CN1371865A - Method for producing white alum - Google Patents
Method for producing white alum Download PDFInfo
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- CN1371865A CN1371865A CN 02111042 CN02111042A CN1371865A CN 1371865 A CN1371865 A CN 1371865A CN 02111042 CN02111042 CN 02111042 CN 02111042 A CN02111042 A CN 02111042A CN 1371865 A CN1371865 A CN 1371865A
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- crystallization
- production method
- alum
- potassium
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Abstract
The production method of alum includes the following steps: firstly, placing waste sulfuric acid into a reactor, progressively adding aluminium dust, making them produce reaction; then adding proper quantity of water and decolouring agent to remove colour; filtering decoloured reactino liquor, adding proper quantity of potassium in filtered filtrate and make concentration, moving the concentrated mother liquor into crystallizatino pool to make crystallization, then drying obtained crystal so as to obtain the invented product. It the above-mentioned productino process the decolouring and potassium-adding steps can be saved according to the condition.
Description
Technical field
The present invention relates to a kind of production method of product, specifically a kind of production method of alum.
Background technology
The production method of alum has two kinds of natural alumstone working system and chemical synthesiss.Then along with the continuous exploitation of natural alumstone mineral reserve, its resource is gradually reducing, open that to produce cost also more and more higher, and alunite produces alum and also have the defective that the production cycle is long, productive rate is low, energy consumption is high, the waste that produces in its production process has also brought more environmental pollution.The chemosynthesis fado adopts industrial chemicals, has introduced a kind of method with Tai-Ace S 150, bicarbonate of ammonia and gas washing in SA production alum as patent 92106677, but it is higher to produce its production cost of alum with it.
Summary of the invention
The technical problem to be solved in the present invention is at above-mentioned deficiency, develops a kind of production method of alum, is with industrial waste aluminium ash and the sulfur waste acid raw materials for production as alum in this kind production method.
Embodiment of the present invention: production stage of the present invention is: (1) reaction: earlier sulfur waste acid is dropped in the reactor, progressively add the aluminium ash again, make it to react; (2) decolouring: after reaction finishes, add an amount of water again, and drop into discoloring agent, remove look and handle; (3) filter: filtering except that the reaction solution behind the look; (4) add potassium: add an amount of potassium in filtrate filtered: (5) concentrate: the filtrate of having added behind the potassium is concentrated: (6) crystallization: the mother liquor immigration crystallizing pond crystallization that concentrates well; (7) drying: then drying treatment is carried out in the crystallization of gained.
Production stage of the present invention also can be: (1) reaction: earlier sulfur waste acid is dropped in the reactor, progressively add the aluminium ash again, make it to react; (2) filter: the reaction solution that obtains is filtered; (3) concentrate: filtrate filtered is concentrated: (4) crystallization: move into the crystallizing pond crystallization concentrating good mother liquor; (5) drying: then drying treatment is carried out in the crystallization of gained.
Advantage of the present invention: low production cost, raw material sources are abundant, and the influence to environment in the production process is also less, and employing of the present invention can also reduce the product of opening to alunite mineral products resource, protects natural Mineral resources.
Embodiment
The production method of alum of the present invention, its production stage is: (1) reaction: earlier sulfur waste acid is dropped in the acid-resistant tank, progressively add the aluminium ash again, make it to react: (2) decolouring: add an amount of water after reaction finishes again, and drop into the discoloring agent activated carbon, remove look and handle; (3) filter: filtering with the multilayer filter cloth except that the reaction solution behind the look; (4) add potassium: in filtrate filtered, add an amount of vitriolate of tartar; (5) concentrate: the filtrate of having added behind the vitriolate of tartar is concentrated with method of evaporation; (6) crystallization: move into the crystallizing pond crystallization concentrating good mother liquor; (7) drying: centrifugal putting into supercentrifuge from the crystallization of crystallizing pond gained then, to get rid of the branch that anhydrates with it drying, packing is put in storage at last.
The used sulfur waste acid of the present invention should be adjusted to suitable concentration with sulfur waste acid according to the sulfuric acid content in the sulfur waste acid before adding the reaction of aluminium ash, then according to the sulfur waste acid concentration of adjusting and measure the corresponding aluminium ash of rational proportion again.Then carry out above-mentioned reaction again.
Sulfur waste acid as no foreign pigment that the present invention is used, the processing of just need not decolouring.If the alum product that the present invention produced is to use for some special industry,, just can add vitriolate of tartar as paper industry usefulness.Therefore, production method of the present invention also can not comprise decolouring and add these two steps of potassium, does not comprise that decolouring and the production stage of the present invention that adds the potassium step are: (1) reaction: earlier sulfur waste acid is dropped in the acid-resistant tank, progressively add the aluminium ash again, make it to react; (2) filter: the reaction solution that obtains is filtered with the multilayer filter cloth; (3) concentrate: filtrate filtered is concentrated with method of evaporation: (4) crystallization: move into the crystallizing pond crystallization concentrating good mother liquor; (5) drying: centrifugal putting into supercentrifuge from the crystallization of crystallizing pond gained then, to get rid of the branch that anhydrates with it drying, packing is put in storage at last.
Claims (6)
1, a kind of production method of alum, its production stage is: (1) reaction: earlier sulfur waste acid is dropped in the reactor, progressively add the aluminium ash again, make it to react; (2) decolouring: after reaction finishes, add an amount of water again, and drop into discoloring agent, remove look and handle; (3) filter: filtering except that the reaction solution behind the look; (4) add potassium: in filtrate filtered, add an amount of potassium; (5) concentrate: concentrated the filtrate of having added behind the potassium; (6) crystallization: move into the crystallizing pond crystallization concentrating good mother liquor: (7) drying: then drying treatment is carried out in the crystallization of gained.
2, the production method of alum according to claim 1 is characterized in that described reactor is acid-resistant tank or reactor.
3, the production method of alum according to claim 1 is characterized in that described filtration is that the multilayer filter cloth filters.
4, the production method of alum according to claim 1 is characterized in that used discoloring agent is an activated carbon, and the potassium that is added is vitriolate of tartar.
5, the production method of alum according to claim 1 is characterized in that what drying treatment was performed such: centrifugal putting into supercentrifuge from the crystallization of crystallizing pond gained, and to get rid of the branch that anhydrates.
6, a kind of production method of alum, its production stage is: (1) reaction: earlier sulfur waste acid is dropped in the reactor, progressively add the aluminium ash again, make it to react: filter (2): the reaction solution that obtains is filtered; (3) concentrate: filtrate filtered is concentrated; (4) crystallization: move into the crystallizing pond crystallization concentrating good mother liquor; (5) drying: then drying treatment is carried out in the crystallization of gained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111042 CN1244496C (en) | 2002-03-13 | 2002-03-13 | Method for producing white alum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111042 CN1244496C (en) | 2002-03-13 | 2002-03-13 | Method for producing white alum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1371865A true CN1371865A (en) | 2002-10-02 |
| CN1244496C CN1244496C (en) | 2006-03-08 |
Family
ID=4741365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02111042 Expired - Fee Related CN1244496C (en) | 2002-03-13 | 2002-03-13 | Method for producing white alum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1244496C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445330A (en) * | 2014-12-10 | 2015-03-25 | 兴安宸亿工贸有限公司 | Method for producing aluminum ammonium sulfate crystal |
| CN104477960A (en) * | 2014-12-10 | 2015-04-01 | 兴安宸亿工贸有限公司 | Method for producing potassium alum |
| CN106277010A (en) * | 2016-08-24 | 2017-01-04 | 淄博市淄川程鹏化工厂 | A kind of Alumen production technology |
-
2002
- 2002-03-13 CN CN 02111042 patent/CN1244496C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445330A (en) * | 2014-12-10 | 2015-03-25 | 兴安宸亿工贸有限公司 | Method for producing aluminum ammonium sulfate crystal |
| CN104477960A (en) * | 2014-12-10 | 2015-04-01 | 兴安宸亿工贸有限公司 | Method for producing potassium alum |
| CN104445330B (en) * | 2014-12-10 | 2016-05-18 | 兴安宸亿工贸有限公司 | A kind of production method of ammonia-alum |
| CN104477960B (en) * | 2014-12-10 | 2016-08-17 | 兴安宸亿工贸有限公司 | A kind of production method of potassium alum |
| CN106277010A (en) * | 2016-08-24 | 2017-01-04 | 淄博市淄川程鹏化工厂 | A kind of Alumen production technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1244496C (en) | 2006-03-08 |
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