CN108706552A - A kind of technique of integrated treatment red mud, flyash and high-sulfur bauxite - Google Patents
A kind of technique of integrated treatment red mud, flyash and high-sulfur bauxite Download PDFInfo
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- CN108706552A CN108706552A CN201810711305.1A CN201810711305A CN108706552A CN 108706552 A CN108706552 A CN 108706552A CN 201810711305 A CN201810711305 A CN 201810711305A CN 108706552 A CN108706552 A CN 108706552A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
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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
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
- C01F7/142—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
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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
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
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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
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/26—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with sulfuric acids or sulfates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
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- 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
Abstract
The invention discloses the techniques of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, include the following steps：1）Ardealite, red mud, flyash, high-sulfur bauxite, additive and modifying agent are mixed and ground, raw material are made, the weight ratio for controlling ardealite in raw material, red mud, flyash and high-sulfur bauxite is 1:0.2-0.5:0.2-0.4：0.3-0.8, additive adding proportion press contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 9-16% of raw material total weight；Raw material are sent into kiln and are roasted, clinker is made；2）By step 1）It dissolves out, and is separated by solid-liquid separation after clinker grinding obtained.The present invention has opened up the new opplication of ardealite, red mud, flyash and high-sulfur bauxite, has treatment process simple, at low cost, and added value is high, and the valuable material rate of recovery is high, the high feature of the aluminium component purity of recycling.
Description
Technical field
The present invention relates to the techniques of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, belong to field of metallurgy and chemical engineering.
Background technology
Ardealite refer in phosphoric acid production with sulfuric acid treating phosphorite when the solid slag that generates, main component is sulfuric acid
Calcium (CaSO4), content generally can reach 70~90% or so.In addition, ardealite also contains plurality of impurities：Undecomposed phosphorus
Mine, phosphoric acid, calcirm-fluoride, iron, aluminium compound, acid non-soluble substance, organic matter of non-washes clean etc..
Red mud is the waste residue of generation during bauxite aluminium, and the red mud generated during Bayer process production aluminium is called Bayer
Red mud.Although the iron content in common red mud is less, usually less than 7% or so, wherein containing a large amount of sial element.
Flyash is to capture the solids to get off in the flue gas after coal combustion, is concentrated mainly on the area of coal fired power generation,
In contain the valuable constituents such as a large amount of aluminium, iron, silicon.The flyash that China generates every year is about more than 100,000,000 tons, and the overwhelming majority passes through
Stockpiling mode is handled, and seriously polluted local environment.And for the processing of flyash, it is now concentrated mainly at present for cement etc.
The raw material of building materials.
High-sulfur bauxite refers to the bauxite that sulfur content is more than 0.7%, and sulphur therein is mainly with pyrite and its isomers
Marcasite and melnikovite form exist.In being generated in aluminium oxide, after sulfur content reaches a certain level, it will to life
Production, which arrives, greatly to endanger, or even makes production that can not carry out, therefore, must if high-sulfur bauxite is used as alumina producing
Desulfurization process must be carried out, still, either preroast desulfurization, floatation desulphurization, additive desulfurization, decomposition nut liquid freezing and crystallizing are de-
Other sulfur removal technologies such as sulphur or evaporation-timeliness-separation desulfurization, have that desulfuration efficiency is high, expensive, sulfur removal technology
Complicated defect.It is existing currently, high-grade ore accounts for 57,2% in China's high-sulfur bauxite, it is increasingly exhausted for GOOD TASTE bauxite
How high-sulfur bauxite is efficiently used for development aluminum oxide industry with important significant today.
Although containing a large amount of valuable material, such as sulphur, iron, aluminium, silicon in ardealite, red mud and flyash；But China
Annual about 20,000,000 tons of ardealite of discharge, adds up nearly hundred million tons of discharge capacity.And 1 ton of aluminium oxide is often produced, about generate red mud 0.8-1.5
Ton.The year yield of China's red mud is tens million of tons, and accumulative volume of cargo in storage is up to several hundred million tons.And the flyash generated every year is about one
More than hundred million tons, the high-sulfur bauxite accumulated because difficult is also flood tide.
Since the amount of ardealite, red mud, flyash and high-sulfur bauxite is huge, meanwhile, now at present for ardealite, red
The application of mud, flyash and high-sulfur bauxite is less, paves the way mainly for the production of building building cement and directly, and passes through phosphorus stone
The complex process of cream, red mud, flyash and high-sulfur bauxite extraction recycling valuable material, it is of high cost.Result in now current phosphorus stone
Cream, red mud, the consumption of flyash and high-sulfur bauxite are few, and ardealite, red mud, the application of flyash and high-sulfur bauxite are additional
It is worth low defect.And comprehensively utilize ardealite, red mud, flyash and high-sulfur bauxite, extraction recycling valuable material
Research has not been reported.
Goal of the invention
The object of the present invention is to provide the techniques of a kind of integrated treatment red mud, flyash and high-sulfur bauxite.The present invention
The new opplication of ardealite, red mud, flyash and high-sulfur bauxite has been opened up, has had treatment process simple, at low cost, added value
Height, and the valuable material rate of recovery is high, the high feature of the aluminium component purity of recycling.
Technical scheme of the present invention
The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, includes the following steps：
1) ardealite, red mud, flyash, high-sulfur bauxite, additive and modifying agent are mixed and is ground and raw material are made, controlled
Ardealite in raw material processed, red mud, flyash and high-sulfur bauxite weight ratio be 1:0.2-0.5:0.2-0.4：0.3-0.8 adds
Add agent adding proportion by contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent
For the 9-16% of raw material total weight；Raw material are sent into kiln and are roasted, clinker is made；
2) it will dissolve out, and be separated by solid-liquid separation after clinker grinding made from step 1).
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, in step 1), the red mud is Bayer
Method red mud, wherein Fe2O3Content be less than 7%；Sulfur content is higher than 0.7% in the high-sulfur bauxite；The additive is carbonic acid
Sodium, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, in step 1), the kiln is that industry is turned round
Kiln, Industry Tunnel Kiln or industrial shaft kiln.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, in step 1), the raw material are in temperature
Roasting time 2-4 hours at 1100-1250 DEG C.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, it is described to be ground to water mill in step 2),
When dissolution with it is water-soluble go out.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, in step 2), the liquid when dissolution is solid
Volume ratio is 4-6:1.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, be separated by solid-liquid separation in step 2) obtain it is heavy
It forms sediment and carries out flotation, isolate iron sulfide, the flue gas after iron sulfide is roasted is used for relieving haperacidity, and residue is iron oxide.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, the iron sulfide are placed in 30-40%'s
It under oxygen-enriched environment, is roasted 1-3 hours at 800-900 DEG C, roasts the flue gas of generation after vanadic anhydride catalysis reaction with dense
Sulfuric acid is made in sulfuric acid absorption.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, to liquid isolated in step 2)
Middle addition CO2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains aluminium hydroxide, by gained
Aluminium hydroxide roasting obtains aluminium oxide.
The technique of integrated treatment red mud above-mentioned, flyash and high-sulfur bauxite, the roasting are in 800-900 DEG C of temperature
Lower roasting time 1-3 hours.
The present invention is by by ardealite and red mud reaction, recombination, making utility.The net reaction of principle is：
CaSO4(ardealite)+Na2O·SiO2·Al2O3(red mud, flyash, high-sulfur bauxite) → Na2O·Al2O3+
CaO·SiO2↓+[Liu ]
From the reaction equation it is found that with the CaO and SiO in red mud, flyash and high-sulfur bauxite in ardealite2It generates former
Calcium silicates (2CaOSiO2↓) after, obtain soluble fabulous sodium aluminate (Na2O·Al2O3).[ in reaction equation;Liu ], refer to
Pass through raw material plus modifying agent technique, the metal sulfide of generation, main component FeS；It, will after leaching the sodium aluminate in clinker
Obtained sediment flotation can be obtained FeS.
Advantageous effect
1, the present invention is by using ardealite, red mud, flyash and high-sulfur bauxite as primary raw material, by being added
Dissolution is ground after agent and modifying agent roasting, you can obtains the mainly solution containing sodium aluminate, for recycling aluminium, and precipitating residue is through floating
It can be used to production sulfuric acid after choosing and recycle iron, extracted to which main valuable material sulphur, silicon and aluminium have been carried out effective recycling,
Open the new direction of ardealite, red mud, flyash and high-sulfur bauxite comprehensive utilization.
2, the present invention only needs that modifying agent and addition is added after mixing ardealite, red mud, flyash and high-sulfur bauxite
Agent roasts, and then dissolution is separated by solid-liquid separation, and solid portion and liquid portion can will have by conventional extraction process
Valence material composition carries out separation and Extraction, simple for process, and key reaction material is all waste residue, greatly reduce integrated application at
This, and improve the added value of ardealite, red mud, flyash and high-sulfur bauxite.
3, the present invention makes substance recombinate by roasting, forms main silicate, metal sulfide and sodium aluminate ingredient, and
Sodium aluminate can be directly dissolved in water, and other compositions can detach main iron sulfide after flotation in solid residue,
Relieving haperacidity carries iron after roasting, easily separated because ingredient is clearly demarcated, substantially increases the rate of recovery of each ingredient, simultaneously as readily soluble
It is mainly sodium aluminate in the ingredient of water, other compositions are seldom, almost without the purity of the aluminium of recycling is substantially increased.
Tests prove that after present invention process processing, the purity of the aluminium oxide recycled can reach 99% or more.
Specific implementation mode
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
The embodiment of the present invention
Embodiment 1：
The Principle components analysis table of the present embodiment red mud
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 26.2% | 6.1% | 19.7% | 21.0% | 5.4% | 6.1% | 0.6% | 11.1% |
The Principle components analysis table of the present embodiment flyash
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 64.2% | 5.1% | 4.0% | 17.7% | 9% |
The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, steps are as follows：
1) ardealite, red mud, flyash, high-sulfur bauxite, sodium carbonate and anthracite are mixed and is ground and raw material are made, controlled
Ardealite in raw material processed, red mud, flyash and high-sulfur bauxite weight ratio be 1:0.2:0.2：0.3, additive adding proportion
By contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, modifying agent is raw material total weight
9%；Raw material are sent into industrial rotary kiln roasting time 4 hours at 1100 DEG C of temperature, clinker is made；
2) by clinker water mill made from step 1), when dissolution with it is water-soluble go out, it is 4 that liquid when dissolution, which consolidates volume ratio,:1, it goes forward side by side
Row is separated by solid-liquid separation.
Embodiment 2：
The Principle components analysis table of the present embodiment red mud
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 23.8% | 6.7% | 16.5% | 20.4% | 6.1% | 5.5% | 0.6% | 10.1% |
The Principle components analysis table of the present embodiment flyash
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | C | P | S |
| Content | 21.4% | 17.1% | 12.7% | 26.1% | 1.5% | 0.5% | 0.7% | 0.1% | 0.4% | 3.1% |
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 61.5% | 7.2% | 2.0% | 18.2% | 10.1% |
The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, steps are as follows：
1) ardealite, red mud, flyash, high-sulfur bauxite, sodium sulphate and carbon are mixed and is ground and raw material are made, control life
Ardealite in material, red mud, flyash and high-sulfur bauxite weight ratio be 1:0.4:0.3：0.5, additive adding proportion is by life
Contained Na in material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, modifying agent is raw material total weight
14%；Raw material are sent into Industry Tunnel Kiln roasting time 3 hours at 1180 DEG C of temperature, clinker is made；
2) by clinker water mill made from step 1), when dissolution with it is water-soluble go out, it is 5 that liquid when dissolution, which consolidates volume ratio,:1, it goes forward side by side
Row is separated by solid-liquid separation.
Embodiment 3：
The Principle components analysis table of the present embodiment red mud
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 26.1% | 7.0% | 18.9% | 21.8% | 5.6% | 6.1% | 0.6% | 10.3% |
The Principle components analysis table of the present embodiment flyash
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | C | P | S |
| Content | 22.3% | 16.8% | 14.6% | 21.8% | 1.8% | 0.7% | 0.7% | 0.1% | 0.4% | 3.4% |
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 66.2% | 4.1% | 0.8% | 16.4% | 12.5% |
The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, steps are as follows：
1) ardealite, red mud, flyash, high-sulfur bauxite, caustic soda and gangue are mixed and is ground and raw material are made, controlled
Ardealite in raw material, red mud, flyash and high-sulfur bauxite weight ratio be 1:0.5:0.4：0.8, additive adding proportion is pressed
Contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:The mixed proportion of 1 addition, modifying agent is raw material total weight
16%；Raw material are sent into industrial shaft kiln roasting time 2 hours at 1250 DEG C of temperature, clinker is made；
2) by clinker water mill made from step 1), when dissolution with it is water-soluble go out, it is 6 that liquid when dissolution, which consolidates volume ratio,:1, it goes forward side by side
Row is separated by solid-liquid separation.
Embodiment 4：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, by 1/2/3 solid-liquid of embodiment point
Flotation is carried out from obtained precipitation, iron sulfide is isolated, iron sulfide is placed under 30% oxygen-enriched environment, 3 are roasted at 800 DEG C
Hour, the flue gas for roasting generation absorbs obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is iron oxide.
In the present embodiment, the rate of recovery of iron oxide is 97.6%.
Embodiment 5：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, by 1/2/3 solid-liquid of embodiment point
Flotation is carried out from obtained precipitation, iron sulfide is isolated, iron sulfide is placed under 35% oxygen-enriched environment, 2 are roasted at 850 DEG C
Hour, the flue gas for roasting generation absorbs obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is iron oxide.
In the present embodiment, the rate of recovery of iron oxide is 97.1%.
Embodiment 6：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, by 1/2/3 solid-liquid of embodiment point
Flotation is carried out from obtained precipitation, iron sulfide is isolated, iron sulfide is placed under 40% oxygen-enriched environment, 1 is roasted at 900 DEG C
Hour, the flue gas for roasting generation absorbs obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is iron oxide.
In the present embodiment, the rate of recovery of iron oxide is 96.9%.
Embodiment 7：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, to 1/2/3 solid-liquid of embodiment point
From CO is added in obtained liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydroxide
Aluminium, by the aluminium hydroxide of gained at 800 DEG C of temperature roasting time 3 hours, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 94.5% in the present embodiment, purity 99.1%.
Embodiment 8：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, to 1/2/3 solid-liquid of embodiment point
From CO is added in obtained liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydroxide
Aluminium, by the aluminium hydroxide of gained at 850 DEG C of temperature roasting time 2 hours, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 945.2% in the present embodiment, purity 99.3%.
Embodiment 9：The technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, to 1/2/3 solid-liquid of embodiment point
From CO is added in obtained liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydroxide
Aluminium, by the aluminium hydroxide of gained at 900 DEG C of temperature roasting time 1 hour, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 94.1% in the present embodiment, purity 99.9%.
Claims (10)
1. the technique of a kind of integrated treatment red mud, flyash and high-sulfur bauxite, which is characterized in that include the following steps：
1）Ardealite, red mud, flyash, high-sulfur bauxite, additive and modifying agent are mixed and ground, raw material are made, control life
Ardealite in material, red mud, flyash and high-sulfur bauxite weight ratio be 1:0.2-0.5:0.2-0.4：0.3-0.8, additive
Adding proportion presses contained Na in raw material2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are made a living
Expect the 9-16% of total weight；Raw material are sent into kiln and are roasted, clinker is made；
2）By step 1）It dissolves out, and is separated by solid-liquid separation after clinker grinding obtained.
2. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 1）In, the red mud is Bayer process red mud, wherein Fe2O3Content be less than 7%；Sulfur content is higher than in the high-sulfur bauxite
0.7%；The additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or gangue.
3. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 1）In, the kiln is industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
4. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 1）In, the raw material are roasting time 2-4 hours at 1100-1250 DEG C of temperature.
5. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 2）In, it is described to be ground to water mill, when dissolution with it is water-soluble go out.
6. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 2）In, it is 4-6 that the liquid when dissolution, which consolidates volume ratio,:1.
7. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：Step
Rapid 2）The middle obtained precipitation that is separated by solid-liquid separation carries out flotation, isolates iron sulfide, the flue gas after iron sulfide is roasted is used for relieving haperacidity, residual
Slag is iron oxide.
8. the technique of integrated treatment red mud according to claim 7, flyash and high-sulfur bauxite, it is characterised in that：Institute
It states iron sulfide to be placed under the oxygen-enriched environment of 30-40%, is roasted 1-3 hours at 800-900 DEG C, roast the flue gas of generation through five
It is absorbed with the concentrated sulfuric acid after V 2 O catalysis reaction and sulfuric acid is made.
9. the technique of integrated treatment red mud according to claim 1, flyash and high-sulfur bauxite, it is characterised in that：To
Step 2）In CO is added in isolated liquid2It is no longer generated to white precipitate, cleans and dry after then filtering out white precipitate
It is dry, aluminium hydroxide is obtained, by the Aluminium hydroxide roasting of gained, obtains aluminium oxide.
10. the technique of integrated treatment red mud according to claim 9, flyash and high-sulfur bauxite, it is characterised in that：Institute
It is roasting time 1-3 hours at 800-900 DEG C of temperature to state roasting.
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| CN110540223A (en) * | 2019-08-19 | 2019-12-06 | 太原理工大学 | method for simultaneously extracting aluminum oxide from two aluminum-containing waste residues of fly ash and red mud |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01286935A (en) * | 1988-05-12 | 1989-11-17 | Minolta Camera Co Ltd | Ultraviolet transmission glass |
| CN101041449A (en) * | 2007-02-26 | 2007-09-26 | 长安大学 | Method for extracting aluminium oxide from coal ash and producing cement by using waste slag |
| CN101302021A (en) * | 2008-06-30 | 2008-11-12 | 贵州大学 | Method for extracting aluminum oxide from fly ash |
| CN101337685A (en) * | 2008-08-11 | 2009-01-07 | 昆明理工大学 | Process for producing calcium carbonate by absorbing carbon dioxide with ardealite decompose slag |
| CN101434403A (en) * | 2008-12-16 | 2009-05-20 | 重庆市博赛矿业（集团）有限公司 | Novel method for processing calx sodica sintered alumina by dry method |
| CN103833056A (en) * | 2014-03-06 | 2014-06-04 | 贵州大学 | Method for producing alumina by use of high sulfur bauxite |
-
2018
- 2018-07-03 CN CN201810711305.1A patent/CN108706552A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01286935A (en) * | 1988-05-12 | 1989-11-17 | Minolta Camera Co Ltd | Ultraviolet transmission glass |
| CN101041449A (en) * | 2007-02-26 | 2007-09-26 | 长安大学 | Method for extracting aluminium oxide from coal ash and producing cement by using waste slag |
| CN101302021A (en) * | 2008-06-30 | 2008-11-12 | 贵州大学 | Method for extracting aluminum oxide from fly ash |
| CN101337685A (en) * | 2008-08-11 | 2009-01-07 | 昆明理工大学 | Process for producing calcium carbonate by absorbing carbon dioxide with ardealite decompose slag |
| CN101434403A (en) * | 2008-12-16 | 2009-05-20 | 重庆市博赛矿业（集团）有限公司 | Novel method for processing calx sodica sintered alumina by dry method |
| CN103833056A (en) * | 2014-03-06 | 2014-06-04 | 贵州大学 | Method for producing alumina by use of high sulfur bauxite |
Non-Patent Citations (1)
| Title |
|---|
| 宁平等: "《高硫煤分解磷石膏制SO2联产水泥熟料》", 31 March 2012, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540223A (en) * | 2019-08-19 | 2019-12-06 | 太原理工大学 | method for simultaneously extracting aluminum oxide from two aluminum-containing waste residues of fly ash and red mud |
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