CN109987869A - A kind of New Mine filling enhanced additive of rapid hardening - Google Patents
A kind of New Mine filling enhanced additive of rapid hardening Download PDFInfo
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- CN109987869A CN109987869A CN201910191227.1A CN201910191227A CN109987869A CN 109987869 A CN109987869 A CN 109987869A CN 201910191227 A CN201910191227 A CN 201910191227A CN 109987869 A CN109987869 A CN 109987869A
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of New Mine filling enhanced additive of rapid hardening, belong to metal mine underground filling technical field, the composition of the New Mine filling enhanced additive of rapid hardening is respectively as follows: 10~40wt% of slurry rheological agent by weight percentage, 20~35wt% of alkali-activator, 15~35wt% of accelerator, 15~30wt% of early strength agent.The present invention is studied by the function to filling in mine slurry, select slurry rheological agent, alkali-activator, accelerator, early strength agent is as raw material, and it is matched and has carried out adaptation Journal of Sex Research, finally obtaining may make filling in mine slurry to have good mobile performance, the New Mine of rapid condensation time and higher early strength fills the enhanced additive of rapid hardening, and using the additive, filler performance can be effectively improved, guarantee that its filling slurry can be in large volume, in the case of various concentration, keep good rheological property, rapid hardening effect, intensity height and volume stability are good, the features such as rate that shrinks is low, it is excellent on properties.
Description
Technical field
The present invention relates to metal mine underground filling technical fields, more particularly, to one kind for improving filling in mine slurry
The New Mine of rheological property, rapid hardening and each age compression strength fills the enhanced additive of rapid hardening.
Background technique
The method of mining by the way of filling refer to fall mine, haulage and other operations while, with the mining of filling material bashing
Method can be divided into consolidated fill and Non cemented filling two ways.Using relatively broad, material source is consolidated fill therein
The barren rock of accumulation on ground surface, the driving hole barren rock on side, the tailings in dressing plant, the clinker of smeltery, dagger-axe, which are finished, to gather materials and from earth's surface category
Door quarrying etc..
And as the method for mining by the way of filling is in the extensive use of metal mine, in order to reduce production cost, dig up mine after improving filling
Safety, the filler of consolidated fill select mostly the tailings in dressing plant, smeltery clinker preparation, by pumping and infusing
It starches into filling area, good fluidity is not easy plugging, has good mobile performance, has raw material sources extensive, resourceful, to tail
The features such as fine fraction tolerance is big in sand, and intensity is high, and slurry does not isolate layering under certain concentration, and Qinshui amount is small, at
The preferential selection of cementing filling material is selected for many mine units.
Improve the rheological characteristic of slurry however compared with the metal mine filler of no additive, in stowing operation
Can, slurry shrinks when needing to increase water consumption, but will cause filling in this way, and rate is big, setting time is long, while de- in order to reduce
Water and the additive being added, may be such that metal mine obturation condensation process slowly, early strength and final strength it is low, no
Metal mine is able to satisfy to the topology requirement of obturation, security performance is poor.
Summary of the invention
The present invention provides a kind of New Mines to fill the enhanced additive of rapid hardening, solves filling in mine in the prior art
For material under the conditions of slurry various concentration fills, rheological property is poor, intensity is low, setting time is long, shrinks the problems such as big.
The present invention provides a kind of New Mine filling enhanced additive of rapid hardening, and the New Mine filling rapid hardening is enhanced
The composition of additive is respectively as follows: slurry 10~40wt% of rheological agent, 20~35wt% of alkali-activator by weight percentage, speed
Solidifying 15~35wt% of agent, 15~30wt% of early strength agent.
Preferably, the composition of the New Mine filling enhanced additive of rapid hardening is respectively as follows: material by weight percentage
Starch 15~35wt% of rheological agent, 25~32wt% of alkali-activator, 20~28wt% of accelerator, 20~25wt% of early strength agent.
Preferably, the slurry rheological agent is lignosulfonates, naphthalenesulfonate formaldehyde condensation compound water-reducing agent, melamine
One or more of amine, polycarboxylate dehydragent and polymer dispersion powder, kaolin mixture 50:2:3 in mass ratio are uniform
Mixing.
Preferably, the accelerator is aluminum oxide clinker, alum mud and calcium formate (10~12) in mass ratio: (2~5): (3~
5) mixed uniformly mixture.
Preferably, the alkali-activator is that carbide slag, refining slag and sodium hydroxide 1:1:0.02 in mass ratio are uniform
Mixed mixture.
Preferably, the alkali-activator is grinding to specific surface area 450m2The mix powder of/kg.
Preferably, the early strength agent be anhydrous calcium sulphoaluminate, aluminum sulfate, sodium carbonate and triethanolamine in mass ratio (0.5~
1.5): (0.1~0.3): (0.3~0.5): (0.5~1.5) mixed uniformly mixture.
A kind of preparation method of the New Mine filling enhanced additive of rapid hardening, which is characterized in that first, in accordance with described new
The composition of the enhanced additive of type filling in mine rapid hardening weighs slurry rheological agent, alkali-activator, accelerator, early strength agent as former
Material, then adds the raw material into and is sufficiently mixed 5~10min in dry-mixed machine, finally takes out the dry obtained New Mine of mixture and fills
Fill out the enhanced additive of rapid hardening.
A kind of New Mine filling slurry, by the New Mine filling enhanced additive of rapid hardening and cementitious material, ash
The iron tailings sand of sand ratio 1:5 is uniformly mixed, and the New Mine filling slurry that tailings concentration is 50%-60% is finally prepared.
Preferably, the addition quality of the New Mine filling enhanced additive of rapid hardening is in the filling in mine slurry
The 0.5%~3% of cementitious material.
The advantageous effects of the above technical solutions of the present invention are as follows:
The present invention is studied by the function to filling in mine slurry, selects slurry rheological agent, alkali-activator, rapid hardening
Agent, early strength agent match it and have carried out adaptation Journal of Sex Research as raw material, finally show that may make that filling in mine slurry has good
The New Mine of mobile performance well, rapid condensation time and higher early strength fills the enhanced additive of rapid hardening, and
Using the additive, filler performance can be effectively improved, guarantees that its filling slurry can be in large volume, difference
Under concentration levels, kept for good rheological property, rapid hardening effect, intensity height and the features such as volume stability is good, the rate that shrinks is low, respectively
It is excellent in item performance.Wherein:
1) each component material in raw material mixes, water-reducing agent cooperation redispersable latex powder and kaolinite in slurry rheological agent
Soil can effectively prevent the cementitious material in slurry to circulate and be lost with dampening, and water retention property is preferable；And levigate kaolinite
Good absorption property possessed by soil particle itself and peptizaiton, can effectively prevent the aggregation of slurry particle, so that material
Slurry particle is evenly distributed in obturation condensation process；
2) the common addition of the carbide slag in alkali-activator, refining slag and sodium hydroxide can effectively improve in filling slurry
Calcium ion, hydroxide ion and aluminum ions content, to increase material entirety basicity and hydrated calcium silicate and entringite product；
3) aluminum oxide clinker in accelerator, alum mud and calcium formate can play the effect of rapid hardening and microdilatancy to slag jointly,
Obturation early strength is improved jointly with anhydrous calcium sulphoaluminate, aluminum sulfate, sodium carbonate and the triethanolamine in early strength agent, it is common to increase
Hydrated product entringite and hydrated calcium silicate gel body is added to form comparatively dense cementitious material；
4) aluminum oxide clinker in accelerator and kaolin have good dilatancy, can effectively reduce obturation contraction and week
The prestressing force that side rock mass generates, forms good volume stability, to improve resistance to compression and resistance to performance of waiting so long；
5) the addition quality of the New Mine filling enhanced additive of rapid hardening is to be gelled in the filling in mine slurry
Material 0.5%~3% when, slurry under different concentration still with good transportation performance, droning shrinkage, low bleeding effect
Fruit, the slurry under same gel material content, compression strength can increase substantially, and setting time is short；
It 6) is year-on-year with the strength of filling mass that the New Mine filling enhanced additive of rapid hardening is prepared with filler
At least 1.5 times of cement placement body under the conditions of example；Simultaneously using the mine of the New Mine filling enhanced additive of rapid hardening
Filling slurry has that easily pumping, condensation are fast, intensity is high, shrink the excellent properties such as low, at low cost.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation
Example is described in detail.
The technical problem to be solved by the present invention is to the additions for filling the enhanced additive of rapid hardening by New Mine to overcome now
There is in technology mine filler under the conditions of the filling of slurry various concentration, rheological property is poor, intensity is low, setting time is long, receipts
It contracts the problems such as big.
It is filled in order to solve the above technical problems, the present invention provides a kind of lower shrinkage early-strength mine for ultra-fine iron tailings sand
The composition of filler gel material, the New Mine filling enhanced additive of rapid hardening is respectively as follows: pulp flow by weight percentage
Become 10~40wt% of agent, 20~35wt% of alkali-activator, 15~35wt% of accelerator, 15~30wt% of early strength agent.
The specific New Mine filling enhanced additive of rapid hardening is illustrated with the following Examples:
Embodiment 1
Raw material by composition and is matched as pulp density rheological agent 20wt%；Alkali-activator 30wt%；Accelerator
25wt%, early strength agent 25wt% are uniformly mixed configuration New Mine and fill the enhanced additive of rapid hardening.
The New Mine filling enhanced additive of rapid hardening and cementitious material are mixed to prepare mixing material first, then will not
The aforementioned mixing material of same cement-sand ratio (1:5) is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry.Its
In: the gradation of iron tailings sand be 10.75%+60 mesh, 19.09%+100 mesh, 42.82% -100+200 mesh, 9.68%
- 200+300 mesh, 7.13% -300+400 mesh and 10.53% -400 mesh.
Lower shrinkage early-strength filling in mine slurry obtained above is pumped up mode slip casting to fill to goaf,
In:
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 190mm, iron tailings sand concentration
It is 53.1%, lower shrinkage early-strength filling in mine slurry setting time only needs 28min, and the rate that shrinks is 3.9%, 3d, 7d, 28d
The compression strength for measuring mine filler is respectively 0.81MPa, 1.51MPa, 2.51MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 1%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 225mm, iron tailings sand concentration
Be 51.9%, lower shrinkage early-strength filling in mine slurry setting time only needs 18.5min, the rate that shrinks be 1.5%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 1.43MPa, 2.18MPa, 3.13MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 173mm, iron tailings sand concentration
Be 60.3%, lower shrinkage early-strength filling in mine slurry setting time only needs 8.5min, the rate that shrinks be 5.5%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 1.15MPa, 2.36MPa, 3.52MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 1%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 215mm, iron tailings sand concentration
Be 60.1%, lower shrinkage early-strength filling in mine slurry setting time only needs 6.5min, the rate that shrinks be 2.9%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 1.81MPa, 3.55MPa, 4.85MPa；
It can be seen that additive volume is smaller, and setting time gets over when cement-sand ratio is identical and iron tailings sand concentration comparable
Long, the rate that shrinks is bigger, and the compression strength of mine obturator is lower；And when cement-sand ratio and additive volume all the same, iron tailings sand
Concentration is bigger, and fluidity is smaller, and setting time is smaller, and the rate that shrinks is bigger, and compression strength is bigger.
Embodiment 2
Raw material by composition and is matched as pulp density rheological agent 35wt%；Alkali-activator 25wt%；Accelerator
20wt%, early strength agent 20wt% are uniformly mixed configuration New Mine and fill the enhanced additive of rapid hardening.
The New Mine filling enhanced additive of rapid hardening and cementitious material are mixed to prepare mixing material first, then will not
The aforementioned mixing material of same cement-sand ratio (1:5) is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry.Its
In: the gradation of iron tailings sand be 23.30%+100 mesh, 22.09% -100+200 mesh, 5.82% -200+300 mesh,
14.54% -300+400 mesh and 34.25% -400 mesh.
Lower shrinkage early-strength filling in mine slurry obtained above is pumped up mode slip casting to fill to goaf,
In:
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 173mm, iron tailings sand concentration
It is 53.1%, lower shrinkage early-strength filling in mine slurry setting time only needs 30min, and the rate that shrinks is 4.1%, 3d, 7d, 28d
The compression strength for measuring mine filler is respectively 0.31MPa, 0.61MPa, 1.11MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 2%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 207mm, iron tailings sand concentration
Be 51.9%, lower shrinkage early-strength filling in mine slurry setting time only needs 23.5min, the rate that shrinks be 2.3%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 0.43MPa, 0.82MPa, 1.41MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 143mm, iron tailings sand concentration
Be 59.7%, lower shrinkage early-strength filling in mine slurry setting time only needs 10.5min, the rate that shrinks be 5.1%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 0.45MPa, 0.91MPa, 1.34MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 2%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 195mm, iron tailings sand concentration
Be 60.3%, lower shrinkage early-strength filling in mine slurry setting time only needs 8.5min, the rate that shrinks be 3.2%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 0.61MPa, 1.05MPa, 1.55MPa；
It can be seen that additive volume smaller setting time is longer when cement-sand ratio is identical and iron tailings sand concentration comparable,
The rate that shrinks is bigger, and the compression strength of mine obturator is lower；And when cement-sand ratio and additive volume all the same, iron tailings sand concentration
Bigger, fluidity is smaller, and setting time is smaller, and the rate that shrinks is bigger, and compression strength is bigger.
With the comparison of embodiment 1 it is found that cement-sand ratio and additive doping are identical, iron tailings sand gradation is different, i.e. iron tailings
- 400 mesh powder level of sand increases with ratio and+60 mesh powder levels reduce with ratio, and fluidity accordingly reduces, and setting time increases
Greatly, the rate that shrinks increases, and compression strength reduces；
Cement-sand ratio is identical, and iron tailings sand gradation is different, i.e., -400 mesh powder level of iron tailings sand is with ratio increase and+60 mesh
Powder level reduces with ratio, and additive doping is bigger, and fluidity accordingly reduces, and setting time increases, and the rate that shrinks increases, resistance to compression
Intensity reduces.
Embodiment 3
Raw material by composition and is matched as pulp density rheological agent 15wt%；Alkali-activator 32wt%；Accelerator
28wt%, early strength agent 25wt% are uniformly mixed configuration New Mine and fill the enhanced additive of rapid hardening.
The New Mine filling enhanced additive of rapid hardening and cementitious material are mixed to prepare mixing material first, then will not
The aforementioned mixing material of same cement-sand ratio (1:5) is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry.Its
In: the gradation of iron tailings sand be 21.75%+60 mesh, 30.99%+100 mesh, 25.99% -100+200 mesh, 4.42%
- 200+300 mesh, 4.23% -300+400 mesh and 13.1% -400 mesh.
Lower shrinkage early-strength filling in mine slurry obtained above is pumped up mode slip casting to fill to goaf,
In:
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 208mm, iron tailings sand concentration
It is 53.1%, lower shrinkage early-strength filling in mine slurry setting time only needs 32min, and the rate that shrinks is 3.9%, 3d, 7d, 28d
The compression strength for measuring mine filler is respectively 0.52MPa, 0.76MPa, 1.22MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 3%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 235mm, iron tailings sand concentration
Be 51.9%, lower shrinkage early-strength filling in mine slurry setting time only needs 15.5min, the rate that shrinks be 2.7%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 0.89MPa, 1.43MPa, 1.93MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 0%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 187mm, iron tailings sand concentration
Be 60.3%, lower shrinkage early-strength filling in mine slurry setting time only needs 8.5min, the rate that shrinks be 5.5%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 0.42MPa, 0.3MPa, 1.85MPa；
In mixing material, the mass percent that additive volume accounts for cementitious material is 3%, the mixing material of cement-sand ratio (1:5)
Material is uniformly mixed with iron tailings sand prepares lower shrinkage early-strength filling in mine slurry, fluidity 225mm, iron tailings sand concentration
Be 60.1%, lower shrinkage early-strength filling in mine slurry setting time only needs 6.5min, the rate that shrinks be 2.4%, 3d, 7d,
The compression strength that 28d measures mine filler is respectively 1.58MPa, 2.41MPa, 3.52MPa；
It can be seen that additive volume is smaller, and setting time gets over when cement-sand ratio is identical and iron tailings sand concentration comparable
Long, the rate that shrinks is bigger, and the compression strength of mine obturator is lower；And when cement-sand ratio and additive volume all the same, iron tailings sand
Concentration is bigger, and fluidity is smaller, and setting time is smaller, and the rate that shrinks is bigger, and compression strength is bigger.
With the comparison of embodiment 1 it is found that cement-sand ratio and additive doping are identical, iron tailings sand gradation is different, i.e. iron tailings
- 400 mesh powder level of sand increases with ratio and+100 mesh reduce with -100+200 mesh powder level with ratio, and fluidity accordingly increases
Greatly, setting time increases, and the rate that shrinks is constant, and compression strength reduces；
Cement-sand ratio is identical, and iron tailings sand gradation is different, i.e., -400 mesh powder level of iron tailings sand is with ratio increase and+100
Mesh and -100+200 mesh powder level reduce with ratio, and additive doping is bigger, and fluidity increases accordingly, and setting time reduces,
The rate that shrinks increases, and compression strength reduces.
With the comparison of embodiment 2 it is found that cement-sand ratio and additive doping are identical, iron tailings sand gradation is different, i.e. iron tailings
- 400 mesh powder level of sand increases with ratio and+100 mesh reduce with -100+200 mesh powder level with ratio, and fluidity accordingly increases
Greatly, setting time increases, and the rate that shrinks reduces, and compression strength increases；
Cement-sand ratio is identical, and iron tailings sand gradation is different, i.e., -400 mesh powder level of iron tailings sand is with ratio increase and+100
Mesh and -100+200 mesh powder level reduce with ratio, and additive doping is bigger, and fluidity increases accordingly, and setting time reduces,
The rate that shrinks increases, and compression strength increases.
By embodiment 1-3 it is found that additive volume is bigger when cement-sand ratio is identical and iron tailings sand concentration comparable, condensation
Time is shorter, and the rate that shrinks is smaller, and the compression strength of mine obturator is higher；And when cement-sand ratio and additive volume all the same, iron
CHARACTERISTICS OF TAILINGS SAND concentration is bigger, and fluidity is smaller, and setting time is smaller, and the rate that shrinks is bigger, and compression strength is bigger.
To sum up, the present invention is studied by the function to filling in mine slurry, and slurry rheological agent, alkalinity is selected to swash
Hair agent, accelerator, early strength agent match it and have carried out adaptation Journal of Sex Research as raw material, and finally obtaining may make filling in mine
The New Mine filling rapid hardening that slurry has good mobile performance, rapid condensation time and higher early strength is enhanced
Additive, and using the additive, filler performance can be effectively improved, guarantees that its filling slurry can be big
In the case of volume, various concentration, keep good rheological property, rapid hardening effect, intensity high and volume stability is good, the rate that shrinks is low
The features such as, it is excellent on properties.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of New Mine fills the enhanced additive of rapid hardening, which is characterized in that the New Mine filling rapid hardening is enhanced
The composition of additive is respectively as follows: slurry 10~40wt% of rheological agent, 20~35wt% of alkali-activator by weight percentage, speed
Solidifying 15~35wt% of agent, 15~30wt% of early strength agent.
2. New Mine fills the enhanced additive of rapid hardening according to claim 1, which is characterized in that the New Mine fills
The composition for filling out the enhanced additive of rapid hardening is respectively as follows: slurry 15~35wt% of rheological agent, alkali-activator by weight percentage
25~32wt%, 20~28wt% of accelerator, 20~25wt% of early strength agent.
3. New Mine fills the enhanced additive of rapid hardening according to claim 1, which is characterized in that the slurry rheological agent
For one or more of lignosulfonates, naphthalenesulfonate formaldehyde condensation compound water-reducing agent, melamine, polycarboxylate dehydragent
It is uniformly mixed with polymer dispersion powder, kaolin mixture 50:2:3 in mass ratio.
4. New Mine fills the enhanced additive of rapid hardening according to claim 1, which is characterized in that the accelerator is aluminium
Oxygen clinker, alum mud and calcium formate (10~12) in mass ratio: (2~5): (3~5) mixed uniformly mixture.
5. New Mine fills the enhanced additive of rapid hardening according to claim 1, which is characterized in that the alkaline excitation
Agent is the mixed uniformly mixture of carbide slag, refining slag and sodium hydroxide 1:1:0.02 in mass ratio.
6. New Mine fills the enhanced additive of rapid hardening according to claim 5, which is characterized in that the alkaline excitation
Agent is grinding to specific surface area 450m2The mix powder of/kg.
7. New Mine fills the enhanced additive of rapid hardening according to claim 1, which is characterized in that the early strength agent is nothing
Water calcium sulphoaluminate, aluminum sulfate, sodium carbonate and triethanolamine (0.5~1.5) in mass ratio: (0.1~0.3): (0.3~0.5):
(0.5~1.5) mixed uniformly mixture.
8. a kind of preparation method of -7 any New Mine filling enhanced additives of rapid hardening according to claim 1, special
Sign is, weighs slurry rheological agent, alkaline excitation first, in accordance with the composition of the New Mine filling enhanced additive of rapid hardening
Then agent, accelerator, early strength agent add the raw material into as raw material and are sufficiently mixed 5~10min in dry-mixed machine, finally take out mixed
It closes the dry obtained New Mine of object and fills the enhanced additive of rapid hardening.
9. a kind of New Mine filling slurry, which is characterized in that increase any New Mine filling rapid hardening of claim 1-7
Strong type additive is uniformly mixed with the iron tailings sand of cementitious material, cement-sand ratio 1:5, and it is 50%- that tailings concentration, which is finally prepared,
60% New Mine filling slurry.
10. the preparation method of the New Mine filling enhanced additive of rapid hardening according to claim 9, which is characterized in that institute
State the additions quality of the New Mine filling enhanced additive of rapid hardening for cementitious material in the filling in mine slurry 0.5%~
3%.
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