CN100377999C - Method for preparing solid sodium aluminate - Google Patents
Method for preparing solid sodium aluminate Download PDFInfo
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- CN100377999C CN100377999C CNB2006100448780A CN200610044878A CN100377999C CN 100377999 C CN100377999 C CN 100377999C CN B2006100448780 A CNB2006100448780 A CN B2006100448780A CN 200610044878 A CN200610044878 A CN 200610044878A CN 100377999 C CN100377999 C CN 100377999C
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- Prior art keywords
- sodium aluminate
- solid sodium
- controlled
- concentrated solution
- reaction
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- 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.)
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- 239000007787 solid Substances 0.000 title claims abstract description 35
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910001388 sodium aluminate Inorganic materials 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000001035 drying Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 43
- 239000000243 solution Substances 0.000 claims description 37
- 210000000582 semen Anatomy 0.000 claims description 26
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000012752 auxiliary agent Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 11
- 230000035484 reaction time Effects 0.000 claims description 10
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 9
- 239000000376 reactant Substances 0.000 claims description 9
- 206010039509 Scab Diseases 0.000 claims description 8
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 229910001570 bauxite Inorganic materials 0.000 claims description 7
- 150000004684 trihydrates Chemical class 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000003513 alkali Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000000746 purification Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 2
- 229910001679 gibbsite Inorganic materials 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 13
- 239000012141 concentrate Substances 0.000 description 8
- 239000002699 waste material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 6
- 229910001948 sodium oxide Inorganic materials 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- VCNTUJWBXWAWEJ-UHFFFAOYSA-J aluminum;sodium;dicarbonate Chemical compound [Na+].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O VCNTUJWBXWAWEJ-UHFFFAOYSA-J 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910001647 dawsonite Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention relates to an improved method for preparing solid sodium aluminate. Coarse solution is obtained by the reaction between gibbsite and alkali liquid, refined solution of the reaction is obtained by purification, and product is obtained by drying the refined solution of the reaction by spraying. The present invention has the advantages of high product quality, good adaptability of the material, and easy mass production for industrialization.
Description
Technical field
The present invention relates to a kind of preparation method of improved solid sodium aluminate.
Background technology
Solid sodium aluminate of the present invention mainly can use inhibitor, steel surface treatment protective material as water treatment scavenging agent, fine papers shaping auxiliary agent and cement and casting with accelerating chemicals, agate and pottery, also transforms the raw material of using molecular catalyst as amorphous alumina catalyzer and petroleum hydrocarbon.
The difference of solid sodium aluminate series product physical and chemical performance, mainly be because the difference of production technique causes, it is exactly difference in indexs such as adaptability to raw material, granularity, instantly-soluble, insolubles, stability that the difference of production technique causes the difference of product maximum.
At present the production technique of solid sodium aluminate can be divided into sintering method, crystallization process substantially, append alkali solution technique, the double salt decomposition method.
Sintering method: get industrial Al (OH)
3Or Al
2O
3With addition of Na
2CO
3, at 1000-1100 ℃, reaction generates solid sodium aluminate.But practice shows, is difficult to accomplish that both react completely by mixing, and water-fast Na is always arranged
2O.11Al
2O
3Generate.
Crystallization process: with industrial Al (OH)
3Be dissolved in Na
2O
kIn the alkali lye of 500g/l, obtain the solution of α k=10 earlier, be cooled to crystallization below 45 ℃ then and separate out Na
2O.Al
2O
32.5H
2O.But the shortcoming of this method is removal attached liquid concentrated base and crystal water rather to bother.
Append alkali solution technique: under normal pressure, adopt the mode of appending.Aluminium hydroxide is repeatedly thrown in the alkali lye that is stirring, and the generation that the solution boiling point is accompanied by sodium aluminate solution raises gradually, i.e. rising by the solution boiling point improves synthesis under normal pressure concentration, generates sodium aluminate under wet type high temperature.The liquid sodium aluminate that hypsokinesis goes out is finished in reaction, obtains finished product through solidifying, pulverizing.The technical conceive cleverness of this method, under normal pressure electric heating,, realized that high pressure steam all is difficult to the temperature of reaction that realizes by the elevation of boiling point, but in the difficulty of controlling that stirs, inclines and, be difficult to industrial production in batches, and the insolubles severe overweight in this method products obtained therefrom.
The double salt decomposition method: a considerable amount of aluminum oxide, sodium oxide are contained in sintering process carbon mother liquid the inside.Make the dawsonite that is commonly called as double salt through complete carbonating decomposition, water and carbonic acid gas are sloughed in roasting, just get solid sodium aluminate.But its product index instantly-soluble descends, insolubles increases, and can not adapt to customer requirements.
Above-mentioned several mode respectively has relative merits, and quality product differs from one another, but the ubiquity quality product is low, and is difficult to carry out the shortcoming of industrialized production, adaptability to raw material difference.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of improved solid sodium aluminate, the quality product height, adaptability to raw material is good, carries out industrialized batch easily and produces greatly.
The preparation method of solid sodium aluminate of the present invention, by contain al reactant and liquid base react thick liquid, after purifying treatment, obtain reacting seminal fluid, will react seminal fluid and carry out spraying drying and get product.Wherein, containing al reactant is a kind of in bauxite trihydrate, three water type aluminium hydroxides or the aluminum hydroxide scab or several arbitrary proportion mixture arbitrarily.
Among the present invention:
Purifying treatment purifies auxiliary agent with milk of lime or gac etc. and handles, and what can carry out handle, and obtains better purifying treatment effect, and the add-on that purifies auxiliary agent is the 5～15%, 5～10% better of thick liquid weight, and 6～8% is best.
The reaction ratio factor alpha k (being sodium oxide and the mol ratio that contains aluminum oxide in the al reactant in the liquid base) that contains al reactant and liquid base is controlled to be 1.1～1.6, best 1.1～1.3, contain the al reactant size range and be controlled at 0～200 μ m, be preferably 0～100 μ m, be preferably 0～50 μ m, 80～150 ℃ of temperature of reaction, 1～3 hour reaction times.Bauxite trihydrate preferably requires content greater than 50%; Three water type aluminium hydroxide products can be that carbonation decomposition process is produced, and also can be that the seed decomposition method is produced, or the mixture of the three water type aluminium hydroxide products that make of these two kinds of technologies; Aluminum hydroxide scab is the aluminum hydroxide scab on cell wall or the duct wall in the alumina producing flow process.Liquid base is finished product liquid sodium hydroxide, solid sodium hydroxide with the water-soluble aqueous solution or contains the arbitrary proportion mixed solution of a kind of or three in the waste liquid in the flow process of sodium oxide.
The reaction seminal fluid preferably carries out spraying drying again after concentrating, the concentration of the concentrated solution that obtains after concentrating is controlled to be 25～45%, and 30～40% is better, is preferably 32～38%.
During spraying drying, the temperature of concentrated solution is controlled to be 70～120 ℃, is preferably 80～110 ℃; Dry inlet temperature is 200～400 ℃, is preferably 300～360 ℃; Concentrated solution discharge is controlled to be 5～15L/min, is preferably 7～12L/min.
The preferred centrifugal spraying drying of spray drying device, preferably centrifugal spraying drying is joined cyclone dust collection.
The sodium aluminate product index that the inventive method obtains sees the following form 1.
Table 1, sodium aluminate product index table
| The test batch | Al 2O 3 ％ | Na 2O ％ | NaAlO 2 ％ | SiO 2 ％ | Fe 2O 3 ％ | Other impurity | Granularity (D50) | Insolubles | Remarks | Instantly-soluble |
| 1 | 41 | 30 | ＞65 | 0.15 | 0.008 | Little | 40 | ＜0.1 | White powder | Excellent |
| 2 | 49 | 38 | 80 | 0.15 | 0.008 | Little | 50 | ＜0.1 | White powder | Excellent |
| 3 | 40 | 35 | 62 | 5.0 | 3.0 | 0.2 | 90 | ＜1 | White powder | Excellent |
| 4 | 52 | 45 | 83 | 0.1 | 0.01 | Little | 120 | ＜0.5 | White powder | Excellent |
| 5 | 45 | 35 | 72 | 4 | 3 | 0.1 | 70 | ＜0.2 | White powder | Excellent |
| 6 | 48 | 35 | 80 | 0.02 | 0.002 | Trace | 40 | ＜0.05 | White powder | Excellent |
Content wherein is weight percentage, and D50 is the meta particle diameter.
Compared with prior art, the present invention has following beneficial effect:
(1) produce the solid sodium aluminate product by adding the method that purifies auxiliary agent, product purity can reach 99.95%, good product quality.
(2) product of Production Flow Chart production accomplishes that fully size-grade distribution is adjustable, and the D50 maximum can be 150 μ m, and minimum can be 40 μ m.
(3) adopt the spraying drying mode, the granularity of the feasible sodium aluminate product of producing is well controlled, and instant functional, preferably having reached 3 seconds can dissolve in the aqueous solution fully, and insolubles content reduces, less than 0.1%.
(4) Production Flow Chart situ production does not exist dust and secondary pollution situation, can realize effective utilization of alkali waste again, does not have waste material simultaneously and gets rid of, and has really realized cleaning production.
(5) realize the serialization operation easily, be convenient to carry out large industrialized production.
(6) production is low with raw materials cost, and adaptability is good, greatly reduces production cost.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
The preparation method of solid sodium aluminate of the present invention, step is as follows:
(1) granularity is
30 μ mBauxite trihydrate 200g, with
The mass content of sodium oxide30% liquid sodium hydroxide 368ml reaction, 100 ℃ of temperature of reaction in 2 hours reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 7% of a thick liquid weight, filters to obtain seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 33%, temperature keeps 90 ℃.
(4) spraying drying control: 300 ℃ of inlet temperature, concentrated solution discharge control 9L/min carries out spraying drying to concentrated solution, obtains solid sodium aluminate product 300g.
Embodiment 2
(1) granularity is
70 μ mThree water-aluminum hydroxide 200g and solid caustic soda 200g be dissolved in the 300ml water and react, 110 ℃ of temperature of reaction in 2.5 hours reaction times, make thick liquid.
(2) in thick liquid, add activated carbon 5g, filter, obtain seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 35%, temperature keeps 85 ℃.
(4) spraying drying control: 400 ℃ of inlet temperature, concentrated solution discharge control 11L/min.Concentrated solution is carried out spraying drying, obtain solid sodium aluminate product 300g.
Embodiment 3
(1) granularity is
100 μ mThree water type aluminium hydroxides of 50% weight and the aluminum hydroxide scab (alkali content 20%) of 50% weight 200g altogether, be dissolved in the 300ml water with solid caustic soda 160g and react, simultaneously with flow process in alkali waste 100ml mixing afterreaction, 110 ℃ of temperature of reaction, in 1 hour reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 7% of a thick liquid weight, filters and obtains seminal fluid one time, adds activated carbon 5g again, filters and obtains seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 40%, temperature keeps 95 ℃.
(4) spraying drying control: inlet temperature is controlled at 350 ℃, concentrated solution discharge control 12L/min.Concentrated solution is carried out spraying drying, obtain solid sodium aluminate product 300g.
Embodiment 4
(1) granularity is 4
0 μ mThree water type aluminium hydroxides of 50% weight and the aluminum hydroxide scab (alkali content 20%) of 50% weight 220g altogether, be dissolved in the 350ml water with solid caustic soda 160g and react, simultaneously with flow process in alkali waste 100ml mixing afterreaction, 110 ℃ of temperature of reaction, in 2 hours reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 9% of a thick liquid weight, filters and obtains seminal fluid one time, adds activated carbon 5g again, filters and obtains seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 35%, temperature keeps 85 ℃.
(4) spraying drying control: inlet temperature is controlled at 350 ℃, concentrated solution discharge control 10L/min.Concentrated solution is carried out spraying drying, obtain the solid sodium aluminate product.
Embodiment 5
The preparation method of solid sodium aluminate of the present invention, step is as follows:
(1) granularity is 12
0 μ mBauxite trihydrate 200g, with
The mass content 28 of sodium oxideThe liquid sodium hydroxide 370ml reaction of %, 120 ℃ of temperature of reaction in 1.8 hours reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 10% of a thick liquid weight, filters to obtain seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 38%, temperature keeps 105 ℃.
(4) spraying drying control: 330 ℃ of inlet temperature, concentrated solution discharge control 9L/min carries out spraying drying to concentrated solution, obtains the solid sodium aluminate product.
Embodiment 6
(1) granularity is
70 μ mThree water-aluminum hydroxide 210g and solid caustic soda 210g be dissolved in the 300ml water and react, 110 ℃ of temperature of reaction in 3 hours reaction times, make thick liquid.
(2) in thick liquid, add activated carbon 5g, filter, obtain seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 42%, temperature keeps 100 ℃.
(4) spraying drying control: 380 ℃ of inlet temperature, concentrated solution discharge control 15L/min.Concentrated solution is carried out spraying drying, obtain the solid sodium aluminate product.
Embodiment 7
(1) granularity is 50
μ mThe bauxite trihydrate of three water type aluminium hydroxides, 10% weight of 45% weight and the aluminum hydroxide scab (alkali content 20%) of 45% weight 250g altogether, be dissolved in the 380ml water with solid caustic soda 180g and react, simultaneously with flow process in alkali waste 100ml mixing afterreaction, 120 ℃ of temperature of reaction, in 2 hours reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 12% of a thick liquid weight, filters and obtains seminal fluid one time, adds activated carbon 5g again, filters and obtains seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 35%, temperature keeps 95 ℃.
(4) spraying drying control: inlet temperature is controlled at 260 ℃, concentrated solution discharge control 7L/min.Concentrated solution is carried out spraying drying, obtain the solid sodium aluminate product.
Embodiment 8
(1) granularity is 130
μ mEtc. three water type aluminium hydroxides, bauxite trihydrate and the aluminum hydroxide scab 260g altogether of weight, be dissolved in solid caustic soda 120g and react in the 360ml water, and
The mass content of sodium oxide30% liquid sodium hydroxide 80ml, with alkali waste 80ml mixing afterreaction in the flow process, 110 ℃ of temperature of reaction in 2.6 hours reaction times, make thick liquid.
(2) add purification auxiliary agent milk of lime in thick liquid, add-on is 10% of a thick liquid weight, filters and obtains seminal fluid one time, adds activated carbon 5g again, filters and obtains seminal fluid.
(3) seminal fluid is concentrated, concentrate back concentrated solution concentration and be controlled to be 36%, temperature keeps 105 ℃.
(4) spraying drying control: inlet temperature is controlled at 340 ℃, concentrated solution discharge control 8L/min.Concentrated solution is carried out spraying drying, obtain the solid sodium aluminate product.
Claims (5)
1. the preparation method of a solid sodium aluminate, it is characterized in that by contain al reactant and liquid base react thick liquid, after purifying treatment, obtain reacting seminal fluid, will react seminal fluid and carry out spraying drying and get product, wherein:
Contain al reactant and be a kind of in bauxite trihydrate, three water type aluminium hydroxides or the aluminum hydroxide scab or several arbitrary proportion mixture arbitrarily;
Purifying treatment is handled with milk of lime or active carbon purifying auxiliary agent, and the add-on that purifies auxiliary agent is 5～15% of a thick liquid weight;
The reaction ratio factor alpha k that contains al reactant and liquid base is controlled to be 1.1～1.6, contains the al reactant size range and is controlled at 0～200 μ m, 80～150 ℃ of temperature of reaction, 1～3 hour reaction times;
The reaction seminal fluid carries out spraying drying again after concentrating, the concentration of the concentrated solution that obtains after concentrating is controlled to be 25～45%.
2. the preparation method of solid sodium aluminate according to claim 1, the add-on that it is characterized in that purifying auxiliary agent is 6～8% of a thick liquid weight.
3. the preparation method of solid sodium aluminate according to claim 2 is characterized in that liquid base is the finished product liquid sodium hydroxide or the water-soluble aqueous solution of solid sodium hydroxide.
4. the preparation method of solid sodium aluminate according to claim 3 is characterized in that the concentration of concentrated solution is controlled to be 32～38%.
5. the preparation method of solid sodium aluminate according to claim 4, when it is characterized in that spraying drying, the temperature of concentrated solution is controlled to be 70～120 ℃, and dry inlet temperature is 200～400 ℃, and concentrated solution discharge is controlled to be 5～15L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100448780A CN100377999C (en) | 2006-06-14 | 2006-06-14 | Method for preparing solid sodium aluminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100448780A CN100377999C (en) | 2006-06-14 | 2006-06-14 | Method for preparing solid sodium aluminate |
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| Publication Number | Publication Date |
|---|---|
| CN1872693A CN1872693A (en) | 2006-12-06 |
| CN100377999C true CN100377999C (en) | 2008-04-02 |
Family
ID=37483323
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|---|---|---|---|
| CNB2006100448780A Active CN100377999C (en) | 2006-06-14 | 2006-06-14 | Method for preparing solid sodium aluminate |
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| CN102583473A (en) * | 2012-02-16 | 2012-07-18 | 山东晶鑫晶体科技有限公司 | Production method of high-purity aluminum oxide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261958A (en) * | 1978-04-11 | 1981-04-14 | Pevzner Ilya Z | Process for the production of sodium aluminate |
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2006
- 2006-06-14 CN CNB2006100448780A patent/CN100377999C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261958A (en) * | 1978-04-11 | 1981-04-14 | Pevzner Ilya Z | Process for the production of sodium aluminate |
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|---|---|
| CN1872693A (en) | 2006-12-06 |
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