CN106745143A - A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium - Google Patents
A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium Download PDFInfo
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- CN106745143A CN106745143A CN201710034935.5A CN201710034935A CN106745143A CN 106745143 A CN106745143 A CN 106745143A CN 201710034935 A CN201710034935 A CN 201710034935A CN 106745143 A CN106745143 A CN 106745143A
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- Prior art keywords
- aluminium
- mud
- powder
- ammonium sulfate
- aluminium mud
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium, after the aluminium mud dried uniformly is mixed with ammonium sulfate, is placed on ball milling in ball grinder, obtains the aluminium mud and ammonium sulfate mixed-powder of 60 mesh；Aluminium mud and ammonium sulfate mixed-powder are carried out into high temperature pyrolysis at 300 DEG C~500 DEG C, mixed-powder after pyrolysis is added to the water, fully dissolved in 70 DEG C~100 DEG C insulated and stirreds, filtered, after filtrate is evaporated into crystallization, obtain alum crystalline solid；By alum crystalline solid at 400 DEG C~600 DEG C high temperature ammonolysis, obtain aluminum sulfate crystal.Advantage is：Process is simple, with aluminium mud as raw material, low raw-material cost can be effectively treated to by-product aluminium mud, aluminium mud is fully used, and both process by-product aluminium mud, also reduce waste pollution.
Description
Technical field
Field, the side of the clay standby Solid aluminum sulfate of more particularly to a kind of use by-product aluminium are administered the invention belongs to waste residue aluminium mud
Method.
Background technology
Aluminum sulfate is a kind of important raw material of industry, and it can be used to produce synthetic cut stone and produces various aluminium salt series
Product, such as ammonia alum, potassium alum, POV aluminium, and can serve as glue used in paper-making and drinking water, industrial water and waste water
The flocculant for the treatment of.In addition, aluminum sulfate is also widely used in the high-quality fining agent, agent of oil deodorization and discoloration, concrete waterproofer, senior
Paper forging is white, titanium dioxide cladding film is processed and the production of catalyst carrier.
Aluminium mud is the waste residue produced in calcium-free roasting production process, and the main component of aluminium mud is sodium chromate and aluminium hydroxide,
Other also have a small amount of silica, calcium oxide, magnesia and iron oxide.Because aluminium mud is in muddy, and contain Cr6+Can not
Arbitrarily stack or abandon, these bits are typically more intractable, it is most of all by outdoor storage, environment is not only influenceed, and cause
The waste of a large amount of bauxite resources.
At present, the main method of domestic and international production aluminum sulfate has and is obtained by bauxite and sulfuric acid compressive reaction, or uses sulfuric acid
Decomposing alunite, kaolin and salic silicon raw material can be obtained, and this technique is cumbersome and whard to control.Aluminum sulfate can also lead to
Cross aluminium hydroxide (Al (OH)3) input sulfuric acid (H2SO4) middle preparation, though this technique is simple, with Al (OH)3It is raw material, raw material
It is relatively costly, and with sulfuric acid as raw material, corrosion is easily caused, it is higher to equipment requirement.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium, the method
Process is simple, low production cost can be effectively treated to by-product aluminium mud, aluminium mud is fully used, and solve aluminium mud and stack
The problem of environmental pollution for bringing.
The technical problem to be solved in the present invention is：
A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium, it is comprised the concrete steps that：
1) milling is dried
The aluminium mud that will be dried is with ammonium sulfate according to Al in aluminium mud2O3With (NH4)2SO4Mol ratio 1:3~1:After 5 uniform mixing,
Ball milling 1h~3h in ball grinder is placed on, the aluminium mud and ammonium sulfate mixed-powder of -60 mesh is obtained；
2) high temperature pyrolysis
Aluminium mud and ammonium sulfate mixed-powder are carried out into high temperature pyrolysis 1h~3h at 300 DEG C~500 DEG C, by mixing after pyrolysis
Powder is added to the water, and the mixed-powder is 1 with the mass ratio of water:8~1:10, in 70 DEG C~100 DEG C insulated and stirred 1h~3h
Fully dissolving, filtering after filtrate is evaporated into crystallization, obtains alum crystalline solid；
3) high temperature ammonolysis
By alum crystalline solid at 400 DEG C~600 DEG C high temperature ammonolysis 2h~4h, obtain aluminum sulfate crystal.
Al in the aluminium mud of the drying2O3Mass percentage content be 60%~80%.
During high temperature pyrolysis, while aluminium mud and ammonium sulfate mixed-powder are heated, aluminium mud and ammonium sulfate are mixed
Mix, make aluminium mud and ammonium sulfate pyrolysis more thorough.
Step 1) ball milling when, the granularity for obtaining aluminium mud and ammonium sulfate mixed-powder is 40 mesh~60 mesh.
It is raw material that the present invention uses by-product aluminium mud, after alundum (Al2O3) mixes with ammonium sulfate in aluminium mud, using ammonium sulfate
Solid-phase pyrolysis, are pyrolyzed at high temperature, then industrial aluminum sulphate crystalline substance will be obtained after material water dissolves, the ammonolysis after pyrolysis
Body, its advantage is：
(1), process is simple, with aluminium mud as raw material, low raw-material cost can be effectively treated to by-product aluminium mud, obtain aluminium mud
To making full use of, by-product aluminium mud was both processed, also reduced waste pollution.
(2) aluminium mud and ammonium sulfate are placed in ball grinder, ball milling powdering allows reactant more fully to react,
And aluminium mud is solved in muddy, not tractable problem.
(3) alum crystalline solid product is produced by the method for crystallizing using aluminium mud, it is possible to reduce the impurity in aluminium mud
It is updated in product, effectively reduces the content of impurity in product.
(4) using the sour aluminium crystal of method production of evaporative crystallization, energy resource consumption is low, product quality stabilization, and separation of solid and liquid
Hurry up, 1 ton of aluminium mud can produce 1.9 tons~2.6 tons of aluminum sulfate crystal, the rate of recovery up to 90%~95%, expire by obtained aluminum sulfate
High-class product industrial aluminum sulphate Al in sufficient professional standard2O3The standard of content >=17wt%.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
Embodiment 1
1) milling is dried
Take 1 ton of aluminium mud of drying, its alundum (Al2O3) content is 60%, adds 2.37 tons of ammonium sulfate, put in ball grinder fully
Mix grinding 1h, obtains 40 mesh~60 mesh aluminium mud and ammonium sulfate mixed-powder；
2) high temperature pyrolysis
By step 1) the aluminium mud that obtains and ammonium sulfate mixed-powder be pyrolyzed 1h under the conditions of being placed in 300 DEG C, by aluminium mud in pyrolytic process
Puddled with ammonium sulfate, make its pyrolysis abundant, be with the mass ratio of water according to mixed-powder by mixed-powder after pyrolysis
1:8 are added to the water, and are fully dissolved in 70 DEG C of insulated and stirred 1h, filtering, after filtrate is evaporated into crystallization, obtain alum knot
Crystal；
3) high temperature ammonolysis
By alum crystalline solid under the conditions of 400 DEG C high temperature ammonolysis 2h, obtain 1.91 tons of white solid aluminum sulfate crystal.
It is computed, the rate of recovery of product is 90.8%, and the purity of product is with Al2O3Content is calculated as 28.52wt% and fully meets
Technical grade sulfuric acid aluminium product index (Al2O3>=17wt%).
Embodiment 2
1) milling is dried
Take 1 ton of aluminium mud of drying, its alundum (Al2O3) content is 80%, adds 5.17 tons of ammonium sulfate, put in ball grinder fully
Mix grinding 3h, obtains 40 mesh~60 mesh aluminium mud and ammonium sulfate mixed-powder；
2) high temperature pyrolysis
By step 1) the aluminium mud that obtains and ammonium sulfate mixed-powder be pyrolyzed 3h under the conditions of being placed in 500 DEG C, by aluminium mud in pyrolytic process
Puddled with ammonium sulfate, make its pyrolysis abundant, be with the mass ratio of water according to mixed-powder by mixed-powder after pyrolysis
1:10 are added to the water, and are fully dissolved in 100 DEG C of insulated and stirred 3h, filtering, after filtrate is evaporated into crystallization, obtain alum
Crystalline solid；
3) high temperature ammonolysis
By alum crystalline solid under the conditions of 600 DEG C high temperature ammonolysis 4h, obtain 2.55 tons of white solid aluminum sulfate crystal.
It is computed, product recovery rate is 94.9%, the purity of product is with Al2O3Content is calculated as 29.76wt% and fully meets work
Industry level aluminum sulfate product index.
Embodiment 3
1) milling is dried
Take 1 ton of aluminium mud of drying, its alundum (Al2O3) content is 70%, adds 3.68 tons of ammonium sulfate, put in ball grinder fully
Mix grinding 2h, obtains the aluminium mud and ammonium sulfate mixed-powder of -60 mesh；
2) high temperature pyrolysis
By step 1) the aluminium mud that obtains and ammonium sulfate mixed-powder be pyrolyzed 2h under the conditions of being placed in 400 DEG C, by aluminium mud in pyrolytic process
Puddled with ammonium sulfate, make its pyrolysis abundant, be with the mass ratio of water according to mixed-powder by mixed-powder after pyrolysis
1:9 are added to the water, and are fully dissolved in 80 DEG C of insulated and stirred 2h, filtering, after filtrate is evaporated into crystallization, obtain alum knot
Crystal；
3) high temperature ammonolysis
By alum crystalline solid under the conditions of 500 DEG C high temperature ammonolysis 3h, obtain 2.24 tons of white solid aluminum sulfate crystal.
It is computed, product recovery rate is 92.4%, the purity of product is with Al2O3Content is calculated as 28.87wt% and fully meets work
Industry level aluminum sulfate product index.
Specific embodiment of the invention is these are only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (4)
1. the method for the clay standby Solid aluminum sulfate of a kind of use by-product aluminium, it is characterized in that：
Comprise the concrete steps that：
1) milling is dried
The aluminium mud that will be dried is with ammonium sulfate according to Al in aluminium mud2O3With (NH4)2SO4Mol ratio 1:3~1:After 5 uniform mixing, put
Ball milling 1h~3h in ball grinder, obtains the aluminium mud and ammonium sulfate mixed-powder of -60 mesh；
2) high temperature pyrolysis
Aluminium mud and ammonium sulfate mixed-powder are carried out into high temperature pyrolysis 1h~3h at 300 DEG C~500 DEG C, by mixing after pyrolysis
Powder is added to the water, and the mixed-powder is 1 with the mass ratio of water:8~1:10, in 70 DEG C~100 DEG C insulated and stirred 1h~3h
Fully dissolving, filtering after filtrate is evaporated into crystallization, obtains alum crystalline solid；
3) high temperature ammonolysis
By alum crystalline solid at 400 DEG C~600 DEG C high temperature ammonolysis 2h~4h, obtain aluminum sulfate crystal.
2. the method for the clay standby Solid aluminum sulfate of use by-product aluminium according to claim 1, it is characterized in that：The aluminium of the drying
Al in mud2O3Mass percentage content be 60%~80%.
3. the method for the clay standby Solid aluminum sulfate of use by-product aluminium according to claim 1, it is characterized in that：High temperature pyrolysis process
In, while aluminium mud and ammonium sulfate mixed-powder are heated, aluminium mud and ammonium sulfate are puddled, it is pyrolyzed aluminium mud and ammonium sulfate
It is more thorough.
4. the method for the clay standby Solid aluminum sulfate of use by-product aluminium according to claim 1, it is characterized in that：Step 1) ball milling
When, the granularity for obtaining aluminium mud and ammonium sulfate mixed-powder is 40 mesh~60 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034935.5A CN106745143A (en) | 2017-01-18 | 2017-01-18 | A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710034935.5A CN106745143A (en) | 2017-01-18 | 2017-01-18 | A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium |
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| CN106745143A true CN106745143A (en) | 2017-05-31 |
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| CN201710034935.5A Pending CN106745143A (en) | 2017-01-18 | 2017-01-18 | A kind of method of the clay standby Solid aluminum sulfate of use by-product aluminium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744936A (en) * | 2022-10-24 | 2023-03-07 | 四川省银河化学股份有限公司 | Method for comprehensively utilizing mirabilite and aluminum-containing resources |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325411A (en) * | 1991-04-25 | 1992-11-13 | Nittetsu Mining Co Ltd | Production of high purity alumina from aluminum containing inorganic acid |
| CN101254934A (en) * | 2007-02-26 | 2008-09-03 | 苏宗裕 | Method for manufacturing aluminum sulfate |
| CN101734698A (en) * | 2009-09-08 | 2010-06-16 | 东北大学 | Method for preparing aluminum oxide from aluminiferous material |
| CN102627306A (en) * | 2012-04-19 | 2012-08-08 | 广西柳州福圆化工有限公司 | Novel method for preparing solid aluminum sulfate by using waste |
-
2017
- 2017-01-18 CN CN201710034935.5A patent/CN106745143A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325411A (en) * | 1991-04-25 | 1992-11-13 | Nittetsu Mining Co Ltd | Production of high purity alumina from aluminum containing inorganic acid |
| CN101254934A (en) * | 2007-02-26 | 2008-09-03 | 苏宗裕 | Method for manufacturing aluminum sulfate |
| CN101734698A (en) * | 2009-09-08 | 2010-06-16 | 东北大学 | Method for preparing aluminum oxide from aluminiferous material |
| CN102627306A (en) * | 2012-04-19 | 2012-08-08 | 广西柳州福圆化工有限公司 | Novel method for preparing solid aluminum sulfate by using waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744936A (en) * | 2022-10-24 | 2023-03-07 | 四川省银河化学股份有限公司 | Method for comprehensively utilizing mirabilite and aluminum-containing resources |
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Application publication date: 20170531 |
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