CN107344188A - Bauxite washing tail mud dry treatment and comprehensive utilization new technology - Google Patents
Bauxite washing tail mud dry treatment and comprehensive utilization new technology Download PDFInfo
- Publication number
- CN107344188A CN107344188A CN201710630050.1A CN201710630050A CN107344188A CN 107344188 A CN107344188 A CN 107344188A CN 201710630050 A CN201710630050 A CN 201710630050A CN 107344188 A CN107344188 A CN 107344188A
- Authority
- CN
- China
- Prior art keywords
- tail mud
- bauxite
- flyash
- lime
- addition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 22
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000005406 washing Methods 0.000 title claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 26
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 18
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 18
- 239000004571 lime Substances 0.000 claims abstract description 18
- 239000012065 filter cake Substances 0.000 claims abstract description 9
- 230000018044 dehydration Effects 0.000 claims abstract description 4
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000002956 ash Substances 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229940037003 alum Drugs 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of bauxite washing tail mud dry treatment and comprehensive utilization new technology, add flyash after concentration in bauxite washup tail mud or lime is modified filter-press dehydration, form dry filter cake and send mine worked-out section to fill and reclaim.The mass fraction of the lime of above-mentioned addition is less than or equal to 3 ‰, and the mass fraction of the flyash of addition is less than or equal to 10%.Using present invention process technology, the tail mud Library of wet method discharge can be saved, significantly save project investment and production run expense, the safety and environmental protection risk of production run is reduced to zero, at the same for karst landform area mine worked-out section filling and reclaim and create advantage, also a saving the disposal costs of waste residue and pulverized fuel ash, avoid its environmental pollution, relative to the washery of 1,000,000 tons of concentrate, its year more than 20,000,000 yuan of economic benefit, the technology has high economic benefit and social value.
Description
Technical field
The present invention relates to a kind of bauxite washing tail mud dry treatment and comprehensive utilization new technology, belong to bauxite technology neck
Domain.
Background technology
In aluminum oxide production process, the geological form of bauxite is broadly divided into two kinds of forms, and one kind is appositional pattern alum clay
Ore deposit, another kind are Accumulative Bauxite.Accumulative Bauxite contains substantial amounts of clay, it is generally the case that the amount of clay is alum clay
1-2 times of ore deposit, if do not done coal preparation, bauxite can not use, in the aluminium of the Guangxi in China, Yunnan and country in Southeast Asia
Tu Kuang belongs to Accumulative Bauxite substantially.
In the Guangxi in China and Yunnan Ji great alumina producings enterprise, arranged using washing process, tail mud using wet method
Put, using wet method discharge great amount of investment must be spent to build tail mud storehouse, its operating cost is also very high.Due to the geology of this area
Form belongs to karst landforms, and there are substantial amounts of solution cavity and underground river in underground, it is easy to and Lou storehouse is caused, causes farmland to destroy, river
The considerable safety environmental protection accidents such as stream pollution.In the Ji great alumina producings enterprise in Guangxi, existing more occurred it is different degrees of
Leakage storehouse phenomenon, huge safety and environmental protection pressure is brought to enterprise, while return enterprise and cause huge economic loss.With
Environmental Protection in China and require more and more higher, safety and environmental protection pressure caused by wet method discharge is increasing, if not considering discharging modes
Change, once there is larger leakage storehouse accident, enterprise will be unable to undertake safety and environmental protection accountability and huge economic loss.
The content of the invention
It is an object of the invention to provide a kind of bauxite washing tail mud dry treatment and comprehensive utilization new technology, so as to more
Improve its using effect well.
To achieve these goals, technical scheme is as follows.
A kind of bauxite washing tail mud dry treatment and comprehensive utilization new technology, in bauxite washup tail mud after concentration
Addition flyash or lime are modified filter-press dehydration, form dry filter cake and send mine worked-out section to fill and reclaim；Flyash is
The powdery waste of outer row's disposal is needed caused by aluminum oxide production process, in this technique as adding in pressure-filtering process
Add agent, both improved the press filtration performance of tail mud, while also improve filter cake soil property, filled for mine worked-out section and reclaim and create
Condition.Can also complete equipilibrium fall caused fine coal ash quantity in aluminum oxide production process, save flyash stockpiling disposal and reduce ring
Pollute in border.
Further, the mass fraction of the flyash of above-mentioned addition is less than or equal to 10%, or the mass fraction of the lime of addition
Less than or equal to 1%.
Further, the mass fraction of the flyash of above-mentioned synthesis proportioning addition is the lime less than or equal to 6% and added
Mass fraction is less than or equal to 5 ‰.
In the invention, lime and flyash are all the good drainage modifying agent of bauxite washup tail mud press filtration, add lime
Amount is more than 2 ‰, and the press filtration performance of tail mud is just more good, and with the increase of lime-crushed stone pile, the de- cake effect of filter cake is more
Substantially；The press filtration performance of the addition of flyash tail mud more than 3% is just more good, with the increase of flyash addition, filter
The de- cake effect of cake is more obvious.In order to consider overall economic efficiency, we are also pressed adding two kinds of filter aids simultaneously
Filter experiment, when lime-crushed stone pile is 1 ‰, flyash addition is 3% or so, and the press filtration performance of tail mud and de- cake performance are all more
It is preferable.In view of operating cost, the addition of lime not Gonna breakthrough 3 ‰, the addition of flyash not Gonna breakthrough 10%.
The beneficial effect of the invention is：Using present invention process technology, the tail mud Library that wet method is discharged can be saved, significantly
Project investment and production run expense are saved, the safety and environmental protection risk of production run is reduced to zero, while for karst landform
The filling of the mine worked-out section in area and reclaim and create advantage, also a saving the disposal costs of waste residue and pulverized fuel ash, avoid
Its environmental pollution, relative to the washery of 1,000,000 tons of concentrate, its year more than 20,000,000 yuan of economic benefit, the technology has high
Economic benefit and social value.
Embodiment
The embodiment of the present invention is described with reference to embodiment, to be better understood from the present invention.
Embodiment
Bauxite washing tail mud dry treatment and comprehensive utilization new technology in the embodiment of the present invention, in bauxite washup tail
Mud adds flyash after concentration or lime is modified filter-press dehydration, forms dry filter cake and send mine worked-out section to fill and answer
Cultivate；Flyash is the powdery waste that outer row's disposal is needed caused by aluminum oxide production process, in this technique as pressure
Additive during filter, had both improved the press filtration performance of tail mud, while also improved filter cake soil property, was filled for mine worked-out section
And reclaim and create condition.Can also complete equipilibrium fall caused fine coal ash quantity in aluminum oxide production process, save flyash stockpiling
Dispose and reduce environmental pollution.The mass fraction of the lime of above-mentioned addition is less than or equal to 3 ‰, the mass fraction of the flyash of addition
Less than or equal to 10%.
In the invention, lime and flyash are all the good drainage modifying agent of bauxite washup tail mud press filtration, add lime
Amount is more than 2 ‰, and the press filtration performance of tail mud is just more good, and with the increase of lime-crushed stone pile, the de- cake effect of filter cake is more
Substantially；The press filtration performance of the addition of flyash tail mud more than 3% is just more good, with the increase of flyash addition, filter
The de- cake effect of cake is more obvious.In order to consider overall economic efficiency, we are also pressed adding two kinds of filter aids simultaneously
Filter experiment, as shown in table 1, when lime-crushed stone pile is 1 ‰, flyash addition is 3% or so, the press filtration performance of tail mud and de- cake
Performance is all ideal.In view of operating cost, the addition of lime not Gonna breakthrough 3 ‰, the addition of flyash not Gonna breakthrough
10%。
Table 1：The comparison table of tail mud press filtration performance and additive
| Additive | Addition | Press filtration performance | De- cake effect | Filter cake moisture | Addition changes | Press filtration performance change |
| Lime | ≥1‰ | Preferably | Preferably | ＜ 28% | Addition increase | Performance significantly improves |
| Flyash | ≥3% | Preferably | Preferably | ＜ 28% | Addition increase | Performance improves |
| Lime+flyash | 1‰+3% | Well | Well | ＜ 28% | Addition increase | Performance significantly improves |
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as this hair
Bright protection domain.
Claims (3)
1. a kind of bauxite washing tail mud dry treatment and comprehensive utilization new technology, it is characterised in that：In bauxite washup tail mud
Flyash is added after concentration or lime is modified filter-press dehydration, is formed dry filter cake and is sent mine worked-out section to fill and answer
Cultivate.
2. bauxite washing tail mud dry treatment according to claim 1 and comprehensive utilization new technology, it is characterised in that：On
The mass fraction for stating the flyash of addition is less than or equal to 10%, or the mass fraction of the lime of addition is less than or equal to 1%.
3. bauxite washing tail mud dry treatment according to claim 1 and comprehensive utilization new technology, it is characterised in that：On
State the mass fraction of the flyash of comprehensive proportioning addition for less than or equal to 6% and the lime of addition mass fraction be less than or equal to
5‰。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630050.1A CN107344188A (en) | 2017-07-28 | 2017-07-28 | Bauxite washing tail mud dry treatment and comprehensive utilization new technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630050.1A CN107344188A (en) | 2017-07-28 | 2017-07-28 | Bauxite washing tail mud dry treatment and comprehensive utilization new technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107344188A true CN107344188A (en) | 2017-11-14 |
Family
ID=60257191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710630050.1A Pending CN107344188A (en) | 2017-07-28 | 2017-07-28 | Bauxite washing tail mud dry treatment and comprehensive utilization new technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107344188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233295A (en) * | 2020-01-29 | 2020-06-05 | 桂林理工大学 | Method for cooperatively treating excess sludge by using ore washing sludge |
| NO20200292A1 (en) * | 2020-03-11 | 2021-09-13 | Norsk Hydro As | Method and System for Long-Term Management of Bauxite Mining Tailings |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019086B1 (en) * | 1979-05-19 | 1982-12-22 | Hoechst Aktiengesellschaft | Process for producing desulfurizing agents for pig iron or steel melts |
| CN1994597A (en) * | 2006-12-29 | 2007-07-11 | 中国铝业股份有限公司 | Bauxite ore dressed and ore cleaned tailings piling method |
| CN101700523A (en) * | 2009-10-16 | 2010-05-05 | 中国铝业股份有限公司 | Method for stockpiling tailings from beneficiated bauxite |
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN103332804A (en) * | 2013-06-05 | 2013-10-02 | 云南文山铝业有限公司 | Solid-liquid separation method for tailing pulp |
| CN105583148A (en) * | 2015-12-30 | 2016-05-18 | 平顶山华兴浮选工程技术服务有限公司 | Dry ore washing and dressing method |
-
2017
- 2017-07-28 CN CN201710630050.1A patent/CN107344188A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019086B1 (en) * | 1979-05-19 | 1982-12-22 | Hoechst Aktiengesellschaft | Process for producing desulfurizing agents for pig iron or steel melts |
| CN1994597A (en) * | 2006-12-29 | 2007-07-11 | 中国铝业股份有限公司 | Bauxite ore dressed and ore cleaned tailings piling method |
| CN101700523A (en) * | 2009-10-16 | 2010-05-05 | 中国铝业股份有限公司 | Method for stockpiling tailings from beneficiated bauxite |
| CN101912865A (en) * | 2010-08-02 | 2010-12-15 | 河海大学 | Method for solidifying and dry-stacking mill tailings without tailing reservoir |
| CN103332804A (en) * | 2013-06-05 | 2013-10-02 | 云南文山铝业有限公司 | Solid-liquid separation method for tailing pulp |
| CN105583148A (en) * | 2015-12-30 | 2016-05-18 | 平顶山华兴浮选工程技术服务有限公司 | Dry ore washing and dressing method |
Non-Patent Citations (1)
| Title |
|---|
| 陈全训: "《有色金属系列丛书 中国铝业》", 31 March 2013 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233295A (en) * | 2020-01-29 | 2020-06-05 | 桂林理工大学 | Method for cooperatively treating excess sludge by using ore washing sludge |
| CN111233295B (en) * | 2020-01-29 | 2021-11-16 | 桂林理工大学 | Method for cooperatively treating excess sludge by using ore washing sludge |
| NO20200292A1 (en) * | 2020-03-11 | 2021-09-13 | Norsk Hydro As | Method and System for Long-Term Management of Bauxite Mining Tailings |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171114 |
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| RJ01 | Rejection of invention patent application after publication |