CN106699078B - A kind of coal mine early-strength low cost filler and its preparation method - Google Patents
A kind of coal mine early-strength low cost filler and its preparation method Download PDFInfo
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- CN106699078B CN106699078B CN201611183776.7A CN201611183776A CN106699078B CN 106699078 B CN106699078 B CN 106699078B CN 201611183776 A CN201611183776 A CN 201611183776A CN 106699078 B CN106699078 B CN 106699078B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
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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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Abstract
The invention belongs to technical field of coal mine, and in particular to a kind of coal mine early-strength low cost filler and its preparation method.The filler is made of the mixture of water, cementitious matter, exciting agent, auxiliary spark excitation agent and driving cash and furnace bottom ash；Wherein water accounts for the 21% ~ 23% of filler, cementitious matter is the mixture of Portland clinker, flyash and water-granulated slag, account for the 15.2% ~ 19.5% of filler, exciting agent accounts for the 0.5% ~ 0.9% of cementitious matter, auxiliary spark excitation agent is the mixture of sulphoaluminate cement clinker and desulfurized gypsum, the 2.5% of cementitious matter is accounted for, surplus is the mixture for tunneling cash and furnace bottom ash.Early strength of the present invention is high, good flowing properties, bleeding rate is small, meet requirement of most of coal mines to filler performance, the above are solid waste and waste water of mine for the 93% of filler gross mass, filler cost is reduced, waste is taken full advantage of, there is good economic benefit and environmental benefit.
Description
Technical field
The invention belongs to technical field of coal mine, are related to a kind of coal mine filling material, and in particular to a kind of coal mine early-strength is low
Cost filler and its preparation method.
Background technique
Gangue is the by-product of coal mining, driving and mineral process, and gangue storage in China's is in 4,000,000,000 t or more at present
(more than the 40% of China's solid waste total amount), the spoil generated in exploitation engineering are deposited in earth's surface, not only occupy cultivated land, certain
Spontaneous combustion can occur for hillock in a little situations, and generate a variety of pernicious gases, seriously endanger human health, with certain calorific capacity
Gangue can be used for generating electricity, and a large amount of sandstone, the limestone class spoil that generate during stone drifting are seldom utilized.
Flyash is the volcano grey matter solid waste that thermal power plant generates during coal fired power generation, steel plant's smelting etc..
The annual flyash accumulating amount in China is more than 1,100,000,000 t, to be also incremented by every year with 100,000,000 t or so discharge amount, flyash
A variety of harm will be caused by being deposited in surrounding city: occupy a large amount of arable land, pollute atmosphere, to crop growth and human and livestock health at
It seriously endangers.First is that the fine ash for being discharged and collecting with flue gas, referred to as flyash；Second is that be made of the molten mass of larger particles, from
The lime-ash of boiler bottom discharge, referred to as furnace bottom ash.General flyash yield accounts for 70%~90%, and furnace bottom ash accounts for 30%~10%,
Flyash can be used as cement and concrete refers and synthesizes material, can be used for making flyash brick, is widely used at present, price compared with
Height, and since furnace bottom ash activity is low, particle is larger and uneven, is seldom utilized, therefore price is lower.
Coal mine filling production technique is a kind of green mining technique of science, and the following field of mining developing direction it
One, China's coal-mine filling mining, the cemented filling material mainly used have at present: high-water material, ultrahigh water material, lotion material
Material, Paste-like body material, high concentration tailing filling material etc., wherein high-water material and ultrahigh water material have excellent mobility
Can, and have the advantages that rapid hardening, early strong, ointment material and Paste-like body material have the advantages that the early height of intensity by force, bleeding rate are small,
But above-mentioned material there is problems in practical applications:
1. filler is at high cost: due to having added a large amount of sulphate aluminium cements, stone in high-water material and ultrahigh water material
Ash, gypsum, all kinds of exciting agents etc. cause its material cost high, every filling 1m3The expense in goaf, filler can
To 400 yuan~800 yuan, ointment material, Paste-like body material and crude tailings cementing material, due to cement mixing content it is high (usually 8% with
On), admixture dosage fills 1m 2% or more3Goaf, filler cost is at 100 yuan or more.
2. being difficult to take into account slurry mobility, ointment material and Paste-like body material under conditions of guaranteeing early strength to mention
High early strength, reduces bleeding rate, and mass concentration usually 80% or more, requires, it usually needs improve pumping to reach conveying
Pressure, and it is easy to cause pipeline jam accident.
3. under conditions of guaranteeing transportation performance and early strength, it is difficult to which take into account slurry bleeding rate: high concentration crude tailings fill
Material concentration is filled out between 72%~79%, mobility is preferable, self-flowing pastefill or pressurization pumping can be used, but due to its bleeding
Rate is high, and after being filled with goaf, obturation will lead to the reduction of its consolidation strength because of dehydration, while working face being caused to pollute.
Filling system is difficult to promote in coal mine, is largely due to cost problem, and the cost of filler itself
Very big specific gravity is occupied, therefore, New Coal Mine filler needs to reduce material cost first, secondary there are enough early stages strong
Degree is able to maintain self-support after form removal and undertakes the weight for being caving and directly pushing up, simultaneously, it is ensured that preferable mobility is with benefit
In conveying, lower bleeding rate, so that strength of filling mass still is able to meet the requirements after slurry dewatering.
Summary of the invention
The present invention is to solve the problems, such as that coal mine filling material cost is high, combines transportation performance, early strength and slurry
Bleeding rate discloses a kind of coal mine early-strength low cost filler and its preparation method.
To solve above-mentioned technical problem, the invention adopts the following technical scheme:
A kind of coal mine early-strength low cost filler, the filler is by water, cementitious matter, exciting agent, auxiliary spark excitation
The mixture composition of agent and driving cash and furnace bottom ash；Wherein water accounts for the 21%~23% of filler gross mass, and cementitious matter, which accounts for, to be filled
The 15.2%~19.5% of filling chock material gross mass, exciting agent account for the 0.5%~0.9% of cementitious matter gross mass, and auxiliary spark excitation agent accounts for
The 2.5% of cementitious matter gross mass, surplus are the mixture for tunneling cash and furnace bottom ash.
The cementitious matter is made of dry discharge fly ash, water-granulated slag and Portland clinker, wherein dry discharge fly ash:
Water-granulated slag: the mass ratio of Portland clinker is 2:1:1；The dry discharge fly ash is I grade of flyash or II grade of flyash.
The exciting agent is mixed by industrial NaCl and triethanolamine, and wherein the quality of triethanolamine accounts for the total matter of cementitious matter
The 0.03% of amount, remaining is industry NaCl；The content of NaCl is not less than 95% in the industry NaCl.
The auxiliary spark excitation agent is made of sulphoaluminate cement clinker and desulfurized gypsum, wherein sulphoaluminate cement clinker:
The mass ratio of desulfurized gypsum is 1:1；CaSO in the desulfurized gypsum4·2H2The mass fraction of O is not less than 93%, sulfate cement
Specific surface area after clinker grinding is not less than 360m2/ kg, specific surface area is not less than 320m after desulfurized gypsum grinding2/kg。
In the mixture of the driving cash and furnace bottom ash, cash: the mass ratio of furnace bottom ash are as follows: 1:1~3:1 is tunneled；Wherein dig
It is sandstone gangue or limestone gangue, SiO in sandstone gangue into cash2Mass fraction be 75%~85%, CaO quality
Score is 5%~10%, SiO in limestone gangue2Mass fraction be 15%~23%, CaO mass fraction be 55%~
63%, maximum particle diameter is no more than 5mm after driving cash is broken；Furnace bottom ash is the lime-ash of boiler bottom discharge, SiO in furnace bottom ash2's
Mass fraction is 42%~55%, Al2O3Mass fraction be 22%~30%, Fe2O3Mass fraction be 8%~13%,
The mass fraction of CaO is 4%~6%, and maximum particle diameter is no more than 2.5mm after screening.
A kind of preparation method of coal mine early-strength low cost filler, preparation steps are as follows:
(1) be crushed and sieve driving cash, sieve furnace bottom ash, by after screening driving cash and furnace bottom ash be uniformly mixed, complete
Tunnel the preparation of the mixture of cash and furnace bottom ash；
(2) by sulphoaluminate cement clinker, desulfurized gypsum, Portland clinker, dry discharge fly ash and water-granulated slag,
It is respectively put into ball mill, carries out grinding processing；
(3) dry discharge fly ash, water-granulated slag, the Portland clinker after grinding are uniformly mixed, complete cementitious matter
It prepares；By after grinding sulphoaluminate cement clinker and desulfurized gypsum be uniformly mixed, complete auxiliary spark excitation agent preparation, then,
It is stand-by after cementitious matter and auxiliary spark excitation agent are mixed；
(4) industrial NaCl is dissolved in the water simultaneously with triethanolamine, so that it is sufficiently dissolved and is mixed, completes exciting agent
It prepares；
(5) mixture that will tunnel cash and furnace bottom ash, is uniformly mixed again with mixed cementitious matter and auxiliary spark excitation agent,
Then exciting agent aqueous solution is added, is sufficiently stirred, is uniformly mixed it, can be prepared by coal mine early-strength low cost filler.
In the step (2), it is 360m that sulphoaluminate cement clinker grinding, which is handled to powder specific-surface area detection,2/ kg~400m2/
kg；Portland clinker grinding to powder specific-surface area detection is 360m2/ kg~400m2/kg；Dry discharge fly ash grinding is to powder ratio
Surface area is 400m2/ kg~450m2/kg；Water-granulated slag grinding to powder specific-surface area detection is 350m2/ kg~410m2/kg；Desulfurization
Gypsum grinding to powder specific-surface area detection is 320m2/ kg~360m2/kg。
The beneficial effects of the present invention are:
1. early strength is high: coal mine early-strength low cost filler provided by the invention, due to used coarse aggregate
For limestone and sandstone gangue, aggregate compression strength with higher itself, and furnace bottom ash is not only optimized and is filled as fine aggregate
The grain composition of filling chock material, while there is certain pozzolanic activity, strength of filling mass is contributed.And NaCl and triethanolamine
The excitation system of composition promotes the hydration reaction of cementitious matter system, generates the raising to obturation early strength and plays crucial make
Product hydrated calcium chloroaluminate.Portland clinker volume is no more than filler gross mass in filler of the present invention
4.9%, exciting agent volume is no more than the 0.17% of filler gross mass, and auxiliary spark excitation agent volume is no more than the total matter of filler
The 0.48% of amount, after slurry solidifies 16h, uniaxial compressive strength reaches as high as 0.51MPa, and 28d uniaxial compressive strength reaches as high as
7.08MPa, the intensity can meet requirement of most of coal mine gob fillings exploitations to filler intensity.
2. under the conditions of equality strength, filler is at low cost, be easy to obtain, environmental benefit is good: the invention discloses one kind
In the ingredient of coal mine early-strength low cost filler, driving cash, furnace bottom ash, dry discharge fly ash, water-granulated slag, desulfurized gypsum,
Waste water of mine is waste, these ingredients account for the 93.9%~95.4% of filler gross mass, is utilized to greatest extent useless
Gurry protects ecological environment, and the maximum driving cash of dosage can obtain on the spot, and furnace bottom ash is seldom utilized at present, can also be compared with
Low cost obtains；The cost of filler depends primarily on the volume of cement and additive, and cement is ripe in filler of the present invention
Material volume is between 3.8%~4.9%, and Portland clinker, sulphoaluminate cement clinker are in cement production process
Semi-finished product, price will be lower than finished cement；Exciting agent and auxiliary spark excitation agent volume are no more than 0.66%, to further drop
Low filler cost, through calculating, a kind of coal mine early-strength low cost filler of the present invention, when 1d intensity be 0.2MPa~
When 0.51MPa, 28d intensity are 4.72MPa~7.08MPa, material cost is 8.99~11.85 yuan/ton.
3. good flowing properties, bleeding rate are low under the conditions of identical early strength and moisture content, setting time is adjustable: working as high concentration
In filler cementitious matter volume be 15.2%, moisture content (percentage that the quality of water accounts for cementitious material gross mass) be 21%~
23%, using the slump and divergence of the CA mortar divergence analyzer measurement filling slurry of 50 × 150 × 100mm, use
The bleeding rate of the bleeding rate measurement bucket measurement filling slurry of 185 × 200mm, when filler moisture content is 21%~23%, phase
Answer the slump between 114~134mm, for divergence between 182~205mm, filling slurry has excellent mobile performance, can
Improve pumping efficiency；80min bleeding rate is between 2.0%~4.0%, it is ensured that filling slurry during transportation, does not generate
Isolation to reduce the generation of pipeline jam accident, while can reduce obturation and owe to connect top amount, more effective to control under goaf top plate
Heavy and ground settlement；Presetting period, final setting time was between 365min~390min, the present invention between 255min~270min
Filler is when reaching the presetting period, it is ensured that obturation can support oneself after form removal and gib, and hold
The weight directly pushed up is carried on a shoulder pole, filler of the present invention can guarantee that obturation there are enough intensity carryings old when reaching final setting time
Top is come the pressure of top plate when pressing, so that controlroof sinks and ground settlement.
4. coal mine early-strength low cost filler disclosed by the invention, the effect of each ingredient and the mechanism for generating intensity
Are as follows: gangue is coarse aggregate, and furnace bottom ash is fine aggregate, both aggregates are the distinctive ingredients of the present invention, on the one hand, to greatest extent
Material cost is reduced, on the other hand, coarse aggregate is sandstone or limestone, and compression strength is high, so that strength of filling mass is increased, furnace
Bottom ash is filled in coarse aggregate gap as fine aggregate, and cementitious matter is powder filled in fine aggregate gap, to optimize
Grade is matched, meanwhile, furnace bottom ash has pozzolanic activity, can further improve the intensity of filler.The effect of cementitious matter be with
After water reacts, aggregate can be cemented to firm entirety by the hydrated product of generation, and exciting agent and auxiliary spark excitation agent are
In order to promote the hydration reaction of cementitious matter, it is made more fully to play bonding capacity.
5. coal mine early-strength low cost filler disclosed by the invention, wherein cementitious matter include Portland clinker,
Dry discharge fly ash, water-granulated slag, exciting agent be industry NaCl and triethanolamine, auxiliary spark excitation agent be sulphoaluminate cement clinker with
Hydration reaction occurs after desulfurized gypsum, cementitious matter and water mixing, by the XRD analysis to hydrated product it is found that hydrated product master
Have: entringite (AFt), hydrated calcium silicate gel (C-S-H) and hydrated calcium chloroaluminate (Friedel salt)；Wherein entringite pair
The early epistasis of filler can play an important role, and entringite is mainly by the anhydrous sulphur aluminic acid in sulphoaluminate cement clinker
Dihydrate gypsum in calcium, desulfurized gypsum, the tricalcium aluminate in Portland clinker, which reacts, to be generated；Aquation silicic acid in hydrated product
Calcium gel (C-S-H) contributes maximum to filler later strength, mainly by the tricalcium silicate in Portland clinker
(C3S), dicalcium silicate (C2S generation) is reacted with water.Hydrated calcium chloroaluminate (Friedel salt) is the distinctive water of this filler
Change product, it is also the crucial hydrated product for improving the early strong intensity of obturation, it is by the tricalcium aluminate C in clinker3A with
Cl in exciting agent NaCl-Reaction generates.Effect of the triethanolamine to gelling system early strength are as follows: in clinker aquation mistake
Cheng Zhong, Ca2+And Fe3+Equal cations can generate soluble easily in water with the unshared electronic action of a pair of N atom in triethanolamine
Complex ion hinder aquation initial stage C to improve the dissolubility of cement particle surface3A and C4The surface AF forms not permeable
Permeable layers accelerate C3A and C4The aquation of AF promotes the generation of hydrated calcium chloroaluminate (Friedel salt).
6. the microstructure of hydrated product is observed by SEM, with the incorporation of exciting agent, cloud in cementitious matter hydrated product
The C-S-H gel of shape mutually overlaps, and finds platelike crystal in early hydration sample, according to its shape characteristic and XRD analysis knot
Fruit speculates that it may be Friedel salt crystal；It is since the excitation of NaCl is formed, length and width 3~6 μm it
Between, it 0.3 μm of thickness or so, is prevalent in hydrated product, and be securely embedded in C-S-H gel, forms fine and close entirety,
Macroscopically showing as greatly improving for strength of filling mass；Cementitious matter conserves the XRD analysis result of 3d as shown in Figure 1, microcosmic shape
Looks are as shown in figure 3, cementitious matter conserves the XRD analysis result of 28d as shown in Fig. 2, microscopic appearance is as shown in Figure 4.
7. improving the mechanism of filler intensity by optimization driving cash and furnace bottom ash grain composition: will driving cash it is broken after
Mix and match is carried out according to a certain percentage with the furnace bottom ash after screening, makes the particle of two kinds of ingredients by granule size, it is regular
Ground assembled arrangement, small aggregate grain packing form closely knit entirety into the gap of bulky grain, while can reduce cementitious matter use
Amount.
Detailed description of the invention
Fig. 1 is the XRD analysis result figure that cementitious matter conserves 3d；Wherein Q: quartz, F:Friedel salt, E: entringite, C:C-
S-H gel, K:Ca (OH)2。
Fig. 2 is the XRD analysis result figure that cementitious matter conserves 28d；Wherein Q: quartz, F:Friedel salt, E: entringite, C:
C-S-H gel.
Fig. 3 is the microscopic appearance figure that cementitious matter conserves 3d.
Fig. 4 is the microscopic appearance figure that cementitious matter conserves 28d.
Specific embodiment
A kind of coal mine early-strength low cost filler, the filler is by water, cementitious matter, exciting agent, auxiliary spark excitation
The mixture composition of agent and driving cash and furnace bottom ash；Wherein water accounts for the 21%~23% of filler gross mass, and cementitious matter, which accounts for, to be filled
The 15.2%~19.5% of filling chock material gross mass, exciting agent account for the 0.5%~0.9% of cementitious matter gross mass, and auxiliary spark excitation agent accounts for
The 2.5% of cementitious matter gross mass, surplus are the mixture for tunneling cash and furnace bottom ash.
The cementitious matter is made of dry discharge fly ash, water-granulated slag and Portland clinker, wherein dry discharge fly ash:
Water-granulated slag: the mass ratio of Portland clinker is 2:1:1；The dry discharge fly ash is I grade of flyash or II grade of flyash.
The exciting agent is mixed by industrial NaCl and triethanolamine, and wherein the quality of triethanolamine accounts for the total matter of cementitious matter
The 0.03% of amount, remaining is industry NaCl；The content of NaCl is not less than 95% in the industry NaCl.
The auxiliary spark excitation agent is made of sulphoaluminate cement clinker and desulfurized gypsum, wherein sulphoaluminate cement clinker:
The mass ratio of desulfurized gypsum is 1:1；CaSO in the desulfurized gypsum4·2H2The mass fraction of O is not less than 93%, sulfate cement
Specific surface area after clinker grinding is not less than 360m2/ kg, specific surface area is not less than 320m after desulfurized gypsum grinding2/kg。
In the mixture of the driving cash and furnace bottom ash, cash: the mass ratio of furnace bottom ash are as follows: 1:1~3:1 is tunneled；Wherein dig
It is sandstone gangue or limestone gangue, SiO in sandstone gangue into cash2Mass fraction be 75%~85%, CaO quality
Score is 5%~10%, SiO in limestone gangue2Mass fraction be 15%~23%, CaO mass fraction be 55%~
63%, maximum particle diameter is no more than 5mm after driving cash is broken；Furnace bottom ash is the lime-ash of boiler bottom discharge, SiO in furnace bottom ash2's
Mass fraction is 42%~55%, Al2O3Mass fraction be 22%~30%, Fe2O3Mass fraction be 8%~13%,
The mass fraction of CaO is 4%~6%, and maximum particle diameter is no more than 2.5mm after screening.
A kind of preparation method of coal mine early-strength low cost filler, preparation steps are as follows:
(1) be crushed and sieve driving cash, sieve furnace bottom ash, by after screening driving cash and furnace bottom ash be uniformly mixed, complete
Tunnel the preparation of the mixture of cash and furnace bottom ash；
(2) by sulphoaluminate cement clinker, desulfurized gypsum, Portland clinker, dry discharge fly ash and water-granulated slag,
It is respectively put into ball mill, carries out grinding processing；
(3) dry discharge fly ash, water-granulated slag, the Portland clinker after grinding are uniformly mixed, complete cementitious matter
It prepares；By after grinding sulphoaluminate cement clinker and desulfurized gypsum be uniformly mixed, complete auxiliary spark excitation agent preparation, then,
It is stand-by after cementitious matter and auxiliary spark excitation agent are mixed；
(4) industrial NaCl is dissolved in the water simultaneously with triethanolamine, so that it is sufficiently dissolved and is mixed, completes exciting agent
It prepares；
(5) mixture that will tunnel cash and furnace bottom ash, is uniformly mixed again with mixed cementitious matter and auxiliary spark excitation agent,
Then exciting agent aqueous solution is added, is sufficiently stirred, is uniformly mixed it, can be prepared by coal mine early-strength low cost filler.
In the step (2), it is 360m that sulphoaluminate cement clinker grinding, which is handled to powder specific-surface area detection,2/ kg~400m2/
kg；Portland clinker grinding to powder specific-surface area detection is 360m2/ kg~400m2/kg；Dry discharge fly ash grinding is to powder ratio
Surface area is 400m2/ kg~450m2/kg；Water-granulated slag grinding to powder specific-surface area detection is 350m2/ kg~410m2/kg；Desulfurization
Gypsum grinding to powder specific-surface area detection is 320m2/ kg~360m2/kg。
The present invention is further illustrated below with reference to embodiment, but is not limited to following embodiment:
Embodiment 1, embodiment 2, in embodiment 3, driving gangue is taken from Zheng Mei group reed ditch Gangue Hill, main
It to be sandstone gangue and limestone gangue, chemical component is as shown in table 1, and furnace bottom ash is taken from east wind power plant, Zheng Mei group,
Its chemical component is as shown in table 2.
The main chemical compositions (unit %) of 1 Lu Goukuang of table driving gangue
| Type | SiO2 | Al2O3 | CaO | Fe2O3 | MgO |
| Sandstone gangue | 83.57 | 1.28 | 6.62 | 1.12 | 0.02 |
| Limestone gangue | 18.34 | 2.51 | 59.33 | 5.24 | 3.40 |
2 furnace bottom ash chemical component (unit %) of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 49.36 | 27.11 | 11.48 | 5.41 | 2.13 | 1.01 | 0.77 | 0.04 |
Portland clinker is taken from the Zhengzhou cement plant Long Li in cementitious matter, and main chemical compositions are as shown in table 3, does
Discharge coal ash is taken from east wind power plant, Zheng Mei group, and main chemical compositions are as shown in table 4, and water-granulated slag is taken from Tangshan steel
Factory, main chemical compositions are as shown in table 5.
The chemical component (unit %) of 3 Portland clinker of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 22.67 | 5.39 | 3.87 | 64.51 | - | 0.27 | - | - |
The chemical component (unit %) of 4 dry discharge fly ash of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 53.40 | 24.40 | 10.30 | 7.10 | 2.40 | 0.70 | 0.83 | 0.08 |
The chemical component (unit %) of 5 water-granulated slag of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 30.80 | 14.70 | 2.67 | 38.10 | 8.84 | 2.77 | 0.81 | 0.13 |
Sulphoaluminate cement clinker is taken from Tangshan Polar Bear Building Material Co., Ltd. in auxiliary spark excitation agent, primary chemical at
Divide as shown in table 6, desulfurized gypsum is taken from Yueyang Huaneng Group power plant, and main component is as shown in table 7.
The chemical component (unit %) of 6 sulphate aluminium cement of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | Loss |
| 9.57 | 32.36 | 2.73 | 42.48 | 2.32 | 8.13 | 1.33 | 0.25 |
The chemical component (unit %) of 7 desulfurized gypsum of table
| SO3 | CaO | SiO2 | MgO | Al2O3 | Fe2O3 | MgO | Loss |
| 42.4 | 31.6 | 2.7 | 2.32 | 0.7 | 0.5 | 1.0 | 19.2 |
In exciting agent, industrial NaCl is taken from Yantai Guang Sheng salinization Co., Ltd, wherein NaCl content >=95%, three ethyl alcohol
Amine is taken from Shanghai sincerity instrument store, wherein effective component N (CH2CH2OH)3Content is no less than 85%.
Embodiment 1
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 35min or so, make its powder ratio
Surface area reaches 360m2/kg.Dry discharge fly ash is put into ball mill grinding 25min, until powder specific-surface area detection reaches 450m2/ kg,
Water-granulated slag is put into ball mill grinding 45min, until powder specific-surface area detection reaches 350m2Desulfurized gypsum is put into ball mill by/kg
Grinding 35min, until powder specific-surface area detection reaches 360m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to partial size 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm,
Gangue is uniformly mixed with furnace bottom ash according to mass ratio for 1:1, gangue and furnace bottom ash mixture is made, with mixture benefit
Sufficient filler.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 2
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 45min, make its powder specific surface
Product reaches 400m2/kg.Dry discharge fly ash is put into ball mill grinding 15min, until powder specific-surface area detection reaches 400m2/ kg, by water
Slag of quenching is put into ball mill grinding 45min, until powder specific-surface area detection reaches 350m2Desulfurized gypsum is put into ball mill grinding by/kg
35min, until powder specific-surface area detection reaches 360m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to partial size 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm,
Gangue is uniformly mixed with furnace bottom ash according to mass ratio for 2:1, gangue and furnace bottom ash mixture is made, with mixture benefit
Sufficient filler.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 3
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min, make its powder specific surface
Product reaches 380m2/kg.Dry discharge fly ash is put into ball mill grinding 19min, until powder specific-surface area detection reaches 425m2/ kg, by water
Slag of quenching is put into ball mill grinding 50min, until powder specific-surface area detection reaches 380m2Desulfurized gypsum is put into ball mill grinding by/kg
30min, until powder specific-surface area detection reaches 340m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to partial size 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm,
Gangue is uniformly mixed with furnace bottom ash according to mass ratio for 3:1, gangue and furnace bottom ash mixture is made, with mixture benefit
Sufficient filler.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
The step of according to embodiment 1, embodiment 2 and embodiment 3, prepares early-strength low cost filler, to its performance
Dependence test is carried out, measurement sample maximum particle diameter is less than 5mm, and closer to the granularity of mortar mixture, therefore, the slump is surveyed
The CA mortar divergence analyzer of 50 × 150 × 100mm is used to be measured, bleeding rate measurement mainly uses 185 × 200mm
Bleeding rate measure bucket, uniaxial compressive strength is measured using TYE3000 cement mortar anti-folding and anti-pressing strength-testing machine, is tested
The results are shown in Table 8:
8 embodiment 1-3 test result of table
Embodiment 4, embodiment 5, in embodiment 6, driving gangue is taken from Zheng Mei group reed ditch Gangue Hill, main
It to be sandstone gangue and limestone gangue, chemical component is as shown in table 9, and furnace bottom ash is taken from east wind power plant, Zheng Mei group,
Its chemical component is as shown in table 10.
The main chemical compositions (unit %) of 9 reed ditch mine gangue of table
| Type | SiO2 | Al2O3 | CaO | Fe2O3 | MgO |
| Sandstone gangue | 80 | 1.5 | 7.5 | 1.13 | 0.03 |
| Limestone gangue | 19 | 2.5 | 59 | 5.25 | 3.42 |
10 furnace bottom ash chemical component (unit %) of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 48.5 | 26.5 | 10.5 | 5 | 2.14 | 1.02 | 0.78 | 0.05 |
Portland clinker is taken from the Zhengzhou cement plant Long Li in cementitious matter, and main chemical compositions are as shown in table 3, does
Discharge coal ash is taken from east wind power plant, Zheng Mei group, and main chemical compositions are as shown in table 4, and water-granulated slag is taken from Tangshan steel
Factory, main chemical compositions are as shown in table 5.
Sulphoaluminate cement clinker is taken from Tangshan Polar Bear Building Material Co., Ltd. in auxiliary spark excitation agent, primary chemical at
Divide as shown in table 6, desulfurized gypsum is taken from Yueyang Huaneng Group power plant, and main component is as shown in table 7.
In exciting agent, industrial NaCl is taken from Yantai Guang Sheng salinization Co., Ltd, wherein NaCl content >=95%, three ethyl alcohol
Amine is taken from Shanghai sincerity instrument store, wherein effective component N (CH2CH2OH)3Content is no less than 85%.
Embodiment 4
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min, make its powder specific surface
Product reaches 385m2/kg.Dry discharge fly ash is put into ball mill grinding 18min, until powder specific-surface area detection reaches 415m2/ kg, by water
Slag of quenching is put into ball mill grinding 55min, until powder specific-surface area detection reaches 400m2Desulfurized gypsum is put into ball mill grinding by/kg
38min, until powder specific-surface area detection reaches 350m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.2% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 5
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min, make its powder specific surface
Product reaches 370m2/kg.Dry discharge fly ash is put into ball mill grinding 20min, until powder specific-surface area detection reaches 435m2/ kg, by water
Slag of quenching is put into ball mill grinding 50min, until powder specific-surface area detection reaches 370m2/kg.Desulfurized gypsum is put into ball mill grinding
32min, until powder specific-surface area detection reaches 350m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 17.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 6
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min, make its powder specific surface
Product reaches 380m2/kg.Dry discharge fly ash is put into ball mill grinding 15min, until powder specific-surface area detection reaches 400m2/ kg, by water
Slag of quenching is put into ball mill grinding 52min, until powder specific-surface area detection reaches 390m2/kg.Desulfurized gypsum is put into ball mill grinding
30min, until powder specific-surface area detection reaches 335m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 19.5% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
The step of according to embodiment 4, embodiment 5 and embodiment 6, prepares early-strength low cost filler, to its performance
Dependence test is carried out, measurement sample maximum particle diameter is less than 5mm, and closer to the granularity of mortar mixture, therefore, the slump is surveyed
The CA mortar divergence analyzer of 50 × 150 × 100mm is used to be measured, bleeding rate measurement mainly uses 185 × 200mm
Bleeding rate measure bucket, uniaxial compressive strength is measured using TYE3000 cement mortar anti-folding and anti-pressing strength-testing machine, is tested
As a result as shown in table 11:
11 embodiment 4-6 test result of table
Embodiment 7, embodiment 8, in embodiment 9, driving gangue is taken from Zheng Mei group reed ditch Gangue Hill, main
It to be sandstone gangue and limestone gangue, chemical component is as shown in table 12, and furnace bottom ash is taken from east wind power plant, Zheng Mei group,
Its chemical component is as shown in table 13.
The main chemical compositions (unit %) of 12 reed ditch mine gangue of table
| Type | SiO2 | Al2O3 | CaO | Fe2O3 | MgO |
| Sandstone gangue | 75 | 1.51 | 5 | 1.13 | 0.03 |
| Limestone gangue | 23 | 2.52 | 55 | 5.26 | 3.43 |
The main chemical compositions (unit %) of 13 furnace bottom ash of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 42 | 26.5 | 8 | 4 | 2.15 | 1.02 | 0.77 | 0.05 |
Portland clinker is taken from the Zhengzhou cement plant Long Li in cementitious matter, and main chemical compositions are as shown in table 3, does
Discharge coal ash is taken from east wind power plant, Zheng Mei group, and main chemical compositions are as shown in table 4, and water-granulated slag is taken from Tangshan steel
Factory, main chemical compositions are as shown in table 5.
Sulphoaluminate cement clinker is taken from Tangshan Polar Bear Building Material Co., Ltd. in auxiliary spark excitation agent, primary chemical at
Divide as shown in table 6, desulfurized gypsum is taken from Yueyang Huaneng Group power plant, and main component is as shown in table 7.
In exciting agent, industrial NaCl is taken from Yantai Guang Sheng salinization Co., Ltd, wherein NaCl content >=95%, three ethyl alcohol
Amine is taken from Shanghai sincerity instrument store, wherein effective component N (CH2CH2OH)3Content is no less than 85%.
Embodiment 7
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 40min or so, make its powder ratio
Surface area reaches 400m2/kg.Dry discharge fly ash is put into ball mill grinding 20min, until powder specific-surface area detection reaches 420m2/ kg,
Water-granulated slag is put into ball mill grinding 60min, until powder specific-surface area detection reaches 410m2/kg.Desulfurized gypsum is put into ball mill
Grinding 30min, until powder specific-surface area detection reaches 360m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.5% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 8
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 40min, make its powder specific surface
Product reaches 390m2/ kg or so.Dry discharge fly ash is put into ball mill grinding 20min, until powder specific-surface area detection reaches 435m2/kg
Left and right, is put into ball mill grinding 50min for water-granulated slag, until powder specific-surface area detection reaches 370m2/ kg or so.By desulfurized gypsum
It is put into ball mill grinding 33min, until powder specific-surface area detection reaches 350m2/ kg or so.
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.7% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 9
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min or so, make its powder ratio
Surface area reaches 380m2/kg.Dry discharge fly ash is put into ball mill grinding 20min, until powder specific-surface area detection reaches 430m2/ kg,
Water-granulated slag is put into ball mill grinding 56min, until powder specific-surface area detection reaches 410m2/kg.Desulfurized gypsum is put into ball mill
Grinding 30min, until powder specific-surface area detection reaches 340m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filler, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Even, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching mine
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
The step of according to embodiment 7, embodiment 8 and embodiment 9, prepares early-strength low cost filler, to its performance
Dependence test is carried out, measurement sample maximum particle diameter is less than 5mm, and closer to the granularity of mortar mixture, therefore, the slump is surveyed
The CA mortar divergence analyzer of 50 × 150 × 100mm is used to be measured, bleeding rate measurement mainly uses 185 × 200mm
Bleeding rate measure bucket, uniaxial compressive strength is measured using TYE3000 cement mortar anti-folding and anti-pressing strength-testing machine, is tested
As a result as shown in table 14:
14 embodiment 7-9 test result of table
Embodiment 10, embodiment 11, in embodiment 12, driving gangue is taken from Zheng Mei group reed ditch coal mine waste rock
Mountain, predominantly sandstone gangue and limestone gangue, chemical component is as shown in Table 15, and furnace bottom ash is taken from Zheng Mei group east wind
Power plant, chemical component are as shown in table 16.
The main chemical compositions (unit %) of 15 reed ditch mine gangue of table
| Type | SiO2 | Al2O3 | CaO | Fe2O3 | MgO |
| Sandstone gangue | 85 | 1.28 | 10 | 1.12 | 0.02 |
| Limestone gangue | 15 | 2.51 | 63 | 5.24 | 3.40 |
The main chemical compositions (unit %) of 16 furnace bottom ash of table
| SiO2 | Al2O3 | Fe2O3 | CaO | MgO | SO3 | TiO | MnO |
| 55 | 30 | 13 | 6 | 2.13 | 1.01 | 0.77 | 0.04 |
Portland clinker is taken from the Zhengzhou cement plant Long Li in cementitious matter, and main chemical compositions are as shown in table 3, does
Discharge coal ash is taken from east wind power plant, Zheng Mei group, and main chemical compositions are as shown in table 4, and water-granulated slag is taken from Tangshan steel
Factory, main chemical compositions are as shown in table 5.
Sulphoaluminate cement clinker is taken from Tangshan Polar Bear Building Material Co., Ltd. in auxiliary spark excitation agent, primary chemical at
Divide as shown in table 6, desulfurized gypsum is taken from Yueyang Huaneng Group power plant, and main component is as shown in table 7.
In exciting agent, industrial NaCl is taken from Yantai Guang Sheng salinization Co., Ltd, wherein NaCl content >=95%, three ethyl alcohol
Amine is taken from Shanghai sincerity instrument store, wherein effective component N (CH2CH2OH)3Content is no less than 85%.
Embodiment 10
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 36min, make its powder specific surface
Product reaches 380m2/kg.Dry discharge fly ash is put into ball mill grinding 25min, until powder powder specific-surface area detection reaches 450m2/ kg,
Water-granulated slag is put into ball mill grinding 58min, until powder specific-surface area detection reaches 400m2/kg.Desulfurized gypsum is put into ball mill
Grinding 34min, until powder specific-surface area detection reaches 360m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filling material material, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Uniformly, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 21% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 11
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 37min or so, make its powder ratio
Surface area reaches 370m2/kg.Dry discharge fly ash is put into ball mill grinding 19min, until powder specific-surface area detection reaches 440m2/ kg,
Water-granulated slag is put into ball mill grinding 58min, until powder specific-surface area detection reaches 410m2/kg.Desulfurized gypsum is put into ball mill
Grinding 25min, until powder specific-surface area detection reaches 320m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filling material material, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Uniformly, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 22% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
Embodiment 12
Sulphoaluminate cement clinker and Portland clinker are put into ball mill grinding 38min or so, make its powder ratio
Surface area reaches 360m2/kg.Dry discharge fly ash is put into ball mill grinding 19min, until powder specific-surface area detection reaches 410m2/ kg,
Water-granulated slag is put into ball mill grinding 48min, until powder specific-surface area detection reaches 360m2/kg.Desulfurized gypsum is put into ball mill
Grinding 23min, until powder specific-surface area detection reaches 320m2/kg。
Dry discharge fly ash, water-granulated slag, Portland clinker after grinding is uniformly mixed according to mass ratio 2:1:1,
Three's gross mass accounts for the 15.4% of filling material material, and the sulphoaluminate cement clinker and desulfurized gypsum after grinding is added mix again
Uniformly, wherein sulphoaluminate cement clinker and desulfurized gypsum mass ratio are 1:1, and the two quality sum accounts for dry discharge fly ash, water quenching
The 2.5% of slag, Portland clinker mixture gross mass.
Industrial NaCl and triethanolamine are added in waste water of mine simultaneously, dissolve it sufficiently, wherein waste water of mine, which accounts for, fills
The gross mass of the 23% of filling chock material gross mass, industrial NaCl and triethanolamine accounts for the 0.9% of cementitious matter, and wherein triethanolamine is mixed
Amount accounts for the 0.03% of cementitious matter gross mass, remaining is industry NaCl.
Digging gangue is crushed and is sized to 5mm hereinafter, sieving to furnace bottom ash, its partial size is made to be less than 2.5mm.By coal
Spoil is uniformly mixed with furnace bottom ash according to mass ratio 1:1, and gangue and furnace bottom ash mixture is made, supplies filling with the mixture
Material.
By the mixture and dry discharge fly ash, water-granulated slag, Portland clinker, sulphur aluminium of broken driving cash and furnace bottom ash
The mixture of acid salt cement clinker and desulfurized gypsum is uniformly mixed again, and the mixing water of industry NaCl and triethanolamine are added later
Solution, being sufficiently stirred, which is uniformly mixed it, obtains early-strength low cost filler.
The step of according to embodiment 10, embodiment 11 and embodiment 12, the early-strength low cost filler made are right
Its performance has carried out dependence test, and measurement sample maximum particle diameter is less than 5mm and therefore, collapses closer to the granularity of mortar mixture
Degree of falling test is measured using the CA mortar divergence analyzer of 50 × 150 × 100mm, and bleeding rate measurement mainly uses 185
The bleeding rate of × 200mm measures bucket, and uniaxial compressive strength is surveyed using TYE3000 cement mortar anti-folding and anti-pressing strength-testing machine
Fixed, test result is as shown in table 17:
17 embodiment 10-12 test result of table
Above embodiments show coal mine early-strength low cost filler disclosed by the invention, have stronger implementable
Property.
Claims (4)
1. a kind of coal mine early-strength low cost filler, it is characterised in that: the filler by water, cementitious matter, exciting agent,
The mixture composition of auxiliary spark excitation agent and driving cash and furnace bottom ash；Wherein water accounts for the 21% ~ 23% of filler gross mass, cementitious matter
The 15.2% ~ 19.5% of filler gross mass is accounted for, exciting agent accounts for the 0.5% ~ 0.9% of cementitious matter gross mass, and auxiliary spark excitation agent accounts for glue
The 2.5% of ramming material gross mass, surplus are the mixture for tunneling cash and furnace bottom ash；
The cementitious matter is made of dry discharge fly ash, water-granulated slag and Portland clinker, wherein dry discharge fly ash: water quenching
Slag: the mass ratio of Portland clinker is 2:1:1；The dry discharge fly ash is I grade of flyash or II grade of flyash；
The exciting agent is mixed by industrial NaCl and triethanolamine, and wherein the quality of triethanolamine accounts for cementitious matter gross mass
0.03%, remaining is industry NaCl；The content of NaCl is not less than 95% in the industry NaCl；
The auxiliary spark excitation agent is made of sulphoaluminate cement clinker and desulfurized gypsum, wherein sulphoaluminate cement clinker: desulfurization
The mass ratio of gypsum is 1:1；CaSO in the desulfurized gypsum4•2H2The mass fraction of O is not less than 93%, sulfate cement chamotte powder
Specific surface area after mill is not less than 360m2/ kg, specific surface area is not less than 320m after desulfurized gypsum grinding2/kg。
2. coal mine early-strength low cost filler according to claim 1, it is characterised in that: the driving cash and furnace bottom
In the mixture of ash, cash: the mass ratio of furnace bottom ash are as follows: 1:1 ~ 3:1 is tunneled；Wherein driving cash is sandstone gangue or limestone bastard coal
Stone, SiO in sandstone gangue2Mass fraction be 75% ~ 85%, CaO mass fraction be 5% ~ 10%, SiO in limestone gangue2
Mass fraction be 15% ~ 23%, CaO mass fraction be 55% ~ 63%, maximum particle diameter is no more than 5mm after driving cash is broken；Furnace bottom
Ash is the lime-ash of boiler bottom discharge, SiO in furnace bottom ash2Mass fraction be 42% ~ 55%, Al2O3Mass fraction be 22% ~
30%, Fe2O3Mass fraction be 8% ~ 13%, CaO mass fraction be 4% ~ 6%, after screening maximum particle diameter be no more than 2.5mm.
3. the preparation method of coal mine early-strength low cost filler of any of claims 1 or 2, which is characterized in that prepare step
It is rapid as follows:
(1) be crushed and sieve driving cash, sieve furnace bottom ash, by after screening driving cash and furnace bottom ash be uniformly mixed, complete driving
The preparation of the mixture of cash and furnace bottom ash；
(2) by sulphoaluminate cement clinker, desulfurized gypsum, Portland clinker, dry discharge fly ash and water-granulated slag, respectively
It is put into ball mill, carries out grinding processing；
(3) dry discharge fly ash, water-granulated slag, the Portland clinker after grinding are uniformly mixed, complete the preparation of cementitious matter；
By after grinding sulphoaluminate cement clinker and desulfurized gypsum be uniformly mixed, complete auxiliary spark excitation agent preparation then will be cementing
It is stand-by after material and auxiliary spark excitation agent mixing；
(4) industrial NaCl is dissolved in the water simultaneously with triethanolamine, it is made sufficiently to dissolve and mix, complete matching for exciting agent
System；
(5) mixture that will tunnel cash and furnace bottom ash, is uniformly mixed, then again with mixed cementitious matter and auxiliary spark excitation agent
Exciting agent aqueous solution is added, is sufficiently stirred, is uniformly mixed it, can be prepared by coal mine early-strength low cost filler.
4. the preparation method of coal mine early-strength low cost filler according to claim 3, it is characterised in that: the step
Suddenly in (2), it is 360 m that sulphoaluminate cement clinker grinding, which is handled to powder specific-surface area detection,2/kg~400 m2/kg；Portland cement
It is 360 m that chamotte powder, which is milled to powder specific-surface area detection,2/kg~400 m2/kg；Dry discharge fly ash grinding to powder specific-surface area detection is
400m2/kg~450 m2/kg；Water-granulated slag grinding to powder specific-surface area detection is 350m2/kg~410 m2/kg；Desulfurized gypsum grinding
It is 320m to powder specific-surface area detection2/kg~360 m2/kg。
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| CN110330303B (en) * | 2019-07-31 | 2022-03-29 | 河北充填采矿技术有限公司 | Filling material and using method thereof |
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