CN106966666A - Method for preparing concrete by compounding waste denitration catalyst and fly ash and concrete - Google Patents
Method for preparing concrete by compounding waste denitration catalyst and fly ash and concrete Download PDFInfo
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- CN106966666A CN106966666A CN201710285015.0A CN201710285015A CN106966666A CN 106966666 A CN106966666 A CN 106966666A CN 201710285015 A CN201710285015 A CN 201710285015A CN 106966666 A CN106966666 A CN 106966666A
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- concrete
- flyash
- denitrating catalyst
- catalyst
- cement
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- 239000004567 concrete Substances 0.000 title claims abstract description 67
- 239000003054 catalyst Substances 0.000 title claims abstract description 64
- 239000010881 fly ash Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002699 waste material Substances 0.000 title abstract description 11
- 238000013329 compounding Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000004568 cement Substances 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000006703 hydration reaction Methods 0.000 claims abstract description 8
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims description 29
- 239000004576 sand Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000010883 coal ash Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 238000002386 leaching Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Catalysts (AREA)
Abstract
The invention relates to a method for preparing concrete by mixing a waste denitration catalyst and fly ash and the concrete. The concrete is prepared by the method. The invention exerts the superposition effect, improves the impermeability and the slump of the concrete, has the compressive strength meeting the strength requirement of C30 concrete, and reduces the dosage of the water reducing agent; the impermeability of the concrete is better than that of concrete not doped with fly ash and waste denitration catalyst; the hydration reaction in the complex doping preparation has the effects of solidifying and stabilizing heavy metal elements in the waste denitration catalyst, so that the leaching of the heavy metal elements can be effectively reduced, and the secondary pollution to the environment is reduced; the total mass of the substituted cement reaches 20%, the working performance of the concrete is improved, the production cost of the concrete is reduced, the resource utilization of wastes is realized, and the prepared commercial concrete has wide application prospect.
Description
Technical field
The present invention relates to concrete material field, more particularly to one kind is mixed again by waste flue gas denitration catalyst and flyash
Prepared concrete.
Background technology
National ring does [2014] No. 990 texts of letter《Notice on strengthening waste flue gas denitration catalyst supervision》Formally will
Waste flue gas denitration catalyst（Vanadium titanium system）Include hazardous waste to be managed, it is desirable to improve waste flue gas denitration catalyst as early as possible（Vanadium
Titanium system）Regeneration, using and disposing capacity.Currently, the regeneration techniques of domestic dead catalyst reaches its maturity, and forms certain
Commercial scale, and for not possessing the dead catalyst of regeneration value, then generally take and transfer to downstream to hold dangerous waste disposal qualification
The method that unit was filled or extracted recycling.There is certain potential safety hazard, and land occupation in landfill stabilization method, no
With Prospects of Comprehensive Utilization；Extraction recovery method, which then exists in complex process, processing cost height, processing procedure, is also easy to produce secondary dirt
Dye, is unfavorable for environmental protection and the raising of comprehensive benefit.In addition, the comprehensive utilization to realize solid waste, country puts into effect
Correlation is encouraged and support policy, and it is empty to provide broad mass market for application of the dead catalyst in the building materials fields such as cement, concrete
Between.
In recent years, in green concrete manufacture based on composite mixing technology is fast-developing, and flyash is ground after processing with other
Waste residue is comprehensively utilized, and is produced superimposion effect, is provided for application of thermal power plant's SCR dead catalyst in concrete wide
Prospect.
The content of the invention
The method for preparing concrete mixed by useless denitrating catalyst and flyash again it is an object of the present invention to provide a kind of.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
It is a kind of that the method for preparing concrete is mixed by useless denitrating catalyst and flyash again, including by vanadium titanium system give up denitrating catalyst,
Flyash, cement, sandstone addition water, water reducer are stirred, hydration reaction, curing molding concrete.
The present invention preferably, is incited somebody to action when preparing every cube of concrete：
Cement, the useless denitrating catalyst of vanadium titanium system, flyash amount to：300-380kg, wherein：Vanadium titanium system gives up denitrating catalyst, fine coal
Ash amounts to 18-72kg, and remaining is cement；
Rubble：960-1100kg；
Natural sand：750-850kg；
Water：150-200kg；
Water reducer：Cement, vanadium titanium system useless denitrating catalyst, the 0.5%-1.1% of flyash gross mass,
Will above-mentioned quality dispensing mix after be stirred, hydration reaction, curing molding concrete.
The present invention preferably, vanadium titanium system dead catalyst, the gross mass of flyash account for cement, vanadium titanium system give up denitrating catalyst,
The 5%-20% of flyash gross mass.
The present invention preferably, uses the vanadium titanium system denitration dead catalyst activity index of 28 days for 60-70%；Using flyash
The activity index of 28 days is 70-80%.
Preferably, give up denitrating catalyst, flyash of vanadium titanium system is stirred the present invention again after being crushed to more than 20 mesh.
The present invention preferably, uses the particle diameter of natural sand for 0.15mm-4.75mm, using the particle diameter 5mm-20mm of rubble.
Preferably, cement is the portland cement that strength grade is more than 42.5 to the present invention, mark thick 26%.
The present invention preferably, the slow-setting polycarboxylic acid water reducing agent for using described water reducer to be not less than 25% for water-reducing rate.Subtract
The use of aqua can further reduce water consumption while working performance of concrete is ensured；Admixture add water stirring and into
Occur hydration reaction in type maintenance processes, can effectively reduce the Leaching of Heavy Metals in dead catalyst, meet its leaching concentration
The requirement of GB5085.3-2007 limit values, solidification, static stabilization are played to the heavy metal in dead catalyst.
It is a further object to provide a kind of concrete.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of concrete, its as it is described mixed again as useless denitrating catalyst and flyash prepare the method for concrete prepared by and
Into.
The present invention preferably, includes per cubic meter of concrete：Cement, useless denitrating catalyst, flyash amount to：300-
380kg, wherein：Vanadium titanium system denitration dead catalyst：18-36kg, flyash：36-54kg, rubble：960-1100kg, natural sand：
750-850kg, water：150-200kg, water reducer：1.5-4.18kg.
Because above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
1st, useless denitrating catalyst and flyash are mixed for as concrete admixture, performance synergistic effect, with singly mixing useless denitration catalyst again
Agent is compared, and substantially improves the slump and impermeability of concrete；
2nd, useless denitrating catalyst and flyash are mixed prepare in Concrete again, its hydration reaction occurred, to the denitration catalyst that gives up
Heavy metal element in agent plays solidification, static stabilization, can effectively reduce its leaching, reduce to secondary environmental pollution；
3rd, useless denitrating catalyst and flyash mix substitution cement gross mass and reach 20% again, reduce cement consumption, are improving coagulation
While native service behaviour, the production cost of concrete is reduced, the recycling of discarded object, business prepared by this method is realized
Had a extensive future with concrete.
Embodiment
With reference to embodiment, the invention will be further described：
It is a kind of that the method for preparing concrete is mixed by useless denitrating catalyst and flyash again, including by vanadium titanium system give up denitrating catalyst,
Flyash, cement, natural sand, rubble, addition water, water reducer are stirred, hydration reaction, curing molding concrete.Wherein：Vanadium
The titanium system denitration dead catalyst activity index of 28 days is 67%, and the flyash activity index of 28 days is 78%, and the useless denitration of vanadium titanium system is urged
Agent, fly ash grain are 20 mesh；Cement is the portland cement that strength grade is more than 42.5, mark thick 26%, presetting period
161min, final setting time 201min；The particle diameter of natural sand is 0.15mm-4.75mm, the particle diameter 5mm-20mm of rubble；Water reducer is
Water-reducing rate is 27% slow-setting polycarboxylic acid water reducing agent.
Embodiment one：
A kind of concrete, includes cement 306kg, vanadium titanium system denitration dead catalyst 18kg, flyash per cubic meter of concrete
36kg, natural sand 810kg, rubble 1030kg, water 180kg, water reducer 2.16kg.
Embodiment two：
A kind of concrete, includes cement 306kg, vanadium titanium system denitration dead catalyst 18kg, flyash per cubic meter of concrete
54kg, natural sand 810kg, rubble 1030kg, water 180kg, water reducer 2.16kg.
Embodiment three：
A kind of concrete, includes cement 306kg, vanadium titanium system denitration dead catalyst 36kg, flyash per cubic meter of concrete
36kg, natural sand 810kg, rubble 1030kg, water 180kg, water reducer 2.16kg.
Comparative example one：
A kind of concrete, includes cement 360kg, vanadium titanium system denitration dead catalyst 0kg, flyash 0kg per cubic meter of concrete,
Natural sand 810kg, rubble 1030kg, water 180kg, the kg of water reducer 2.16.
Comparative example two：
A kind of concrete, includes cement 342kg, vanadium titanium system denitration dead catalyst 18kg, natural sand per cubic meter of concrete
810kg, stone 1030kg, water 180kg, water reducer 2.16kg.
Comparative example three：
A kind of concrete, includes cement 324kg, vanadium titanium system denitration dead catalyst 36kg, natural sand per cubic meter of concrete
810kg, stone 1030kg, water 180kg, water reducer 2.52kg.
Comparative example four：
A kind of concrete, includes cement 306kg, vanadium titanium system denitration dead catalyst 54kg, natural sand per cubic meter of concrete
810kg, stone 1030kg, water 180kg, water reducer 3.96kg.
Table one：Each embodiment parameter list：
| Embodiment | One | Two | Three | ||||
| Comparative example | One | Two | Three | Four | |||
| Slump/mm | 190 | 195 | 130 | 150 | 100 | 80 | 135 |
| 3 days compression strength/MPa | 22.7 | 20.7 | 21.8 | 28.7 | 27.9 | 27.1 | 21.6 |
| 7 days compression strength/MPa | 34.4 | 30.9 | 32.0 | 35.7 | 39.0 | 35.6 | 29.1 |
| 28 days compression strength/MPa | 43.2 | 40.5 | 42.6 | 47.2 | 43.4 | 40.6 | 35.6 |
| Seep water height/mm | 24 | 22 | 19 | 30 | 28 | 47 | 47 |
| C30 intensity requirements | Meet | Meet | Meet | Meet | Meet | Meet | Meet |
| Harmful heavy metal, which is leached, to be required（GB5085.3-2007） | Meet | Meet | Meet | Meet | Meet | Meet | Meet |
As can be seen here, useless denitrating catalyst and flyash are mixed for as concrete admixture, performance synergistic effect, with singly mixing useless take off again
Denox catalyst is compared, and substantially improves the slump of concrete（The higher the better）And impermeability（Less than 30mm）.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (10)
1. a kind of mix the method for preparing concrete again by useless denitrating catalyst and flyash, it is characterised in that：Including by vanadium titanium system
Useless denitrating catalyst, flyash, cement, sandstone addition water, water reducer are stirred, hydration reaction, curing molding concrete.
2. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：Be tod when preparing every cube of concrete：
Cement, the useless denitrating catalyst of vanadium titanium system, flyash amount to：300-380kg, wherein：Vanadium titanium system gives up denitrating catalyst, fine coal
Ash amounts to 18-72kg, and remaining is cement；
Rubble：960-1100kg；
Natural sand：750-850kg；
Water：150-200kg；
Water reducer：Cement, vanadium titanium system useless denitrating catalyst, the 0.5%-1.1% of flyash gross mass,
Will above-mentioned quality dispensing mix after be stirred, hydration reaction, curing molding concrete.
3. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：Vanadium titanium system dead catalyst, the gross mass of flyash account for cement, vanadium titanium system useless denitrating catalyst, the 5%- of flyash gross mass
20%。
4. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：The vanadium titanium system denitration dead catalyst activity index of 28 days is used for 60-70%；The flyash activity index of 28 days is used for 70-
80%。
5. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：Give up denitrating catalyst, flyash of vanadium titanium system is stirred again after being crushed to more than 20 mesh.
6. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：The particle diameter of natural sand is used for 0.15mm-4.75mm, using the particle diameter 5mm-20mm of rubble.
7. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：Cement is the portland cement that strength grade is more than 42.5, mark thick 26%.
8. according to claim 1 mix the method for preparing concrete again by useless denitrating catalyst and flyash, its feature exists
In：The slow-setting polycarboxylic acid water reducing agent for using water reducer to be not less than 25% for water-reducing rate.
9. a kind of concrete, it is characterised in that：Its as described in above-mentioned any one claim by useless denitrating catalyst and powder
Coal ash is mixed to prepare again to be formed prepared by the method for concrete.
10. concrete according to claim 9, it is characterised in that：Include per cubic meter of concrete：Cement, useless denitration
Catalyst, flyash amount to：300-380kg, wherein：Vanadium titanium system denitration dead catalyst：18-36kg, flyash：36-54kg, it is broken
Stone：960-1100kg, natural sand：750-850kg, water：150-200kg, water reducer：1.5-4.18kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285015.0A CN106966666A (en) | 2017-04-27 | 2017-04-27 | Method for preparing concrete by compounding waste denitration catalyst and fly ash and concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285015.0A CN106966666A (en) | 2017-04-27 | 2017-04-27 | Method for preparing concrete by compounding waste denitration catalyst and fly ash and concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106966666A true CN106966666A (en) | 2017-07-21 |
Family
ID=59333508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710285015.0A Pending CN106966666A (en) | 2017-04-27 | 2017-04-27 | Method for preparing concrete by compounding waste denitration catalyst and fly ash and concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106966666A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341644A (en) * | 2018-05-21 | 2018-07-31 | 中国建筑材料科学研究总院有限公司 | The curing of heavy metal in a kind of dead catalyst |
| CN110317039A (en) * | 2019-07-05 | 2019-10-11 | 江苏龙净科杰环保技术有限公司 | A method of honeycomb ceramic heat accumulator is prepared with denitrating catalyst waste material |
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|---|---|---|---|---|
| JPS55236A (en) * | 1978-06-19 | 1980-01-05 | Kanden Hankiyuu Shoji Kk | Extruding molding method of dihydric gypsum |
| CN104609753A (en) * | 2015-02-05 | 2015-05-13 | 郑志海 | Innocuous treatment process of waste flue gas denitration catalyst |
| CN104926235A (en) * | 2015-06-11 | 2015-09-23 | 陈颖通 | Treating and curing method before scrapped SCR denitration catalyst burying |
| CN105399376A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Concrete containing waste molecular sieve catalyst and preparation method thereof |
-
2017
- 2017-04-27 CN CN201710285015.0A patent/CN106966666A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55236A (en) * | 1978-06-19 | 1980-01-05 | Kanden Hankiyuu Shoji Kk | Extruding molding method of dihydric gypsum |
| CN104609753A (en) * | 2015-02-05 | 2015-05-13 | 郑志海 | Innocuous treatment process of waste flue gas denitration catalyst |
| CN104926235A (en) * | 2015-06-11 | 2015-09-23 | 陈颖通 | Treating and curing method before scrapped SCR denitration catalyst burying |
| CN105399376A (en) * | 2015-12-09 | 2016-03-16 | 文登蓝岛建筑工程有限公司 | Concrete containing waste molecular sieve catalyst and preparation method thereof |
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| Title |
|---|
| 杨医博等: "《土木工程材料》", 31 December 2016, 华南理工大学出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341644A (en) * | 2018-05-21 | 2018-07-31 | 中国建筑材料科学研究总院有限公司 | The curing of heavy metal in a kind of dead catalyst |
| CN110317039A (en) * | 2019-07-05 | 2019-10-11 | 江苏龙净科杰环保技术有限公司 | A method of honeycomb ceramic heat accumulator is prepared with denitrating catalyst waste material |
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| PB01 | Publication | ||
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Application publication date: 20170721 |