorption effect, therefore, such filler have good environment protecting, have to mine water and intercept pollutant and absorption
The characteristic of pollutant, environmental effect are good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
Unless otherwise indicated, scientific and technical terminology herein routinely understands according to this field.
The present invention uses high-calcium fly ass pretreatment mode, is handled by pulverized burned coal ash hydration resolution, Free water is integrated to
In flyash, high water raw material is obtained, it is big to form filler volumetric water content for coal gas slugging and cementitious composite with High water cut
The big raising of width, and intensity can achieve requirement.
When coal gas slugging of the invention is air flow bed high temperature and pressure coal gasification, coal ash substance is melted the resulting glass of rear water quenching
Glass solid slag contains unvaporized charcoal substance 20-60wt%, moisture content 20-50wt%；
High-calcium fly ass of the invention be calcium oxide be greater than 8wt% flyash, can be selected for fluidized bed high-calcium fly ass,
Coal-powder boiler high-calcium fly ass, the out of stock high-calcium fly ass of desulfurization etc..
The moisture determination method of material of the present invention is: 400 DEG C of heat treatment for solidification fillers, material after measurement heat treatment
Weight loss calculate the water content of material, be converted into volumetric(al) moisture content later.
Dimethyl indigo plant adsorption rate measuring method of the present invention is: the filler of preparation is immersed in containing pollutant
The concentration of dimethyl indigo plant is in the aqueous solution of a ten thousandth, blue dense of dimethyl in water after being impregnated 24 hours using spectrographic determination
Degree variation calculates filler to dimethyl indigo plant adsorption rate.
Embodiment 1:
In 200 kilograms and 10 kilograms of additive 200 kg of water of addition of high-calcium fly ass, stir evenly, after placing 8 hours,
80 kilograms and 600 kilograms of coal gas slugging of cement are added, the filler that can be used for underground coal mine is obtained after uniform mixing.
It will test, the compression strength of the material is 10Mpa, no cracking and fragmentation phenomenon；Volumetric water content 70%；Dimethyl
Blue adsorption rate 2%.
Embodiment 2:
600 kilograms and 20 kilograms of additive of high-calcium fly ass are added in 450 kilograms of water, stir evenly, place 24 hours
Afterwards, 180 kilograms and 750 kilograms of coal gas slugging of cement are added, the material that can be used for filling coal mine is obtained after uniform mixing.
The compression strength for measuring the material is 12Mpa, no cracking and fragmentation phenomenon；Volumetric water content 75%；Dimethyl is blue
Adsorption rate 3%.
Embodiment 3:
In 800 kilograms and 30 kilograms of additive 700 kg of water of addition of high-calcium fly ass, stir evenly, after placing 48 hours,
220 kilograms and 1200 kilograms of coal gas slugging of cement are added, the material that can be used for filling coal mine is obtained after uniform mixing.
The compression strength for measuring the material is 11Mpa, no cracking and fragmentation phenomenon；Volumetric water content 77%；Dimethyl is blue
Adsorption rate 73%.
Embodiment 4:
In 500 kilograms and 19 kilograms of additive 450 kg of water of addition of high-calcium fly ass, stir evenly, after placing 16 hours,
160 kilograms and 600 kilograms of coal gas slugging of cement are added, the material that can be used for filling coal mine is obtained after uniform mixing.
Measuring compression strength is 9Mpa, no cracking and fragmentation phenomenon；Volumetric water content 69%；Dimethyl indigo plant adsorption rate
63%.
Comparative example 1:
It according to the scheme of embodiment 4, is a difference in that: high-calcium fly ass not being pre-processed, directly mix each raw material
After conjunction, resulting materials are defeated and dispersed, without intensity.
Embodiment 5:
A kind of specific filler preparation facilities, as shown in Figure 1, main component include high-calcium fly ass pretreatment pool 9,
Cement batch can 1, coal gas slugging conveyer 3, blender 4 and conveyance conduit 7.
Consider that compactedness and the occupied area of device structure are small, the setting of general high-calcium fly ass pretreatment pool ground with
Under, cement batch can, coal gas slugging conveyer and blender installation are on the ground.Conveyance conduit is installed according to job requirements.Into one
Step is is equipped with blender 2 in pond convenient for automated job.
A kind of specific spatial arrangement structure is that high-calcium fly ass pretreatment pool is arranged in below ground, and cement batch can is set
It sets above pretreatment pool, blender setting is arranged above blender in cement batch can side, coal gas slugging conveyer, conveying
The discharge port of pipeline connection blender；High-calcium fly ass pretreatment fluid is conveyed into blender by slush pump 8.
It when work, requires to add high-calcium fly ass and water in pretreatment pool according to technique, place after mixing evenly enough
After time, generally 8-48 hour, pretreated flyash feed liquid is conveyed into blender using slush pump, and by cement
It is conveyed into blender with coal gas slugging, is sent to operation by material pump 6 through conveyance conduit after stirring 10-60 seconds uniformly through discharge port 5
Point.
Claims (7)
1. a kind of underground mine use high water filling material, which is characterized in that the filler is prepared from the following materials:
High-calcium fly ass: 200-800 mass parts；
Coal gas slugging: 600-1200 mass parts；
Cement: 80-220 mass parts；
Water: 200-700 mass parts；
Additive: 10-30 mass parts；
Calcium oxide mass content is greater than 8wt% in the high-calcium fly ass.
2. underground mine use high water filling material as described in claim 1, which is characterized in that there are also not in the coal gas slugging
Gasification charcoal material mass ratio is 20-60wt%, and moisture content mass ratio is 20-50wt%.
3. underground mine use high water filling material as described in claim 1, which is characterized in that the additive is concrete pump
Send the composition of one or more of agent, water-reducing agent and early strength agent.
4. a kind of preparation method of underground mine use high water filling material, which is characterized in that method includes: first by high calcium fine coal
Ash and additive are added to the water, and place 8-48 hours after mixing evenly；Then, coal gas slugging and cement uniform mixing is added.
5. a kind of preparation facilities of underground mine use high water filling material, which is characterized in that device includes:
High-calcium fly ass pretreatment pool: for being pre-processed to high-calcium fly ass；
Cement batch can: storing and conveys cement；
Coal gas slugging conveyer: for conveying coal gas slugging；
Blender: for being stirred mixing to coal gas slugging, cement and pretreated high-calcium fly ass；
Conveyance conduit: the filler after stirrer for mixing is delivered to operating location.
6. the preparation facilities of underground mine use high water filling material as claimed in claim 5, which is characterized in that the high-calcium powder
The setting of coal ash pretreatment pool is arranged above pretreatment pool in below ground, the cement batch can, and the blender is arranged in water
Pug tank side, the coal gas slugging conveyer are arranged above blender, the discharge port of the conveyance conduit connection blender；
The high-calcium fly ass pretreatment fluid is conveyed into blender by slush pump.
7. such as the preparation facilities of underground mine use high water filling material described in claim 5 or 6, which is characterized in that the height
Blender is installed in calcium fly ash pretreatment pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598965.XA CN109970398A (en) | 2018-12-26 | 2018-12-26 | Underground mine use high water filling material and preparation method thereof and device |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201811598965.XA CN109970398A (en) | 2018-12-26 | 2018-12-26 | Underground mine use high water filling material and preparation method thereof and device |
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| CN109970398A true CN109970398A (en) | 2019-07-05 |
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| CN201811598965.XA Pending CN109970398A (en) | 2018-12-26 | 2018-12-26 | Underground mine use high water filling material and preparation method thereof and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604655A (en) * | 2020-11-27 | 2021-04-06 | 天津市城市新海绵环保科技有限公司 | Application of coal-based gasified slag, composite porous adsorption base material and preparation method thereof |
| CN113292305A (en) * | 2021-06-24 | 2021-08-24 | 内蒙古工业大学 | Alkali-activated high-water mine filling material based on multiple solid waste synergies and preparation method thereof |
| CN113511874A (en) * | 2021-05-13 | 2021-10-19 | 贵州理工学院 | High-water filling material for underground coal mine and preparation device thereof |
| CN114349405A (en) * | 2022-01-14 | 2022-04-15 | 于立安 | Composition for preparing filling material, preparation method of filling material and method for filling mine |
| CN116835950A (en) * | 2022-03-23 | 2023-10-03 | 国家能源投资集团有限责任公司 | Mining sealing material and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604655A (en) * | 2020-11-27 | 2021-04-06 | 天津市城市新海绵环保科技有限公司 | Application of coal-based gasified slag, composite porous adsorption base material and preparation method thereof |
| CN112604655B (en) * | 2020-11-27 | 2022-06-14 | 天津市城市新海绵环保科技有限公司 | Application of coal-based gasified slag, composite porous adsorption base material and preparation method thereof |
| CN113511874A (en) * | 2021-05-13 | 2021-10-19 | 贵州理工学院 | High-water filling material for underground coal mine and preparation device thereof |
| CN113292305A (en) * | 2021-06-24 | 2021-08-24 | 内蒙古工业大学 | Alkali-activated high-water mine filling material based on multiple solid waste synergies and preparation method thereof |
| CN114349405A (en) * | 2022-01-14 | 2022-04-15 | 于立安 | Composition for preparing filling material, preparation method of filling material and method for filling mine |
| CN116835950A (en) * | 2022-03-23 | 2023-10-03 | 国家能源投资集团有限责任公司 | Mining sealing material and application thereof |
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Application publication date: 20190705 |
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