CN105693127B - Bayer process red mud roadbed special curing agent, its preparation method and application process - Google Patents
Bayer process red mud roadbed special curing agent, its preparation method and application process Download PDFInfo
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- CN105693127B CN105693127B CN201610145601.0A CN201610145601A CN105693127B CN 105693127 B CN105693127 B CN 105693127B CN 201610145601 A CN201610145601 A CN 201610145601A CN 105693127 B CN105693127 B CN 105693127B
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- red mud
- curing agent
- ardealite
- stabilizer
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- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004131 Bayer process Methods 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 45
- 230000003750 conditioning effect Effects 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims description 14
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 10
- 239000001110 calcium chloride Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical group [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 5
- 229910001626 barium chloride Inorganic materials 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims 2
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 239000011149 active material Substances 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- -1 chloride salt compound Chemical class 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of Bayer process red mud roadbed special curing agent, its preparation method and application process, belong to field of road.The curing agent is mixed by a certain percentage by industrial residue phosphogypsum, conditioning agent and stabilizer, using chemical characteristic complementary between solid waste, the solidification realized to red mud is excited by active material, so as to red mud is used for into roadbed filling engineering.With non-secondary pollution, with low cost, preparation method is simple and the characteristics of resource utilization high.
Description
Technical field
The present invention relates to field of road, specifically a kind of Bayer process red mud roadbed special curing agent, its preparation
Method and application process.
Background technology
Red mud is that the solid waste discharged after aluminum oxide is refined from bauxite.The general iron containing oxidation is big, outward appearance
It is similar to redness of the skin or complexion soil, thus gain the name.1 ton of aluminum oxide is generally often produced, 0.8 ~ 1.5 ton of red mud will be produced.2014
Year national about 80,000,000 tons of red mud yield, about 3,200,000 tons of utilization, utilization rate 4%.The accumulative volume of cargo in storage of current China red mud surpasses
3.5 hundred million tons are crossed, a large amount of of red mud store up, and both land occupation, waste of resource, easily caused environmental pollution and potential safety hazard again.Therefore,
To greatest extent reduce red mud pilling and harm, realize by all kinds of means, large-scale recycling it is extremely urgent.
Meanwhile, with the high speed development of highway in China construction project, Load materials consuming it is substantial amounts of it is non-renewable from
Right resource.At home in the highway construction in developed area and important area corridor, or even occur in that native source phenomenon in short supply.This
Not only engineering construction quality is caused with project progress and is had a strong impact on, while also being caused sternly to 1,800,000,000 mu of arable land red lines of China
Impact again.Therefore, the regeneration of suitable waste and scrap is found as a weight for coming highway administration and scientific research department this year
Want task.If red mud can be applied to huge highway engineering construction on a large scale, can not only turn waste into wealth, save treasured
Expensive non-renewable land resource, also for the extensive minimizing application of the Industry Waste rejected material with red mud as representative provides one
Maximally effective approach, meets national environmental protection policy and advocates the basic principle of low-carbon economy.
Existing conventional curing agents can not effectively lower the pH value and contaminative of red mud, and long-time stability are poor.If
There is no a kind of suitable red mud solidified material, will seriously restrict large-scale application of the red mud in highway industry.
The content of the invention
Technical assignment of the invention is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of Bayer process red mud roadbed is special solid
Agent, the curing agent can effectively reduce the pH value of red mud, lift the long-time stability of red mud roadbed.
Further technical assignment of the invention is to provide the preparation method of above-mentioned curing agent.
Further technical assignment of the invention is to provide the application process of above-mentioned curing agent.
Technical assignment of the invention is realized in the following manner：Bayer process red mud roadbed special curing agent, is characterized in
It is prepared from the following raw materials in parts by weight：
60-90 parts of ardealite
20-30 parts of conditioning agent
0.5-2 parts of stabilizer,
The conditioning agent is alkali metal class compound；
The stabilizer is villaumite.
The weight proportion of each raw material is preferably：
70-80 parts of ardealite
23-28 parts of conditioning agent
0.8-1.2 parts of stabilizer.
The weight proportion of each raw material is most preferably：
75 parts of ardealite
24 parts of conditioning agent
1 part of stabilizer.
Ardealite, conditioning agent and the stabilizer of formula ratio are weighed, it is well mixed to can obtain curing agent finished product of the present invention, but
In order to reach superior technique effect, the preparation method of curing agent of the present invention preferably comprises following steps：
a）The ardealite of formula ratio is taken, after being dried under the conditions of 100 ~ 110 DEG C, by grinding, 100 mesh sieves is crossed standby；
b）After the conditioning agent of formula ratio is dried under the conditions of 60-70 DEG C, add in ardealite described in step a, fully mix
Grinding is closed, the pH value of compound is 5 ~ 7；
c）Under normal temperature, the stabilizer of formula ratio is added in compound described in step b, be sufficiently mixed uniformly, obtained final product solid
Agent finished product.
The conditioning agent can be alkali metal class compound of the prior art etc., but in order to reach best-of-breed technology effect,
Preferably calcium chloride and/or slag micropowder.During with the mixture of calcium chloride and slag micropowder as conditioning agent, calcium chloride and slag are micro-
The weight ratio of powder is 3-8:1 is preferably 5:1.
The stabilizer can be chloride salt compound of the prior art, but in order to reach best-of-breed technology effect, preferably
It is barium chloride.
In curing agent of the present invention, there is neutralization reaction in acid ion in ardealite with the alkaline matter of red mud, while solid
Active ingredient in agent forms insoluble matter with the iron content aluminum material of red mud, so as to realize reducing red mud pH value, solidification red mud
In heavy metal ion purpose.Conditioning agent and stabilizer collective effect, can also excite the active material in red mud, generate iron
Aluminic acid base gel realizes the stabilisation of harmful ion in red mud, while improving the intensity of red mud, pollutant is wrapped, absorption
And lose migration characteristic.Therefore, it can be applied to curing agent of the present invention in the process of deployment of red mud roadbed.
In the process of deployment of red mud roadbed, curing agent of the present invention can be added to red mud according to certain mass ratio
In, after being stirred with red mud by carry out roadbed laying.The process of deployment phase of process of deployment and red mud roadbed in the prior art
Together.
Preferably, curing agent and the mix ratio of red mud are 8% ~ 12% in work progress（Mass percent）.
The water content of filling roadbed red mud is preferably more than optimum moisture content 2 percentage points.
Optimum moisture content reference《Highway earthwork test rule》（JTG E40-2007）Compaction test T0131-2007 determines.
Bayer process red mud roadbed special curing agent of the invention, its preparation method and application process have compared with prior art
There is beneficial effect following prominent：
（One）Present invention curing agent uses industrial solid castoff（Ardealite）Be raw material, using solid waste it
Between complementary chemical characteristic, the solidification realized to red mud is excited by active material, so as to red mud is used for into highway subgrade
Reclamation work；
（Two）Non-secondary pollution, it is with low cost and resource utilization is high；
（Three）Preparation method is simple, easy to utilize.
Specific embodiment
Bayer process red mud roadbed special curing agent of the invention, its preparation method and application process are made with specific embodiment
It is explained in detail below.
Unless otherwise instructed, the content of following each compositions used is weight percentage content.
Embodiment one：
【Formula】
The Kg CaCl of ardealite 752 20 Kg
The Kg BaCl of slag micropowder 42 1 Kg
【Preparation method】
a）The ardealite of formula ratio is dried into 6 hours under the conditions of 100 ~ 110 DEG C, by ball mill grinding and mistake 100
Mesh sieve is standby；
b）By the CaCl of formula ratio2, after slag micropowder dries 6 hours under the conditions of 65 DEG C, add what step a got ready
Ardealite, is sufficiently mixed grinding, obtains pH value for 6 compounds；
c）Under normal temperature, by the BaCl of formula ratio2It is added in compound described in step b, is sufficiently mixed uniformly, obtains final product solidification
Agent finished product.
【Using and effect】
It is more than the ratio and optimum moisture content by the above-mentioned curing agent for preparing according to 10% that 2 percentage points of red muds are mixed
It is even, and molding maintenance.The rear unconfined compressive strength of 7 days is 1.5MPa, and the pH value of red mud test specimen is reduced to 8.9.
Embodiment two：
【Formula】
The Kg CaCl of ardealite 702 24 Kg
The Kg BaCl of slag micropowder 4.82 1.2 Kg
【Preparation method】
Preparation method is identical with embodiment one.
【Using and effect】
Application process is identical with embodiment one.
The rear unconfined compressive strength of 7 days is 1.2MPa, and the pH value of red mud test specimen is reduced to 9.3.
Embodiment three：
【Formula】
Ardealite 80Kg CaCl2 16Kg
The Kg BaCl of slag micropowder 3.22 0.8 Kg
【Preparation method】
Preparation method is identical with embodiment one.
【Using and effect】
Application process is identical with embodiment one.
The rear unconfined compressive strength of 7 days is 1.4MPa, and the pH value of red mud test specimen is reduced to 8.5.
Example IV：
【Formula】
The Kg CaCl of ardealite 752 24Kg
BaCl2 1Kg
【Preparation method】
Preparation method is identical with embodiment one.
【Using and effect】
Application process is identical with embodiment one.
The rear unconfined compressive strength of 7 days is 1.0MPa, and the pH value of red mud test specimen is reduced to 9.5.
Embodiment five：
【Formula】
The Kg slag micropowders 24Kg of ardealite 75
BaCl2 1 Kg
【Preparation method】
Preparation method is identical with embodiment one.
【Using and effect】
Application process is identical with embodiment one.
The rear unconfined compressive strength of 7 days is 1.2MPa, and the pH value of red mud test specimen is reduced to 8.9.
Claims (3)
1. Bayer process red mud roadbed special curing agent, it is characterised in that be prepared from the following raw materials in parts by weight：
70-80 parts of ardealite
23-28 parts of conditioning agent
0.8-1.2 parts of stabilizer,
The conditioning agent is the mixture of calcium chloride, or slag micropowder, or calcium chloride and slag micropowder, calcium chloride and slag
The weight ratio of micro mist is 5:1；
The stabilizer is barium chloride；
Its preparation method is comprised the following steps：
a）Ardealite is taken by proportioning, after being dried under the conditions of 100 ~ 110 DEG C, by grinding, 100 mesh sieves is crossed standby；
b）Conditioning agent is taken by proportioning, after being dried under the conditions of 60-70 DEG C, is added in ardealite described in step a, be sufficiently mixed and grind
Mill, the pH value of compound is 5 ~ 7；
c）Under normal temperature, stabilizer is taken by proportioning, and be added in compound described in step b, be sufficiently mixed uniformly, obtain final product curing agent
Finished product.
2. the preparation method of Bayer process red mud roadbed special curing agent, it is characterised in that comprise the following steps：
a）Ardealite is taken by proportioning, after being dried under the conditions of 100 ~ 110 DEG C, by grinding, 100 mesh sieves is crossed standby；
b）Conditioning agent is taken by proportioning, after being dried under the conditions of 60-70 DEG C, is added in ardealite described in step a, be sufficiently mixed and grind
Mill, the pH value of compound is 5 ~ 7；
c）Under normal temperature, stabilizer is taken by proportioning, and be added in compound described in step b, be sufficiently mixed uniformly, obtain final product curing agent
Finished product；
The weight proportion of each raw material is：
70-80 parts of ardealite
23-28 parts of conditioning agent
0.8-1.2 parts of stabilizer,
The conditioning agent is the mixture of calcium chloride, or slag micropowder, or calcium chloride and slag micropowder, calcium chloride and slag
The weight ratio of micro mist is 5:1；
The stabilizer is barium chloride.
3. the application process of Bayer process red mud roadbed special curing agent described in claim 1, it is characterised in that：With mass percent
Meter, curing agent and the mix ratio of red mud are 8% ~ 12% in work progress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145601.0A CN105693127B (en) | 2016-03-15 | 2016-03-15 | Bayer process red mud roadbed special curing agent, its preparation method and application process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145601.0A CN105693127B (en) | 2016-03-15 | 2016-03-15 | Bayer process red mud roadbed special curing agent, its preparation method and application process |
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| Publication Number | Publication Date |
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| CN105693127A CN105693127A (en) | 2016-06-22 |
| CN105693127B true CN105693127B (en) | 2017-06-27 |
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| CN106676998B (en) * | 2017-02-09 | 2022-05-06 | 山东省交通科学研究院 | Red mud basic unit cement concrete pavement composite pavement structure |
| CN106676999B (en) * | 2017-02-09 | 2022-06-14 | 山东省交通科学研究院 | Red mud and broken stone combination formula basic unit road surface structure is stabilized to red mud |
| CN106676995B (en) * | 2017-02-09 | 2019-07-23 | 山东省交通科学研究院 | A kind of deep formula asphalt pavement structure design method of Bayer process red mud roadbed |
| CN108249856B (en) * | 2018-01-26 | 2020-12-25 | 湖北恒沁环保科技有限责任公司 | Modifier and method for improving utilization rate of red mud |
| CN108275931B (en) * | 2018-01-26 | 2020-12-18 | 湖北恒沁环保科技有限责任公司 | Phosphogypsum modified material and application thereof in road base |
| CN108203290B (en) * | 2018-01-26 | 2021-04-23 | 湖北恒沁环保科技有限责任公司 | Red mud modified material and application thereof in road subgrade |
| CN108793909B (en) * | 2018-08-15 | 2021-11-19 | 程钰 | Special curing agent for aluminum smelting waste residues and preparation method and application method thereof |
| CN110668777A (en) * | 2019-11-12 | 2020-01-10 | 山东理工大学 | Titanium gypsum road curing agent, and preparation and application methods thereof |
| CN112897977B (en) * | 2021-03-26 | 2022-03-29 | 济南通达公路工程有限公司 | Roadbed filling material containing red mud and preparation method thereof |
| CN113185980A (en) * | 2021-04-09 | 2021-07-30 | 太原理工大学 | Lead-polluted soil curing agent combining red mud, carbide slag and phosphogypsum and preparation method thereof |
| CN113440786A (en) * | 2021-04-16 | 2021-09-28 | 冯振河 | Alkali inhibitor for inhibiting red mud saltpetering and preparation method thereof |
| CN113135727B (en) * | 2021-04-19 | 2022-10-25 | 山东高速集团有限公司 | Red mud-based material for roadbed water stabilization layer and preparation method thereof |
| CN114292082B (en) * | 2021-12-17 | 2022-09-23 | 山东高速集团有限公司 | Red mud-based stable material for roads and preparation method and application thereof |
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| CN1115745A (en) * | 1995-03-08 | 1996-01-31 | 陈昌明 | Water solution of inorganic chloride and its prepn |
| CN101439954A (en) * | 2007-11-25 | 2009-05-27 | 铜陵化学工业集团有限公司 | Method for using phosphogypsum in mine goaf consolidated filling |
| CN103539423A (en) * | 2013-11-04 | 2014-01-29 | 江苏坤泽科技股份有限公司 | Sludge curing material for comprehensively utilizing phosphorous gypsum |
-
2016
- 2016-03-15 CN CN201610145601.0A patent/CN105693127B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115745A (en) * | 1995-03-08 | 1996-01-31 | 陈昌明 | Water solution of inorganic chloride and its prepn |
| CN101439954A (en) * | 2007-11-25 | 2009-05-27 | 铜陵化学工业集团有限公司 | Method for using phosphogypsum in mine goaf consolidated filling |
| CN103539423A (en) * | 2013-11-04 | 2014-01-29 | 江苏坤泽科技股份有限公司 | Sludge curing material for comprehensively utilizing phosphorous gypsum |
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Denomination of invention: Special curing agent for Bayer process red mud subgrade, its preparation method and application method Effective date of registration: 20220317 Granted publication date: 20170627 Pledgee: Rizhao Bank Co.,Ltd. Jinan Branch Pledgor: Shandong Haiyi ecological environment protection Co.,Ltd. Registration number: Y2022980002602 |
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