CN108218259A - Using electrolytic manganese residues the method for concrete and concrete prepared therefrom are prepared as retarder - Google Patents
Using electrolytic manganese residues the method for concrete and concrete prepared therefrom are prepared as retarder Download PDFInfo
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- CN108218259A CN108218259A CN201810051193.1A CN201810051193A CN108218259A CN 108218259 A CN108218259 A CN 108218259A CN 201810051193 A CN201810051193 A CN 201810051193A CN 108218259 A CN108218259 A CN 108218259A
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- concrete
- manganese
- mixture
- slag
- retarder
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000004567 concrete Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 46
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 89
- 239000011572 manganese Substances 0.000 claims abstract description 89
- 239000002893 slag Substances 0.000 claims abstract description 79
- 239000002002 slurry Substances 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 58
- 239000004568 cement Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 239000003607 modifier Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 11
- 229920001732 Lignosulfonate Polymers 0.000 claims description 4
- 150000007942 carboxylates Chemical class 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 36
- 229910021529 ammonia Inorganic materials 0.000 abstract description 18
- 230000006835 compression Effects 0.000 abstract description 15
- 238000007906 compression Methods 0.000 abstract description 15
- 239000004566 building material Substances 0.000 abstract description 3
- 238000001354 calcination Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 16
- 150000003839 salts Chemical class 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- KQFUCKFHODLIAZ-UHFFFAOYSA-N manganese Chemical compound [Mn].[Mn] KQFUCKFHODLIAZ-UHFFFAOYSA-N 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The present invention relates to building material field, and more particularly to the method for concrete and concrete prepared therefrom are prepared as retarder using electrolytic manganese residues；This method includes manganese slag manganese slurry body is made, and adds burnt slag powders in manganese slurry body, obtains the first mixture；Basic modifier is added in the first mixture, obtains the second mixture；Second mixture is dried, then adds cement slurry, is calcined, obtains the first calcined material；Water-reducing agent and clinker are added in the first calcined material, is calcined；Concrete prepared by this method contains less ammonia, reduces the generation of scum phenomenon；And the concrete has higher compression strength and flexural strength etc..
Description
Technical field
The present invention relates to building material field, and the method for more particularly to preparing concrete as retarder using electrolytic manganese residues
And concrete prepared therefrom.
Background technology
The characteristics of concrete has abundant raw material, cheap, simple production process, thus make its dosage increasing.
Concrete also has the features such as compression strength is high, and durability is good, and strength grade range is wide simultaneously.These features make its use scope
It is very extensive, it is not only used in various civil engineerings, is exactly shipbuilding industry, mechanical industry, the exploitation of ocean, geothermal engineering etc.,
Concrete is also important material.
With the promotion of concrete material and technology, more and more materials are used for concrete.China's high yield manganese, manganese metal
It is by made from electrolyzing manganese sulfate solution；A large amount of filter-press residues i.e. electrolytic manganese residues can be generated in production process.This waste residue mesh
Before lack effective and sustainable interests approach, generally land-fill method is taken to be handled, but its accumulating amount increasingly increases, no
The only development of appropriation of land, contaminated soil, restriction enterprise, and the pollution of lithic drainage can be caused.
At present, manganese slag is gradually used in the production of construction material, still, in the existing method using manganese slag
There are still some problems to need to be improved.The building materials prepared in the prior art with manganese slag, it is still desirable to further improve material
Resistance to compression, it is anti-folding etc. abilities, and need improve material scum the problems such as.
Invention content
The purpose of the present invention is to provide a kind of method for preparing concrete as retarder using electrolytic manganese residues, the preparation sides
Method advantageously reduces the content of the ammonia in manganese slag；The preparation method of concrete of the present invention can also improve the strong of concrete obtained
The problem of degree, improvement concrete scum, promotes the multiple performance of the concrete of preparation.
Another object of the present invention is to provide a kind of concrete, the total content of ammonia is few in the concrete, improves concrete
Scum problem；And the concrete has higher compression strength and flexural strength etc..
What the present invention adopts the following technical solutions to realize.
The present invention proposes a kind of method for preparing concrete as retarder using electrolytic manganese residues, including manganese slag is made manganese
Slurry body adds burnt slag powders in manganese slurry body, obtains the first mixture；Alkalinity is added in the first mixture to change
Property agent, obtains the second mixture；Second mixture is dried, then adds cement slurry, is calcined, obtains the first calcined material；
Water-reducing agent and clinker are added in the first calcined material, is calcined.
The present invention proposes a kind of concrete, is by the above-mentioned method for preparing concrete as retarder using electrolytic manganese residues
It prepares.
The embodiment of the present invention prepares the method for concrete and concrete prepared therefrom using electrolytic manganese residues as retarder
Advantageous effect be：
Manganese slurry body is first prepared in the method for preparing concrete as retarder using electrolytic manganese residues of the present invention, in manganese slag
The part ammonia contained can be dissolved in the water of slurry, and then reduces the residual quantity of ammonia in manganese slag；The present invention is in the second mixture
Middle first addition cement slurry is calcined, and on the one hand can be increased the volatilization of remaining ammonia in manganese slag, on the other hand can forged
Cement slurry is made to be changed into clinker during burning, and compression strength and flexural strength for improving mixture entirety etc.,
It also is able to improve the binding ability of salts substances in mixture so that salts substances are not easy to be precipitated；To once being forged excessively
Water-reducing agent is added in the mixture of burning and clinker is calcined again, in addition to can further promote remaining ammonia volatilization, is subtracted
The content of ammonia in few concrete, additionally it is possible to it further reduces the free water in concrete and combines the content of water, and into
The compression strength and flexural strength of concrete are improved to one step, improves the binding ability of salts substances in concrete, reduces salt
The eduction rate of substance.
The total content of ammonia is few in the concrete of the present invention, and can reduce the generation of scum phenomenon；And the concrete has
There are higher compression strength and flexural strength etc..
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
As retarder prepared by the method for concrete and prepared therefrom using electrolytic manganese residues to the embodiment of the present invention below
Concrete is specifically described.
The present invention using electrolytic manganese residues in the method that retarder prepares concrete, the raw material that uses includes manganese slag, ore deposit
Ground-slag, basic modifier, cement slurry, water-reducing agent and clinker.
The method of the present invention includes manganese slag is made manganese slurry body, burnt slag powders are added in manganese slurry body, are obtained
To the first mixture.
The preparation method of above-mentioned manganese slurry body can include：Manganese slag is made an addition in water, is stirred, the rotating speed of stirring is
500-1000r/min, and preferably, manganese slag can be made an addition in the water that water temperature is 90-120 DEG C, and in the process of stirring
The temperature of the mixture of middle holding manganese slag and water is 90-120 DEG C.Further, the time of above-mentioned stirring can be 3-5h.By manganese
Slag, which makes an addition to, can make remaining ammonia volatilization in manganese slag after stirring in hot water, and then reduce remaining ammonia amount in manganese slag；It needs
It is bright, manganese slurry body is prepared at hotter temperature and also helps subsequent manganese slag modification.Manganese slag in the present invention is powder
Shape, grain size can be 200-300 mesh.
Burnt slag powders are added in the manganese slurry body prepared according to the method described above, i.e. available first is mixed after stirring
Close object.In detail, burnt slag powders can be made an addition into manganese slurry body when the temperature of manganese slurry body is not less than 75 DEG C
In, and stir.
Preferably, the weight ratio of manganese slag and burnt slag powders is 10-20:1；Further, slag powders are calcined
Temperature is 350-450 DEG C, and the time of calcining is 1-2h, and the particle size of slag powders is 200-300 mesh.
Basic modifier is added in the first mixture, after stirring evenly, the second mixture can be obtained.In detail, exist
When basic modifier is made an addition in the first mixture, the temperature of the first mixture may remain in 50-60 DEG C；Preferably,
The weight of basic modifier is the 10-12.5% of manganese slag weight.Basic modifier in the present invention can be CaO or MgO.
After above-mentioned second mixture is dried, then cement slurry is added, calcined, you can obtain the first calcined material.In detail
Carefully, the second mixture is stood, treats its sedimentation, then the water on upper strata is removed, then the mixture of lower floor is dried.Second mixing
The temperature of object drying can be 100-120 DEG C.
Further, the weight ratio of manganese slag and cement slurry can be 25-50:1, and in the second mixture after the drying
The temperature that addition cement slurry is calcined can be 500-600 DEG C, and the time of calcining can be 2-3h.
Water-reducing agent and clinker are added in the first calcined material, after mixing, is calcined again.In detail, the cement of addition
The weight ratio of clinker and cement slurry is 5-10:1；And first the temperature calcined of calcined material addition clinker can be
400-500 DEG C, the time of calcining can be 1-2h.
It should be noted that above-mentioned water-reducing agent can be at least one in carboxylate, lignosulfonates and sodium hydroxide
Kind.
Prepared by the method for concrete and by its system as retarder using electrolytic manganese residues to the present invention with reference to embodiments
Standby concrete is described in further detail.
Embodiment 1
Manganese slag is made an addition in water at a temperature of 90 °C, and the temperature of mixture of the holding containing manganese slag is 90 DEG C, turned
Manganese slurry body is made to stir 5h under conditions of 1000r/min in speed.
Burnt slag powders (200 mesh) are added in manganese slurry body, is uniformly mixed, obtains the first mixture.Manganese slag with
The weight ratio of slag powders is 10:1, and when slag powders are made an addition in manganese slurry body, the temperature of manganese slurry body is 75 DEG C.Slag powders
Method for calcinating be：It is 350 DEG C in temperature, calcines 2h.
When the temperature of the first mixture is 60 DEG C, basic modifier CaO is in the first mixture for addition, is uniformly mixed,
Obtain the second mixture.The weight of basic modifier is the 10% of manganese slag weight.
Second mixture is stood, after its sedimentation, the water on upper strata is removed, is as temperature by the sediment called in the following text
It is dried under the conditions of 120 DEG C, after to be dried, addition cement slurry is calcined, the temperature of calcining in drying object after mixing
It is 500 DEG C, calcines 3h, you can obtain the first calcined material.The weight ratio of cement slurry and manganese slag is 1:25.
Water-reducing agent and clinker are added in the first calcined material, is uniformly mixed, under the conditions of temperature is 400 DEG C, calcining
2h, you can obtain concrete.Water-reducing agent is carboxylate, and the weight ratio of clinker and cement slurry is 5:1, the weight of water-reducing agent
It can be the 2% of clinker weight.
Embodiment 2
Manganese slag (250 mesh) is made an addition in the water that temperature is 120 DEG C, and the temperature of mixture of the holding containing manganese slag is
120 DEG C, 3h is stirred under conditions of rotating speed is 500r/min, manganese slurry body is made.
Burnt slag powders (300 mesh) are added in manganese slurry body, is uniformly mixed, obtains the first mixture.Manganese slag with
The weight ratio of slag powders is 20:1, and when slag powders are made an addition in manganese slurry body, the temperature of manganese slurry body is 80 DEG C.Slag powders
Method for calcinating be：It is 450 DEG C in temperature, calcines 1h.
When the temperature of the first mixture is 50 DEG C, basic modifier MgO is in the first mixture for addition, is uniformly mixed,
Obtain the second mixture.The weight of basic modifier is the 12.5% of manganese slag weight.
Second mixture is stood, after its sedimentation, the water on upper strata is removed, is as temperature by the sediment called in the following text
It is dried under the conditions of 100 DEG C, after to be dried, addition cement slurry is calcined, the temperature of calcining in drying object after mixing
It is 600 DEG C, calcines 2h, you can obtain the first calcined material.The weight ratio of cement slurry and manganese slag is 1:50.
Water-reducing agent and clinker are added in the first calcined material, is uniformly mixed, under the conditions of temperature is 500 DEG C, calcining
1h, you can obtain concrete.Water-reducing agent is the mixture of carboxylate, lignosulfonates and sodium hydroxide, clinker and water
The weight ratio of mud raw material is 10:1, the weight of water-reducing agent can be the 2.5% of clinker weight.
Embodiment 3
Manganese slag (300 mesh) is made an addition in the water that temperature is 100 DEG C, and the temperature of mixture of the holding containing manganese slag is
105 DEG C, 4h is stirred under conditions of rotating speed is 800r/min, manganese slurry body is made.
Burnt slag powders (250 mesh) are added in manganese slurry body, is uniformly mixed, obtains the first mixture.Manganese slag with
The weight ratio of slag powders is 15:1, and when slag powders are made an addition in manganese slurry body, the temperature of manganese slurry body is 78 DEG C.Slag powders
Method for calcinating be：It is 400 DEG C in temperature, calcines 1.5h.
When the temperature of the first mixture is 55 DEG C, basic modifier CaO is in the first mixture for addition, is uniformly mixed,
Obtain the second mixture.The weight of basic modifier is the 11% of manganese slag weight.
Second mixture is stood, after its sedimentation, the water on upper strata is removed, is as temperature by the sediment called in the following text
It is dried under the conditions of 110 DEG C, after to be dried, addition cement slurry is calcined, the temperature of calcining in drying object after mixing
It is 550 DEG C, calcines 2.5h, you can obtain the first calcined material.The weight ratio of cement slurry and manganese slag is 1:35.
Water-reducing agent and clinker are added in the first calcined material, is uniformly mixed, under the conditions of temperature is 440 DEG C, calcining
1.5h, you can obtain concrete.Water-reducing agent is sodium hydroxide, and the weight ratio of clinker and cement slurry is 7:1, water-reducing agent
Weight can be the 1.8% of clinker weight.
Embodiment 4
Manganese slag (200 mesh) is made an addition in the water that temperature is 95 DEG C, and the temperature of mixture of the holding containing manganese slag is 110
DEG C, 4.5h is stirred under conditions of rotating speed is 600r/min, manganese slurry body is made.
Burnt slag powders (200 mesh) are added in manganese slurry body, is uniformly mixed, obtains the first mixture.Manganese slag with
The weight ratio of slag powders is 17:1, and when slag powders are made an addition in manganese slurry body, the temperature of manganese slurry body is 85 DEG C.Slag powders
Method for calcinating be：It is 370 DEG C in temperature, calcines 2h.
When the temperature of the first mixture is 53 DEG C, basic modifier CaO is in the first mixture for addition, is uniformly mixed,
Obtain the second mixture.The weight of basic modifier is the 10.5% of manganese slag weight.
Second mixture is stood, after its sedimentation, the water on upper strata is removed, is as temperature by the sediment called in the following text
It is dried under the conditions of 105 DEG C, after to be dried, addition cement slurry is calcined, the temperature of calcining in drying object after mixing
It is 520 DEG C, calcines 2.4h, you can obtain the first calcined material.The weight ratio of cement slurry and manganese slag is 1:45.
Water-reducing agent and clinker are added in the first calcined material, is uniformly mixed, under the conditions of temperature is 470 DEG C, calcining
1.6h, you can obtain concrete.Water-reducing agent is the mixture of lignosulfonates and sodium hydroxide, clinker and cement slurry
Weight ratio be 9:1, the weight of water-reducing agent can be the 3% of clinker weight.
Comparative example 1
Comparative example 1 is similar with the method for preparing concrete of embodiment 1, the difference lies in, in comparative example 1 not by manganese
Manganese slurry body is made in slag, but slag powders, basic modifier, cement slurry are added in manganese ground-slag end and is calcined, Ran Hou
Addition clinker is calcined again, and other parameters, method are carried out with reference to embodiment 1, and details are not described herein.
Comparative example 2
Comparative example 2 is similar with the preparation method of embodiment 1, and the difference lies in prepare the side of manganese slurry body in comparative example 2
Method is to make an addition to manganese slag in the water that temperature is 24 DEG C, and after stirring, other parametric techniques are carried out with reference to embodiment 1,
This is repeated no more.
Comparative example 3
Comparative example 3 is similar with the preparation method of embodiment 1, and the difference lies in directly in the second mixture in comparative example 3
Middle addition clinker is once calcined, you can.The parameters such as other raw material usages reference embodiment 1, herein no longer
It repeats.
Concrete test block is made with the molding method of machine pressure system in the embodiment 1-4 and comparative example 1-3 concrete prepared,
Carry out compression strength, flexural strength and NH3The inspection of burst size.Detection method respectively refers to GB/T 50081-2001《It is common mixed
Solidifying soil mechanics method for testing performance standard》And GB/T18588-2001《The limitation of the ammonia discharged in concrete admixture》Into
Row.It the results are shown in Table 1.
The NH of 1 each group concrete of table3Burst size (%) and the compression strength (MPa) of concrete and tensile strength (MPa)
As shown in Table 1, the NH of concrete prepared by preparation method of the invention3Burst size is substantially reduced；There is 1 He of comparative example
2 compared with embodiment 1-4 it is found that prepare manganese slurry body with the higher water of temperature in the present invention, can significantly reduce made of
NH3The burst size of concrete.
The resistance to compression of concrete prepared by the preparation method of the present invention is slight and flexural strength is above comparative example 1-3；By right
Ratio 1 and 2 compared with embodiment 1-4 it is found that after preparing manganese slurry body with the higher water of temperature in the present invention, the coagulation prepared
The compression strength and flexural strength of soil are more preferably；Compared by comparative example 3 and embodiment 1-4 it is found that dividing in the preparation method of the present invention
Not Tian Jia cement slurry and clinker calcined, the compression strength and flexural strength of concrete can be significantly improved.
It is equal that with the molding method of machine pressure system length is made in concrete prepared by embodiment 1-4 and comparative example 1-3
For the concrete test block of 10cm, each concrete test block is placed in the baking oven that humidity is 40%, temperature is 30 DEG C, toasted respectively
For 24 hours, 48h and 72h, and after each period toasts, measure the area of each concrete test block surface scum and each test block
The ratio of total surface area, the results are shown in Table 2.
There is the area ratio (%) of scum phenomenon in 2 each test block different tests period of table
As shown in Table 2, preparation method of the invention preparation can reduce the scum phenomenon of concrete, i.e., of the invention
The concrete for preparing of method there is more preferably wearability, frost resistance and impermeability etc..By embodiment 1-4's and comparative example 1-2
Comparing result can improve concrete it is found that prepare the method for manganese slurry body in the preparation method of the present invention to a certain extent
Scum phenomenon；By embodiment 1-4 and the comparing result of comparative example 3 it is found that the present invention preparation method in method for calcinating, energy
The scum phenomenon of concrete is enough greatly lowered.
In conclusion the embodiment of the present invention prepares the method for concrete and by its preparation using electrolytic manganese residues as retarder
The advantageous effect of concrete be：
Manganese slurry body is first prepared in the method for preparing concrete as retarder using electrolytic manganese residues of the present invention, in manganese slag
The part ammonia contained can be dissolved in the water of slurry, and then reduces the residual quantity of ammonia in manganese slag；The present invention is in the second mixture
Middle first addition cement slurry is calcined, and on the one hand can be increased the volatilization of remaining ammonia in manganese slag, on the other hand can forged
Cement slurry is made to be changed into clinker during burning, and compression strength and flexural strength for improving mixture entirety etc.,
It also is able to improve the binding ability of salts substances in mixture so that salts substances are not easy to be precipitated；To once being forged excessively
Water-reducing agent is added in the mixture of burning and clinker is calcined again, in addition to can further promote remaining ammonia volatilization, is subtracted
The content of ammonia in few concrete, additionally it is possible to it further reduces the free water in concrete and combines the content of water, and into
The compression strength and flexural strength of concrete are improved to one step, improves the binding ability of salts substances in concrete, reduces salt
The eduction rate of substance.
The total content of ammonia is few in the concrete of the present invention, and can reduce the generation of scum phenomenon；And the concrete has
There are higher compression strength and flexural strength etc..
Embodiments described above is part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
- A kind of 1. method for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that including manganese slag is made manganese slag Slurry adds burnt slag powders in manganese slurry body, obtains the first mixture；Basic modifier is added in first mixture, obtains the second mixture；Second mixture is dried, then adds cement slurry, is calcined, obtains the first calcined material；Water-reducing agent and clinker are added in first calcined material, is calcined.
- 2. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described The preparation method of manganese slurry body includes：Manganese slag is made an addition in water and is stirred, the rotating speed of the stirring is 500-1000r/ Min, and the temperature of the water is 90-120 DEG C, and keep during the stirring is carried out the mixed of the manganese slag and the water The temperature for closing object is 90-120 DEG C.
- 3. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described The weight ratio of manganese slag and the slag powders is 10-20:1.
- 4. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described The weight of basic modifier is the 10%-12.5% of the manganese slag weight.
- 5. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described The weight ratio of manganese slag and the cement slurry is 25-50:1.
- 6. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described The weight ratio of cement slurry and the clinker is 1:5-10.
- 7. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that in institute It is 500-600 DEG C to state and the temperature that the cement slurry is calcined is added in the second mixture.
- 8. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that in institute It is 400-500 DEG C to state and the temperature that the water-reducing agent and the clinker are calcined is added in the first calcined material.
- 9. the method according to claim 1 for preparing concrete as retarder using electrolytic manganese residues, which is characterized in that described Water-reducing agent includes at least one of carboxylate, lignosulfonates and sodium hydroxide.
- 10. a kind of concrete, which is characterized in that it is to make slow setting using electrolytic manganese residues by claim 1-9 any one of them Prepared by the method that agent prepares concrete.
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| CN111592260A (en) * | 2020-05-08 | 2020-08-28 | 北京科技大学 | Additive for removing ammonia nitrogen in electrolytic manganese slag and removing method thereof |
| CN114850194A (en) * | 2022-04-28 | 2022-08-05 | 重庆重交再生资源开发股份有限公司 | Treatment method of electrolytic manganese slag |
| CN116375383A (en) * | 2022-12-27 | 2023-07-04 | 贵州大学 | Cement admixture prepared from electrolytic manganese slag and preparation method thereof |
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| CN116375383A (en) * | 2022-12-27 | 2023-07-04 | 贵州大学 | Cement admixture prepared from electrolytic manganese slag and preparation method thereof |
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