CN110256028A - A kind of bastard coal ground mass mine cemented filling material and preparation method - Google Patents
A kind of bastard coal ground mass mine cemented filling material and preparation method Download PDFInfo
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- CN110256028A CN110256028A CN201910510915.XA CN201910510915A CN110256028A CN 110256028 A CN110256028 A CN 110256028A CN 201910510915 A CN201910510915 A CN 201910510915A CN 110256028 A CN110256028 A CN 110256028A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of bastard coal ground mass mine cemented filling material and preparation methods, it is at high cost that it solves filler in the prior art, the low problem of resource utilization, with existing solid waste can be made full use of, it is energy saving, it prepares simpler, filler is more stable, can long-distance pumping beneficial effect, its scheme is as follows: a kind of bastard coal ground mass mine cemented filling material, it further include early strength agent, water-reducing agent, swelling agent and stabilizer including red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and desulfurized gypsum.
Description
Technical field
The present invention relates to filling in mine Material Fields, more particularly to a kind of bastard coal ground mass mine cemented filling material and system
Preparation Method.
Background technique
With the fast development of China coal industry, goaf area constantly expands, and subsidence, " under three " press coal problem
It is more prominent.Mining with stowing technique is preventing large area subsidence, liberation " under three " from pressing coal, is improving resource recovery rate, solution
The advantage of gangue ground stacking etc. highlights further, and filler is main at present or serves as gelling with portland cement
Material serves as aggregate with broken gangue, not only expensive, but also transportation performance is unstable, seriously restricts coal mine
Filling advances, it is therefore necessary to develop the new cementitious material of one kind to replace cement to push cemented filling mining technology
Development.
Red mud is the strong basicity waste residue that aluminium industry generates in extracting alumina process, and the pH value of leachate is 12.1
~13.According to the difference of alumina-producing method, red mud can be divided into 3 classes: Bayer process red mud, red mud from sintering process and mixed combining method are red
Mud.Wherein Bayer process is to produce the main method of aluminium oxide, and yield accounts for 90% or more of global aluminium oxide total output.According to endless
Full statistics, the red mud that China is discharged every year are up to ten million ton, and having added up storage is more than tens million of tons, and the utilization rate of red mud is low
Under, a large amount of red mud sufficiently effective cannot utilize, largely it is deposited in level land and hillside, a large amount of soil of occupancy, and
Serious harm is caused to environment.So reduce the yield and harm of red mud to greatest extent, realize by all kinds of means, quantity greatly
Recycling is extremely urgent.Gangue is the solid slag discharged in coal mining and washing process, is the current discharge amount in China
One of maximum industrial solid castoff.
Correlation scholar has carried out part research work in terms of preparing filler using solid waste both at home and abroad.Inventor's discovery
Filler is conventional alkali-activator in the prior art, not only increases cost, and needs to prepare in advance, makes the production of material
Technique is more complicated, is all only to carry out part replacement to cement or use price more expensive although making some progress
Alkali-activator excited.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of bastard coal ground mass mine cemented filling material, the materials
Expect it is more stable, can long-distance pumping, getting up early intensity is high, non-toxic, the good not retraction of dilatancy.
Second purpose of the invention is to provide a kind of preparation method of bastard coal ground mass mine cemented filling material, passes through the preparation
Method simplifies preparation process directly using the gelation activity of the strong basicity excitation gangue of red mud soup.
A kind of concrete scheme of bastard coal ground mass mine cemented filling material is as follows:
A kind of bastard coal ground mass mine cemented filling material, including red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and
Desulfurized gypsum.
Above-mentioned filler, all materials are solid waste, are effectively utilized existing resource, more economical
And environmental protection, resource utilization effectively improve, and are handled by red mud soup other materials in material, can excite gangue
Potential gelation activity, the cementitious material of mine cemented filling is served as instead of cement completely, widened gangue mine fill
Application in field reduces filling in mine cost.
Further, in order to further increase the performance of filler, a kind of bastard coal ground mass mine cemented filling material, also
Including early strength agent, water-reducing agent, swelling agent and stabilizer.
Further, the parts by weight difference of the red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and desulfurized gypsum
As follows: 40~50 parts, 35~45 parts, 10~20 parts, 5~10 parts, 5~10 parts and 5~10 parts, red mud soup has strong basicity, energy
It is enough to destroy the original structure with potential activity substance, more stable structure is formed by aquation, improves the workability of material
Can, the effect that this number ratio is conducive to red mud soup plays, and the content of carbide slag and gangue is conducive to interact,
And then improve the compactness of filler.
Further, the parts by weight difference of the early strength agent, water-reducing agent, swelling agent and stabilizer is as follows: 2~3 parts, 1~2
Part, 1~2 part and 1~1.5 part, the setting of these materials does not need that too much, the performance of filler can be improved.
Further, the red mud soup is the red mud soup that Bayer process generates, and moisture content is 45%~65%, pH value 12.1
~13.
Further, the steel slag is electric furnace slag, steel slag contains more silica, in the red mud soup of strong basicity
It can be dissolved out under excitation, and form ground polymers colloid, improve the mechanical strength of material.Further, the steel slag further includes two
Silica and iron oxide, calcium oxide, iron oxide, the composition of silica and iron oxide are successively as follows: 24.7%~34.9%,
23.1%~48.1%, 12.8%~21.5% and 1.8%~15.8%.
Further, the parts by weight difference of the red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and desulfurized gypsum
It is as follows: 40~45 parts, 35~40 parts, 12~15 parts, 5~6 parts, 5~6 parts and 5~6 parts.
Alternatively, in another arrangement, the red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and desulfurized gypsum
Parts by weight difference is as follows: 45~50 parts, 30~35 parts, 10~13 parts, 7~9,5~6 parts and 5~6 parts.
The invention also discloses a kind of preparation methods of bastard coal ground mass mine cemented filling material, including following content:
Gangue, steel slag, carbide slag, desulfurized gypsum and blast-furnace cinder are mixed, grinding setting time in ball mill are added,
Mixture A is made；
Early strength agent, water-reducing agent, swelling agent and stabilizer are proportionally added in mixing plant and mixed, mixing is made
Expect B；
Mixture A and mixture B are poured into uniform stirring setting time in red mud soup, are added with water to the design ratio of mud, and
It is stirred.
In above-mentioned preparation method, the configuration sequence of mixture A and mixture B are replaceable, in the configuration method, by right
Partial elements carry out grinding, are conducive to coming into full contact between each raw material, the uniformity and mobility of reinforcing material, by mixture
It in A and mixture B whipping process, stirs in two times, is more conducive to the potential gelation activity of excitation material, makes consolidated fill material
Material has higher early stage and later strength.
Compared with prior art, the beneficial effects of the present invention are:
1) present invention passes through the selection of red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and desulfurized gypsum, all
Material is solid waste, effectively improves solid waste resource utilization rate, reduces the cost of filler, and more supernumerary segment
Energy and environmental protection, no cement incorporation, reasonably reduce costs on the basis of guaranteeing performance.
2) present invention passes through the selection of red mud soup, can effectively excite the potential gelation activity of gangue, can replace water
Mud serves as the cementitious material of mine cemented filling, and filler slurries can be made more stable, and red mud soup contains setting
The moisture of amount is, it can be achieved that long-distance pumping, early strength is high, and non-toxic, the good not retraction of dilatancy has widened gangue in mine
Application in padding field.
3) in the present invention by the selection of carbide slag, the silica in carbide slag can be played with calcium oxide with gangue
Cooperative compensating effect, to form more ground polymers colloid, improves the compactness of hydrated calcium silicate, the hole of material is effectively reduced
Gap rate.
4) vitreum in blast-furnace cinder is made full use of by the selection of blast-furnace cinder in the present invention, is excited in red mud soup
There is stronger activity afterwards, filler can be made to obtain better mechanical property.
3) present invention providing by preparation method, red mud does not need to dry, and is directly excited using the strong basicity of red mud soup
The gelation activity of gangue, simplifies preparation process.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this hair
It is bright to propose a kind of bastard coal ground mass mine cemented filling material, including red mud soup, gangue, blast-furnace cinder, steel slag, carbide slag and
Desulfurized gypsum.A kind of bastard coal ground mass mine cemented filling material, further includes early strength agent, water-reducing agent, swelling agent and stabilizer.
In addition, the present invention also provides a kind of preparation methods of bastard coal ground mass mine cemented filling material, including following interior
Hold:
Gangue, steel slag, carbide slag, desulfurized gypsum and blast-furnace cinder are mixed, grinding setting time in ball mill are added,
The time is 45min~60min, and mixture A is made；
Early strength agent, water-reducing agent, swelling agent and stabilizer are proportionally added in mixing plant and mixed, mixing is made
Expect B；
Mixture A and mixture B are poured into uniform stirring setting time in red mud soup, which is 10~20min, adds water
It is adjusted to the design ratio of mud, the ratio of mud is 0.6~1.4:1, and is stirred, and mixing time is 10~20min.
Embodiment 1
A kind of bastard coal ground mass mine cemented filling material, including red mud soup, gangue, blast-furnace cinder, steel slag, electric calcium carbide
Slag, desulfurized gypsum, early strength agent, water-reducing agent, swelling agent and stabilizer.
Red mud soup has strong basicity, and pH value is 12.1~13, can destroy the original structure with potential activity substance, pass through
It crosses aquation and forms more stable structure, improve the working performance of material.Blast-furnace cinder contains a large amount of vitreum, in red mud soup
There is stronger activity after excitation, material can be made to obtain better mechanical property.Desulfurized gypsum is gone back while providing calcium source
Play the role of slow setting.Component contained by carbide slag and gangue play the role of cooperative compensating, effectively raise structure
Compactness.
Red mud soup, gangue, blast-furnace cinder, steel slag, the parts by weight difference of carbide slag and desulfurized gypsum are as follows: 40~50
Part, 35~45 parts, 10~20 parts, 5~10 parts, 5~10 parts and 5~10 parts, early strength agent, water-reducing agent, swelling agent and stabilizer
Parts by weight difference is as follows: 2~3 parts, 1~2 part, 1~2 part and 1~1.5 part.
The main chemical compositions of gangue are as follows: SiO2: 53%~65%, Al2O3: 17%~34%, Fe2O3: 2.39%~
15.23%, CaO:0.89%~4.11% is potential gelation activity substance, and is free of radioactive element.
Red mud soup is the red mud soup that Bayer process generates, and moisture content is 45%~65%, and pH value is 12.1~13, and red mud soup is straight
It fetches derived from aluminum oxide production process.
Steel slag is electric furnace slag, and steel slag includes calcium oxide CaO and iron oxide Fe2O3, steel slag further includes silica SiO2With
Aluminum oxide Al2O3, calcium oxide, iron oxide, the composition of silica and iron oxide be successively as follows: 24.7%~34.9%,
23.1%~48.1%, 12.8%~21.5% and 1.8%~15.8%, steel slag can CaO in effective supplementary material and
Fe2O3。
Preferably, the parts by weight of each raw material are as follows in filler, and 40~45 parts of red mud soup, 35~40 parts of gangue,
12~15 parts of miberal powder, 5~6 parts of steel slag, 5~6 parts of carbide slag, 5~6 parts of desulfurized gypsum, 2.5~3 parts of early strength agent, water-reducing agent 1~
1.5 parts, 1~1.5 part of swelling agent, 1~1.5 part of stabilizer.
Alternatively, the parts by weight of each raw material are as follows in filler in other embodiments, and 45~50 parts of red mud soup, coal
30~35 parts of spoil, 10~13 parts of miberal powder, 7~9 parts of steel slag, 5~6 parts of carbide slag, 5~6 parts of desulfurized gypsum, early strength agent 1.5~2
Part, 1.5~2 parts of water-reducing agent, 1~1.5 part of swelling agent, 1~1.5 part of stabilizer.
In addition, early strength agent be calcium chloride, vermiculite power, in calcium formate at least two materials mixing, water-reducing agent is lignin
Sulfonate, sodium naphthalene sulfonate, polycarboxylic acids, in casein at least two materials mixing, swelling agent is graphite powder, calcium oxide, anhydrous
The mixing of at least two materials in calcium sulfate, stabilizer be periclase, polycarboxylate, in flyash at least two mixing.
The filler that the present embodiment 1 provides has the advantage of following aspect:
1) it improves that gangue added value is low, economic benefit is low, using statuses such as technological lags, realizes the rule of gangue
Modelling, high value added utilization, are more effectively and rationally utilized gangue, solve raw caused by the unordered stacking in gangue ground
State environment and social and environmental problems.
2) red mud selected is the red mud soup that do not dry, and the technique for saving drying is excited using the strong basicity of red mud soup
The potential gelation activity of gangue, greatly reduces the cost of alkali-activator, keeps slip casting process more environmentally-friendly, realizes green and applies
The purpose of work.
3) raw material used is easily obtained, and simple process is easy to operate.
Embodiment 2
A kind of preparation method of bastard coal ground mass mine cemented filling material, including following content:
1) gangue 118g, blast-furnace cinder 61g, electric furnace slag 21g, carbide slag 21g, desulfurized gypsum 21g are taken, mixing is added
Mixture A is made in powder 50min in ball mill.
2) calcium formate 6.4g, vermiculite power 6.4g are taken, the two mixing is configured to complex accelerator.
Sodium naphthalene sulfonate 2.6g, casein 2.6g are taken, the two mixing is configured to composite water-reducing agent.
Graphite powder 2.6g, dead plaster 2.6g are taken, the two mixing is configured to composite expanding agent.
Periclase 1.8g, polycarboxylate 1.8g are taken, the two mixing is configured to compound stabilizer.
Above-mentioned complex accelerator, composite water-reducing agent, composite expanding agent and compound stabilizer are added in blender and mixed
It closes, mixture B is made.
3) aqueous red mud (moisture content 56%, specific surface area 240m are taken2/ kg, pH value 12.1~13) 249g, it will be above-mentioned mixed
It closes material A and mixture B to be added thereto, stirs 15min, add water 400g, stir 15min.
Strength test is carried out to the filler that the above method obtains, strength test method: is by the ratio of mud in laboratory
0.8:1 design pours sample using 70.7 × 70.7 × 70.7mm die trial, and curing temperature is 20 DEG C, humidity 90%, acquisition
Data are as follows:
Embodiment 3
A kind of preparation method of bastard coal ground mass mine cemented filling material, including following content:
1) gangue 94g, blast-furnace cinder 42g, electric furnace slag 29g, carbide slag 29g, desulfurized gypsum 29g are taken, mixing is added
Mixture A is made in powder 50min in ball mill.
2) calcium chloride 3.9g, vermiculite power 3.9g are taken, the two mixing is configured to complex accelerator.
Sodium naphthalene sulfonate 3.9g, polycarboxylate water-reducer SP-401 3.9g are taken, the two mixing is configured to composite water-reducing agent.
Graphite powder 2.6g, dead plaster 2.6g are taken, the two mixing is configured to composite expanding agent.
Polycarboxylate 1.8g, flyash 1.8g are taken, the two mixing is configured to compound stabilizer.
Above-mentioned complex accelerator, composite water-reducing agent, composite expanding agent and compound stabilizer are added in blender and mixed
It closes, mixture B is made.
3) aqueous red mud (moisture content 56%, specific surface area 240m are taken2/ kg, pH value 12.1~13) 220g, it will be above-mentioned mixed
It closes material A and mixture B to be added thereto, stirs 15min, add water 400g, stir 15min.
Strength test method: it designs in laboratory by the ratio of mud for 0.8:1, is poured using 70.7 × 70.7 × 70.7mm die trial
Sample is built, curing temperature is 20 DEG C, humidity 90%.
Embodiment 4
A kind of preparation method of bastard coal ground mass mine cemented filling material, including following content:
1) gangue 109g, blast-furnace cinder 69g are taken, ball is added in electric furnace slag 31g carbide slag 31g, desulfurized gypsum 31g mixing
Mixture A is made in powder 50min in grinding machine.
2) calcium chloride 4.9g, triethanolamine 4.9g are taken, the two mixing is configured to complex accelerator.
Sodium naphthalene sulfonate 2.9g, polycarboxylate water-reducer SP-401 2.9g are taken, the two mixing is configured to composite water-reducing agent.
Magnesia 2.9g, dead plaster 2.9g are taken, the two mixing is configured to composite expanding agent.
Periclase 2.1g, flyash 2.1g are taken, the two mixing is configured to compound stabilizer.
Above-mentioned complex accelerator, composite water-reducing agent, composite expanding agent and compound stabilizer are added in blender and mixed
It closes, mixture B is made.
3) aqueous red mud (moisture content 56%, specific surface area 240m are taken2/ kg, pH value 12.1~13) 189g, it will be above-mentioned mixed
It closes material A and mixture B to be added thereto, stirs 15min, add water 400g, stir 15min.
Strength test method: it designs in laboratory by the ratio of mud for 0.8:1, is poured using 70.7 × 70.7 × 70.7mm die trial
Sample is built, curing temperature is 20 DEG C, humidity 90%.
The verifying of 2-4 through the embodiment of the present invention, filler provided by the invention can satisfy filling in mine demand,
Compression strength is met the requirements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of bastard coal ground mass mine cemented filling material, which is characterized in that including red mud soup, gangue, blast-furnace cinder, steel
Slag, carbide slag and desulfurized gypsum.
2. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that further include early strong
Agent, water-reducing agent, swelling agent and stabilizer.
3. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that the red mud soup,
Gangue, blast-furnace cinder, steel slag, the parts by weight difference of carbide slag and desulfurized gypsum are as follows: 40~50 parts, 35~45 parts, 10~
20 parts, 5~10 parts, 5~10 parts and 5~10 parts.
4. a kind of bastard coal ground mass mine cemented filling material according to claim 2, which is characterized in that the early strength agent,
The parts by weight difference of water-reducing agent, swelling agent and stabilizer is as follows: 2~3 parts, 1~2 part, 1~2 part and 1~1.5 part.
5. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that the red mud soup is
The red mud soup that Bayer process generates, moisture content are 45%~65%, and pH value is 12.1~13.
6. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that the steel slag is electricity
Furnace steel slag, steel slag include calcium oxide and iron oxide.
7. a kind of bastard coal ground mass mine cemented filling material according to claim 7, which is characterized in that the steel slag also wraps
Include silica and iron oxide, calcium oxide, iron oxide, the composition of silica and iron oxide are successively as follows: 24.7%~
34.9%, 23.1%~48.1%, 12.8%~21.5% and 1.8%~15.8%.
8. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that the red mud soup,
Gangue, blast-furnace cinder, steel slag, the parts by weight difference of carbide slag and desulfurized gypsum are as follows: 40~45 parts, 35~40 parts, 12~
15 parts, 5~6 parts, 5~6 parts and 5~6 parts.
9. a kind of bastard coal ground mass mine cemented filling material according to claim 1, which is characterized in that the red mud soup,
Gangue, blast-furnace cinder, steel slag, the parts by weight difference of carbide slag and desulfurized gypsum are as follows: 45~50 parts, 30~35 parts, 10~
13 parts, 7~9,5~6 parts and 5~6 parts.
10. a kind of preparation method of bastard coal ground mass mine cemented filling material of any of claims 1-9, feature
It is, including following content:
Gangue, steel slag, carbide slag, desulfurized gypsum and blast-furnace cinder are mixed, grinding setting time in ball mill is added, is made
Mixture A；
Early strength agent, water-reducing agent, swelling agent and stabilizer are proportionally added in mixing plant and mixed, mixture B is made；
Mixture A and mixture B are poured into uniform stirring setting time in red mud soup, are added with water to the design ratio of mud, and carry out
Stirring.
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| CN110776281A (en) * | 2019-10-28 | 2020-02-11 | 山东大学 | Regenerated powder composite mine cemented filling material and preparation method thereof |
| CN111018423A (en) * | 2019-12-30 | 2020-04-17 | 长安大学 | Coal gangue-based composite geopolymer grouting filling material and preparation method thereof |
| CN111960754A (en) * | 2020-07-09 | 2020-11-20 | 山东省邱集煤矿有限公司 | Solid waste base grouting material for mine water disaster control roof filling effect and preparation method thereof |
| CN112408933A (en) * | 2020-11-24 | 2021-02-26 | 肇庆市武大环境技术研究院 | Curing agent material, preparation method thereof and application thereof in tailing sand consolidation |
| CN112707690A (en) * | 2020-12-31 | 2021-04-27 | 山西省交通科技研发有限公司 | Full-industrial solid waste filling material for large-cavity goaf and preparation method thereof |
| CN113429141A (en) * | 2021-06-22 | 2021-09-24 | 广州大学 | Cementing material and preparation method and application thereof |
| CN114479874A (en) * | 2022-01-28 | 2022-05-13 | 山东大学 | Red mud-based heavy metal curing agent and preparation method and application thereof |
| CN115466094A (en) * | 2022-08-25 | 2022-12-13 | 中煤科工西安研究院(集团)有限公司 | Industrial solid waste base cementing grouting filling material, preparation method and application |
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Application publication date: 20190920 |