CN103787392B - Method for producing aluminium oxide by using clinker dissolving-out liquid subjected to lime desilicication treatment - Google Patents
Method for producing aluminium oxide by using clinker dissolving-out liquid subjected to lime desilicication treatment Download PDFInfo
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- CN103787392B CN103787392B CN201410048605.8A CN201410048605A CN103787392B CN 103787392 B CN103787392 B CN 103787392B CN 201410048605 A CN201410048605 A CN 201410048605A CN 103787392 B CN103787392 B CN 103787392B
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- 239000007788 liquid Substances 0.000 title claims abstract description 87
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 22
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 22
- 239000004571 lime Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000011282 treatment Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 66
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 32
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 235000019738 Limestone Nutrition 0.000 claims abstract description 5
- 239000006028 limestone Substances 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 75
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 75
- 230000029087 digestion Effects 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 7
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 4
- 238000009414 blockwork Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 18
- 239000000377 silicon dioxide Substances 0.000 abstract description 10
- 239000008267 milk Substances 0.000 abstract 2
- 210000004080 milk Anatomy 0.000 abstract 2
- 235000013336 milk Nutrition 0.000 abstract 2
- 238000011978 dissolution method Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 240000006909 Tilia x europaea Species 0.000 description 11
- 238000000354 decomposition reaction Methods 0.000 description 3
- 210000000582 semen Anatomy 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229960001866 silicon dioxide Drugs 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 240000007313 Tilia cordata Species 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a method for producing aluminium oxide by using clinker dissolving-out liquid subjected to lime desilicication treatment. The method is characterized in that the desilicication treatment is carried out in a reactor by adding lime milk to the clinker dissolving-out liquid which is obtained after aluminum oxide in aluminum oxide clinker is dissolved out by adopting an alkali dissolution method, so that sodium aluminate fine liquid is obtained, the control on the alumina-silica ratio of the sodium aluminate fine liquid is realized by controlling the addition manner of the lime milk, and the aluminium oxide clinker is prepared by sintering pulverized fuel ash and limestone. After desilicication is carried out by adopting the method, the alumina-silica ratio of the sodium aluminate fine liquid can reach 800-1000. The method is simple and practicable in the whole technological process; no poisonous and harmful gas is emitted, and therefore, the method has relatively good industrial application prospect.
Description
Technical field
The present invention relates to a kind of sintering process and produce aluminum oxide desilication method, especially utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide.
Background technology
Desiliconization is the important procedure that sintering process produces in alumina process, and as in sintering process for alumina production, the sodium aluminate solution of grog after stripping needs to set up independent desiliconization process to meet the requirement of carbonization decomposition to solution A/S.Desiliconization process is exactly in fact make the water glass being in state of saturation in solution be converted into the less compound precipitation of solubleness to separate out, sodium aluminate solution after desiliconization treatment and purification, production is referred to as seminal fluid, the degree of purification of the silicon-dioxide after desiliconization in solution usually with sodium aluminate solution the concentration ratio of salic and silicon-dioxide and alumina silica ratio A/S represent.When concentration one timing of aluminum oxide in seminal fluid, in A/S higher expression solution, the content of silicon-dioxide is lower, and desiliconization effect is better.In sintering process is produced, the rate of decomposition of sodium aluminate solution and the quality of product aluminium hydroxide, depend primarily on the alumina silica ratio of solution, when decomposing the high seminal fluid of alumina silica ratio index, under the prerequisite ensureing product aluminium hydroxide quality, very high carbon point rate of decomposition can be obtained, namely can reduce the aluminum oxide internal circulating load returned with carbon mother liquid, therefore, the alumina silica ratio of raising and stable sodium aluminate solution plays an important role to the quality of product aluminum oxide and content.
Summary of the invention
The present invention has designed and developed the method utilizing lime desiliconization process Clinker digestion liquid to produce aluminum oxide.The present invention adopts a kind of reactor to carry out desiliconization process to thick liquid interpolation milk of lime, realizes the control to A/S by the feed postition and add-on controlling milk of lime.
Technical scheme provided by the invention is:
Utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide, comprise the following steps:
Step one, the aluminum oxide adopted in alkali solution technique stripping alumina clinker, obtain Clinker digestion liquid, using Clinker digestion liquid as thick liquid, described alumina clinker is the alumina clinker utilizing flyash and limestone sintering to prepare;
Step 2, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, described reactor is vertically placed, the inside of described reactor is separated into two portions of coaxial distribution by a cylindrical parts, wherein to be positioned at middle part for first part, to be positioned at outer field part for second section, second section is coated on the outside of first part, second section is also connected with thick liquid opening for feed, reactor also has milk of lime feed pieces, described milk of lime feed pieces comprises a vertical pipeline section, first horizontal pipeline section and the second horizontal pipeline section, described vertical pipeline section is arranged on the axis of reactor, enter to the top of second section by the outside of described reactor and run through first part, the end of described vertical pipeline section is positioned at the bottom of second section, first horizontal pipeline section is communicated with vertical pipeline section, and be positioned at the top of second section, second horizontal pipeline section is communicated with described vertical pipeline section, and be positioned at the bottom of second section, first horizontal pipeline section and the second horizontal pipeline section are respectively arranged with the first feed valve and the second feed valve, the inside of first part is provided with heater block, the bottom of described reactor has discharge port, described reactor with can opposed vertical axle rotate mode be arranged on a support body, described reactor is connected to a motor, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, its detailed process is: be fed through in second section by thick liquid opening for feed by thick liquid, and while adding thick liquid, also add milk of lime by milk of lime feed pieces to second section, and the first feed valve and the second feed valve are set, the flow of the milk of lime added by the first horizontal pipeline section is made to be less than the flow of the milk of lime added by the second horizontal pipeline section, while adding thick liquid and milk of lime, heater block works, thick liquid in heating second section and the mixture of milk of lime, motor also drives reactor to rotate, thus play the stirring action of the mixture to the thick liquid in second section and milk of lime, reaction end obtains sodium aluminate concentrate solution.
Preferably, the flow of the milk of lime added by the first horizontal pipeline section is 0.3 ~ 0.7 of the flow of the milk of lime added by the second horizontal pipeline section.
Preferably, the flow of the milk of lime added by the first horizontal pipeline section is 0.5 of the flow of the milk of lime added by the second horizontal pipeline section.
Preferably, the Heating temperature of described heater block is 90 ~ 100 DEG C.
Preferably, filter plate is provided with between the bottom of described reactor and discharge port.
Preferably, described filter plate is provided with filter opening.
The method utilizing lime desiliconization process Clinker digestion liquid to produce aluminum oxide of the present invention, there is following beneficial effect: the present invention adopts a kind of reactor to carry out desiliconization process to thick liquid interpolation milk of lime, is realized the control of the alumina silica ratio to sodium aluminate concentrate solution by the addition manner controlling milk of lime.Through experimental verification, reacted A/S can reach 800-1000.
The method utilizing lime desiliconization process Clinker digestion liquid to produce aluminum oxide of the present invention, there is following beneficial effect: the present invention adopts a kind of reactor to carry out desiliconization process to thick liquid interpolation milk of lime, the control to A/S is realized by the feed postition and add-on controlling milk of lime, through experimental verification, reacted A/S ratio can reach 800-1000.
Accompanying drawing explanation
Fig. 1 is the structural representation of reactor of the present invention.
Being labeled as in accompanying drawing:
1-reactor first part, 2-reactor second section, 3-heater block, 4-discharge port, 5-milk of lime feed pieces, the horizontal pipeline section of 6-first, the horizontal pipeline section of 7-second, the thick liquid opening for feed of 8-, the vertical pipeline section of 9-, 10-first feed valve, 11-second feed valve, 12-filter plate.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide, comprise the following steps:
Step one, the aluminum oxide adopted in alkali solution technique stripping alumina clinker, obtain Clinker digestion liquid, using Clinker digestion liquid as thick liquid, described alumina clinker is the alumina clinker utilizing flyash and limestone sintering to prepare;
Step 2, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, described reactor is vertically placed, the inside of described reactor is separated into two portions of coaxial distribution by a cylindrical parts, wherein to be positioned at middle part for first part 1, to be positioned at outer field part for second section 2, second section is coated on the outside of first part 1, second section is also connected with thick liquid opening for feed 8, reactor also has milk of lime feed pieces 5, described milk of lime feed pieces 5 comprises a vertical pipeline section 9, first horizontal pipeline section 6 and the second horizontal pipeline section 7, described vertical pipeline section 9 is arranged on the axis of reactor, enter to the top of second section 2 by the outside of described reactor and run through first part, the end of described vertical pipeline section 9 is positioned at the bottom of second section 2, first horizontal pipeline section 6 is communicated with vertical pipeline section 9, and be positioned at the top of second section 2, second horizontal pipeline section 7 is communicated with described vertical pipeline section 9, and be positioned at the bottom of second section 2, first horizontal pipeline section 6 and the second horizontal pipeline section 7 are respectively arranged with the first feed valve and the second feed valve, the inside of first part is provided with heater block 3, the bottom of described reactor has discharge port 4, described reactor with can opposed vertical axle rotate mode be arranged on a support body, described reactor is connected to a motor, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, its detailed process is: thick liquid to be fed through in second section 2 by thick liquid opening for feed 8, and while adding thick liquid, also add milk of lime by milk of lime feed pieces 5 to second section 2, and the first feed valve 10 and the second feed valve 11 is set, make the flow being less than the milk of lime added by the second horizontal pipeline section 7 by the flow of the first level pipe 6 sections of milk of limes added, while adding thick liquid and milk of lime, heater block 3 works, thick liquid in heating second section 2 and the mixture of milk of lime, motor also drives reactor to rotate, thus play the stirring action of the mixture to the thick liquid in second section 2 and milk of lime, reaction end obtains sodium aluminate concentrate solution.
The described lime desiliconization process Clinker digestion liquid that utilizes is produced in the method for aluminum oxide, and the flow of the milk of lime added by the first horizontal pipeline section 6 is 0.3 ~ 0.7 of the flow of the milk of lime added by the second horizontal pipeline section 7.
The described lime desiliconization process Clinker digestion liquid that utilizes is produced in the method for aluminum oxide, and the flow of the milk of lime added by the first horizontal pipeline section 6 is 0.5 of the flow of the milk of lime added by the second horizontal pipeline section 7.
The described lime desiliconization process Clinker digestion liquid that utilizes is produced in the method for aluminum oxide, and the Heating temperature of described heater block 3 is 90 ~ 100 DEG C.
The described lime desiliconization process Clinker digestion liquid that utilizes is produced in the method for aluminum oxide, being provided with filter plate 12, for filtering reacted product, obtaining sodium aluminate concentrate solution between the bottom of described reactor and discharge port.
The described lime desiliconization process Clinker digestion liquid that utilizes is produced in the method for aluminum oxide, and described filter plate 12 is provided with filter opening.
In specific implementation process, thick liquid enters into described reactor second section 2 from described thick liquid opening for feed 8, simultaneously, milk of lime enters into described reactor second section 2 by described milk of lime feed pieces 5, because the thick liquid hold-up bottom described reactor second section 2 is more, in order to make thick liquid and milk of lime mixing evenly, it is more abundant that reaction is carried out, desiliconization is more thorough, therefore, the milk of lime flow added is controlled by described first feed valve 10 and the second feed valve 11, the flow of the milk of lime added by described first horizontal pipeline section 6 is made to be less than the flow of the milk of lime added by described second horizontal pipeline section 7, while adding thick liquid and milk of lime, the mixture of described heater block 3 to the thick liquid in described reactor second section 2 and milk of lime heats, motor drives described reactor to rotate and stirs the thick liquid in second section 2 in described reactor and milk of lime mixture, the sodium aluminate solution of desiliconization is obtained after reaction terminates.Make after filtration in backward solution and pass into carbon dioxide, adopt series carbon precipitation technology, carbonating is carried out to solution, and obtain the finished product aluminium hydroxide of high-quality after filtration, obtained aluminum oxide finished product after roasting.Alumina clinker is the alumina clinker utilizing flyash and limestone sintering to prepare.
Below provide embodiment, embodiment is only used as to be described summary of the invention, but is not limited to following examples.
Embodiment one
Thick liquid 30L is joined in reactor second section by thick liquid opening for feed, simultaneously, milk of lime is joined in reactor second section by milk of lime feed pieces, controlled by the first feed valve, the amount of the milk of lime added by the first horizontal pipeline section is made to be 3L, controlled by the second feed valve, the amount of the milk of lime added by the second horizontal pipeline section is made to be 10L, while adding thick liquid and milk of lime, the mixture of heater block to the thick liquid in reactor second section and milk of lime heats, Heating temperature is set as 90 DEG C, desiliconization time 3 hours, motor drives institute's reactor to rotate and stirs the thick liquid in second section in reactor and milk of lime mixture, the sodium aluminate concentrate solution A/S obtaining desiliconization after reaction terminates reaches 850.Make after filtration in backward solution and pass into carbon dioxide, adopt series carbon precipitation technology, carbonating is carried out to solution, and obtain the finished product aluminium hydroxide of high-quality after filtration, obtained aluminum oxide finished product after roasting.
Embodiment two
Thick liquid 35L is joined in reactor second section by thick liquid opening for feed, simultaneously, milk of lime is joined in reactor second section by milk of lime feed pieces, controlled by the first feed valve, the amount of the milk of lime added by the first horizontal pipeline section is made to be 5L, controlled by the second feed valve, the amount of the milk of lime added by the second horizontal pipeline section is made to be 10L, while adding thick liquid and milk of lime, the mixture of heater block to the thick liquid in reactor second section and milk of lime heats, Heating temperature is set as 95 DEG C, desiliconization time 3 hours, motor drives institute's reactor to rotate and stirs the thick liquid in second section in reactor and milk of lime mixture, the sodium aluminate concentrate solution A/S obtaining desiliconization after reaction terminates reaches 850.Make after filtration in backward solution and pass into carbon dioxide, adopt series carbon precipitation technology, carbonating is carried out to solution, and obtain the finished product aluminium hydroxide of high-quality after filtration, obtained aluminum oxide finished product after roasting.
Embodiment three
Thick liquid 40L is joined in reactor second section by thick liquid opening for feed, simultaneously, milk of lime is joined in reactor second section by milk of lime feed pieces, controlled by the first feed valve, the amount of the milk of lime added by the first horizontal pipeline section is made to be 7L, controlled by the second feed valve, the amount of the milk of lime added by the second horizontal pipeline section is made to be 10L, while adding thick liquid and milk of lime, the mixture of heater block to the thick liquid in reactor second section and milk of lime heats, Heating temperature is set as 95 DEG C, desiliconization time 3 hours, motor drives institute's reactor to rotate and stirs the thick liquid in second section in reactor and milk of lime mixture, the sodium aluminate concentrate solution A/S obtaining desiliconization after reaction terminates reaches 850.Make after filtration in backward solution and pass into carbon dioxide, adopt series carbon precipitation technology, carbonating is carried out to solution, and obtain the finished product aluminium hydroxide of high-quality after filtration, obtained aluminum oxide finished product after roasting.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (6)
1. utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide, it is characterized in that, comprise the following steps:
Step one, the aluminum oxide adopted in alkali solution technique stripping alumina clinker, obtain Clinker digestion liquid, using Clinker digestion liquid as thick liquid, described alumina clinker is the alumina clinker utilizing flyash and limestone sintering to prepare;
Step 2, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, described reactor is vertically placed, the inside of described reactor is separated into two portions of coaxial distribution by a cylindrical parts, wherein to be positioned at middle part for first part, to be positioned at outer field part for second section, second section is coated on the outside of first part, second section is also connected with thick liquid opening for feed, reactor also has milk of lime feed pieces, described milk of lime feed pieces comprises a vertical pipeline section, first horizontal pipeline section and the second horizontal pipeline section, described vertical pipeline section is arranged on the axis of reactor, enter to the top of second section by the outside of described reactor and run through first part, the end of described vertical pipeline section is positioned at the bottom of second section, first horizontal pipeline section is communicated with vertical pipeline section, and be positioned at the top of second section, second horizontal pipeline section is communicated with described vertical pipeline section, and be positioned at the bottom of second section, first horizontal pipeline section and the second horizontal pipeline section are respectively arranged with the first feed valve and the second feed valve, the inside of first part is provided with heater block, the bottom of described reactor has discharge port, described reactor with can opposed vertical axle rotate mode be arranged on a support body, described reactor is connected to a motor, reactor is adopted to carry out desiliconization process to the thick liquid that step one obtains, its detailed process is: be fed through in second section by thick liquid opening for feed by thick liquid, and while adding thick liquid, also add milk of lime by milk of lime feed pieces to second section, and the first feed valve and the second feed valve are set, the flow of the milk of lime added by the first horizontal pipeline section is made to be less than the flow of the milk of lime added by the second horizontal pipeline section, while adding thick liquid and milk of lime, heater block works, thick liquid in heating second section and the mixture of milk of lime, motor also drives reactor to rotate, thus play the stirring action of the mixture to the thick liquid in second section and milk of lime, reaction end obtains sodium aluminate concentrate solution, make after filtration in backward solution and pass into carbon dioxide, adopt series carbon precipitation technology, carbonating is carried out to solution, and obtain the finished product aluminium hydroxide of high-quality after filtration, obtained aluminum oxide finished product after roasting.
2. utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide as claimed in claim 1, it is characterized in that, the flow of the milk of lime added by the first horizontal pipeline section is 0.3 ~ 0.7 of the flow of the milk of lime added by the second horizontal pipeline section.
3. utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide as claimed in claim 1, it is characterized in that, the flow of the milk of lime added by the first horizontal pipeline section is 0.5 of the flow of the milk of lime added by the second horizontal pipeline section.
4. utilize lime desiliconization process Clinker digestion liquid to produce the method for aluminum oxide as claimed in claim 1, it is characterized in that, the Heating temperature of described heater block is 90 ~ 100 DEG C.
5. the method utilizing lime desiliconization process Clinker digestion liquid to produce aluminum oxide according to claim 1, is characterized in that, be provided with filter plate between the bottom of described reactor and discharge port.
6. the method utilizing lime desiliconization process Clinker digestion liquid to produce aluminum oxide according to claim 5, is characterized in that, described filter plate is provided with filter opening.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410048605.8A CN103787392B (en) | 2014-02-12 | 2014-02-12 | Method for producing aluminium oxide by using clinker dissolving-out liquid subjected to lime desilicication treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410048605.8A CN103787392B (en) | 2014-02-12 | 2014-02-12 | Method for producing aluminium oxide by using clinker dissolving-out liquid subjected to lime desilicication treatment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416407A1 (en) * | 1974-04-04 | 1975-10-16 | Chemokomplex Vegyipari Gep Es | PROCESS FOR THE RECOVERY OF METAL OXIDES FROM ALITIC, SIALITIC STONES OR. MINERALS AND / OR BY-PRODUCTS OF THE INDUSTRY |
| CN1057442A (en) * | 1990-06-19 | 1992-01-01 | 山东铝厂 | A kind of production method of aluminium hydroxide used as filling material |
| CN101734694A (en) * | 2008-11-17 | 2010-06-16 | 贵阳铝镁设计研究院 | Method for excluding sodium oxalate and carbonate from Bayer process solution by adopting ultra-concentration method |
-
2014
- 2014-02-12 CN CN201410048605.8A patent/CN103787392B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2416407A1 (en) * | 1974-04-04 | 1975-10-16 | Chemokomplex Vegyipari Gep Es | PROCESS FOR THE RECOVERY OF METAL OXIDES FROM ALITIC, SIALITIC STONES OR. MINERALS AND / OR BY-PRODUCTS OF THE INDUSTRY |
| CN1057442A (en) * | 1990-06-19 | 1992-01-01 | 山东铝厂 | A kind of production method of aluminium hydroxide used as filling material |
| CN101734694A (en) * | 2008-11-17 | 2010-06-16 | 贵阳铝镁设计研究院 | Method for excluding sodium oxalate and carbonate from Bayer process solution by adopting ultra-concentration method |
Non-Patent Citations (1)
| Title |
|---|
| 杨重愚.铝酸钠溶液的脱硅工艺.《氧化铝生产工艺学》.1993,第226-266页. * |
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Inventor after: Ma Shanli Inventor after: Li Zhongying Inventor after: Gao Haijun Inventor after: Bai Jingfeng Inventor after: Zhang Yaohua Inventor after: Luo Yonghu Inventor after: Hao Yaojin Inventor after: Liu Zengquan Inventor after: Li Jun Inventor after: Ren Hao Inventor after: Yang Zhiwei Inventor after: Ji Changgui Inventor after: Wang Dongping Inventor before: Ma Shanli Inventor before: Li Zhongying Inventor before: Gao Haijun Inventor before: Bai Jingfeng Inventor before: Luo Yonghu Inventor before: Zhang Yaohua Inventor before: Hao Yaojin Inventor before: Liu Zengquan Inventor before: Li Jun Inventor before: Ren Hao Inventor before: Yang Zhiwei Inventor before: Ji Changgui Inventor before: Wang Dongping |
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Free format text: CORRECT: INVENTOR; FROM: MA SHANLI ZHANG YAOHUA HAO YAOJIN LIU ZENGQUAN LI JUN REN HAO YANG ZHIWEI JI CHANGGUI WANG DONGPING LI ZHONGYING GAO HAIJUN BAI JINGFENG LUO YONGHU TO: MA SHANLI LUO YONGHU HAO YAOJIN LIU ZENGQUAN LI JUN REN HAO YANG ZHIWEI JI CHANGGUI WANG DONGPING LI ZHONGYING GAO HAIJUN BAI JINGFENG ZHANG YAOHUA |
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Denomination of invention: Production of alumina by lime desilication treatment of clinker leaching liquor Effective date of registration: 20200807 Granted publication date: 20150204 Pledgee: Ordos Rural Commercial Bank Co.,Ltd. Pledgor: INNER MONGOLIA MENGXI ORDOS ALUMINUM Co.,Ltd. Registration number: Y2020150000040 |
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Date of cancellation: 20200814 Granted publication date: 20150204 Pledgee: Ordos Rural Commercial Bank Co.,Ltd. Pledgor: INNER MONGOLIA MENGXI ORDOS ALUMINUM Co.,Ltd. Registration number: Y2020150000040 |
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Denomination of invention: Production of alumina by lime desilication treatment of clinker leaching liquor Effective date of registration: 20200818 Granted publication date: 20150204 Pledgee: Ordos Rural Commercial Bank Co.,Ltd. Pledgor: INNER MONGOLIA MENGXI ORDOS ALUMINUM Co.,Ltd. Registration number: Y2020150000042 |
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Granted publication date: 20150204 Pledgee: Ordos Rural Commercial Bank Co.,Ltd. Pledgor: INNER MONGOLIA MENGXI ORDOS ALUMINUM CO.,LTD. Registration number: Y2020150000042 |