CN1031459C - Iron-removing method used in course of aluminum sulfate production - Google Patents
Iron-removing method used in course of aluminum sulfate production Download PDFInfo
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- CN1031459C CN1031459C CN 93120355 CN93120355A CN1031459C CN 1031459 C CN1031459 C CN 1031459C CN 93120355 CN93120355 CN 93120355 CN 93120355 A CN93120355 A CN 93120355A CN 1031459 C CN1031459 C CN 1031459C
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- aluminium wire
- tai
- ace
- deironing
- liquor
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to an iron removing method used for the process of aluminum sulfate production. A small amount of potassium hypermanganate and manganese sulfate solution is orderly added into pickle liquor, and the mixture settles and separates after reaction. Supernatant fluid is shifted in a container which is provided with an aluminium wire net, and pulverized coal ash after washed by acid is added to be boiled and filtered. Filter liquor is shifted in a concentration tank which is provided with the aluminium wire net to be evaporated, concentrated, cooled and crystallized, and an obtained product is a white bright good grade product. The present invention has the advantages of no change of the original production technology of aluminum sulfate, simple facilities, easy obtaining of raw materials, and obvious iron removing effect and is an effective method for enhancing the grade of the aluminum sulfate product which is produced by the existing pickling method.
Description
The present invention relates to a kind of production method of vitriol of aluminium.The method that more particularly belongs to a kind of deironing in the Tai-Ace S 150 production process.
Tai-Ace S 150 is a kind of important chemical material, purposes is very extensive, but owing to contain ferric oxide mostly in various degree in the raw material aluminum-containing mineral of production Tai-Ace S 150, the existence of these ferric oxide directly affects the quality product that existing pickling process is produced Tai-Ace S 150, has limited its purposes.For the major impurity iron in the Tai-Ace S 150 is removed, have many methods both at home and abroad, as recrystallization method, chemical precipitation method, organic solvent extractionprocess, ion exchange method etc., but these methods all need be built a cover treatment facility in addition outside existing production line, investment of production equipment is strengthened, product cost increases, and is difficult to promote the use of in the existing at home and abroad industrial production.In " chemical industry small commodity production method " (Hunan science tech publishing house), introduced a kind of method for removing iron, to produce small quantity of reagent level Tai-Ace S 150 with potassium permanganate and manganese sulfate solution processing Tai-Ace S 150 Industrial products.Its key step is with in the molten fourth pure water of industrial aluminum sulphate product, transfers pH value to 3 with aluminium hydrate powder, adds KMnO again
4And MnSO
4Solution reaction half an hour, isolate " coprecipitate " of Manganse Dioxide and ironic hydroxide, gained filtrate is little yellow, is concentrated into and to a certain degree makes the product crystallization, filters, therefrom extract the small part product, yield is very low, and these method need one cover individual curing equipment, a large amount of pure water that use in industrial production in addition, also be difficult to realize, so be not suitable for big industrial production.
The object of the present invention is to provide a kind of original Tai-Ace S 150 production technique that need not change, do not need to build in addition the reason facility, only in original production technique, do slightly to change just can implement, and investment seldom, good iron removal effect, the method for the deironing in the Tai-Ace S 150 production process that products obtained therefrom purity is high.
The method of deironing in the Tai-Ace S 150 production process provided by the present invention is characterized in that comprising the following steps:
(1) in the later stage of aluminum-containing mineral acid-leaching reaction, the control pH value is 2.0 to 3.0 o'clock, presses Fe in the aluminum-containing mineral in pickle liquor
2O
3The 0.1-2.0 of weight doubly adds the liquor potassic permanganate that concentration is 5-20%, in 80-100 ℃ of reaction 15-25 minute, doubly add the manganese sulfate solution that concentration is 5-20% by the 1.2-2.0 that adds potassium permanganate weight again, continue reaction 15-25 minute in 80-100 ℃, add then flocculant commonly used in the aluminium sulphate production, sedimentation separation.
(2) above-mentioned settlement separate supernatant liquor immigration is contained in the container of aluminium wire netting, and add the flyash after cleanup acid treatment of the 5-20% of alum liquor weight, boiled 15-25 minute, filter.
(3) immigration of above-mentioned filtrate is contained in the thickener of aluminium wire netting, evaporation concentration is cooled off to 110-120 ℃, crystallization, and products obtained therefrom is pure white sparkling and crystal-clear top grade Tai-Ace S 150.
In step (), described aluminum-containing mineral can be a bauxitic clay, coal gangue or kaolin etc.; The adding of potassium permanganate and manganese sulfate solution mainly is the Fe that makes in the reaction system
2+Be converted into Fe
3+And then generation Fe (OH)
3, potassium permanganate and manganous sulfate are converted into Manganse Dioxide, when solid-liquid is settlement separate, make Fe (OH)
3, MnO
2Be deposited on the subsider bottom together with residue, thereby make alum liquor and ironic hydroxide initial gross separation; Employed flocculation agent can be a polyacrylamide etc. during sedimentation, if use polyacrylamide, add-on makes that the polyacrylamide amine content reaches 10PPM in the sedimentation system.
Aluminium wire netting described in step (two) and (three) is the reticulation that is woven into common aluminium wire or kaolin.If with reclaiming old aluminium wire, should clean the impurity such as wipe oil before the braiding.Mesh evenly is laid on the wall through at 1-5 centimetre.Purpose is that residual iron ion is deposited on the aluminium wire by electrochemical reaction after making above-mentioned steps.After using for some time, clean twine, reuse behind the de-iron.
Flyash described in the step (two) after pickling, main absorption and the decolorization of rising in system.Its treating processes is: the fly ash in electric power plant of getting fire, adding concentration is the dilute sulphuric acid or the dilute hydrochloric acid of 10% (weight), boils 5-30 minute, filters, and is washed with water to pH value and is 5 and just can use.Flyash in iron removal after using several times, after the usable acid regeneration of waste liquor is processed, Reusability.
Compared with prior art, the present invention has following advantage and effect: at first technology is simple, small investment, and it need not change original production technology, does not need to build in addition treatment facility, only introduces steam pipe in former subsider, arranges that aluminium wire netting gets final product.Secondly, raw material is easy to get, and product cost is low, and used iron removing reagent, aluminium wire etc. all are the product of easily doing shopping on the market, and flyash is the solid waste of power plant.The 3rd, de-ferrous effect is remarkable, the active A l in raw material
2O
3〉=25%, Fe
2O
3In the time of≤3.35%, Fe in the aluminum sulfate product that the inventive method is processed
2O
3≤ 0.02%, outward appearance is sparkling and crystal-clear pure white.In a word, the invention solves the technical barrier of producing deironing in the Tai-Ace S 150 process in pickling process.
Embodiment 1
With the Al that contains below 200 grams, 60 orders
2O
3Be 49.7%, Fe
2O
3Be that 3.35% bauxite concentration is that 60% sulfuric acid reaction to pH value is 2.5 o'clock, add 79.6 grams, 5% liquor potassic permanganate, reaction is 20 minutes under the boiling condition, the manganese sulfate solution that adds again 57 grams 10%, under said temperature, continue reaction 20 minutes, the polyacrylamide that adds 2 milliliter 0.5% stirs and leaves standstill sedimentation separation after 2 minutes in beaker; The supernatant immigration is provided with in the beaker of aluminium wire netting, adds 20 grams flyash after treatment by per 100 milliliters of clear liquids, boiled elimination flyash 20 minutes; Filtrate moves into and to be provided with in the beaker of aluminium wire netting, and evaporation and concentration to 115 ℃ is poured product in crystallizer natural cooling crystallization, this product A l
2O
3Content is 15.77, Fe
2O
3Content is 0.0015%.
Embodiment 2
Except the flyash addition is that per 100 milliliters of supernatants are that all the other conditions are identical with embodiment 1 with step, products obtained therefrom Al 10 grams
2O
3Content is 15.70%, Fe
2O
3Be content 0.0017%.
Embodiment 3
With the Al that contains below 200 grams, 60 orders
2O
3Be 32.35%, Fe
2O
3Be that 1.664% bauxite concentration is that 60% sulfuric acid solution acid-leaching reaction to pH value is 2.0 o'clock, add the liquor potassic permanganate of 32.9 grams 20% in 90 ℃ of lower reactions 20 minutes, the manganese sulfate solution that adds again 47 grams 20% continues reaction 20 minutes under uniform temp, all the other steps such as embodiment 1, Al in the products obtained therefrom
2O
3Content is 15.99%, Fe
2O
3Content is 0.0175%.
Embodiment 4
With the Al that contains below 200 grams, 60 orders
2O
3Be 27.35%, Fe
2O
3Be 1.567% colliery powder, the method identical with embodiment 1 adds the liquor potassic permanganate of 12.4 grams 5%, the manganese sulfate solution of 9 grams 10%, Al in the products obtained therefrom
2O
3Content is 16.07%, Fe
2O
3Content is 0.007%.
Claims (4)
1. the method for a deironing in the Tai-Ace S 150 production process is characterized in that comprising the following steps:
(1) in the later stage of aluminum-containing mineral acid-leaching reaction, the control pH value is 2.0 to 3.0 o'clock, presses Fe in the aluminum-containing mineral in pickle liquor
2O
3The 0.1-2.0 of weight doubly adds the liquor potassic permanganate that concentration is 5-20%, in 80-100 ℃ of reaction 15-25 minute, doubly add the manganese sulfate solution that concentration is 5-20% by the 1.2-2.0 that adds potassium permanganate weight again, continue reaction 15-25 minute in 80-100 ℃, add then the flocculant polyacrylamide, make its content reach 10PPM, sedimentation separation;
(2) above-mentioned settlement separate supernatant liquor immigration is contained in the container of aluminium wire netting, and add the flyash after cleanup acid treatment of alum liquor weight 5-20%, boiled 15-25 minute, filter;
(3) immigration of above-mentioned filtrate is contained in the thickener of aluminium wire netting, evaporation concentration is cooled off to 110-120 ℃, and crystallization gets product.
2. the method for deironing in the Tai-Ace S 150 production process according to claim 1 is characterized in that described aluminium wire netting is the reticulation of aluminium wire or aluminium flake establishment.
3. the method for deironing in the Tai-Ace S 150 production process according to claim 1 is characterized in that the flyash of described cleanup acid treatment, is with firepower electrical plant flyash, boils 5-30 minute through adding dilute sulphuric acid or dilute hydrochloric acid, filters, and being washed with water to pH value is 5.
4. the method for deironing in the Tai-Ace S 150 production process according to claim 1 is characterized in that described aluminum-containing mineral can be bauxitic clay, kaolin or coal gangue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120355 CN1031459C (en) | 1993-11-29 | 1993-11-29 | Iron-removing method used in course of aluminum sulfate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120355 CN1031459C (en) | 1993-11-29 | 1993-11-29 | Iron-removing method used in course of aluminum sulfate production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1089919A CN1089919A (en) | 1994-07-27 |
| CN1031459C true CN1031459C (en) | 1996-04-03 |
Family
ID=4993272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93120355 Expired - Fee Related CN1031459C (en) | 1993-11-29 | 1993-11-29 | Iron-removing method used in course of aluminum sulfate production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031459C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1861525B (en) * | 2005-12-07 | 2010-05-12 | 金立新 | Treatment process of active hargil waste acid |
| CN101690860B (en) * | 2009-09-29 | 2011-04-20 | 中南建筑设计院股份有限公司 | Manganese composite filter material and manufacturing method thereof |
| CN101891289A (en) * | 2010-07-15 | 2010-11-24 | 哈尔滨商业大学 | Effective method for removing lead in water from water source |
| CN112299721A (en) * | 2020-10-30 | 2021-02-02 | 神华准能资源综合开发有限公司 | Method for preparing alumina and co-producing microcrystalline glass based on pulverized coal furnace fly ash and product |
-
1993
- 1993-11-29 CN CN 93120355 patent/CN1031459C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1089919A (en) | 1994-07-27 |
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