CN107805023A - A kind of mine paste filling material and preparation method thereof - Google Patents
A kind of mine paste filling material and preparation method thereof Download PDFInfo
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- CN107805023A CN107805023A CN201711161856.7A CN201711161856A CN107805023A CN 107805023 A CN107805023 A CN 107805023A CN 201711161856 A CN201711161856 A CN 201711161856A CN 107805023 A CN107805023 A CN 107805023A
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of mine paste filling material and preparation method thereof, belong to Coal Mining Technology field.The present invention is using building waste as raw material,The caking property of intensifying regenerating aggregate and new mortar,Less grain diameter forms grading system with binder materials on microcosmic simultaneously,Originally the filling water being filled among hole is cemented out as Free water,Increase the mobility of slurry,It is filled into by micro aggregate effect in a large amount of spaces that hydration process is formed,Closely knit mortar hardening body structure,And then cause mortar strength,Impermeability increases substantially,Add polymeric aluminum simultaneously,The additives such as calcium chloride,Accelerate erosion process of the binder materials to intensifying regenerating aggregate,Binder materials is promoted to cooperate with aquation with intensifying regenerating aggregate,Reduce slurry porosity,Improve slurry consistency,And high intensity can be generated,The good hydrated product of stability,Constitute the filler with good bulk strength,And just final setting time is short,Comprehensively utilize waste material.
Description
Technical field
The present invention relates to a kind of mine paste filling material and preparation method thereof, belong to Coal Mining Technology field.
Background technology
Filling coal mining technology is to substitute extraction resource support overlying rock using hand packing goaf, controls overlying rock
A kind of coal-mining method of fracture, it can both produce coal resources, and and can effectively controls subsidence, protection surface structures and ploughed
Ground, the protective mining to surface environment can be realized, be one of the main method of Coal Green exploitation.In filling mining mistake
Need to consume a large amount of fillers in journey, consolidated fill new technology developed in recent years, such as：Barren rock cemented backfilling technology,
High concentration Filling Technique Cemented with All Taitings, paste body filling technology and high*.water packing technology etc., by barren rock, tailings, natural sand, bastard coal
The solid waste such as stone, flyash are used to prepare filler, on the one hand provide material resource guarantee for filling mining, on the other hand
Also a series of environmental problems caused by solving the stacking of the solid waste such as gangue and flyash, is realized to bastard coal from source
The improvement of stone and flyash.
Colliery proposes that paste body filling exploitation is primarily due to paste filling material compactness height, can obtain best control
Strata movement effect, improves coal mining rate to greatest extent, and its main purpose is exactly：Goaf depression is controlled, improves coal money
Source recovery ratio, extend mine service-life.
Paste body filling exploitation is used as a kind of new production technique, and development is also immature, in order to promote paste body filling technology
Development and application, it is also necessary to deep grinding is carried out to it and made internal disorder or usurp.Subject matter existing for coal mine paste filling for it is following some：（1）
Paste body filling is poor to unstable and moderate stable top plate adaptability, and the control effect of top plate is not good enough after filling, and earth's surface subtracts
It is heavy to need further to be controlled；（2）Because pulp density is higher and the complexity of composition, paste body filling is to filling process, system
It is complex, it is necessary to which high-power filling pump conveying slurry, cost of equipment is higher, and pack effectiveness is relatively low；（3）Strength of filling mass controls
Lack science, filler performance adjustability is poor, fails to suit measures to local conditions, and causes waist performance or performance deficiency；（4）Cement consumes
Measure higher, filler cost is higher；（5）Proportioning of filling materials design lacks certain science, and ratio optimization needs to be goed deep into
Research；（6）Disposal and utilization to coal solid waste is preferable not enough.In view of subject matter existing for paste body filling, urgently
Need further Optimal improvements.
The content of the invention
The technical problems to be solved by the invention：For filler mobility is poor, strength control lack it is scientific, into
A kind of the problem of this is higher, there is provided mine paste filling material and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
The paste filling material is made up of following weight parts raw material：50~60 parts of binder materials, 60~80 parts of intensifying regenerating aggregates,
1~2 part of polymeric aluminum, 0.5~0.6 part of calcium chloride, 0.1~0.3 part of sodium sulphate, 0.1~0.3 part of sodium fluoride, 0.04~0.08 part
Cellulose ether, 1~2 part of water reducer, 30~50 parts of deionized waters.
The binder materials is 5~10 parts by weight steel-making slag powders, and 5~10 parts by weight slag powders, 4~8 weight parts of fine coal are grey,
0.5~1.0 weight parts of quicklime, 0.4~0.8 parts by weight desulfurated plaster, 0.2~0.4 parts by weight silicate cement composition.
The steel-making slag powder specific surface area is 300~400m2/ kg, the slag powders specific surface area are 300~400m2/kg。
III grade of flyash that the flyash produces for Jinchuan ore deposit, 38.9 μm of average grain diameter, SiO in flyash2、Al2O3
Content is up to 62.75%, 26.23% respectively, and specific surface area is 300~400m2/kg。
The intensifying regenerating aggregate is immersed in modification liquid after 1~2h to filter to air-dry for regeneration aggregate and is made.
The modification liquid is by 0.8~1.2 parts by weight of polypropylene acid amides, 0.4~0.6 parts by weight sodium metasilicate, 0.3~0.5 weight
Measure part lauryl sodium sulfate, 0.1~0.3 parts by weight sodium gluconate, 150~200 parts by weight of deionized water composition.
The regeneration aggregate is flotation filtering after construction waste crushing magnetic separation, and filter residue is air-dried into rear crushing and screening and the system of grinding
.
The water reducer is any one in high efficiency water reducing agent FDN-1, polycarboxylate water-reducer 1030.
Concretely comprise the following steps：
（1）Construction waste crushing is taken, particle is immersed in water after iron removal by magnetic separation, is filtered air-dried after removing the impurity of floating and is added
Enter in pulverizer and crush, filter out the particle that particle diameter is 1~10mm, then the particle filtered out is added in horizontal mill and ground
2~3h, obtain regeneration aggregate；
（2）Take polyacrylamide, sodium metasilicate, lauryl sodium sulfate, sodium gluconate to add in deionized water, add regeneration
Aggregate, 1~2h is stood after stirring 20~30min, filtering air-dries, and obtains intensifying regenerating aggregate；
（3）Load ball mill after taking steel-making slag powder, slag powders, flyash, quick lime, desulfurated plaster, portland cement well mixed
In to be milled to specific surface area be 500~700m2/ kg, obtains binder materials；
（4）Take binder materials, intensifying regenerating aggregate, polymeric aluminum, calcium chloride, sodium sulphate, sodium fluoride, cellulose ether, water reducer, go
Ionized water loading stirrer for mixing is uniform, obtains mine paste filling material.
Compared with other method, advantageous effects are the present invention：
（1）The present invention is fitted into grinder after broken removal of impurities using building waste as raw material, utilizes touching between aggregate and aggregate
The mechanism such as hit and be ground, remove the corner angle and mortar of aggregate surface attachment, then the rib of aggregate surface is removed with modification liquid
Angle and the poor mortar of caking property, and improve aggregate surface, the caking property of intensifying regenerating aggregate and new mortar, while less
Grain particle diameter and binder materials form grading system on microcosmic, and the filling water being filled in originally among hole, which is cemented out, to be turned into
Free water, increase the mobility of slurry, be filled into by micro aggregate effect in a large amount of spaces that hydration process is formed, closely knit sand
Hardenite structure is starched, and then causes mortar strength, impermeability to increase substantially, while add polymeric aluminum, the additive such as calcium chloride,
Accelerate erosion process of the binder materials to intensifying regenerating aggregate, promote binder materials to cooperate with aquation with intensifying regenerating aggregate, reduce
Slurry porosity, slurry consistency is improved, while improve interfacial adhesion ability；
（2）Filler prepared by the present invention can generate the sub- stone of the good mirabilitum crystallina pomegranate of high intensity, stability, tobermorite, hard silicon
The hydrated products such as calcium stone, it is coated on solid particles surface or filling between particles, is interweaved and constitutes solid glue
Knot body, the filler with good bulk strength is constituted, and just final setting time is short, comprehensively utilizes waste material, is allowed to
Turn waste into wealth, for economizing on resources, improving environment, increase the benefit, realize Mining Sustainable Development, be worth of widely use.
Embodiment
Take building waste to add in jaw crusher to crush, particle is immersed in water after iron removal by magnetic separation, removes floating
Filter residue is filtered to obtain after impurity, filter residue natural wind dry doubling is added in pulverizer and crushed, filters out the particle that particle diameter is 1~10mm,
The particle filtered out is added again 2~3h is ground in horizontal mill, obtained regeneration aggregate, weigh 0.8~1.2kg polyacrylamides
Amine, 0.4~0.6kg sodium metasilicate, 0.3~0.5kg lauryl sodium sulfate, 0.1~0.3kg sodium gluconates, addition 150~
In 200L deionized waters, 10~20min is stirred with 200~300r/min, 80~100kg regeneration aggregates is added, continues to stir
1~2h is stood after 20~30min, filter cake is filtered to obtain, by filter cake natural air drying, obtains intensifying regenerating aggregate, take 10~20kg converters
Slag is placed in drying box, is dried at 105~110 DEG C to constant weight, then be transferred in ball mill be milled to specific surface area for 300~
400m2/ kg, obtains steel-making slag powder, takes 10~20kg blast-furnace cinders, is placed in drying box, is dried at 105~110 DEG C to constant weight, and
It is 300~400m to be transferred in ball mill and be milled to specific surface area2/ kg, obtains slag powders, takes 5~10kg steel-making slag powders, 5~10kg ore deposits
Ground-slag, 4~8kg flyash, 0.5~1.0kg quick limes, 400~800g desulfurated plasters, 200~400g portland cements, mixing
It is fitted into ball mill that to be milled to specific surface area be 500~700m after uniformly2/ kg, obtains binder materials, takes 5~6kg binder materials, and 6
~8kg intensifying regenerating aggregates, 100~200g polymeric aluminums, 50~60g calcium chloride, 10~30g sodium sulphate, 10~30g sodium fluorides, 4
~8g cellulose ethers, 100~200g water reducers, 3~5kg deionized waters loading stirrer for mixing is uniform, obtains mine lotion
Filler.
Example 1
Take building waste to add in jaw crusher to crush, particle is immersed in water after iron removal by magnetic separation, removes the impurity of floating
After filter to obtain filter residue, will filter residue natural wind dry doubling add pulverizer in crush, filter out particle diameter be 1mm particle, then will screening
The particle that goes out adds in horizontal mill and grinds 2h, obtains regeneration aggregate, weighs 0.8kg polyacrylamides, 0.4kg sodium metasilicate,
0.3kg lauryl sodium sulfate, 0.1kg sodium gluconates, add in 150L deionized waters, 10min is stirred with 200r/min, then
80kg regeneration aggregates are added, continues to stand 1h after stirring 20min, filters to obtain filter cake, by filter cake natural air drying, obtain intensifying regenerating bone
Material, takes 10kg converter slags to be placed in drying box, is dried at 105 DEG C to constant weight, then be transferred in ball mill to be milled to and compare surface
Product is 300m2/ kg, obtains steel-making slag powder, takes 10kg blast-furnace cinders, is placed in drying box, is dried at 105 DEG C to constant weight, and be transferred to
It is 300m that specific surface area is milled in ball mill2/ kg, obtains slag powders, takes 5kg steel-making slag powders, 5kg slag powders, 4kg flyash,
0.5kg quick limes, 400g desulfurated plasters, 200g portland cements, it is fitted into after well mixed in ball mill and is milled to specific surface area
For 500m2/ kg, obtains binder materials, takes 5kg binder materials, 6kg intensifying regenerating aggregates, 100g polymeric aluminums, 50g calcium chloride, 10g
Sodium sulphate, 10g sodium fluorides, 4g cellulose ethers, 100g water reducers, 3kg deionized waters loading stirrer for mixing is uniform, obtains mine
Use paste filling material.
Example 2
Take building waste to add in jaw crusher to crush, particle is immersed in water after iron removal by magnetic separation, removes the impurity of floating
After filter to obtain filter residue, will filter residue natural wind dry doubling add pulverizer in crush, filter out particle diameter be 5mm particle, then will screening
The particle that goes out adds in horizontal mill and grinds 2h, obtains regeneration aggregate, weighs 1.0kg polyacrylamides, 0.5kg sodium metasilicate,
0.4kg lauryl sodium sulfate, 0.2kg sodium gluconates, add in 180L deionized waters, 15min is stirred with 250r/min, then
90kg regeneration aggregates are added, continues to stand 1h after stirring 25min, filters to obtain filter cake, by filter cake natural air drying, obtain intensifying regenerating bone
Material, takes 15kg converter slags to be placed in drying box, is dried at 108 DEG C to constant weight, then be transferred in ball mill to be milled to and compare surface
Product is 350m2/ kg, obtains steel-making slag powder, takes 15kg blast-furnace cinders, is placed in drying box, is dried at 108 DEG C to constant weight, and be transferred to
It is 350m that specific surface area is milled in ball mill2/ kg, obtains slag powders, takes 8kg steel-making slag powders, 8kg slag powders, 6kg flyash,
0.8kg quick limes, 600g desulfurated plasters, 300g portland cements, it is fitted into after well mixed in ball mill and is milled to specific surface area
For 600m2/ kg, obtains binder materials, takes 5kg binder materials, 7kg intensifying regenerating aggregates, 150g polymeric aluminums, 55g calcium chloride, 20g
Sodium sulphate, 20g sodium fluorides, 6g cellulose ethers, 150g water reducers, 4kg deionized waters loading stirrer for mixing is uniform, obtains mine
Use paste filling material.
Example 3
Take building waste to add in jaw crusher to crush, particle is immersed in water after iron removal by magnetic separation, removes the impurity of floating
After filter to obtain filter residue, will filter residue natural wind dry doubling add pulverizer in crush, filter out particle diameter be 10mm particle, then will screening
The particle that goes out adds in horizontal mill and grinds 3h, obtains regeneration aggregate, weighs 1.2kg polyacrylamides, 0.6kg sodium metasilicate,
0.5kg lauryl sodium sulfate, 0.3kg sodium gluconates, add in 200L deionized waters, 20min is stirred with 300r/min, then
100kg regeneration aggregates are added, continues to stand 2h after stirring 30min, filters to obtain filter cake, by filter cake natural air drying, obtain intensifying regenerating
Aggregate, take 20kg converter slags to be placed in drying box, dried at 110 DEG C to constant weight, then be transferred in ball mill to be milled to and compare table
Area is 400m2/ kg, obtains steel-making slag powder, takes 20kg blast-furnace cinders, is placed in drying box, is dried at 110 DEG C to constant weight, and turns
It is 400m to enter to be milled to specific surface area in ball mill2/ kg, obtains slag powders, takes 10kg steel-making slag powders, 10kg slag powders, 8kg fine coal
Ash, 1.0kg quick limes, 800g desulfurated plasters, 400g portland cements, it is fitted into ball mill to be milled to after well mixed and compares surface
Product is 700m2/ kg, obtains binder materials, takes 6kg binder materials, 8kg intensifying regenerating aggregates, 200g polymeric aluminums, 60g calcium chloride,
30g sodium sulphate, 30g sodium fluorides, 8g cellulose ethers, 200g water reducers, 5kg deionized waters loading stirrer for mixing is uniform, obtains
Mine paste filling material.
Reference examples：The filler of Anhui company production.
The filler of example and reference examples is detected, specific detection is as follows：
Compression strength is tested according to regulation in GB/T17671-1999.
According to《Cement normal consistency water consumption, setting time, stability detecting method》Regulation is to solidifying in GB/T1346-2001
The knot time is tested.
Specific testing result such as table 1.
Table 1
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Compression strength/MPa | 0.81 | 0.79 | 0.74 | 0.55 |
| Fluidity/cm | 13 | 14 | 10 | 24 |
As shown in Table 1, the filler that prepared by the present invention has good fluidity and compression strength, and it is comprehensive to improve filling slurry
Performance is closed, reduces filling slurry dosage, it is cost-effective.
Claims (9)
1. a kind of mine paste filling material, it is characterised in that the paste filling material is made up of following weight parts raw material：50
~60 parts of binder materials, 60~80 parts of intensifying regenerating aggregates, 1~2 part of polymeric aluminum, 0.5~0.6 part of calcium chloride, 0.1~0.3 part
Sodium sulphate, 0.1~0.3 part of sodium fluoride, 0.04~0.08 part of cellulose ether, 1~2 part of water reducer, 30~50 parts of deionized waters.
2. a kind of mine paste filling material as claimed in claim 1, it is characterised in that the binder materials is 5~10
Parts by weight steel-making slag powder, 5~10 parts by weight slag powders, 4~8 weight parts of fine coal ash, 0.5~1.0 weight parts of quicklime, 0.4~0.8
Parts by weight desulfurated plaster, 0.2~0.4 parts by weight silicate cement composition.
3. a kind of mine paste filling material as claimed in claim 2, it is characterised in that the steel-making slag powder specific surface area is
300~400m2/ kg, the slag powders specific surface area are 300~400m2/kg。
4. a kind of mine paste filling material as claimed in claim 2, it is characterised in that the flyash is Jinchuan ore deposit
III grade of flyash of production, 38.9 μm of average grain diameter, SiO in flyash2、Al2O3Content is up to 62.75%, 26.23% respectively, than
Surface area is 300~400m2/kg。
5. a kind of mine paste filling material as claimed in claim 1, it is characterised in that the intensifying regenerating aggregate is again
Raw aggregate is immersed in modification liquid after 1~2h to filter to air-dry and is made.
6. a kind of mine paste filling material as claimed in claim 5, it is characterised in that the modification liquid is by 0.8~1.2
Parts by weight of polypropylene acid amides, 0.4~0.6 parts by weight sodium metasilicate, 0.3~0.5 parts by weight lauryl sodium sulfate, 0.1~0.3 weight
Measure part sodium gluconate, 150~200 parts by weight of deionized water composition.
7. a kind of mine paste filling material as claimed in claim 5, it is characterised in that the regeneration aggregate is building rubbish
Flotation is filtered after rubbish crushing-magnetic selection, and filter residue is air-dried into rear crushing and screening and ground obtained.
8. a kind of mine paste filling material as claimed in claim 1, it is characterised in that the water reducer is efficient diminishing
Any one in agent FDN-1, polycarboxylate water-reducer 1030.
9. a kind of preparation method of mine paste filling material as described in claim 1~8 any one, its feature exist
In concretely comprising the following steps：
（1）Construction waste crushing is taken, particle is immersed in water after iron removal by magnetic separation, is filtered air-dried after removing the impurity of floating and is added
Enter in pulverizer and crush, filter out the particle that particle diameter is 1~10mm, then the particle filtered out is added in horizontal mill and ground
2~3h, obtain regeneration aggregate；
（2）Take polyacrylamide, sodium metasilicate, lauryl sodium sulfate, sodium gluconate to add in deionized water, add regeneration
Aggregate, 1~2h is stood after stirring 20~30min, filtering air-dries, and obtains intensifying regenerating aggregate；
（3）Load ball mill after taking steel-making slag powder, slag powders, flyash, quick lime, desulfurated plaster, portland cement well mixed
In to be milled to specific surface area be 500~700m2/ kg, obtains binder materials；
（4）Take binder materials, intensifying regenerating aggregate, polymeric aluminum, calcium chloride, sodium sulphate, sodium fluoride, cellulose ether, water reducer, go
Ionized water loading stirrer for mixing is uniform, obtains mine paste filling material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161856.7A CN107805023A (en) | 2017-11-21 | 2017-11-21 | A kind of mine paste filling material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161856.7A CN107805023A (en) | 2017-11-21 | 2017-11-21 | A kind of mine paste filling material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107805023A true CN107805023A (en) | 2018-03-16 |
Family
ID=61580475
Family Applications (1)
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|---|---|---|---|
| CN201711161856.7A Pending CN107805023A (en) | 2017-11-21 | 2017-11-21 | A kind of mine paste filling material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499244A (en) * | 2020-05-20 | 2020-08-07 | 西安理工大学 | Method for improving quality of recycled coarse aggregate by utilizing cane molasses |
| CN112897941A (en) * | 2021-03-24 | 2021-06-04 | 太原理工大学 | Plant fiber reinforcement method for coal mine cemented filling material aiming at interface transition region |
| CN113250744A (en) * | 2021-06-04 | 2021-08-13 | 许泽胜 | Application of coal-based solid waste filling material in filling and repairing of mine roadway |
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| US20130206041A1 (en) * | 2010-07-16 | 2013-08-15 | Dirk Van Mechelen | Method for recycling waste water from a stainless steel slag treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111499244A (en) * | 2020-05-20 | 2020-08-07 | 西安理工大学 | Method for improving quality of recycled coarse aggregate by utilizing cane molasses |
| CN111499244B (en) * | 2020-05-20 | 2021-12-28 | 西安理工大学 | Method for improving quality of recycled coarse aggregate by utilizing cane molasses |
| CN112897941A (en) * | 2021-03-24 | 2021-06-04 | 太原理工大学 | Plant fiber reinforcement method for coal mine cemented filling material aiming at interface transition region |
| CN113250744A (en) * | 2021-06-04 | 2021-08-13 | 许泽胜 | Application of coal-based solid waste filling material in filling and repairing of mine roadway |
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Application publication date: 20180316 |