CN108086337B - A kind of method of red mud cofferdam sea reclamation - Google Patents
A kind of method of red mud cofferdam sea reclamation Download PDFInfo
- Publication number
- CN108086337B CN108086337B CN201711445540.0A CN201711445540A CN108086337B CN 108086337 B CN108086337 B CN 108086337B CN 201711445540 A CN201711445540 A CN 201711445540A CN 108086337 B CN108086337 B CN 108086337B
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- CN
- China
- Prior art keywords
- red mud
- cofferdam
- barren rock
- red
- sea reclamation
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B28/14—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 calcium sulfate cements
-
- 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
Abstract
The present invention provides a kind of method of red mud cofferdam sea reclamation, including red mud pretreatment, artificial cofferdam, red mud pilling.Barren rock is used to fill slope protection dam by the present invention, and red mud-I fills interior wall dam after organic acid neutralizes, and red mud red mud-II can satisfy the earth bearing strength value requirement that red mud makes ground, which can be used as port and pier land used or other lands used for storing up red mud reservoir after seawater neutralizes.The present invention makes barren rock, red mud obtain recycling rationally to utilize, improve resource utilization, reduce barren rock, red mud land occupation, save a large amount of lands used and construction investment needed for building red mud dump on land, harbour also is built for harbour marine reclamation land or other lands used solve a cubic meter source, marine reclamation land expense is saved, there is preferable Social benefit and economic benefit.
Description
Technical field
The present invention relates to alumina laterite resource utilization field, the methods of specifically a kind of red mud cofferdam sea reclamation.
Background technique
Red mud is the bronzing pureed solid industrial waste generated after extraction aluminium oxide in bauxite in aluminium industry processed.One
As average 1 ton of aluminium oxide of every production, subsidiary 1.0~2.0 tons of red muds of generation.
The red mud (residue) of output in aluminum oxide production process, currently used stacked arrangement are typically found non-agricultural
The farmland of woods land used or poor quality builds up primary dam with building stones or clay and surrounds reservoir area, then by spreading antiseepage in reservoir area
Red mud reservoir is formed after the technical treatments such as film, then is continued to build a dam on the basis of primary dam with red mud and carries out red mud in library
Permanently store up.It is also inside to continue to use geotechnological packeted soil gradually along dam body heap height, dam Nei Dui by rolling as dam body with soil
Deposit red mud.To solve Bayer process red mud stockpiling and the technical problem built a dam, dry method stockpiling, red mud from sintering process build a dam, red mud filter pressing,
Drainage system is installed in subregion stockpiling, sub- dam, has been generated with technologies such as steel mesh dam body consolidations.
Since the red mud amount of output in aluminum oxide production process is very big, quantity is needed very when using above-mentioned stacked arrangement
Big red mud dump land used needs to spend the red mud dump construction cost of great number.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of red mud cofferdam sea reclamation, to solve to deposit in above-mentioned background technique
The problem of.
The technical scheme of the present invention is realized as follows:
A kind of method of red mud cofferdam sea reclamation, comprising the following steps:
(1) red mud pre-processes, comprising:
Cofferdam red mud-I: oxalic acid being added in former red mud, is stirred evenly, and reacts 1h ~ 2h, is neutralized the alkali in red mud, is obtained
Cofferdam red mud-I is obtained, oxalic acid additive amount is the 15% ~ 20% of red mud amount of solid；
Stockpiling red mud-II: seawater is added in former red mud, is sized mixing, after sizing mixing concentration be 10% ~ 20%, then plus
The polymeric ferric sulfate flocculant for entering red mud amount of solid 0.5% ~ 1% is concentrated again by lotion thickener, and acquisition underflow density 55% ~
60% red mud lotion obtains stockpiling red mud-II then by red mud lotion by the filters pressing of mode filter press, lotion thickener and
The overflow of mode filter press is directly discharged into marine；
(2) artificial cofferdam, comprising:
A. barren rock throwing: the form throwing barren rock combined using excavator with dump truck fills slope protection barren rock dam；
B. raw material mixes: by red mud-I, cement, flyash, gypsum, slag micropowder, citric acid, polyacrylamide, sulfuric acid
Ferrous weight percent: red mud-I 45% ~ 55%: cement 10% ~ 15%: flyash 15% ~ 20%: gypsum 8% ~ 10%: slag micropowder
3% ~ 5%: citric acid 1% ~ 3%: polyacrylamide 2% ~ 4%: ferrous sulfate 1% ~ 3% is added blender and stirs evenly, and obtains mix；
C. it fills interior wall: mix uniform ground being filled on the inside of outer slope barren rock dam, layered rolling, every layer of the bed of material
Height is not more than 600mm, and cofferdam and land water front surround a coastal red mud reservoir；
(3) red mud pilling, comprising:
A. raw material mixes: by red mud-II, clay weight percent: red mud-II 90% ~ 95%: clay 5% ~ 10% mixes equal
It is even, obtain heap material stock；
B. it stores up: heap material stock is paved in coastal red mud reservoir, layered rolling, every thickness degree 800mm ~ 1000mm.
Further, the former red mud of the step (1) is the red mud for the concentration 40% ~ 45% discharged after alumina producer washing concentrating
Slurry.
Further ,-I PH < 8.0 of step (1) cofferdam red mud.
Further, the step (1) stores up-II PH < 9.0 of red mud, moisture content 25% ~ 30%.
Further, the artificial cofferdam of the step (2) is completed during seawater ebb.
Further, the step A barren rock granularity is greater than 300mm.
Further, the step A slope protection barren rock width at dam crest is greater than 5m.
Further, the step C interior wall width at dam crest is greater than 10m.
The invention has the benefit that
Barren rock is used to fill slope protection dam by the present invention, and red mud-I fills interior wall dam after organic acid neutralizes, and seawater is red after neutralizing
Mud red mud-II can satisfy the earth bearing strength value requirement that red mud makes ground, which can be used as port and pier use for storing up red mud reservoir
Ground or other lands used.The present invention makes barren rock, red mud obtain recycling rationally to utilize, and improves resource utilization, reduces barren rock, red mud
Land occupation saves a large amount of lands used and construction investment needed for building red mud dump on land, also builds code for harbour marine reclamation land
Head or other lands used solve a cubic meter source, save marine reclamation land expense, have preferable Social benefit and economic benefit.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that implement describedly
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A kind of method of red mud cofferdam sea reclamation, comprising the following steps:
(1) red mud pre-processes, comprising:
Cofferdam red mud-I: the oxalic acid of red mud amount of solid 15% is added to the concentration 40% discharged after alumina producer washing concentrating
Red mud in, stir evenly, react 1h, neutralize red mud in alkali, obtain the cofferdam PH=7.6 red mud-I；
Stockpiling red mud-II: seawater being added in the red mud for the concentration 40% discharged after alumina producer washing concentrating, is carried out
It sizes mixing, concentration is 20% after sizing mixing, and the polymeric ferric sulfate flocculant of red mud amount of solid 0.5% is then added, passes through lotion thickener
It is concentrated again, obtains the red mud lotion of underflow density 60%, then by red mud lotion by the filters pressing of mode filter press, obtain containing PH=
8.7, stockpiling red mud-II of water rate 25%, the overflow of lotion thickener and mode filter press are directly discharged into marine；
(2) artificial cofferdam, comprising:
A. barren rock throwing: the form throwing barren rock combined using excavator with dump truck fills outer slope barren rock dam, gives up
Stone width at dam crest 5m；
B. raw material mixes: by red mud-I, cement, flyash, gypsum, slag micropowder, citric acid, polyacrylamide, sulfuric acid
Ferrous weight percent: red mud-I 45%: cement 10%: flyash 20%: gypsum 10%: slag micropowder 5%: citric acid 3%: poly- third
Acrylamide 4%: ferrous sulfate 3% is added blender and stirs evenly, and obtains mix；
C. it fills interior wall: mix uniform ground being filled on the inside of outer slope barren rock dam, layered rolling, every layer of the bed of material
Height 500mm, interior wall width at dam crest 12m, cofferdam and land water front surround a coastal red mud reservoir；
(3) red mud pilling, comprising:
A. raw material mixes: by red mud-II, clay weight percent: red mud-II 90%: clay 10% is uniformly mixed, and is obtained
Heap material stock；
B. it stores up: heap material stock is paved in coastal red mud reservoir, layered rolling, every thickness degree 1000mm, until filling up red
Mud library.
Embodiment 2
A kind of method of red mud cofferdam sea reclamation, comprising the following steps:
(1) red mud pre-processes, comprising:
Cofferdam red mud-I: the oxalic acid of red mud amount of solid 18% is added to the concentration 42% discharged after alumina producer washing concentrating
Red mud in, stir evenly, react 1.5h, neutralize red mud in alkali, obtain the cofferdam PH=7.3 red mud-I；
Stockpiling red mud-II: seawater being added in the red mud for the concentration 42% discharged after alumina producer washing concentrating, is carried out
It sizes mixing, concentration is 15% after sizing mixing, and the polymeric ferric sulfate flocculant of red mud amount of solid 0.8% is then added, passes through lotion thickener
It is concentrated again, obtains the red mud lotion of underflow density 57%, then by red mud lotion by the filters pressing of mode filter press, obtain containing PH=
8.5, stockpiling red mud-II of water rate 28%, the overflow of lotion thickener and mode filter press are directly discharged into marine；
(2) artificial cofferdam, comprising:
A. barren rock throwing: the form throwing barren rock combined using excavator with dump truck fills outer slope barren rock dam, gives up
Stone width at dam crest 6m；
B. raw material mixes: by red mud-I, cement, flyash, gypsum, slag micropowder, citric acid, polyacrylamide, sulfuric acid
Ferrous weight percent: red mud-I 50%: cement 12%: flyash 18%: gypsum 9%: slag micropowder 4%: citric acid 2%: poly- third
Acrylamide 3%: ferrous sulfate 2% is added blender and stirs evenly, and obtains mix；
C. it fills interior wall: mix uniform ground being filled on the inside of outer slope barren rock dam, layered rolling, every layer of the bed of material
Height 550mm, interior wall width at dam crest 11m, cofferdam and land water front surround a coastal red mud reservoir；
(3) red mud pilling, comprising:
A. raw material mixes: by red mud-II, clay weight percent: red mud-II 93%: clay 7% is uniformly mixed, and is obtained
Heap material stock；
B. it stores up: heap material stock is paved in coastal red mud reservoir, layered rolling, every thickness degree 900mm, until filling up red mud
Library.
Embodiment 3
A kind of method of red mud cofferdam sea reclamation, comprising the following steps:
(1) red mud pre-processes, comprising:
Cofferdam red mud-I: the oxalic acid of red mud amount of solid 20% is added to the concentration 45% discharged after alumina producer washing concentrating
Red mud in, stir evenly, react 2h, neutralize red mud in alkali, obtain the cofferdam PH=7.1 red mud-I；
Stockpiling red mud-II: seawater being added in the red mud for the concentration 45% discharged after alumina producer washing concentrating, is carried out
It sizes mixing, concentration is 10% after sizing mixing, and the polymeric ferric sulfate flocculant of red mud amount of solid 1% is then added, again by lotion thickener
Secondary concentration obtains the red mud lotion of underflow density 55%, then by red mud lotion by the filters pressing of mode filter press, obtain containing PH=
8.0, stockpiling red mud-II of water rate 30%, the overflow of lotion thickener and mode filter press are directly discharged into marine；
(2) artificial cofferdam, comprising:
A. barren rock throwing: the form throwing barren rock combined using excavator with dump truck fills outer slope barren rock dam, gives up
Stone width at dam crest 7m；
B. raw material mixes: by red mud-I, cement, flyash, gypsum, slag micropowder, citric acid, polyacrylamide, sulfuric acid
Ferrous weight percent: red mud-I 55%: cement 15%: flyash 15%: gypsum 8%: slag micropowder 3%: citric acid 1%: poly- third
Acrylamide 2%: ferrous sulfate 1% is added blender and stirs evenly, and obtains mix；
C. it fills interior wall: mix uniform ground being filled on the inside of outer slope barren rock dam, layered rolling, every layer of the bed of material
Height 600mm, interior wall width at dam crest 10m, cofferdam and land water front surround a coastal red mud reservoir；
(3) red mud pilling, comprising:
A. raw material mixes: by red mud-II, clay weight percent: red mud-II 95%: clay 5% is uniformly mixed, and is obtained
Heap material stock；
B. it stores up: heap material stock is paved in coastal red mud reservoir, layered rolling, every thickness degree 800mm, until filling up red mud
Library.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method of red mud cofferdam sea reclamation, comprising the following steps:
(1) red mud pre-processes, comprising:
Cofferdam red mud-I: oxalic acid being added in former red mud, is stirred evenly, and reacts 1h ~ 2h, is neutralized the alkali in red mud, is enclosed
Weir red mud-I, oxalic acid additive amount are the 15% ~ 20% of red mud amount of solid；
Stockpiling red mud-II: seawater being added in former red mud, is sized mixing, and concentration is 10% ~ 20% after sizing mixing, and is then added red
The polymeric ferric sulfate flocculant of mud amount of solid 0.5% ~ 1% is concentrated again by lotion thickener, obtains underflow density 55% ~ 60%
Red mud lotion obtain stockpiling red mud-II of moisture content 25% ~ 30% then by red mud lotion by the filters pressing of mode filter press,
The overflow of lotion thickener and mode filter press is directly discharged into marine；
(2) artificial cofferdam, comprising:
A. barren rock throwing: the form throwing barren rock combined using excavator with dump truck fills slope protection barren rock dam；
B. raw material mixes: by red mud-I, cement, flyash, gypsum, slag micropowder, citric acid, polyacrylamide, ferrous sulfate
Weight percent: red mud-I 45% ~ 55%: cement: 10% ~ 15%: flyash 15% ~ 20%: gypsum 8% ~ 10%: slag micropowder 3% ~
5%: citric acid 1% ~ 3%: polyacrylamide 2% ~ 4%: ferrous sulfate 1% ~ 3% is added blender and stirs evenly, and obtains mix；
C. it fills interior wall: mix uniform ground being filled on the inside of slope protection barren rock dam, layered rolling, every layer of bed depth
No more than 600mm, cofferdam and land water front surround a coastal red mud reservoir；
(3) red mud pilling, comprising:
A. raw material mixes: by red mud-II, clay weight percent: red mud-II 90% ~ 95%: clay 5% ~ 10% is uniformly mixed,
Obtain heap material stock；
B. it stores up: heap material stock is paved in coastal red mud reservoir, layered rolling, every thickness degree 800mm ~ 1000mm, until filling up
Red mud reservoir.
2. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that the step (1) is former
Red mud is the red mud slurry for the concentration 40% ~ 45% discharged after alumina producer washing concentrating.
3. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that the step (1) is enclosed
- I PH < 8.0 of weir red mud.
4. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that step (1) heap
Deposit-II PH < 9.0 of red mud, moisture content 25% ~ 30%.
5. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that step (2) people
Work cofferdam is completed during seawater ebb.
6. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that the step A barren rock
Granularity is greater than 300mm.
7. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that the step A slope protection
Barren rock width at dam crest is greater than 5m.
8. a kind of method of red mud cofferdam sea reclamation according to claim 1, which is characterized in that the step C interior wall
Width at dam crest is greater than 10m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711445540.0A CN108086337B (en) | 2017-12-27 | 2017-12-27 | A kind of method of red mud cofferdam sea reclamation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711445540.0A CN108086337B (en) | 2017-12-27 | 2017-12-27 | A kind of method of red mud cofferdam sea reclamation |
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| CN108086337A CN108086337A (en) | 2018-05-29 |
| CN108086337B true CN108086337B (en) | 2019-08-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760464A (en) * | 2005-11-15 | 2006-04-19 | 山东铝业股份有限公司 | Method for building a dam through solidifying red mud rapidly |
| CN1944295A (en) * | 2006-10-24 | 2007-04-11 | 沈阳铝镁设计研究院 | Stacking method for red mud |
| CN101624267A (en) * | 2009-08-11 | 2010-01-13 | 山西鑫秀工矿废渣利用有限公司 | Low-temperature ceramic curing agent of red mud from Bayer process |
| CN101671986A (en) * | 2009-08-11 | 2010-03-17 | 山西鑫秀工矿废渣利用有限公司 | Road material produced by using Bayer process red mud |
| CN101672037A (en) * | 2009-08-11 | 2010-03-17 | 山西鑫秀工矿废渣利用有限公司 | Bayer process red mud solidified damming and piling method |
-
2017
- 2017-12-27 CN CN201711445540.0A patent/CN108086337B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760464A (en) * | 2005-11-15 | 2006-04-19 | 山东铝业股份有限公司 | Method for building a dam through solidifying red mud rapidly |
| CN1944295A (en) * | 2006-10-24 | 2007-04-11 | 沈阳铝镁设计研究院 | Stacking method for red mud |
| CN101624267A (en) * | 2009-08-11 | 2010-01-13 | 山西鑫秀工矿废渣利用有限公司 | Low-temperature ceramic curing agent of red mud from Bayer process |
| CN101671986A (en) * | 2009-08-11 | 2010-03-17 | 山西鑫秀工矿废渣利用有限公司 | Road material produced by using Bayer process red mud |
| CN101672037A (en) * | 2009-08-11 | 2010-03-17 | 山西鑫秀工矿废渣利用有限公司 | Bayer process red mud solidified damming and piling method |
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