CN108751142A - A kind of technique of integrated treatment ardealite, iron red mud and high-sulfur bauxite - Google Patents
A kind of technique of integrated treatment ardealite, iron red mud and high-sulfur bauxite Download PDFInfo
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- CN108751142A CN108751142A CN201810711303.2A CN201810711303A CN108751142A CN 108751142 A CN108751142 A CN 108751142A CN 201810711303 A CN201810711303 A CN 201810711303A CN 108751142 A CN108751142 A CN 108751142A
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- China
- Prior art keywords
- red mud
- iron red
- sulfur bauxite
- iron
- ardealite
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- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 75
- 239000011593 sulfur Substances 0.000 title claims abstract description 75
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 51
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 19
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 12
- 238000004090 dissolution Methods 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 8
- 238000005188 flotation Methods 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 7
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical group C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003830 anthracite Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- 238000004131 Bayer process Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000003245 coal Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 239000004411 aluminium Substances 0.000 abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 229910052742 iron Inorganic materials 0.000 description 10
- 229910052681 coesite Inorganic materials 0.000 description 8
- 229910052906 cristobalite Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 8
- 229910001388 sodium aluminate Inorganic materials 0.000 description 8
- 229910052682 stishovite Inorganic materials 0.000 description 8
- 229910052905 tridymite Inorganic materials 0.000 description 8
- 229910052593 corundum Inorganic materials 0.000 description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001399 aluminium compounds Chemical class 0.000 description 1
- -1 calcirm-fluoride Chemical compound 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical group [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 102000057593 human F8 Human genes 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229940047431 recombinate Drugs 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C01B17/78—Preparation by contact processes characterised by the catalyst used
- C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
-
- 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
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
-
- 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]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/12—Sulfides
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of integrated treatment ardealite, the techniques of iron red mud and high-sulfur bauxite, include the following steps：1）Ardealite, iron red mud, high-sulfur bauxite, additive and modifying agent are mixed and ground, raw material are made, the weight ratio for controlling ardealite, iron red mud and high-sulfur bauxite in raw material is 1:0.2-0.6:0.4-0.9, 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 12-22% 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, iron red mud 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 a kind of integrated treatment ardealite, the techniques of iron red mud and high-sulfur bauxite, belong to chemical metallurgy
Field.
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..
Iron red mud is one kind in red mud type, is gained the name because iron content is very high, iron content can reach
30% or so, it is the very high iron red mud of iron content such as the red mud in Guangxi and Yunnan Province.Meanwhile it generally being deposited in red mud
In a large amount of silicon and aluminium.
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, iron red mud and high-sulfur bauxite；
But about 20,000,000 tons of ardealite is discharged in China every year, adds up nearly hundred million tons of discharge capacity.And 1 ton of aluminium oxide is often produced, it about generates high
1.0-2.0 tons of iron red mud.The year yield of China's iron red mud is tens million of tons, and accumulative volume of cargo in storage is up to several hundred million tons.And high-sulfur
Bauxite is difficult directly to utilize again.
Since ardealite, iron red mud and high-sulfur bauxite yield are huge, meanwhile, it is now red for ardealite, high ferro at present
The application of mud is less, paves the way mainly for the production of building building cement and directly, and has by ardealite, iron red mud extraction recycling
The complex process of valence substance, it is of high cost.Meanwhile high-sulfur bauxite is difficult application.Result in now current ardealite, iron red mud and
The consumption of high-sulfur bauxite is few, ardealite, iron red mud the defect low using added value.And by ardealite, iron red mud
It is comprehensively utilized with high-sulfur bauxite, extraction recycling valuables Quality Research has not been reported.
Goal of the invention
The object of the present invention is to provide a kind of integrated treatment ardealite, the techniques of iron red mud and high-sulfur bauxite.This
The new opplication of ardealite, iron red mud and high-sulfur bauxite has been opened up in invention, has 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 ardealite, iron red mud and high-sulfur bauxite, includes the following steps：
1) ardealite, iron red mud, high-sulfur bauxite, additive and modifying agent are mixed and is ground and raw material are made, controlled
The weight ratio of ardealite, iron red mud and high-sulfur bauxite is 1 in raw material:0.2-0.6:0.4-0.9, additive adding proportion are 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
12-22%；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 ardealite above-mentioned, iron red mud and high-sulfur bauxite, in step 1), the high ferro is red
Mud is Bayer process iron red mud, wherein Fe2O3Content be higher than 20%, sulfur content is higher than 0.7% in the high-sulfur bauxite；Institute
It is sodium carbonate, sodium sulphate or caustic soda to state additive；The modifying agent is anthracite, carbon or gangue.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, in step 1), the kiln is industry
Rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, in step 1), the raw material be
Roasting time 1-3 hours at 1050-1250 DEG C of temperature.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, it is described to be ground to water in step 2)
Mill, when dissolution with it is water-soluble go out.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, in step 2), when the dissolution
It is 4-6 that liquid, which consolidates volume ratio,:1.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite is separated by solid-liquid separation in step 2) and obtains
Precipitation carry out flotation, isolate iron sulfide, the flue gas after iron sulfide is roasted be used for relieving haperacidity, residue is iron oxide.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, the iron sulfide are placed in 30-
It under 40% oxygen-enriched environment, is roasted 1-3 hours at 800-1000 DEG C, the flue gas for roasting generation is catalyzed reaction through vanadic anhydride
It is absorbed afterwards with the concentrated sulfuric acid and sulfuric acid is made.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, to isolated in step 2)
CO is added in liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains aluminium hydroxide, by institute
The Aluminium hydroxide roasting obtained, obtains aluminium oxide.
The technique of integrated treatment ardealite above-mentioned, iron red mud and high-sulfur bauxite, the roasting is in temperature 800-
Roasting time 1-3 hours at 1000 DEG C.
The present invention is by by ardealite and iron red mud reaction, recombination, making utility.The net reaction of principle
For：
CaSO4(ardealite)+Na2O·SiO2·Al2O3(iron red mud+high-sulfur bauxite) → Na2O·Al2O3+CaO·
SiO2↓+[sulphur]
From the reaction equation it is found that with the CaO and SiO in iron red mud and high-sulfur bauxite in ardealite2Generate former silicon
Sour calcium (CaOSiO2↓) after, obtain soluble fabulous sodium aluminate (Na2O·Al2O3).[sulphur] in reaction equation, refers to passing through
Raw material add modifying agent technique, the metal sulfide of generation, main component FeS；After leaching the sodium aluminate in clinker, it will obtain
Sediment flotation can be obtained FeS.
Advantageous effect
1, the present invention is by using ardealite, iron red mud and high-sulfur bauxite as primary raw material, by being subject to additive
Dissolution is ground after being roasted with modifying agent, you can obtain the mainly solution containing sodium aluminate, for recycling aluminium, and precipitating residue is through flotation
After can be used to production sulfuric acid and recycle iron, to which main valuable material sulphur, silicon and aluminium have been carried out effective recycling extraction, open
The new direction that ardealite, iron red mud and high-sulfur bauxite comprehensively utilize is warded off.
2, the present invention only needs that modifying agent and additive roasting are added after mixing ardealite, iron red mud and high-sulfur bauxite
It burns, then dissolution is separated by solid-liquid separation, and solid portion and liquid portion can be by valuables by conventional extraction process
Matter ingredient carries out separation and Extraction, simple for process, and key reaction material is all waste residue, greatly reduces the cost of integrated application,
And improve the added value of ardealite, iron red mud 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 iron red mud
| Composition | Fe2O3 | Al2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 25.1% | 17.8% | 14.2% | 10.8% | 4.2% | 5.0% | 0.6% | 11.3% |
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 63.2% | 5.6% | 4.1% | 16.9% | 10.2% |
The technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, steps are as follows：
1) ardealite, iron red mud, high-sulfur bauxite, sodium carbonate and anthracite are mixed and is ground and raw material are made, controlled
The weight ratio of ardealite, iron red mud and high-sulfur bauxite is 1 in raw material:0.4:0.7, additive adding proportion presses institute in raw material
Containing Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 17% of raw material total weight；It will
Raw material are sent into industrial rotary kiln roasting time 1 hour at 1250 DEG C of temperature, and 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 2：
The Principle components analysis table of the present embodiment iron red mud
| Composition | Fe2O3 | Al2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 24.8% | 17.5% | 13.8% | 11.8% | 4.1% | 5.2% | 0.6% | 11.2% |
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 60.1% | 8.5% | 1.8% | 18.2% | 11.4% |
The technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, steps are as follows：
1) ardealite, iron red mud, high-sulfur bauxite, sodium sulphate and carbon are mixed and is ground and raw material are made, control raw material
The weight ratio of middle ardealite, iron red mud and high-sulfur bauxite is 1:0.2:0.4, additive adding proportion is pressed contained in raw material
Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 12% of raw material total weight；It will give birth to
Material is sent into Industry Tunnel Kiln roasting time 2 hours at 1120 DEG C of temperature, and 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 3：
The Principle components analysis table of the present embodiment iron red mud
| Composition | Fe2O3 | Al2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | Igloss |
| Content | 25.4% | 15.6% | 13.8% | 14.1% | 4.1% | 6.1% | 0.6% | 11.1% |
The Principle components analysis table of the present embodiment high-sulfur bauxite
| Composition | Al2O3 | Fe2O3 | S | SiO2 | Other |
| Content | 64.6% | 5.6% | 0.7% | 17.7% | 11.4% |
The technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, steps are as follows：
1) ardealite, iron red mud, high-sulfur bauxite, caustic soda and gangue are mixed and is ground and raw material are made, control life
The weight ratio of ardealite, iron red mud and high-sulfur bauxite is 1 in material:0.6:0.9, additive adding proportion is pressed contained in raw material
Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 22% of raw material total weight；It will give birth to
Material is sent into industrial shaft kiln roasting time 3 hours at 1050 DEG C of temperature, and 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 ardealite, iron red mud and high-sulfur bauxite, embodiment 1/2/3 is consolidated
The isolated precipitation of liquid carries out flotation, isolates iron sulfide, iron sulfide is placed under 30% oxygen-enriched environment, at 800 DEG C
Roasting 3 hours, the flue gas for roasting generation absorb obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is oxidation
Iron.
In the present embodiment, the rate of recovery of iron oxide is 97.7%.
Embodiment 5：The technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, embodiment 1/2/3 is consolidated
The isolated precipitation of liquid carries out flotation, isolates iron sulfide, iron sulfide is placed under 35% oxygen-enriched environment, at 900 DEG C
Roasting 2 hours, the flue gas for roasting generation absorb obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is oxidation
Iron.
In the present embodiment, the rate of recovery of iron oxide is 98.0%.
Embodiment 6：The technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, embodiment 1/2/3 is consolidated
The isolated precipitation of liquid carries out flotation, isolates iron sulfide, iron sulfide is placed under 40% oxygen-enriched environment, at 1000 DEG C
Roasting 1 hour, the flue gas for roasting generation absorb obtained sulfuric acid after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, and residue is oxidation
Iron.
In the present embodiment, the rate of recovery of iron oxide is 97.3%.
Embodiment 7：A kind of technique of integrated treatment ardealite, iron red mud and high-sulfur bauxite, it is solid to embodiment 1/2/3
CO is added in the isolated liquid of liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydrogen
Aluminium oxide, 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 99.2%.
Embodiment 8：A kind of technique of integrated treatment ardealite, iron red mud and high-sulfur bauxite, it is solid to embodiment 1/2/3
CO is added in the isolated liquid of liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydrogen
Aluminium oxide, by the aluminium hydroxide of gained at 900 DEG C of temperature roasting time 2 hours, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 94.1% in the present embodiment, purity 99.1%.
Embodiment 9：A kind of technique of integrated treatment ardealite, iron red mud and high-sulfur bauxite, it is solid to embodiment 1/2/3
CO is added in the isolated liquid of liquid2It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains hydrogen
Aluminium oxide, by the aluminium hydroxide of gained at 1000 DEG C of temperature roasting time 1 hour, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 93.8% in the present embodiment, purity 99.6%.
Claims (10)
1. the technique of a kind of integrated treatment ardealite, iron red mud and high-sulfur bauxite, which is characterized in that include the following steps：
1）Ardealite, iron red mud, high-sulfur bauxite, additive and modifying agent are mixed and ground, raw material are made, controls raw material
The weight ratio of middle ardealite, iron red mud and high-sulfur bauxite is 1:0.2-0.6:0.4-0.9, additive adding proportion press raw material
In contained Na2O and A12O3+Fe2O3The molecular proportion of summation is 1:1 addition, the mixed proportion of modifying agent are the 12- of raw material total weight
22%；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 ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 1）In, the iron red mud is Bayer process iron red mud, wherein Fe2O3Content be higher than 20%, the high-sulfur alumina
Sulfur content is higher than 0.7% in mine；The additive is sodium carbonate, sodium sulphate or caustic soda；The modifying agent is anthracite, carbon or coal
Spoil.
3. the technique of integrated treatment ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 1）In, the kiln is industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln.
4. the technique of integrated treatment ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 1）In, the raw material are roasting time 1-3 hours at 1050-1250 DEG C of temperature.
5. the technique of integrated treatment ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 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 ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 2）In, it is 4-6 that the liquid when dissolution, which consolidates volume ratio,:1.
7. the technique of integrated treatment ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：Step 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 for making
Acid, residue are iron oxide.
8. the technique of integrated treatment ardealite according to claim 7, iron red mud and high-sulfur bauxite, feature exist
In：The iron sulfide is placed under the oxygen-enriched environment of 30-40%, is roasted 1-3 hours at 800-1000 DEG C, is roasted the cigarette of generation
Gas, which is absorbed after vanadic anhydride catalysis reaction with the concentrated sulfuric acid, is made sulfuric acid.
9. the technique of integrated treatment ardealite according to claim 1, iron red mud and high-sulfur bauxite, feature exist
In：To step 2）In CO is added in isolated liquid2It is no longer generated to white precipitate, it is clear after then filtering out white precipitate
Drying is washed, aluminium hydroxide is obtained, by the Aluminium hydroxide roasting of gained, obtains aluminium oxide.
10. the technique of integrated treatment ardealite according to claim 9, iron red mud and high-sulfur bauxite, feature exist
In：The roasting is roasting time 1-3 hours at 800-1000 DEG C of temperature.
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| CN108483408A (en) * | 2018-07-03 | 2018-09-04 | 贵州大学 | A kind of comprehensive utilization process of ardealite, red mud and low-grade bauxite |
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