CN105565735B - Sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and the consolidated fill method of mine worked-out section - Google Patents
Sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and the consolidated fill method of mine worked-out section Download PDFInfo
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- CN105565735B CN105565735B CN201510856161.5A CN201510856161A CN105565735B CN 105565735 B CN105565735 B CN 105565735B CN 201510856161 A CN201510856161 A CN 201510856161A CN 105565735 B CN105565735 B CN 105565735B
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- sulfur
- bearing
- curing agent
- tailings
- filling material
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000011593 sulfur Substances 0.000 title claims abstract description 128
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 128
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 69
- 238000011049 filling Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011398 Portland cement Substances 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 22
- 239000010881 fly ash Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 13
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 235000010288 sodium nitrite Nutrition 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 16
- 239000011707 mineral Substances 0.000 abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract description 9
- 150000001342 alkaline earth metals Chemical class 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 9
- 229910052783 alkali metal Inorganic materials 0.000 abstract description 8
- 150000001340 alkali metals Chemical class 0.000 abstract description 8
- 239000002893 slag Substances 0.000 description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 238000002485 combustion reaction Methods 0.000 description 16
- 235000010755 mineral Nutrition 0.000 description 14
- 239000010883 coal ash Substances 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 10
- 239000002956 ash Substances 0.000 description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 9
- 238000011056 performance test Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 8
- 238000005065 mining Methods 0.000 description 8
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 6
- 235000011116 calcium hydroxide Nutrition 0.000 description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 6
- 229910052918 calcium silicate Inorganic materials 0.000 description 5
- 235000012241 calcium silicate Nutrition 0.000 description 5
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 5
- 229910052939 potassium sulfate Inorganic materials 0.000 description 5
- 235000011151 potassium sulphates Nutrition 0.000 description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 description 5
- 235000011152 sodium sulphate Nutrition 0.000 description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- ARHMMDOXGIIARL-UHFFFAOYSA-N calcium;dihydroxy(dioxido)silane Chemical compound [Ca+2].O[Si](O)([O-])[O-] ARHMMDOXGIIARL-UHFFFAOYSA-N 0.000 description 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron 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
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007578 melt-quenching technique Methods 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910001720 Åkermanite 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and the consolidated fill method of mine worked-out section, wherein sulfur-bearing tailings curing agent is made of the component of following parts by weight：0.03~0.1 part of portland cement, 0.70~0.85 part of active mineral admixture, 0~0.03 part of 0.10~0.15 part of the sulfate of alkali metal and/or the sulfate of alkaline-earth metal, 0.03~0.05 part of activity excitant, the hydroxide of alkali metal and/or the hydroxide of alkaline-earth metal；The sulfur-bearing tailings curing agent improves the early strength of sulfur-bearing Cemented Filling, and ensures the stability in later stage, and the Fast Filling for realizing mine worked-out section cures.
Description
Technical field
The present invention relates to field of mining, and in particular to a kind of sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and ore deposit
The consolidated fill method in mountain goaf.
Background technology
Bargh is after the completion of ore dressing, the dump slag mostly to be generated when arranging ore dressing outside slurry form, these discarded ore deposits
Slag to form Tailings Dam through accumulating over a long period, and Tailings Dam not only takes up a large area, but also great security risk.The method of mining by the way of filling be with return
The propulsion of mining face progressively with a kind of mining methods of casting resin bashing, and is applied using tailing as casting resin
In mining with stowing can it is relatively reasonable it is effective utilize tailing.When being filled, by preparations such as the cementitious materials such as cement and tailings
The cementing material of pulp borrows waterpower or machinery to be delivered to stope with pipeline, and some strength is formed after the cementing material solidification of the pulpous state
With the firming body of volume stability, so as to fulfill the filling to goaf.
By curing sulfur-bearing tailings by cementitious material of Portland cement come when carrying out mining with stowing, solid volume increases
Big 1 times or more, and solid volume persistently increases over a period to come, and the volume expansion thus brought is to having obturation structure
Destruction is generated, obturation later strength reduces, and durability cannot ensure.It is thin in crude tailings and as mining technology develops
Granule content is higher and higher, undoubtedly adds the difficulty and cost of crude tailings cementation solidifying, using general portland cement no matter
It is difficult to meet mine requirement in technical performance or financial cost.
The content of the invention
The embodiment of the present application is mined out by providing a kind of sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material and mine
There is obturation volume expansion when solving Portland cement curing sulfur-bearing tailings and the later stage is strong in the consolidated fill method in area
The problem of degree reduces, improves the early strength of sulfur-bearing Cemented Filling, and ensures the stability in later stage.
In order to achieve the above objectives, present invention generally provides following technical solutions：
On the one hand, an embodiment of the present invention provides a kind of sulfur-bearing tailings curing agent, it is made of the component of following parts by weight：Silicon
0.03~0.1 part of acid salt cement, 0.70~0.85 part of active mineral admixture, the sulfate of alkali metal and/or alkaline-earth metal
0.10~0.15 part of sulfate, 0.03~0.05 part of activity excitant, the hydroxide of alkali metal and/or the hydrogen-oxygen of alkaline-earth metal
0~0.03 part of compound.
Preferably, the active mineral admixture is selected from granulated blast-furnace slag, fluidized bed combustion coal ash/slag, flyash, converter slag
At least one of with natural volcanic ash.
Preferably, the sulfate of the alkali metal is one or both of potassium sulfate and sodium sulphate, the alkaline earth gold
The sulfate of category is calcium sulfate.
Preferably, the activity excitant in calcium chloride, sodium chloride, calcium nitrite and sodium nitrite at least one
Kind.
Preferably, the hydroxide of the alkali metal is one or both of sodium hydroxide and potassium hydroxide, it is described
The hydroxide of alkaline-earth metal is calcium hydroxide.
Preferably, the Blain specific surface of the granulated blast-furnace slag is 350~700m2/kg；The fluidized bed combustion coal ash/slag
Blain specific surface is 350~500m2/kg。
Preferably, the Blain specific surface of the flyash is 400~700m2/kg；The Bo Shi ratios of the converter slag
Surface area is 400~700m2/kg；The fineness of the natural volcanic ash is not less than 200 mesh.
On the other hand, the embodiment of the present invention additionally provides a kind of sulfur-bearing tailing cemented filling material, composed of the following components：Contain
Sulphur tailings sand body, sulfur-bearing tailings curing agent and water；The sulfur-bearing tailings curing agent is above-mentioned sulfur-bearing tailings curing agent.
Preferably, the quality of the sulfur-bearing tailings curing agent is the 10%-25% of the sulfur-bearing tailings sand body quality；Institute
The mass concentration for stating sulfur-bearing tailing cemented filling material is 55%-70%.
In addition, the embodiment of the present invention additionally provides a kind of consolidated fill method of mine worked-out section, comprise the following steps：It will
Sulfur-bearing tailing cemented filling material stirs evenly, then is transported to mine worked-out section and is filled, in mine after health 3-28 days again
Carry out subsequent operation；
Wherein, the sulfur-bearing tailing cemented filling material is above-mentioned sulfur-bearing tailing cemented filling material.
The one or more technical solutions provided in the embodiment of the present application, have at least the following technical effects or advantages：
1st, the embodiment of the present application improves sulfur-bearing Cemented Filling by improving the formula of sulfur-bearing tailings curing agent
Early strength, and ensure the stability in later stage, the Fast Filling for realizing mine worked-out section cures.
2nd, sulfur-bearing tailings curing agent provided by the embodiments of the present application can directly cure crude tailings, without dividing tailings
Grade screening, it is basic realize tailings all of reducing the cost of building a dam using fine tailings, preserve the ecological environment；And
The usage amount of industrial residue is more than 67% in the curing agent, reduces the energy consumption and CO of curing agent production process2Discharge.
Specific embodiment
The present invention is described in further detail with reference to specific embodiment, but it is not as a limitation of the invention.
Embodiment 1
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.07kg, granulated blast-furnace
Slag 0.75kg, calcium sulfate 0.12kg, calcium chloride 0.03kg, wherein slaked lime powder (calcium hydroxide) 0.03kg, granulated blast-furnace ore deposit
The Blain specific surface of slag is 350m2/kg；Above-mentioned raw materials are put into mix in mixer, powdery sulfur-bearing tailings is formed after mixing thoroughly
Curing agent is sealed；
(2) the above-mentioned sulfur-bearing tailings curing agent prepared is mixed with 8.94kg mass concentrations for 67% sulfur-bearing tailings slurry
It closes, the quality of wherein sulfur-bearing tailings curing agent accounts for 16.7% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 68%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 2
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.03kg, granulated blast-furnace
Slag 0.35kg, converter slag 0.5kg, calcium sulfate 0.15kg, sodium chloride 0.01g, calcium nitrite 0.04kg, potassium hydroxide
The Blain specific surface of 0.02kg, wherein granulated blast-furnace slag are 500m2/ kg, the Blain specific surface of converter slag is 400m2/
kg；Above-mentioned raw materials are put into mix in mixer, powdery sulfur-bearing tailings curing agent is formed after mixing thoroughly, is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 17.6kg mass concentrations are 62.5%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 10% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 60%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 3
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.05kg, granulated blast-furnace
Slag 0.15kg, converter slag 0.40kg, fluidized bed combustion coal ash/slag 0.25kg, sodium sulphate 0.10kg, sodium nitrite 0.05kg, slaked lime powder
The Blain specific surface of (calcium hydroxide) 0.01kg, wherein sodium hydroxide 0.02kg, granulated blast-furnace slag are 700m2/ kg, converter
The Blain specific surface of slag is 550m2/ kg, fluidized bed combustion coal ash/slag are the original state solid sulfur ash being directly collected into from fluidized-bed combustion boiler flue
Slag, Blain specific surface 500m2/kg；Above-mentioned raw materials are put into mix in mixer, powdery sulfur-bearing tailings is formed after mixing thoroughly
Curing agent is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 7.6kg mass concentrations are 54.2%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 25% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 55%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 4
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.1kg, fluidized bed combustion coal ash/slag
0.2kg, natural volcanic ash 0.5kg, potassium sulfate 0.05kg, sodium sulphate 0.05kg, calcium sulfate 0.05kg, calcium nitrite 0.04kg,
Sodium hydroxide 0.02kg, wherein fluidized bed combustion coal ash/slag are the original state fluidized bed combustion coal ash/slag that is directly collected into from fluidized-bed combustion boiler flue, Bo Shi
Specific surface area is 400m2/ kg, the fineness of natural volcanic ash is 200 mesh；Above-mentioned raw materials are put into mix in mixer, after mixing thoroughly
Powdery sulfur-bearing tailings curing agent is formed, is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 9.4kg mass concentrations are 71.6%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 15% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 70%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 5
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.05kg, flyash
The Blain specific surface of 0.75kg, potassium sulfate 0.10kg, wherein sodium nitrite 0.03kg, flyash are 700m2/kg；It will be above-mentioned
Raw material is put into mix in mixer, and powdery sulfur-bearing tailings curing agent is formed after mixing thoroughly, is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 8.1kg mass concentrations are 54.7%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 21% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 57%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 6
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.1kg, fluidized bed combustion coal ash/slag
0.2kg, flyash 0.55kg, potassium sulfate 0.10kg, wherein calcium chloride 0.03kg, fluidized bed combustion coal ash/slag are directly from fluidized-bed combustion boiler cigarette
The original state fluidized bed combustion coal ash/slag that road is collected into, Blain specific surface 350m2/ kg, the Blain specific surface of flyash is 500m2/
kg；Above-mentioned raw materials are put into mix in mixer, powdery sulfur-bearing tailings curing agent is formed after mixing thoroughly, is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 8.1kg mass concentrations are 54.7%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 21% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 57%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 7
(1) dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.05kg；Converter slag
0.2kg, flyash 0.3kg, natural volcanic ash 0.35kg, sodium sulphate 0.15kg, sodium nitrite 0.04kg's, wherein converter slag
Blain specific surface is 700m2/ kg, the Blain specific surface of flyash is 400m2/ kg, the fineness of natural volcanic ash is 400 mesh；
Above-mentioned raw materials are put into mix in mixer, powdery sulfur-bearing tailings curing agent is formed after mixing thoroughly, is sealed；
(2) by sulfur-bearing tailings slurry that the above-mentioned sulfur-bearing tailings curing agent prepared and 8.1kg mass concentrations are 54.7%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 21% of sand body quality in sulfur-bearing tailings slurry, and water is added into mixture slurry
Its mass concentration is made to be adjusted to 57%, sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(3) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
Embodiment 8
After sulfur-bearing tailing cemented filling material prepared by embodiment 1 is stirred evenly, mine is transported to by pipeline self and is adopted
Dead zone is filled, and obturation forms some strength and the firming body of volume stability after natural Health preservation, and obturation is supported
Raw temperature is 20-25 DEG C, and relative humidity is not higher than 95%.After tested, 3 days compression strength of obturation is 1.78MPa, resistance to compression in 7 days
Intensity is 3.65MPa, and 28 days compression strength is 4.53MPa.
Comparative example
(1) by sulfur-bearing tailings slurry that commercially available 42.5 Portland cements of 1kg and 8.94kg mass concentrations are 67%
Mixing, the quality of wherein sulfur-bearing tailings curing agent account for 16.7% of sand body quality in sulfur-bearing tailings slurry, add into mixture slurry
Water makes its mass concentration be adjusted to 68%, and sulfur-bearing tailing cemented filling material is obtained after stirring evenly；
(2) the above-mentioned sulfur-bearing tailing cemented filling material prepared is poured and is molded in steel die trial, by sample in room temperature
Stand 1 day after receive face, the form removal after plasticity is lost, after form removal room temperature be 20 ± 2 DEG C, the standard curing of relative humidity >=90%
Maintenance is to regulation age in room, then presses《Building mortar basic performance tests method standard》(JGJ/T70-2009) pressure resistance is measured
Degree.
The performance test results of 1. sample of table
As it can be seen from table 1 being found by the comparison of embodiment 1 and comparative example, the embodiment of the present invention 1 uses sulfur-bearing tailings
Sulfur-bearing tailing cemented filling material prepared by curing agent, pours sample volume stability in maintenance processes, and no swelling cracking shows
As, and early strength is high, stable long-term strength, and comparative example is filled using the sulfur-bearing tailings prepared by Portland cement is cementing
Filler pours sample and volume expansion occurs, and apparent crackle occurs in the later stage, and intensity declines, and illustrates that the embodiment of the present invention provides
Sulfur-bearing tailings curing agent sulfur-bearing tailings effect be much better than Portland cement.1-8 of the embodiment of the present invention is carried according to the present invention
Sulfur-bearing tailing cemented filling material prepared by the sulfur-bearing tailings hardener formula of confession, pour the volume of sample or obturation compared with
The characteristics of stabilization without swelling cracking phenomenon, and is respectively provided with early strength height, stable long-term strength is, it can be achieved that mine worked-out section
Fast Filling cure；The weight accounting of active mineral admixture in the sulfur-bearing tailings curing agent component of the embodiment of the present invention surpasses
Cross 67%, and active mineral admixture is using large Industrial Solid Waste, the embodiment of the present invention use these large Industrial Solid Wastes for
Curing agent main component, not only raw material sources are extensive, of low cost, and reduce curing agent production process energy consumption and
CO2Discharge；Sulfur-bearing tailings curing agent provided in an embodiment of the present invention can directly cure crude tailings, without being classified to tailings
Screening, it is basic realize tailings all of reducing the cost of building a dam using fine tailings, preserve the ecological environment.
Active mineral admixture in sulfur-bearing tailings curing agent of the embodiment of the present invention can form package under exciting agent effect
The expansion component of bonding component and filling consolidated structures hole needed for tailings；The preferred active mineral admixture of the embodiment of the present invention
Selected from least one of granulated blast-furnace slag, fluidized bed combustion coal ash/slag, flyash, converter slag and natural volcanic ash；Wherein granulation is high
Stove slag is a kind of by-product in ironmaking processes, by 2CaOAl2O3·SiO2(cacoclasite), 2CaOMgOSiO2
(akermanite) and 2CaOMgO2SiO2(merwinite) and minimal amount of monocalcium silicate or dicalcium silicate composition, have
Itself faint gelling, can under low alkali environment aquation, hydrated product for low calcium silicon than hydrated calcium silicate, intensity and durable
Property is good therefore good to different types of tailings adaptability；Fluidized bed combustion coal ash/slag is in 850-950 DEG C of fluidized bed furnace or recirculating fluidized bed
The waste residue of coal desulfurization, contains CaSO4With remaining CaO, therefore with itself hydraulicity, and institute's containing sulfate is to slag etc.
Material also has certain excitation, can be with different minerals admixture compounding use；Flyash is the power plant to be generated electricity with coal-powder boiler
The flue dust given off, by most diameter by μm in terms of solid and/or hollow glass microbead and a small amount of mullite, quartz
Wait crystalline materials composition, main component SiO2, Al2O3、Fe2O3With CaO (account for gross mass 90% or so), by CaO content
Class F fly ash, middle calcium fly ash and high-calcium fly ass how much can be divided into, aquation silicon can be formed under alkalescence and condition of sulfate
Sour calcium, drated calcium aluminate and entringite etc., can be with other admixture compounding uses；Converter slag is discharged in steelmaking process
Various smeltings by after high melt quenching formed, it mainly by metal charge impurity, slag making substance (such as:Iron
Ore, dolomite when) in the gainster and metal charge that are etched because oxidation due to the oxide composition of various elements that generates,
Converter slag is mainly by tricalcium silicate, dicalcium silicate, calcium ferrite, RO and Ca (OH)2Mineral compositions are waited, itself has certain hydraulic
Activity, while because with relatively low basicity, the environment for resisting erosion of sulfate can be compounded with slag；Natural volcanic ash is rich in work
Property silicon or activated silica+activated aluminum, cover it is all can be reacted with lime and water, hydrated calcium silicate of the generation with gelling property
With the material of calcium aluminate, main hydration products are hydrated calcium silicate, drated calcium aluminate and aquation cacoclasite, because it can be low
Aquation under alkali environment, available for the environment for preventing sulfate attack.
The sulfate of alkali metal in sulfur-bearing tailings curing agent of the embodiment of the present invention and/or the sulfate of alkaline-earth metal are work
Property mineral admixture exciting agent, under alkaline environment can with the aluminum-containing phase in curing agent react generation entringite；The present invention
The sulfate of embodiment preferred as alkali is potassium sulfate or sodium sulphate, and the sulfate of alkaline-earth metal is calcium sulfate.
Accelerating component of the activity excitant as curing agent in sulfur-bearing tailings curing agent of the embodiment of the present invention, can accelerate morning
The formation of hydrated product in phase consolidated structures improves obturation early strength；The preferred activity excitant of the embodiment of the present invention is selected from
At least one of calcium chloride, sodium chloride, calcium nitrite and sodium nitrite.
The hydroxide of alkali metal and/or the hydroxide of alkaline-earth metal in sulfur-bearing tailings curing agent of the embodiment of the present invention
For the exciting agent of active mineral admixture, the alkaline environment provided can make active mineral admixture aquation form curing tailings institute
The hydrated product needed；One kind in sodium hydroxide and potassium hydroxide of the hydroxide of preferred as alkali of the embodiment of the present invention or
Two kinds, the hydroxide of alkaline-earth metal is calcium hydroxide.
Since the excessive active mineral admixture of grain size is difficult to participate in aquation, it is impossible to play activity；The too small mineral of grain size
Admixture activity is higher, but water requirement is big, influences to fill liquid flowability, therefore, be mixed for the active mineral of the embodiment of the present invention
Close material specific surface area cannot it is too small can not be excessive, the Blain specific surface of the preferred granulated blast-furnace slag of the embodiment of the present invention is
350~700m2/kg；The Blain specific surface of flyash is 400~700m2/kg；The Blain specific surface of fluidized bed combustion coal ash/slag is 350
~500m2/kg；The Blain specific surface of converter slag is 400~700m2/kg；The fineness of natural volcanic ash is not less than 200 mesh.
The quality of sulfur-bearing tailings curing agent is sulfur-bearing tailings in sulfur-bearing tailing cemented filling material prepared by the embodiment of the present invention
During the 10%-25% of sand body quality, filling cost can be reduced on the premise of different mining demands are met；Sulfur-bearing tailings is cementing to be filled
When the mass concentration of filler is 55%-70%, it is ensured that strength of filling mass and filling slurry gravity flow filling, when sulfur-bearing tailings is cementing
When the mass concentration of casting resin is more than 70%, filling slurry viscosity is too big, it is impossible to gravity flow filling, and sulfur-bearing tailing cemented filling material
Mass concentration when being less than 55%, the strength of filling mass that is formed is inadequate after filling slurry hardening, influences the quality of obturation.
It, can be according to the type of sulfur-bearing tailings and to obturation on the basis of experiment the invention is not restricted to above-described embodiment
Performance requirement the formula of sulfur-bearing tailings curing agent and sulfur-bearing tailing cemented filling material is adjusted.If for filling muscle power
Learn that performance requirement is higher or original state tailings in water content it is higher etc., it is living that granulated blast-furnace slag etc. in curing agent can be properly increased
Property mineral admixture fineness, improve activity excitant dosage or improve curing agent dosage, with ensure obturation meet not
With the technology requirement of engineering specifications.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and scope of technical solution of the present invention, should all be covered at this
Among the right of invention.
Claims (2)
1. a kind of sulfur-bearing tailing cemented filling material, which is characterized in that composed of the following components：Sulfur-bearing tailings sand body, sulfur-bearing tailings
Curing agent and water；
Wherein,
The dry feedstock of sulfur-bearing tailings curing agent is weighed according to following weight：Portland cement 0.05kg, flyash 0.75kg, sulphur
The Blain specific surface of sour potassium 0.10kg, wherein sodium nitrite 0.03kg, flyash are 700m2/kg；Above-mentioned raw materials are put into and are stirred
Mix in machine is mixed, powdery sulfur-bearing tailings curing agent is formed after mixing thoroughly, is sealed；
The above-mentioned sulfur-bearing tailings curing agent prepared is mixed with the sulfur-bearing tailings slurry that 8.1kg mass concentrations are 54.7%, wherein
The quality of sulfur-bearing tailings curing agent accounts for 21% of sand body quality in sulfur-bearing tailings slurry, and into mixture slurry plus water makes its quality dense
Degree is adjusted to 57%, and sulfur-bearing tailing cemented filling material is obtained after stirring evenly.
2. the consolidated fill method of mine worked-out section, which is characterized in that comprise the following steps：Sulfur-bearing tailing cemented filling material is stirred
Mix uniformly, then be transported to mine worked-out section and filled, in mine health carry out subsequent operation again after 3-28 days；
Wherein, the sulfur-bearing tailing cemented filling material is sulfur-bearing tailing cemented filling material described in claim 1.
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Effective date of registration: 20201229 Address after: 101399 No.19 Dongying Road, Zhaofeng industrial base, zhaoquanying Town, Shunyi District, Beijing Patentee after: CABR BUILDING MATERIALS Co.,Ltd. Patentee after: TONGLING CHEMICAL GROUP XINQIAO MINING Co.,Ltd. Address before: China Academy of Building Sciences, No.30, East Road, North Third Ring Road, Chaoyang District, Beijing 100013 Patentee before: BEIJING JIANYAN KUNLUN TECHNOLOGY Co.,Ltd. Patentee before: TONGLING CHEMICAL GROUP XINQIAO MINING Co.,Ltd. |