CN109399676A - A kind of industrial sodium aluminate solution method of purification - Google Patents
A kind of industrial sodium aluminate solution method of purification Download PDFInfo
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- CN109399676A CN109399676A CN201710703391.7A CN201710703391A CN109399676A CN 109399676 A CN109399676 A CN 109399676A CN 201710703391 A CN201710703391 A CN 201710703391A CN 109399676 A CN109399676 A CN 109399676A
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- sodium aluminate
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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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
Abstract
The invention belongs to technical field of alumina production, specifically disclose a kind of method of purification of aluminum oxide industry sodium aluminate solution.The industrial sodium aluminate solution method of purification is comprising steps of ozone Oxidation Treatment: ozone gas is passed through into industrial sodium aluminate solution, carry out gas-liquid mixed reaction, the intake of ozone gas is 0.01~10000g/l, and reaction temperature is 0~100 DEG C, the reaction time 0.0001~5 hour.It is influenced using ozone high oxidation gesture, not by pH value, fast reaction, the characteristic for all having superpower damage capability to inorganic matter, organic matter, bacterium, algae, it allows industrial sodium aluminate solution to react with ozone gas and removes substance of the oxidation potential less than 2.07 in industrial sodium aluminate solution, including inorganic matter, organic matter, bacterium, yeast, parasite and algae etc., the industrial sodium aluminate solution of mistake treated by ozone is bright without odor, color, and absorbance is between 0.001-2.999.
Description
Technical field
The present invention relates to technical field of alumina production, more particularly to a kind of purification of aluminum oxide industry sodium aluminate solution
Method.
Background technique
Sodium aluminate also known as sodium metaaluminate are a kind of general chemical articles, white, odorless, tasteless, in the solid of strong basicity.
The main body of industrial sodium aluminate solution is XNa2O·YAl2O3·ZH2O, synthetic method mainly have Bayer process, sintering process, combination method.
With the development of aluminum oxide industry, sintering process, combination method have gradually exited the arena of history because of at high cost and complex process.At present
Other than individual special-alumina factories, 90% or more industrial sodium aluminate solution is produced by Bayer process.
The principles and methods of producing aluminium oxide by bayer are as follows.In the case where being heated to certain temperature, caustic solution dissolves out alumina
Aluminium oxide in mine obtains industrial sodium aluminate solution, reaction equation are as follows:
Al2O3·H2O+2NaOH+2H2O→2NaAl(OH)4,
Resulting industrial sodium aluminate solution decomposes in the case where dilution and cooling and aluminium hydroxide is precipitated:
NaAl(OH)4→Al(OH)3+NaOH。
Two above reaction process is process in leaching and decomposable process respectively.Mother liquor after decomposition containing caustic alkali returns again to molten
New bauxite out.Decompose obtained Al (OH)3It is fired to obtain alumina product again.
Bauxite main ingredient is aluminium oxide, also containing a certain amount of silica, iron oxide, titanium oxide etc., simultaneously also
It is associated with the multiple elements such as gallium, vanadium, lithium, rare earth metal, niobium, tantalum, titanium, scandium.It is various in bauxite under the action of high temperature highly basic
The solvable alkali composition of inorganic matter largely enters alumina producing system；Under the action of highly basic, the native state of bauxite institute association
Tree root, the humic acid that is formed through chemical change and microorganism decomposition animals and plants and pitch also enter alumina producing system；?
In production process, crystallization auxiliary, flocculant, lubricant, flotation agent of addition etc. also continuously enter alumina producing
System；The alkaline etchings such as filter cloth object also constantly enters alumina producing system；Sulfide, chloride in raw materials for production lime are not yet
Enter alumina producing system disconnectedly；When additional moisturizing, organic matter, inorganic matter in water also constantly enter alumina producing system
System, under certain temperature, humidity and effect of sunlight, a large amount of bacterium, algae breed in alumina producing system, spread.
The above reason causes the industrial sodium aluminate solution dissolved out in practical alumina producing complex in composition, and color is partially deep, has
It is dark brown even dark brown.This industrial sodium aluminate solution can seriously affect the dissolution in producing aluminium oxide by bayer
Journey, decomposable process, evaporation process, red-mud separation process, especially red-mud separation process, it is unqualified to eventually lead to product quality.
Current producing aluminium oxide by bayer process does not have self-cleaning system, in face of increasingly dirtier industrial sodium aluminate solution
This pot " long-used soup ", is to have no way out, helpless.Meanwhile in face of this pot " long-used soup " of increasingly dirtier industrial sodium aluminate solution, if
Production procedure is counted, produces new alumina product also into extravagant hope.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of industrial sodium aluminate solution method of purification, the work purified
Its color of industry sodium aluminate solution is bright, and content of organics is substantially reduced, and dissolution production capacity, evaporative capacity have a degree of mention
Height, red-mud separation process efficiency are also significantly increased.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of industrial sodium aluminate solution purification
Method, comprising steps of
Ozone Oxidation Treatment: being passed through ozone gas into industrial sodium aluminate solution, carries out gas-liquid mixed reaction, ozone gas
Intake be 0.01~10000g/l, reaction temperature be 0~100 DEG C, the reaction time 0.0001~5 hour, obtained after reaction
Industrial sodium aluminate solution absorbance control 0.001~2.999.
Preferably, during ozone Oxidation Treatment, ozone oxidation catalyst is added into industrial sodium aluminate solution.
It is further preferred that the ozone oxidation catalyst be any one of Titanium, vanadium, copper, zinc, iron, nickel, manganese or
Several mixing.
Preferably, the method for purification comprising steps of
Active carbon filtering: industrial sodium aluminate solution is filtered by the activated carbon filter media layer of 0.5~50mm thickness
Processing.
Preferably, the method for purification comprising steps of
Aluminium hydroxide or aluminium oxide refined filtration: aluminium hydroxide or oxidation of the industrial sodium aluminate solution by 0.5~50mm thickness
Aluminium filtering medium layer is filtered processing, the granularity of aluminium hydroxide or aluminium oxide in aluminium hydroxide or alumina filter media layer
D50 is 1.0~100 μm.
Preferably, the method for purification comprising steps of
Hydrogen peroxide oxidation: hydrogen peroxide being added into industrial sodium aluminate solution, mixes well, the quality percentage of the hydrogen peroxide
Specific concentration is 25~35%, and the additional amount of hydrogen peroxide is the 0.001~10% of industrial sodium aluminate solution volume, the reaction time 5~
15 minutes.
Preferably, the method for purification comprising steps of
Ultraviolet light irradiation: industrial sodium aluminate solution is 5000~90000 μ W/cm in radiation intensity2Under short wavelength ultraviolet,
Irradiation 5~60 minutes, industrial sodium aluminate solution irradiation depth are 1~10000mm.
It is further preferred that the specific surface area of active carbon is in 300~2000m when active carbon filters2Between/g.
Preferably, a kind of industrial sodium aluminate solution method of purification, comprising the following steps:
S1: active carbon filtering: industrial sodium aluminate solution was carried out by the activated carbon filter media layer of 0.5~50mm thickness
Filter processing；
S2: hydrogen peroxide oxidation: being added hydrogen peroxide in through step S1 treated industrial sodium aluminate solution, mix well,
The mass percent concentration of the hydrogen peroxide is 25~35%, and the additional amount of hydrogen peroxide is industrial sodium aluminate solution volume
0.001~10%, the reaction time 5~15 minutes；
S3: ultraviolet light irradiation: industrial sodium aluminate solution after step S2 processing is 5000~90000 μ in radiation intensity
W/cm2It under short wavelength ultraviolet, irradiates 5~60 minutes, industrial sodium aluminate solution irradiation depth is 1~10000mm；
S4: ozone Oxidation Treatment: it is passed through ozone gas in through step S3 treated industrial sodium aluminate solution, carries out gas
Liquid hybrid reaction, the intake of ozone gas are 0.01~10000g/l, and reaction temperature is 0~100 DEG C, the reaction time 0.0001
~5 hours, the absorbance of the industrial sodium aluminate solution obtained after reaction was controlled 0.001~2.999；
S5: aluminium hydroxide or aluminium oxide refined filtration: thick by 0.5~50mm through step S4 treated industrial sodium aluminate solution
The aluminium hydroxide or alumina filter media layer of degree are filtered processing, hydroxide in aluminium hydroxide or alumina filter media layer
The granularity D50 of aluminium or aluminium oxide is 1.0~100 μm.
Preferably, when step S1 active carbon filters, the specific surface area of active carbon is in 300~2000m2Between/g；Step S4
During ozone Oxidation Treatment, ozone oxidation catalyst is added into industrial sodium aluminate solution.
Ozone Oxidation Treatment
Ozone (O3) very unstable, it can be analyzed to oxygen at normal temperatures and pressures.The oxidation potential (reduction potential) of ozone, chlorine
It is 2.07 and 1.36 respectively, it is seen that ozone is oxidation strongest one kind of strength in processing water.The oxidation of ozone causes not
The rupture of the organic molecule of saturation.It is incorporated in ozone molecule in the double bond of organic molecule, generates ozonide.Ozonide
Spontaneous division generates a carboxyl compound and with acid and basic group amphoteric ion, the latter be it is unstable, can divide
Solution is at acid and aldehyde.The oxidability of ozone is extremely strong, and oxidation-reduction potential is only second to fluorine, mainly with this spy in its application
Property.Ozone can send out ozoniferous reduction reaction with inorganic matter, for example, with ferrous, Mn2+, sulfide, rhodanide, cyanide,
Chlorine etc. reacts.Ozone is reacted with organic matter, and ozone is extremely complex with reacting for organic matter in aqueous solution.Such as it is smelly
Oxygen can be reacted with alkenes compounds, and ozone is easy to react with the olefin(e) compound with double bond, the final production of reaction
Object may be the mixture of monomer, polymerization or staggered ozonide, and ozonide resolves into aldehyde and acid；Ozone and fragrance
The reaction of the reaction of compounds of group, ozone and aromatic compound is slower；Nucleoprotein (amino acid) system, organic amino are also all occurred
Reaction.Ozone can destroy the cell wall of decomposing bacteria, and soon diffusion penetrates into intracellular, oxygenolysis bacterium internal oxidation grape
Glucose oxidase necessary to sugar etc. can also directly have an effect with bacterium, virus, destroy cell, ribonucleic acid
(RNA), the macromolecule polyalcohols such as decomposition DNA (DNA), RNA, protein, lipid and polysaccharide, make the generation of bacterium
It thanks and is destroyed with reproductive process.Bacterium is caused by the fracture of cell membrane by ozone kill, this process is referred to as cell and disappears
It dissipates, is caused by being crushed in water due to cytoplasm, cell can not regenerate under conditions of dissipation.It is sterilized with hypochlorous acid class
Agent is different, and the sterilizing ability of ozone is not influenced by pH value variation and ammonia, and sterilizing ability is 600-3000 times bigger than chlorine, it goes out
Bacterium, disinfection almost instantaneously occur, in water ozone concentration be 0.3-2mg/L when, in 0.5-1min can so that
Dead bacterium.Ozone Water pharmaceutical quantities needed for reaching identical sterilization effect (as made Escherichia coli killing rate up to 99%) are only chlorine
0.0048%.Ozone is also active to yeast and parasite etc., can remove virus, sporangiocyst, spore, fungi, parasitism with it
Biology.In addition, ozone can also aoxidize, decompose pollutant in water, to removing odor, decoloration, sterilization, removal in water process
It phenol, cyanogen, iron, manganese and reduces COD, BOD etc. all there is significant effect.
In this application, exactly influenced using ozone high oxidation gesture, not by pH value, fast reaction, to inorganic matter, organic
Object, bacterium, algae all have the characteristic of superpower damage capability, and industrial sodium aluminate solution is allowed to be sufficiently mixed with ozone gas, carry out deep
Spend catalytic pyrolysis.Ozone can remove the substance of oxidation potential in industrial sodium aluminate solution (reduction potential) less than 2.07, such as ferrous,
Mn2+, sulfide, rhodanide, cyanide, chlorine, the inorganic matters such as Ag, olefine, amine, phenol, polycyclic aromatic hydrocarbons (PAH), alcohol, aldehyde, alkane
The organic matters such as class, bacterium, yeast, parasite and algae etc., the industrial sodium aluminate solution of mistake treated by ozone is without odor, color
The living bodies such as bright, bacterium and algae are without vital signs, and absorbance is between 0.001-2.999.
Active carbon filtering
Active carbon is a kind of porous solid carbonaceous of black, has large specific surface area, intensity height, epigranular, hole knot
The features such as structure is flourishing, absorption property is strong.Active carbon can effectively adsorb free chlorine, phenol, sulphur, oil, colloid, pesticide residue in water
With other organic contaminations and the recycling of organic solvent etc..It is preferable to use active fruit shell carbons in the present invention, and specific surface area is 300
~2000m2It between/g, is filtered through activated carbon filter media layer, can remove larger particles in industrial sodium aluminate solution, larger
The impurity such as molecule and/or the stronger pitch prill of viscosity.
Hydrogen peroxide oxidation
Hydrogen peroxide can resolve into water and oxygen, but decomposition rate is extremely slow.Hydrogen peroxide and many inorganic or organic compounds
When object reacts, peroxide bond retains and is transferred on another molecule, generates new peroxide, it is anti-that chain rupture occurs for new peroxide
It answers, to make many inorganic or organic compound dissociation.The hydrogen peroxide for being 35% present invention preferably uses technical grade content is molten
Liquid, i.e. hydrogen peroxide.Certainly, the hydrogen peroxide of technical grade content 27.5% also can be used.Dioxygen water process industrial sodium aluminate is molten
Liquid can make many inorganic or organic compound dissociation, as low-valent metal is converted into high-valency metal, the nothings such as rhodanide, cyanide
The dissociation of machine compound, the organic matters such as olefine, amine, phenols disintegrate, and bacterium and algae etc. lose vital signs.
Ultraviolet light irradiation
Ultraviolet light is the general name that electromagnetic spectrum medium wavelength is radiated from 10nm~400nm, cannot cause the vision of people.It is ultraviolet
Line can be used to sterilize, and after short wavelength ultraviolet (UV) irradiates the surface of solids, bacterium is oxidized with algae, is then broken down into
CO2And H2The volatile substances such as O, final volatilization disappear.DNA (DNA), ribonucleic acid (RNA) in bacterium and
The highest peak of the absorption ultraviolet light of nucleoprotein is in 254~257nm.After bacterium absorbs ultraviolet light, causes DNA chain to be broken, cause core
The crosslinking of acid and albumen ruptures, and kills the bioactivity of nucleic acid, causes bacterial death.Quick and convenient, because of physical contact therefore without two
Secondary pollution.Ultraviolet light is 30000 μ W/cm to germicidal efficiency, that is, radiation intensity of common bacteria virus2.The application utilizes short wavelength
Ultraviolet light (UV) kills the ability of bacterium and algae, irradiates to industrial sodium aluminate solution, to kill removing industrial sodium aluminate
Bacterium and algae in solution.
Aluminium hydroxide or aluminium oxide refined filtration
Aluminium hydroxide and aluminium oxide all have very strong adsorption capacity, can adsorb organic residual object in sodium aluminate solution,
The mineral products such as iron hydroxide can be adsorbed, the degree of purity of sodium aluminate solution is further promoted.The aluminium hydroxide or oxygen that refined filtration uses
Changing aluminium particle size requires D50 at 1.0~100 μm.The purpose of refined filtration is to remove or reduce floating material in industrial sodium aluminate solution, if any
The residual object of machine, iron hydroxide and lose the residual shells such as vital signs bacterium, yeast, parasite and algae.
Applicant of the present invention has found that organic matter, mushroom, algae are that industrial sodium aluminate solution color changes in practical study
Change, the increased major reason of viscosity give the method for ozone Oxidation Treatment for such problem.Ozone Oxidation Treatment is to aluminium
Organic matter degradation in acid sodium solution has special efficacy, by this method treated industrial sodium aluminate solution, bright state of color
It can match in excellence or beauty with sintering process, content of organics is substantially reduced, and is cleared away for Bayer process production of chemicals aluminium oxide and aluminium hydroxide
Obstacle.Ozone Oxidation Treatment is other than it can crack the organic matter in industrial sodium aluminate solution, mushroom, algae, to current each oxygen
Changing a series of inorganic matters containing divalent sulfur, chlorine root, low price arsenic, Low Valent Vanadium etc. in the generally existing industrial sodium aluminate solution of aluminium manufacturer influences
The problem of production, ozone Oxidation Treatment can also be solved effectively.
Using industrial sodium aluminate solution method of purification provided by the invention, after clean oxidation aluminium production procedure, dissolution production capacity,
Evaporative capacity is all improved to some extent, and output increased has great economic benefit 10% or more.Resolution ratio is followed after improving
Ring effect is also improved to some extent.It is particularly significant that red-mud separation process efficiency improves 20% or more.
In actual production, active carbon filtering, hydrogen peroxide oxidation, ultraviolet light irradiation, ozone Oxidation Treatment, aluminium hydroxide or
Aluminium oxide refined filtration, this five treatment processes can be with flexible combinations, such as can be according to cost, the quality requirement of product, selectivity
Ground is combined processing.
Industrial sodium aluminate solution after purification uses spectrophotometry, provides theoretical basis for on-line monitoring, from
And realize the visualization of process monitoring, digitlization.
Industrial sodium aluminate solution method of purification provided by the invention, equipment is simple, and seldom, operating cost is very low, is for investment
It implements in full and lays a good foundation.
Specific embodiment
It is described in detail below by technical solution of the specific embodiment to the application.
Embodiment 1
In the glass jar that the internal diameter of built-in blender is 200mm, high 500mm, the industrial aluminum that absorbance is 2.50 is added
Acid sodium solution, height of the industrial sodium aluminate solution in glass jar are 150mm.It is then turned on stirring, speed of agitator is 20 turns/
Point, while being passed through ozone gas into the industrial sodium aluminate solution, carry out gas-liquid mixed reaction, reaction temperature control for 25 DEG C~
50 DEG C, the reaction time 40 minutes, the intake of ozone gas was 70g, stops that ozone gas is added later, stops stirring, take molten
Liquid spectrophotometric determination, absorbance 0.008.Industrial sodium aluminate solution color is bright, is faint yellow.
Embodiment 2
By specific surface area in 300~2000m2Active fruit shell carbon between/g and water mixing pulp, are poured into polypropylene fibre
In the Buchner funnel of filter cloth, the activated carbon filter media layer with a thickness of 10mm is formed, the industrial sodium aluminate for being 2.18 by absorbance
Solution is filtered by activated carbon filter media layer；
Then it in the glass jar that the internal diameter of built-in blender is 200mm, high 500mm, is added through activated carbon filter media
The filtered industrial sodium aluminate solution of layer, height of the industrial sodium aluminate solution in glass jar are 150mm, are then turned on stirring,
Speed of agitator is 20 revs/min, while ozone gas is passed through into the industrial sodium aluminate solution, carries out gas-liquid mixed reaction, reaction
Temperature control is 25 DEG C~50 DEG C, and the reaction time 40 minutes, the intake of ozone gas was 70g, stops that ozone gas is added later
Body stops stirring, takes solution spectrophotometric determination, absorbance 0.005.Industrial sodium aluminate solution color is bright, is
It is faint yellow.
Embodiment 3
By specific surface area in 300~2000m2Active fruit shell carbon between/g and water mixing pulp, are poured into polypropylene fibre
In the Buchner funnel of filter cloth, the activated carbon filter media layer with a thickness of 15mm is formed, the industrial sodium aluminate for being 0.89 by absorbance
Solution is filtered by activated carbon filter media layer；
Then it in the glass jar that the internal diameter of built-in blender is 200mm, high 500mm, is added through activated carbon filter media
The filtered industrial sodium aluminate solution of layer, height of the industrial sodium aluminate solution in glass jar are 150mm, are then turned on stirring,
Speed of agitator is 20 revs/min, and the hydrogenperoxide steam generator 200ml that technical grade content is 35% is added into industrial sodium aluminate solution,
Reaction 10 minutes；
It is passed through ozone gas into the industrial sodium aluminate solution again later, carries out gas-liquid mixed reaction, reaction temperature control
It is 25 DEG C~50 DEG C, the reaction time 20 minutes, the intake of ozone gas was 35g, stops that ozone gas is added later, stops stirring
It mixes, takes solution spectrophotometric determination, absorbance 0.006.Industrial sodium aluminate solution color is bright, is faint yellow.
Embodiment 4
By specific surface area in 300~2000m2Active fruit shell carbon between/g and water mixing pulp, are poured into polypropylene fibre
In the Buchner funnel of filter cloth, the activated carbon filter media layer with a thickness of 20mm is formed, the industrial sodium aluminate for being 1.60 by absorbance
Solution is filtered by activated carbon filter media layer；
Then it in the glass jar that the internal diameter of built-in blender is 200mm, high 500mm, is added through activated carbon filter media
The filtered industrial sodium aluminate solution of layer, height of the industrial sodium aluminate solution in glass jar are 150mm, are then turned on stirring,
Speed of agitator is 20 revs/min, and the hydrogenperoxide steam generator 200ml that technical grade content is 35% is added into industrial sodium aluminate solution,
Reaction 10 minutes；
It is passed through ozone gas into the industrial sodium aluminate solution again later, carries out gas-liquid mixed reaction, reaction temperature control
It is 25 DEG C~50 DEG C, the reaction time 30 minutes, the intake of ozone gas was 52.5g, stops that ozone gas is added later, stops
Stirring；
Taking granularity D50 is that 20 μm of aluminium hydroxide pours into the Buchner funnel with polypropylene fibre filter cloth with water mixing pulp
In, formed with a thickness of 30mm aluminium hydroxide filtering medium layer, it is treated by ozone after industrial sodium aluminate solution through aluminium hydroxide
Filtering medium layer filtering, takes solution spectrophotometric determination, absorbance 0.002.Industrial sodium aluminate solution color is bright,
For off-white color.
Embodiment 5
By specific surface area in 300~2000m2Active fruit shell carbon between/g and water mixing pulp, are poured into polypropylene fibre
In the Buchner funnel of filter cloth, the activated carbon filter media layer with a thickness of 30mm is formed, the industrial sodium aluminate for being 1.88 by absorbance
Solution is filtered by activated carbon filter media layer；
Then it in the glass jar that the internal diameter of built-in blender is 200mm, high 500mm, is added through activated carbon filter media
The filtered industrial sodium aluminate solution of layer, height of the industrial sodium aluminate solution in glass jar are 150mm, are then turned on stirring,
Speed of agitator is 20 revs/min, and the hydrogenperoxide steam generator 300ml that technical grade content is 35% is added into industrial sodium aluminate solution,
Reaction 10 minutes；
Open 30000 μ W/cm2Short wavelength ultravioletlamp irradiates 20 points to hydrogen peroxide treated industrial sodium aluminate solution
Clock；
It is passed through ozone gas into the industrial sodium aluminate solution again later, carries out gas-liquid mixed reaction, reaction temperature control
It is 25 DEG C~50 DEG C, the reaction time 30 minutes, the intake of ozone gas was 52.5g, stops that ozone gas is added later, stops
Stirring；
Taking granularity D50 is that 40 μm of aluminium oxide pours into the Buchner funnel with polypropylene fibre filter cloth with water mixing pulp,
Formed with a thickness of 40mm alumina filter media layer, it is treated by ozone after industrial sodium aluminate solution through alumina filter media
Layer filtering, takes solution spectrophotometric determination, absorbance 0.001.Industrial sodium aluminate solution color is bright, is that class is white
Color.
In embodiment 1- embodiment 5, to further increase ozone Oxidation Treatment effect, faster processing time can be to work
Ozone oxidation catalyst is added in industry sodium aluminate solution.
Above embodiments explanation, industrial sodium aluminate solution method of purification provided by the present application can effective purified industrial aluminium
Acid sodium solution solves the problems, such as to perplex Bayer process alumina producing at present, and economic prospect is good.It and is further exploitation aluminium oxide
Product variety provides hope and may.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent transformation made by bright description, is applied directly or indirectly in other relevant technical fields, and is included in this hair
In bright scope of patent protection.
Claims (10)
1. a kind of industrial sodium aluminate solution method of purification, which is characterized in that the method for purification comprising steps of
Ozone Oxidation Treatment: being passed through ozone gas into industrial sodium aluminate solution, carries out gas-liquid mixed reaction, and ozone gas leads to
Enter amount be 0.01~10000g/l, reaction temperature be 0~100 DEG C, the reaction time 0.0001~5 hour, the work obtained after reaction
The absorbance of industry sodium aluminate solution is controlled 0.001~2.999.
2. industrial sodium aluminate solution method of purification according to claim 1, which is characterized in that ozone Oxidation Treatment process
In, ozone oxidation catalyst is added into industrial sodium aluminate solution.
3. industrial sodium aluminate solution method of purification according to claim 2, which is characterized in that the ozone oxidation catalyst
For the mixing of any one or more of Titanium, vanadium, copper, zinc, iron, nickel, manganese.
4. industrial sodium aluminate solution method of purification according to claim 1 to 3, which is characterized in that the method for purification
Comprising steps of
Active carbon filtering: industrial sodium aluminate solution is filtered processing by the activated carbon filter media layer of 0.5~50mm thickness.
5. industrial sodium aluminate solution method of purification according to claim 4, which is characterized in that the method for purification includes step
It is rapid:
Aluminium hydroxide or aluminium oxide refined filtration: industrial sodium aluminate solution passes through the aluminium hydroxide or aluminium oxide mistake of 0.5~50mm thickness
Filter medium layer is filtered processing, and the granularity D50 of aluminium hydroxide or aluminium oxide is in aluminium hydroxide or alumina filter media layer
1.0~100 μm.
6. industrial sodium aluminate solution method of purification according to claim 5, which is characterized in that the method for purification includes step
It is rapid:
Hydrogen peroxide oxidation: hydrogen peroxide being added into industrial sodium aluminate solution, mixes well, and the mass percent of the hydrogen peroxide is dense
Degree is 25~35%, and the additional amount of hydrogen peroxide is the 0.001~10% of industrial sodium aluminate solution volume, 5~15 points of the reaction time
Clock.
7. industrial sodium aluminate solution method of purification according to claim 6, which is characterized in that the method for purification includes step
It is rapid:
Ultraviolet light irradiation: industrial sodium aluminate solution is 5000~90000 μ W/cm in radiation intensity2Under short wavelength ultraviolet, irradiation 5
~60 minutes, industrial sodium aluminate solution irradiation depth was 1~10000mm.
8. industrial sodium aluminate solution method of purification according to claim 7, which is characterized in that when active carbon filters, activity
The specific surface area of charcoal is in 300~2000m2Between/g.
9. a kind of industrial sodium aluminate solution method of purification, which is characterized in that the method for purification comprising steps of
S1: active carbon filtering: industrial sodium aluminate solution is filtered place by the activated carbon filter media layer of 0.5~50mm thickness
Reason；
S2: hydrogen peroxide oxidation: being added hydrogen peroxide in through step S1 treated industrial sodium aluminate solution, mix well, described
The mass percent concentration of hydrogen peroxide is 25~35%, the additional amount of hydrogen peroxide be industrial sodium aluminate solution volume 0.001~
10%, the reaction time 5~15 minutes；
S3: ultraviolet light irradiation: industrial sodium aluminate solution after step S2 processing is 5000~90000 μ W/cm in radiation intensity2
It under short wavelength ultraviolet, irradiates 5~60 minutes, industrial sodium aluminate solution irradiation depth is 1~10000mm；
S4: ozone Oxidation Treatment: it is passed through ozone gas in through step S3 treated industrial sodium aluminate solution, it is mixed to carry out gas-liquid
Reaction is closed, the intake of ozone gas is 0.01~10000g/l, and reaction temperature is 0~100 DEG C, the reaction time 0.0001~5
Hour, the absorbance of the industrial sodium aluminate solution obtained after reaction is controlled 0.001~2.999；
S5: aluminium hydroxide or aluminium oxide refined filtration: through step S4 treated industrial sodium aluminate solution by 0.5~50mm thickness
Aluminium hydroxide or alumina filter media layer are filtered processing, in aluminium hydroxide or alumina filter media layer aluminium hydroxide or
The granularity D50 of aluminium oxide is 1.0~100 μm.
10. industrial sodium aluminate solution method of purification according to claim 9, which is characterized in that the filtering of step S1 active carbon
When, the specific surface area of active carbon is in 300~2000m2Between/g；During step S4 ozone Oxidation Treatment, to industrial sodium aluminate
Ozone oxidation catalyst is added in solution.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110156057A (en) * | 2019-06-18 | 2019-08-23 | 苏州贝尔德新材料科技有限公司 | The preparation method of high purity aluminium oxide |
| CN110498741A (en) * | 2019-08-22 | 2019-11-26 | 中国铝业股份有限公司 | A kind of method of purification of aluminium oxide process outlet sodium oxalate |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580293A (en) * | 2009-06-01 | 2009-11-18 | 中国铝业股份有限公司 | Decolorization method for sodium aluminate solution |
| CN101624200A (en) * | 2008-07-10 | 2010-01-13 | 住友化学株式会社 | Method for producing discolored sodium aluminate aqueous solution |
| CN101720306A (en) * | 2007-04-18 | 2010-06-02 | H2Q水工业有限公司 | Filtration medium |
| CN101792162A (en) * | 2010-03-22 | 2010-08-04 | 河南未来铝业（集团）有限公司 | Composite decoloring method for sodium aluminate solution |
| CN102502732A (en) * | 2011-10-21 | 2012-06-20 | 河南煤业化工集团研究院有限责任公司 | Purification method of high-concentration sodium aluminate solution from Bayer process |
| CN103097017A (en) * | 2010-09-16 | 2013-05-08 | 荷兰联合利华有限公司 | An alumina block filter media |
| CN104386725A (en) * | 2014-10-10 | 2015-03-04 | 洛阳中超非金属材料有限公司 | Method for preparing high-whiteness ultrafine aluminum hydroxide from aluminum hydroxide prepared by Bayer process |
| CN104470857A (en) * | 2012-07-23 | 2015-03-25 | 荷兰联合利华有限公司 | Biocidal filter medium |
| CN105036165A (en) * | 2015-08-20 | 2015-11-11 | 洛阳中超新材料股份有限公司 | Decolorizing method for high-concentration sodium aluminate solution |
| CN106830028A (en) * | 2016-12-28 | 2017-06-13 | 中国铝业股份有限公司 | A kind of titanium dioxide cladding alumina-producing method |
-
2017
- 2017-08-16 CN CN201710703391.7A patent/CN109399676A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101720306A (en) * | 2007-04-18 | 2010-06-02 | H2Q水工业有限公司 | Filtration medium |
| CN101624200A (en) * | 2008-07-10 | 2010-01-13 | 住友化学株式会社 | Method for producing discolored sodium aluminate aqueous solution |
| CN101580293A (en) * | 2009-06-01 | 2009-11-18 | 中国铝业股份有限公司 | Decolorization method for sodium aluminate solution |
| CN101792162A (en) * | 2010-03-22 | 2010-08-04 | 河南未来铝业（集团）有限公司 | Composite decoloring method for sodium aluminate solution |
| CN103097017A (en) * | 2010-09-16 | 2013-05-08 | 荷兰联合利华有限公司 | An alumina block filter media |
| CN102502732A (en) * | 2011-10-21 | 2012-06-20 | 河南煤业化工集团研究院有限责任公司 | Purification method of high-concentration sodium aluminate solution from Bayer process |
| CN104470857A (en) * | 2012-07-23 | 2015-03-25 | 荷兰联合利华有限公司 | Biocidal filter medium |
| CN104386725A (en) * | 2014-10-10 | 2015-03-04 | 洛阳中超非金属材料有限公司 | Method for preparing high-whiteness ultrafine aluminum hydroxide from aluminum hydroxide prepared by Bayer process |
| CN105036165A (en) * | 2015-08-20 | 2015-11-11 | 洛阳中超新材料股份有限公司 | Decolorizing method for high-concentration sodium aluminate solution |
| CN106830028A (en) * | 2016-12-28 | 2017-06-13 | 中国铝业股份有限公司 | A kind of titanium dioxide cladding alumina-producing method |
Non-Patent Citations (3)
| Title |
|---|
| 杜振华等: "H2O2湿式氧化法脱除铝酸钠溶液中的有机物", 《湿法冶金》 * |
| 洪家宝: "《精细化工后处理装备》", 30 November 1990, 化学工业出版社 * |
| 王浩伟等: "《环境控制工程材料》", 31 January 2017 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110156057A (en) * | 2019-06-18 | 2019-08-23 | 苏州贝尔德新材料科技有限公司 | The preparation method of high purity aluminium oxide |
| CN110498741A (en) * | 2019-08-22 | 2019-11-26 | 中国铝业股份有限公司 | A kind of method of purification of aluminium oxide process outlet sodium oxalate |
| CN110498741B (en) * | 2019-08-22 | 2022-03-15 | 中国铝业股份有限公司 | Purification method of discharged sodium oxalate in alumina process |
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