CN106892622A - A kind of large dosage iron tailing concrete and preparation method thereof - Google Patents
A kind of large dosage iron tailing concrete and preparation method thereof Download PDFInfo
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- CN106892622A CN106892622A CN201710197206.1A CN201710197206A CN106892622A CN 106892622 A CN106892622 A CN 106892622A CN 201710197206 A CN201710197206 A CN 201710197206A CN 106892622 A CN106892622 A CN 106892622A
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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
- C04B28/04—Portland 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Each component consumption is as follows in every cubic metre of concrete in a kind of large dosage iron tailing concrete and preparation method thereof, wherein large dosage iron tailing concrete：Cement：395.1kg~431.0kg；Iron tailings powder：301.7kg~309.7kg；Iron tailings sand：908.5kg~991.3kg；Silicon ash：98.8kg~107.8kg；Flyash：248.9kg~271.5kg；Water reducer：11.1kg~12.2kg；Water：245.1kg~267.3kg；The quality of the iron tailings powder and iron tailings sand and account for the 53%~57% of component gross mass used.The present invention solves the current tailing heap storage of China greatly, and value is low, the technical problem of influence city and surrounding enviroment.
Description
Technical field
The present invention relates to technical field of concrete production, more particularly to a kind of large dosage iron tailing concrete and its preparation side
Method.
Background technology
In the more province of China, such as Tangshan, Zhangjiakou region, storing abundant resource of tailings cannot be effective
Utilize, the huge accumulation of mine tailing causes to have a strong impact on to the environment of surrounding.Tailings impoundment needs to take a large amount of soils, by 2013
Year, China's mine tailing stacks land occupation up to more than 2,300 ten thousand mu, as new Tailings Dam is continuously increased, will take more soil
Ground；But, mine tailing is the resource for having misplaced place, because China's mining industry starting is late, technology disparate development, different times
Selecting and smelting technology is had a long way to go, and a large amount of valuable resources are retained among mine tailing, cause resource huge waste；In addition, contained by mine tailing
Heavy metal ion, or even the polluter such as arsenic, mercury, with tailing water can flow into river nearby or permeate the ground, severe contamination river
And underground water source, the tailings after drying up naturally, meet strong wind and form airborne dust, surrounding area is blown to, environment is caused harm；Many tails
Ore deposit storehouse exceeds the time limit to use, or even violation operation, Tailings Dam is there is very big potential safety hazard, and surrounding area people's property and life are pacified
Complete to cause serious threat, since the establishment of the nation, repeatedly there is Tailings Dam dam-break accident in China, cause a tremendous loss of lives, etc., tail
The huge accumulation harm of ore deposit is serious, it would be highly desirable to which we find out method and solve this problem.
Therefore, mine tailing has so many adverse effect, how to make full use of these discarded objects, it is produced as high added value
Product turn into the current a great problem that we face, just happening China and environmental problem paid attention to all the more, using these discarded objects,
It is also beneficial to change " garbage-surrounded city ", situations such as dust is boundless, improves city and surrounding area air quality.
The content of the invention
It is an object of the invention to provide a kind of large dosage iron tailing concrete and preparation method thereof, it is used to solve China's mesh
Preceding tailing heap storage is big, and value is low, the technical problem of influence city and surrounding enviroment.
Technical solution of the present invention is as follows.
A kind of large dosage iron tailing concrete, each component consumption is as follows in every cubic metre of concrete：
Cement：395.1kg~431.0kg；
Iron tailings powder：301.7kg~309.7kg；
Iron tailings sand：908.5kg~991.3kg；
Silicon ash：98.8kg~107.8kg；
Flyash：248.9kg~271.5kg；
Water reducer：11.1kg~12.2kg；
Water：245.1kg~267.3kg；
The quality of the iron tailings powder and iron tailings sand and account for the 53%~57% of component gross mass used.
Preferably, the water reducer volume is the 1.5% of Binder Materials weight, and water-cement ratio is 0.33；Wherein Binder Materials
It is the mixture of cement, silicon ash and flyash, the ratio of each component is cement, silicon ash and flyash=1:0.25:0.63.
Preferably, the cement is the portland cement of Portland cement or strength grade more than or equal to 42.5；
The silicon ash is silicon ash of the dioxide-containing silica more than or equal to 90%；The flyash is I grade of flyash.
Preferably, the particle diameter of the iron tailings powder is less than or equal to 0.3mm.
Preferably, the iron tailings sand grains footpath is 0.08mm~2.5mm.
Preferably, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being obtained after sieving.
Preferably, the water reducer is polycarboxylic acid series high efficiency water reducing agent or naphthalene series high-efficiency water-reducing agent.
A kind of preparation method of large dosage iron tailing concrete, including step is as follows.
Step one, material is weighed by iron tailings sand, iron tailings powder, cement, silicon ash and flyash by the proportioning, is poured into and is stirred
Stirring in machine is mixed, it is stirred.
Step 2, load weighted water reducer is mixed with water, is stirred.
Step 3, the mixed liquor that will be made in step 2 is added in mixer at twice, and 1min~2min is stirred every time；The
It is quiet to stop 30s after secondary addition mixed liquor stirs the above-mentioned time, stirring is further continued for, until slurry stirs, the iron tailings is mixed
Solidifying soil completes.
Preferably, the mixing time in step one is 1min~2min.
Preferably, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being obtained after sieving, no
It is levigate by machine again；The particle diameter of iron tailings powder is less than or equal to 0.3mm, and iron tailings sand grains footpath is 0.08mm~2.5mm.
Compared with prior art the invention has the characteristics that and beneficial effect.
1st, present invention iron tailings replaces conventional nature sandstone completely, is conserved sand and stone resources, preserves the ecological environment, and becomes
Waste be changed into values, improves added value of product, prepares a kind of high intensity iron tailing concrete of new green environment protection.
2nd, iron tailings sand and iron tailings powder are added simultaneously in the present invention, on the one hand by the trade waste iron of different-grain diameter
Mine tailing is used, and increased usage amount, improves iron tailings utilization rate；On the other hand, iron tailings powder particle diameter is less than iron tailings
Sand, can play filling effect, improve iron tailing concrete packing, improve concrete durability.
3rd, iron tailings consumption accounts for the total amount of each composition and is up to 57% in the present invention, and this kind of large dosage iron tailing concrete is matched somebody with somebody
Composition and division in a proportion, on the premise of concrete high-strength degree is ensured, largely improves the volume of iron tailings, while reducing high cost
Silicon ash usage amount and cement consumption；Therefore, the concrete under this proportioning, not only folk prescription cost is relatively minimum, but also pole
Big degree has used iron tailings, is conducive to twice laid, solves mine tailing and piles up the variety of problems brought.
4th, the present invention uses ternary gelling system, i.e. Binder Materials for cement, silicon ash and flyash, silicon ash particle diameter compared with
Cement is thinner, and silicon ash occurs hydration reaction during mix, generates gel of calcium silicate, and the cohesion such as iron tailings is integrated, and
And the volcano ash effect reaction of silicon ash is violent, has decisive role for improving concrete strength；Silicon ash particle diameter is thinner simultaneously, more
Space between good filling iron tailings, improves concrete density, is conducive to improving the durability and impermeability of concrete.
5th, silicon ash is cost highest in all raw material in the present invention, but has decisive work for concrete strength
With, its consumption is too low to cause drastically reducing for concrete strength, and consumption is higher and can quickly increase Cost of Concrete, so that by
Silicon ash consumption from the aspect of concrete strength and cost two；In the present invention, the silicon ash using dioxide-containing silica more than 90%,
Replace part silicon ash and cement consumption using the flyash for accounting for binder total amount 34% simultaneously, and to ternary gelling system
Middle to add appropriate iron tailings, this several raw material interacts during the mix of concrete, not only ensures strong concrete
Degree and durability are unaffected, and reduce the consumption of silicon ash and cement and also reduce greenhouse gas emissions, reach
Reduce production cost, innoxious, resource production purpose.
6th, the iron tailings sand and iron tailings powder in the present invention are the discarded object of mining site discharge, by being obtained after sieving, directly
Connect and use, it is no longer levigate by machine, reduce secondary energy sources consumption.
7th, large dosage iron tailing concrete of the present invention, largely consumes discarded object iron tailings, is just flourishing China
The building trade of development provides a kind of environmental protection, the green concrete of energy-conservation, meets infrastructure construction, urbanization and shanty town
The need for improvement project, with significant economic benefit and environmental benefit.
8th, integrated application of the iron tailings in construction material can realize the minimizing of iron tailings, innoxious, resource, be ore deposit
The effective way of mountain industry energy conservation emission reduction, realizes the secondary utilization of resource, meets the state basic policy of sustainable development, recycling economy, profit
Preparing new building materials with mine tailing has good economic benefit and social benefit.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is large dosage iron tailing concrete preparation flow figure.
Specific embodiment
The present invention is big in order to solve the current tailing heap storage of China, and value is low, influences city and surrounding enviroment problem,
The large dosage iron tailing concrete technology of new green environment protection is prepared there is provided a kind of utilization iron tailings.Material therefor is：Commonly
Silicate PO42.5 cement, I grade of flyash, polycarboxylic acid series high efficiency water reducing agent, iron tailings sand is Zhangjiakou with iron tailings powder
The discarded object of certain mining site discharge, directly uses by after simple sieving, no longer levigate by machine, reduces secondary energy sources consumption.
Iron tailings sand grains footpath is about 0.08~2.5mm, and iron tailings powder particle diameter is not more than 0.3mm.
Embodiment 1
The concrete constituent and proportioning be, cement：Silicon ash：Flyash：Iron tailings powder：Iron tailings sand=1:
0.25:0.63:0.78:2.51, water reducer volume is the 1.5% of Binder Materials (cement, silicon ash and flyash) weight, water-cement ratio
It is 0.33.
This large dosage iron tailing concrete, each component consumption is as follows in every cubic metre of concrete.
Cement：395.1kg；
Iron tailings powder：309.7kg；
Iron tailings sand：991.3kg；
Silicon ash：98.8kg；
Flyash：248.9kg；
Water reducer：11.1kg；
Water：245.1kg；
The quality of the iron tailings powder and iron tailings sand and account for the 56.6% of component gross mass used.
In the present embodiment, the water reducer volume is the 1.5% of Binder Materials weight, and water-cement ratio is 0.33；Wherein it is gelled
Material is the mixture of cement, silicon ash and flyash, and the ratio of each component is cement, silicon ash and flyash=1:0.25:0.63.
In the present embodiment, the cement is normal silicate PO42.5 cement；The silicon ash is that dioxide-containing silica is big
In the silicon ash equal to 90%；The flyash is I grade of flyash.
Certainly in other embodiments, the portland cement that cement can also be with strength grade more than or equal to 42.5；
In the present embodiment, the particle diameter of the iron tailings powder is less than or equal to 0.3mm.
In the present embodiment, the iron tailings sand grains footpath is 0.08mm~2.5mm.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
；The composition of wherein iron tailings powder and iron tailings sand is as follows.
The chemical composition (%) of iron tailings powder
The chemical composition of iron tailings sand
Main constituents are silica in iron tailings, and it plays an important role for improving the hardness of iron tailings.
In the present embodiment, the water reducer is polycarboxylic acid series high efficiency water reducing agent.
Certainly in other embodiments, water reducer can also use naphthalene series high-efficiency water-reducing agent.
A kind of preparation method of large dosage iron tailing concrete, including step is as follows.
Step one, weighs material, per institute of side by iron tailings sand, iron tailings powder, cement, silicon ash and flyash by the proportioning
Stating large dosage iron tailing concrete each component consumption is：Iron tailings powder：309.7kg, iron tailings sand：991.3kg, cement：
395.1kg, silicon ash：98.8kg, flyash：248.9kg, load weighted material is poured into forced mixer in order, is stirred
Mix about 1~2 minute, it is stirred.
Step 2, load weighted water reducer 11.1kg is well mixed with water 245.1kg, at twice in addition mixer,
Each stir about 1~2 minute, it is quiet to stop 30s after second adds water reducer to stir the above-mentioned time with the mixed liquor of water, it is further continued for
Stirring, finally until slurry stirs, the large dosage iron tailing concrete completes.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
, it is no longer levigate by machine；The particle diameter of iron tailings powder be less than or equal to 0.3mm, iron tailings sand grains footpath be 0.08mm~
2.5mm。
The large dosage iron tailing concrete for completing will be prepared and made some 100mm × 100mm × 100mm, quality
It is the test cube of 2.3kg, after 90 DEG C of high temperature steam curing 72h, according to《Normal concrete mechanical test method mark
It is accurate》Test determination in GB/T50081-2002, has carried out large dosage iron tailing concrete compression strength and has been tried with tensile splitting strength
Test, result of the test is as shown in the table.
Embodiment 2
In the present embodiment, the concrete constituent and proportioning are cement：Silicon ash：Flyash：Iron tailings powder：Iron tailings
Sand=1:0.25:0.63:0.70:2.11, water reducer volume is the 1.5% of Binder Materials (cement, silicon ash and flyash) weight,
Water-cement ratio is 0.33.
This large dosage iron tailing concrete, each component consumption is as follows in every cubic metre of concrete.
Cement：431.0kg；
Iron tailings powder：301.7kg；
Iron tailings sand：908.5kg；
Silicon ash：107.8kg；
Flyash：271.5kg；
Water reducer：12.2kg；
Water：267.3kg；
The quality of the iron tailings powder and iron tailings sand and account for the 52.6% of component gross mass used.
In the present embodiment, the water reducer volume is the 1.5% of Binder Materials weight, and water-cement ratio is 0.33；Wherein it is gelled
Material is the mixture of cement, silicon ash and flyash, and the ratio of each component is cement, silicon ash and flyash=1:0.25:0.63.
In the present embodiment, the cement is normal silicate PO42.5 cement；The silicon ash is that dioxide-containing silica is big
In the silicon ash equal to 90%；The flyash is I grade of flyash.
Certainly in other embodiments, the portland cement that cement can also be with strength grade more than or equal to 42.5.
In the present embodiment, the particle diameter of the iron tailings powder is less than or equal to 0.3mm.
In the present embodiment, the iron tailings sand grains footpath is 0.08mm~2.5mm.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
；The composition of wherein iron tailings powder and iron tailings sand is as follows.
The chemical composition (%) of iron tailings powder
The chemical composition of iron tailings sand
Main constituents are silica in iron tailings, and it plays an important role for improving the hardness of iron tailings.
In the present embodiment, the water reducer is polycarboxylic acid series high efficiency water reducing agent.
Certainly in other embodiments, water reducer can also use naphthalene series high-efficiency water-reducing agent.
The preparation method of the large dosage iron tailing concrete described in this claim 1, including step is as follows.
Step one, be per side's large dosage iron tailing concrete each component consumption：Iron tailings sand 908.5kg, iron tailings
Powder 301.7kg, cement 431.0kg, silicon ash 107.8 and flyash 271.5kg, forced action type is poured into by load weighted material in order
In mixer, stir about 1~2 minute makes it stir.
Step 2, load weighted water reducer 12.2kg is well mixed with water 267.3kg, at twice in addition mixer,
Each stir about 1~2 minute, it is quiet to stop 30s after second adds water reducer to stir the above-mentioned time with the mixed liquor of water, it is further continued for
Stirring, finally until slurry stirs, the large dosage iron tailing concrete completes.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
, it is no longer levigate by machine；The particle diameter of iron tailings powder be less than or equal to 0.3mm, iron tailings sand grains footpath be 0.08mm~
2.5mm。
The large dosage iron tailing concrete for completing will be prepared and made some 100mm × 100mm × 100mm, quality
It is the test cube of 2.3kg, after 90 DEG C of high temperature steam curing 72h, according to《Normal concrete mechanical test method mark
It is accurate》Test determination in GB/T50081-2002, has carried out large dosage iron tailing concrete compression strength and has been tried with tensile splitting strength
Test, result of the test is as shown in the table.
Embodiment 3
1st, a kind of large dosage iron tailing concrete, it is characterised in that each component consumption is such as in every cubic metre of concrete
Under：
Cement：413.0kg；
Iron tailings powder：305.6kg；
Iron tailings sand：950.0；
Silicon ash：103.3kg；
Flyash：260.2kg；
Water reducer：11.6kg；
Water：256.2kg；
Wherein, the mass ratio of each component is cement：Silicon ash：Flyash：Iron tailings powder：Iron tailings sand=1:0.25:0.63:
0.74:2.3；Water reducer volume is the 1.5% of Binder Materials weight, and water-cement ratio is 0.33；Wherein Binder Materials is cement, silicon ash
With the mixture of flyash.
In the present embodiment, the cement is normal silicate PO42.5 cement；The silicon ash is that dioxide-containing silica is big
In the silicon ash equal to 90%；The flyash is I grade of flyash.
Certainly in other embodiments, the portland cement that cement can also be with strength grade more than or equal to 42.5；
In the present embodiment, the particle diameter of the iron tailings powder is less than or equal to 0.3mm.
In the present embodiment, the iron tailings sand grains footpath is 0.08mm~2.5mm.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
.
In the present embodiment, the water reducer is polycarboxylic acid series high efficiency water reducing agent.
Certainly in other embodiments, water reducer can also use naphthalene series high-efficiency water-reducing agent.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
；The composition of wherein iron tailings powder and iron tailings sand is as follows.
The chemical composition (%) of iron tailings powder
The chemical composition of iron tailings sand
Main constituents are silica in iron tailings, and it plays an important role for improving the hardness of iron tailings.
A kind of preparation method of large dosage iron tailing concrete, including step is as follows.
Step one, be per side's large dosage iron tailing concrete each component consumption：Iron tailings sand 950.0kg, iron tailings
Powder 305.6kg, cement 413.0kg, silicon ash 103.3kg and flyash 260.2kg, pressure is poured into by load weighted material in order
In formula mixer, stir about 1~2 minute makes it stir.
Step 2, load weighted water reducer 11.6kg is well mixed with water 256.2kg, at twice in addition mixer,
Each stir about 1~2 minute, it is quiet to stop 30s after second adds water reducer to stir the above-mentioned time with the mixed liquor of water, it is further continued for
Stirring, finally until slurry stirs, the large dosage iron tailing concrete completes.
In the present embodiment, described iron tailings sand is the discarded object of mining site discharge with iron tailings powder, by being made after sieving
, it is no longer levigate by machine；The particle diameter of iron tailings powder be less than or equal to 0.3mm, iron tailings sand grains footpath be 0.08mm~
2.5mm。
The large dosage iron tailing concrete for completing will be prepared and made some 100mm × 100mm × 100mm cubes
Test block, after 90 DEG C of high temperature steam curing 72h, according to《Standard for test methods of mechanical properties of ordinary concrete》GB/T50081-2002
Middle test determination, has carried out large dosage iron tailing concrete compression strength and has been tested with tensile splitting strength, result of the test such as following table
It is shown.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention covers people in the art
Member according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (10)
1. a kind of large dosage iron tailing concrete, it is characterised in that each component consumption is as follows in every cubic metre of concrete：
Cement：395.1kg~431.0kg；
Iron tailings powder：301.7kg~309.7kg；
Iron tailings sand：908.5kg~991.3kg；
Silicon ash：98.8kg~107.8kg；
Flyash：248.9kg~271.5kg；
Water reducer：11.1kg~12.2kg；
Water：245.1kg~267.3kg；
The quality of the iron tailings powder and iron tailings sand and account for the 53%~57% of component gross mass used.
2. a kind of large dosage iron tailing concrete according to claim 1, it is characterised in that：The water reducer volume is glue
The 1.5% of gel material weight, water-cement ratio is 0.33；Wherein Binder Materials is the mixture of cement, silicon ash and flyash, each component
Ratio be cement, silicon ash and flyash=1:0.25:0.63.
3. a kind of large dosage iron tailing concrete according to claim 2, it is characterised in that：The cement is common silicic acid
The portland cement of salt cement or strength grade more than or equal to 42.5；The silicon ash is that dioxide-containing silica is more than or equal to 90%
Silicon ash；The flyash is I grade of flyash.
4. a kind of large dosage iron tailing concrete according to claim 3, it is characterised in that：The particle diameter of the iron tailings powder
Less than or equal to 0.3mm.
5. a kind of large dosage iron tailing concrete according to claim 4, it is characterised in that：The iron tailings sand grains footpath is
0.08mm~2.5mm.
6. a kind of large dosage iron tailing concrete according to claim 5, it is characterised in that：Described iron tailings sand and iron
Mine tailing is the discarded object of mining site discharge, by being obtained after sieving.
7. a kind of large dosage iron tailing concrete according to claim 6, it is characterised in that：The water reducer is polycarboxylic acids
Series high-efficiency water-reducing agent or naphthalene series high-efficiency water-reducing agent.
8. a kind of preparation method of the large dosage iron tailing concrete in claim 1-7 described in any one, its feature exists
In, including step is as follows：
Step one, material is weighed by iron tailings sand, iron tailings powder, cement, silicon ash and flyash by the proportioning, pours into mixer
Middle stirring, makes it stir；
Step 2, load weighted water reducer is mixed with water, is stirred；
Step 3, the mixed liquor that will be made in step 2 is added in mixer at twice, and 1min~2min is stirred every time；Second
It is quiet to stop 30s after adding mixed liquor to stir the above-mentioned time, it is further continued for stirring, until slurry stirs, the iron tailing concrete
Complete.
9. the preparation method of a kind of large dosage iron tailing concrete according to claim 8, it is characterised in that：In step
Mixing time be 1min~2min.
10. the preparation method of a kind of large dosage iron tailing concrete according to claim 9, it is characterised in that：Described
Iron tailings sand is the discarded object of mining site discharge with iron tailings powder, no longer levigate by machine by being obtained after sieving；Iron tailings
The particle diameter of powder is less than or equal to 0.3mm, and iron tailings sand grains footpath is 0.08mm~2.5mm.
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| CN107399948A (en) * | 2017-08-30 | 2017-11-28 | 河北建筑工程学院 | Fill strong concrete and its preparation and the application of iron tailings sand |
| CN107473660A (en) * | 2017-08-30 | 2017-12-15 | 河北建筑工程学院 | A kind of building block of high intensity sulfurizing iron tailing concrete and its preparation and application |
| CN107540309A (en) * | 2017-09-15 | 2018-01-05 | 中交武汉港湾工程设计研究院有限公司 | A kind of slope-protecting prefabricated concrete concrete of iron-containing tailing and preparation method thereof |
| CN108191319A (en) * | 2018-02-27 | 2018-06-22 | 王福州 | A kind of iron tailings sand concrete and preparation method thereof |
| CN110877968A (en) * | 2019-11-04 | 2020-03-13 | 东北大学 | Cement-based composite material using iron tailings and preparation method thereof |
| CN111205038A (en) * | 2020-01-19 | 2020-05-29 | 河北农业大学 | Pumping total iron tailing concrete and preparation method thereof |
| CN111892365A (en) * | 2020-07-02 | 2020-11-06 | 河海大学 | Iron tailing based building block and preparation method thereof |
| CN112830732A (en) * | 2021-01-19 | 2021-05-25 | 张延年 | Concrete doped with multi-element admixture and preparation method thereof |
| CN112851235A (en) * | 2021-01-19 | 2021-05-28 | 张延年 | Preparation method of concrete with high iron tailing content |
| CN114031335A (en) * | 2021-11-30 | 2022-02-11 | 中交二公局第三工程有限公司 | Method for improving concrete quality by using iron tailings |
| CN114230269A (en) * | 2021-12-06 | 2022-03-25 | 中交二公局第三工程有限公司 | Manufacturing method capable of improving forming speed of iron tailing concrete prefabricated part |
| CN114671646A (en) * | 2022-04-19 | 2022-06-28 | 东南大学 | Controllable low-strength material prepared from iron ore tailings and preparation method |
| CN115340328A (en) * | 2022-07-19 | 2022-11-15 | 河北建筑工程学院 | Large-mixing-amount anti-permeability iron tailing sand concrete and preparation method thereof |
| CN117819867A (en) * | 2024-03-05 | 2024-04-05 | 天津冶建特种材料有限公司 | Iron tailing-based baking-free brick and preparation method thereof |
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| CN107473660A (en) * | 2017-08-30 | 2017-12-15 | 河北建筑工程学院 | A kind of building block of high intensity sulfurizing iron tailing concrete and its preparation and application |
| CN107399948A (en) * | 2017-08-30 | 2017-11-28 | 河北建筑工程学院 | Fill strong concrete and its preparation and the application of iron tailings sand |
| CN107540309A (en) * | 2017-09-15 | 2018-01-05 | 中交武汉港湾工程设计研究院有限公司 | A kind of slope-protecting prefabricated concrete concrete of iron-containing tailing and preparation method thereof |
| CN107540309B (en) * | 2017-09-15 | 2020-10-02 | 中交武汉港湾工程设计研究院有限公司 | Slope protection prefabricated part concrete containing iron tailings and preparation method thereof |
| CN108191319A (en) * | 2018-02-27 | 2018-06-22 | 王福州 | A kind of iron tailings sand concrete and preparation method thereof |
| CN110877968A (en) * | 2019-11-04 | 2020-03-13 | 东北大学 | Cement-based composite material using iron tailings and preparation method thereof |
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| CN111892365B (en) * | 2020-07-02 | 2021-10-01 | 河海大学 | Iron tailing based building block and preparation method thereof |
| CN111892365A (en) * | 2020-07-02 | 2020-11-06 | 河海大学 | Iron tailing based building block and preparation method thereof |
| CN112830732A (en) * | 2021-01-19 | 2021-05-25 | 张延年 | Concrete doped with multi-element admixture and preparation method thereof |
| CN112851235A (en) * | 2021-01-19 | 2021-05-28 | 张延年 | Preparation method of concrete with high iron tailing content |
| CN114031335A (en) * | 2021-11-30 | 2022-02-11 | 中交二公局第三工程有限公司 | Method for improving concrete quality by using iron tailings |
| CN114031335B (en) * | 2021-11-30 | 2022-09-13 | 中交二公局第三工程有限公司 | Method for improving concrete quality by using iron tailings |
| CN114230269A (en) * | 2021-12-06 | 2022-03-25 | 中交二公局第三工程有限公司 | Manufacturing method capable of improving forming speed of iron tailing concrete prefabricated part |
| CN114671646A (en) * | 2022-04-19 | 2022-06-28 | 东南大学 | Controllable low-strength material prepared from iron ore tailings and preparation method |
| CN115340328A (en) * | 2022-07-19 | 2022-11-15 | 河北建筑工程学院 | Large-mixing-amount anti-permeability iron tailing sand concrete and preparation method thereof |
| CN117819867A (en) * | 2024-03-05 | 2024-04-05 | 天津冶建特种材料有限公司 | Iron tailing-based baking-free brick and preparation method thereof |
| CN117819867B (en) * | 2024-03-05 | 2024-05-14 | 天津冶建特种材料有限公司 | Iron tailing-based baking-free brick and preparation method thereof |
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