CN109626905A - A method of underground filling is used for based on slag is neutralized - Google Patents
A method of underground filling is used for based on slag is neutralized Download PDFInfo
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- CN109626905A CN109626905A CN201811644770.4A CN201811644770A CN109626905A CN 109626905 A CN109626905 A CN 109626905A CN 201811644770 A CN201811644770 A CN 201811644770A CN 109626905 A CN109626905 A CN 109626905A
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- Prior art keywords
- filling
- slag
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- underground
- water
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- 239000002893 slag Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011343 solid material Substances 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims abstract description 18
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000011398 Portland cement Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000003818 cinder Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000008399 tap water Substances 0.000 claims description 2
- 235000020679 tap water Nutrition 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000010881 fly ash Substances 0.000 claims 1
- 230000003472 neutralizing effect Effects 0.000 abstract description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 11
- 239000000470 constituent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- -1 tailings Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000011401 Portland-fly ash cement Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of methods for being used for underground filling based on neutralization slag, 24~55 parts based on parts by weight neutralization slags, 5~11 parts of rubber solid material components are uniformly mixed, 40~48 parts of water are added to stir into filling slurry and inject in mold, it is demoulded after 2~3 days, the filling test block of demoulding is placed on standard curing room to regulation age, it obtains meeting the neutralization slag underground filling material that filling requires, with neutralizing, slag dosage is big, Filling density and filling compression strength can be improved, it can effectively reduce and neutralize the dosage that slag muck deposits pressure and rubber solid material, save filling cost, filling raw material is easy to get, process is simple and direct, meet underground filling requirement, the advantages such as low with maintenance cost are lacked in equipment investment, particularly suitable for sulphide ore underground filling application.
Description
Technical field
The present invention relates to a kind of based on method of the slag for underground filling is neutralized, and answers particularly suitable for sulphide ore underground filling
With.
Background technique
It in sulphide ore recovery process, is often generated with acid wastewater in mine, this kind of waste water generallys use lime neutralization
Processing, formation largely neutralize slag as composed by hydroxide and gypsum deposition, and neutralization slag is small with granularity, surface area is big, ratio
The small feature of weight, there are in ad hoc outdoor slag library for general heap.Since the neutralization slag moisture content of stockpiling is high, it is big to account for storage capacity, and
It can flow away with water is excessive at rainy season with slag, also easily cause secondary pollution.The filling that bargh generallys use at present is mined out
Mine method be used for underground filling using a large amount of tailings as attal, but underground filling generally face tailings amount it is insufficient and
Neutralize slag unavailable problem again.With the implementation of Environmental Protection in China method, relevant department will also be imposed the waste residue of bargh
High environmentally friendly tax.
To solve the problems, such as how to utilize mine waste residue underground filling, 201710731066.1 disclosure of Chinese Patent Application No.
A kind of " half water filling phosphorous gypsum material and preparation method thereof " can use half water filling phosphorous gypsum material underground filling of preparation；In
State number of patent application CN201410197717.X disclose it is a kind of " the low pumpable ardealite of bleeding rate and Phosphorus Slag fill paste and
Preparation method " can use the ardealite and Phosphorus Slag fill paste underground filling of preparation；Chinese Patent Application No.
CN201310060859.7 discloses a kind of " mine phosphogypsum cemented fill slurrying process ", can use the cementing well of ardealite of preparation
Retrofilling；Chinese Patent Application No.: CN200710193247.X discloses one kind, and " ardealite is for mine worked-out section consolidated fill
Method " can use the cementing underground filling of ardealite；Chinese Patent Application No. CN200610031428.8 discloses one kind, and " ardealite fills
Fill in underground goaf and form the method for solidifying obturation ", with ardealite underground filling and it can solidify, but all without utilizing neutralization
Slag.
It neutralizing slag and mainly contains calcium sulfate, calcium carbonate, clay etc., there is potential hydration activity, the applicant proposes, if
It can will neutralize slag and be used for underground filling progress resource reutilization, turn waste into wealth, bargh's filling cost can be not only reduced, to dimension
Protect adjoining rock stability, reduce surface subsidence, improving resource recovery rate and protection environment has and its important meaning, bargh without
It doubts and is also faced with the problem of imposing the great number expenses of taxation.It is high due to neutralizing slag fine size, moisture content, it is directly used in filling, Filling density is low,
Bleeding is poor, and filling intensity is not high, and required rubber solid material is caused to increase.Currently, the country has no that will neutralize slag is used for underground filling
Report, only about neutralize slag for brickmaking, extract valuable element and prepare the report of building cementing material.
A kind of utilize is researched and developed thus to neutralize slag and just seem especially urgent for the method for underground filling.
Summary of the invention
It is a kind of based on neutralizing slag for underground filling the task of the present invention is for overcome the deficiencies in the prior art, providing
Method can not only meet the needs of mining filling and filling cost is effectively reduced but also mineral resources can be made to be maximally utilized and right
It is environmental-friendly.
The task of the present invention is by the following technical programs to complete:
A method of it being used for underground filling based on slag is neutralized, 24~55 parts based on parts by weight neutralization slags, 5~11 parts
Rubber solid material component is uniformly mixed, and is added 40~48 parts of water to stir into filling slurry and inject in mold, is demoulded after 2~3 days, demoulding
Filling test block is placed on standard curing room to regulation age, obtains meeting the neutralization slag underground filling material that filling requires.
Percentage involved in specification is mass percent, and the neutralization slag is that acid wastewater in mine passes through lime
Waste residue after neutralization, wherein S content is in 10~17%, Ca content 20~25%.The tailings is that mine concentration flotation is complete
Tailings or classified tailings.
Compared with the prior art, the present invention has the following advantages and effect:
(1) it is big to neutralize slag dosage, Filling density and filling compression strength can be improved, neutralization slag muck can be effectively reduced and deposit pressure
With the dosage of rubber solid material, filling cost is saved.
(2) filling raw material is easy to get, and process is simple and direct, meets underground filling requirement.
(3) equipment investment is few, and maintenance cost is low, and application prospect is good.
Specific embodiment
Of the invention is a kind of based on method of the slag for underground filling is neutralized, and 24~55 parts based on parts by weight are neutralized
Slag, 5~11 parts of rubber solid material components are uniformly mixed, and add 40~48 parts of water to stir into filling slurry and inject in mold, after 2~3 days
Demoulding, the filling test block of demoulding are placed on standard curing room to regulation age, and the neutralization slag underground for obtaining meeting filling requirement is filled
Filling chock material.
Technique of the invention may furthermore is that:
5~24 parts of tailings based on parts by weight, 1~2 part of clinker, to improve obturation resistance to compression can also be added in the component
Intensity.
The rubber solid material is that ordinary portland cement, Portland fly ash cement, composite Portland cement are any or several
Kind mixing.
The clinker is blast-furnace cinder, one or more mix in steel slag.
The slag granularity is that -325 mesh (- 0.045mm) account for 95% or more.
The water is tap water or the water for not influencing filler performance.
The specific embodiment of the invention is further illustrated combined with specific embodiments below.
The following are the raw materials in example:
(1) neutralizing slag is the acid waste liquid generated in hot-pressing system production process, is generated after lime neutralisation treatment
Neutralize slag, main chemical compositions: Si 0.7%, Al 1.97%, Ca 20.5%, O 36.8%, K 0.23%, Fe 22.1%,
As 4.24%, P 0.2%, S 12.8%, Mn 0.42%.Neutralizing slag granularity ratio shared by+45 μm is 15.2%, -23 μm
Shared granularity ratio is 76.2%.
(2) tailings is milltailings, main chemical compositions are as follows: Si 25.7%, Al 11.23%, Ca 10.5%, O
36%, K 4.26%, Mg 3.02%, Fe 5.12%, Ti 2.09%, Na 0.33%, P 0.18%, S 1.19%, Mn
0.34% equal elements.Tailings granularity between -106~+45 μm accounts for 35% or so, and granularity ratio shared by -23 μm is 44%.
(3) clinker is the waste residue of certain steel mill, main component are as follows: CaO 40.8%, SiO234.4%, Al2O314%,
Fe2O31.6%, MgO 7.2%, SO32.1%.Clinker after ball milling granularity be -325 mesh (- 0.045mm) account for 95% with
On.
(4) rubber solid material be ordinary portland cement or one of Portland fly ash cement or composite Portland cement or
Several mixing.
Embodiment 1
In parts by weight, constituent mass matches are as follows: neutralizes slag: tailings: rubber solid material: water=45.5:5:12.6:
36.9.Preparation step carries out as follows: (1) will neutralize slag, tailings, rubber solid material and water and mix, with blender with the speed of 200r/min
Degree stirring 2~3 minutes；(2) filling slurry stirred evenly is injected in mold, it will filling test block demoulding after 2~3 days；(3)
Test block is placed in fog room, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) after providing age, take out test block into
The test of row uniaxial compressive strength.The compression strength of the above attal test block 14d is 3.2MPa, and the compression strength of 28d is
4.1MPa meets the requirement of underground filling.
Embodiment 2
In parts by weight, constituent mass matches are as follows: neutralizes slag: rubber solid material: water=50:8.8:38.2.Preparation step
It is following to carry out: (1) slag, tailings, rubber solid material and water will to be neutralized and mixed, and stir 2~3 points with blender with the speed of 200r/min
Clock；(2) filling slurry stirred evenly is injected in mold, it will filling test block demoulding after 2~3 days；(3) test block is placed in feeding
Shield is indoor, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) after providing age, it is strong to take out test block progress uniaxial compressive
Degree test.The compression strength of the above attal test block 14d is 1.7MPa, and the compression strength of 28d is 1.9MPa, meets underground
The requirement of filling.
Embodiment 3
In parts by weight, constituent mass matches are as follows: neutralizes slag: tailings: rubber solid material: steel slag: water=48:5:6.6:3:
37.4.Preparation step carries out as follows: (1) will neutralize slag, tailings, rubber solid material, steel slag and water and mix, with blender with 200r/min
Speed stir 2~3 minutes；(2) filling slurry stirred evenly is injected in mold, takes off filling test block after 2~3 days
Mould；(3) test block is placed in fog room, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) it after providing age, takes
Test block carries out uniaxial compressive strength test out.The compression strength of the above attal test block 14d is 2.4MPa, the pressure resistance of 28d
Degree is 2.7MPa, meets the requirement of underground filling.
Embodiment 4
In parts by weight, constituent mass matches are as follows: neutralizes slag: rubber solid material: water=49.6:5.4:38.Preparation step
It is following to carry out: (1) slag, rubber solid material, steel slag and water will to be neutralized and mixed, and stir 2~3 points with blender with the speed of 200r/min
Clock；(2) filling slurry stirred evenly is injected in mold, it will filling test block demoulding after 2~3 days；(3) test block is placed in feeding
Shield is indoor, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) after providing age, it is strong to take out test block progress uniaxial compressive
Degree test.The compression strength of the above attal test block 14d is 1.9MPa, and the compression strength of 28d is 2.2MPa, meets underground
The requirement of filling.
Embodiment 5
In parts by weight, constituent mass matches are as follows: neutralizes slag: tailings: rubber solid material: water=35:17:6.5:41.5.
Preparation step carries out as follows: (1) will neutralize slag, tailings, rubber solid material and water and mix, and be stirred with blender with the speed of 200r/min
2~3 minutes；(2) filling slurry stirred evenly is injected in mold, it will filling test block demoulding after 2~3 days；(3) by test block
It is placed in fog room, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) it after providing age, takes out test block and carries out single shaft
Intensity test.The compression strength of the above attal test block 14d is 1.7MPa, and the compression strength of 28d is 2.0MPa, full
The requirement of sufficient underground filling.
Comparative example
It does not use and neutralizes slag filling, but use tailing-filled.In parts by weight, constituent mass matches are as follows: tail
Sand: rubber solid material: water=46.4:11.6:42.Preparation step carries out as follows: (1) mixing tailings, rubber solid material and water, with stirring
Machine is stirred 2~3 minutes with the speed of 200r/min；(2) filling slurry stirred evenly is injected in mold, after 2~3 days
It will filling test block demoulding；(3) test block is placed in fog room, 20 DEG C of indoor control constant temperature, the condition of constant humidity 95%；(4) to
After providing age, takes out test block and carry out uniaxial compressive strength test.The compression strength of the above attal test block 14d is
The compression strength of 0.6MPa, 28d are 0.7MPa.
From the experimental results, when comparative example cement-sand ratio is 1:4,28d compression strength is no more than 1MPa, is unable to satisfy mine
Scene filling requires and (is more than or equal to 1MPa).And in embodiment 4, when cement-sand ratio is 1:10,28d compression strength is more than 2MPa, far
Meet underground filling requirement.It is found that obturation compression strength can be improved in addition clinker, tailings from embodiment 1,3,5.
As described above, the present invention can be better realized.Above-described embodiment is only the optimal embodiment of the present invention, but this
The embodiment of invention is simultaneously not restricted to the described embodiments, what other were done without departing from the spirit and principles of the present invention
Change, modification, replacement, combination, simplify, should be equivalent substitute mode, be included in protection scope of the present invention.
Claims (6)
1. a kind of method for being used for underground filling based on neutralization slag, it is characterised in that 24~55 parts based on parts by weight are neutralized
Slag, 5~11 parts of rubber solid material components are uniformly mixed, and add 40~48 parts of water to stir into filling slurry and inject in mold, after 2~3 days
Demoulding, the filling test block of demoulding are placed on standard curing room to regulation age, and the neutralization slag underground for obtaining meeting filling requirement is filled
Filling chock material.
2. the method as described in claim 1, it is characterized in that 5~24 parts of tails based on parts by weight can also be added in the component
Sand, 1~2 part of clinker, to improve obturation compression strength.
3. the method as described in claim 1, it is characterized in that the rubber solid material is ordinary portland cement, fly ash silicate water
Any one or several mixing of mud, composite Portland cement.
4. method according to claim 2, it is characterized in that the clinker is blast-furnace cinder, any one or several mixing of steel slag.
5. method as claimed in claim 2 or 4, it is characterized in that the slag granularity be -325 mesh (- 0.045mm) account for 95% with
On.
6. the method as described in claim 1, it is characterized in that the water is tap water or the water for not influencing filler performance.
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| CN201811644770.4A CN109626905A (en) | 2018-12-29 | 2018-12-29 | A method of underground filling is used for based on slag is neutralized |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066145A (en) * | 2019-04-19 | 2019-07-30 | 铜陵铜冠建安新型环保建材科技有限公司 | A kind of preparation method neutralizing slag brick block |
| CN110482966A (en) * | 2019-09-26 | 2019-11-22 | 北京矿冶科技集团有限公司 | Compound cemented filling material and its preparation method and application |
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