CN108751137A - A kind of comprehensive utilization process of flyash and ardealite - Google Patents
A kind of comprehensive utilization process of flyash and ardealite Download PDFInfo
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- CN108751137A CN108751137A CN201810711353.0A CN201810711353A CN108751137A CN 108751137 A CN108751137 A CN 108751137A CN 201810711353 A CN201810711353 A CN 201810711353A CN 108751137 A CN108751137 A CN 108751137A
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- ardealite
- flyash
- comprehensive utilization
- raw material
- utilization process
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- 239000010881 fly ash Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 13
- 230000000996 additive Effects 0.000 claims abstract description 13
- 239000004411 aluminium Substances 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007792 addition Methods 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 29
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 17
- GNVXPFBEZCSHQZ-UHFFFAOYSA-N iron(2+);sulfide Chemical compound [S-2].[Fe+2] GNVXPFBEZCSHQZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000004090 dissolution Methods 0.000 claims description 12
- 238000005188 flotation Methods 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 9
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 9
- 229910001884 aluminium oxide Inorganic materials 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 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
- GNTDGMZSJNCJKK-UHFFFAOYSA-N Vanadium(V) oxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910000460 iron oxide Inorganic materials 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 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
- 239000001187 sodium carbonate Substances 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
- 239000002956 ash Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 235000017550 sodium carbonate Nutrition 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000000463 material Substances 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 16
- 239000007787 solid Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 8
- 229910001388 sodium aluminate Inorganic materials 0.000 description 8
- IYJYQHRNMMNLRH-UHFFFAOYSA-N Sodium aluminate Chemical compound [Na+].O=[Al-]=O IYJYQHRNMMNLRH-UHFFFAOYSA-N 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- JHXCINJSAAFBDH-UHFFFAOYSA-N [Ca].O[Si](O)(O)O Chemical compound [Ca].O[Si](O)(O)O JHXCINJSAAFBDH-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052904 quartz Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L Calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- NTGONJLAOZZDJO-UHFFFAOYSA-M disodium;hydroxide Chemical compound [OH-].[Na+].[Na+] NTGONJLAOZZDJO-UHFFFAOYSA-M 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N iron-sulfur Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- JHLNERQLKQQLRZ-UHFFFAOYSA-N Calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N Phosphite Chemical compound [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 229940047431 Recombinate Drugs 0.000 description 1
- CBXWGGFGZDVPNV-UHFFFAOYSA-N SO4-SO4 Chemical compound OS(O)(=O)=O.OS(O)(=O)=O CBXWGGFGZDVPNV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001399 aluminium compounds Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- -1 calcirm-fluoride Chemical compound 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 229910052918 calcium silicate 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
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000004575 stone Substances 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
-
- 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
-
- 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
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/0693—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process from waste-like raw materials, e.g. fly ash or Bayer calcination dust
-
- 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
-
- 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
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
-
- 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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses the comprehensive utilization process of a kind of flyash and ardealite, include the following steps：1）Ardealite, flyash, additive and modifying agent are mixed and ground, raw material are made, it is 1 to control the weight ratio of ardealite and flyash in raw material:0.5-1.5, 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 8-16% 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 and flyash, 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 comprehensive utilization process of a kind of flyash and ardealite, 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..
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.
Although containing a large amount of valuable material, such as sulphur, iron, aluminium, silicon in ardealite and flyash；But China is annual
About 20,000,000 tons of ardealite is discharged, nearly hundred million tons of discharge capacity is added up.And the flyash generated every year is about more than 100,000,000 tons.
Since ardealite and flyash yield are huge, meanwhile, now the application at present for ardealite and flyash is less, main
It is used to produce building building cement and directly paves the way, and the technique that receipts valuable material is fetched by ardealite or coal ash lifting is multiple
It is miscellaneous, it is of high cost.Result in that the now consumption of current ardealite and flyash is few, ardealite and flyash it is low using added value
Defect.And comprehensively utilize ardealite and flyash, extraction recycling valuables Quality Research has not been reported.
Goal of the invention
The object of the present invention is to provide the comprehensive utilization process of a kind of flyash and ardealite.The present invention has opened up phosphorus
The new opplication of gypsum and flyash has treatment process simple, at low cost, and added value is high, and the valuable material rate of recovery is high, recycling
The high feature of aluminium component purity.
Technical scheme of the present invention
A kind of comprehensive utilization process of flyash and ardealite, includes the following steps：
1) ardealite, flyash, additive and modifying agent are mixed and are ground and raw material are made, control raw material in ardealite and
The weight ratio of flyash is 1:0.5-1.5, additive adding proportion press contained Na in raw material2O and A12O3+Fe2O3The molecule of summation
Than being 1:1 addition, the mixed proportion of modifying agent are the 8-16% 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 comprehensive utilization process of flyash and ardealite above-mentioned, in step 1), the additive is sodium carbonate, sodium sulphate
Or caustic soda；The modifying agent is anthracite, carbon or gangue.
The comprehensive utilization process of flyash and ardealite above-mentioned, in step 1), the kiln is industrial rotary kiln, industrial tunnel
Road kiln or industrial shaft kiln.
The comprehensive utilization process of flyash and ardealite above-mentioned, in step 1), the raw material are in temperature 1000-1200
Roasting time 1-2.5 hours at DEG C.
The comprehensive utilization process of flyash and ardealite above-mentioned, described to be ground to water mill in step 2), water when dissolution
Dissolution.
The comprehensive utilization process of flyash and ardealite above-mentioned, in step 2), the liquid when dissolution consolidates volume ratio and is
4-6:1。
The comprehensive utilization process of flyash and ardealite above-mentioned, the middle obtained precipitation that is separated by solid-liquid separation of step 2) are floated
Choosing, isolates iron sulfide, and by the remaining residue of flotation for producing cement, the flue gas after iron sulfide is roasted is used for relieving haperacidity, residual
Slag is iron oxide.
The comprehensive utilization process of flyash and ardealite above-mentioned, the iron sulfide are placed in the oxygen-enriched environment of 35-50%
Under, it is roasted 1-3 hours at 800-1000 DEG C, the flue gas for roasting generation is absorbed after vanadic anhydride catalysis reaction with the concentrated sulfuric acid
Sulfuric acid is made.
The comprehensive utilization process of flyash and ardealite above-mentioned, CO is added into liquid isolated in step 2)2
It is no longer generated to white precipitate, white precipitate is then filtered out into rear cleaning, drying, obtains aluminium hydroxide, the aluminium hydroxide of gained is roasted
It burns, obtains aluminium oxide.
The comprehensive utilization process of flyash and ardealite above-mentioned, the roasting are when being roasted at 800-1000 DEG C of temperature
Between 1-3 hours.
The present invention is by by ardealite and flyash reaction, recombination, making utility.The net reaction of principle
For：
CaSO4(ardealite)+Na2O·SiO2·Al2O3(flyash) → Na2O·Al2O3+CaO·SiO2↓+[sulphur]
From the reaction equation it is found that with the SiO in the CaO and flyash in ardealite2Generate calcium orthosilicate (2CaOSiO2
↓) after, obtain soluble fabulous sodium aluminate (Na2O·Al2O3).[sulphur] in reaction equation refers to adding modifying agent work by raw material
Skill, the metal sulfide of generation, main component FeS；After leaching the sodium aluminate in clinker, i.e. by obtained sediment flotation
FeS can be obtained.
Advantageous effect
1, the present invention is using ardealite and flyash by being used as primary raw material, by being subject to additive and after modifying agent roasts
Grinding dissolution, you can obtain the mainly solution containing sodium aluminate, for recycling aluminium, and precipitating residue can be used to produce after flotation
Sulfuric acid and recycling iron, residual residue is for producing portland cement, to carry out effectively main valuable material sulphur, silicon and aluminium
Recycling extraction, open the new direction of ardealite and total utilization of PCA.
2, the present invention only need will ardealite, flyash mix after be added modifying agent and additive roasting, then dissolve out into
Row is separated by solid-liquid separation, and solid portion and liquid portion can be detached valuable material ingredient by conventional extraction process
Extraction, it is simple for process, and key reaction material is all waste residue, greatly reduces the cost of integrated application, and improve phosphorus stone
The added value of cream and flyash.
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 flyash
A kind of comprehensive utilization process of flyash and ardealite, steps are as follows：
1) ardealite, flyash, sodium carbonate and anthracite are mixed and are ground and raw material are made, control raw material in ardealite and
The weight ratio of flyash is 1:1, 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 the 12% of raw material total weight；Raw material are sent into industrial rotary kiln at 1100 DEG C of temperature
Clinker is made in roasting time 2 hours；
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 flyash
| Composition | Al2O3 | Fe2O3 | CaO | SiO2 | TiO2 | Na2O | MgO | C | P | S |
| Content | 20.2% | 14.4% | 13.8% | 26.9% | 1.7% | 0.6% | 0.7% | 0.1% | 0.4% | 3.3% |
A kind of comprehensive utilization process of flyash and ardealite, steps are as follows：
1) ardealite, flyash, sodium sulphate and carbon are mixed and is ground and raw material are made, control ardealite and fine coal in raw material
The weight ratio of ash is 1:0.5, 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 the 8% of raw material total weight；Raw material are sent into Industry Tunnel Kiln at 1000 DEG C of temperature and are roasted
2.5 hours time is burnt, 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 flyash
A kind of comprehensive utilization process of flyash and ardealite, steps are as follows：
1) ardealite, flyash, caustic soda and gangue are mixed and is ground and raw material are made, control ardealite and powder in raw material
The weight ratio of coal ash is 1:1.5, 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 the 16% of raw material total weight；Raw material are sent into industrial shaft kiln at 1200 DEG C of temperature and are roasted
1 hour time is burnt, 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：A kind of comprehensive utilization process of flyash and ardealite obtains the separation of solid and liquid of embodiment 1/2/3
Precipitation carries out flotation, isolates iron sulfide, iron sulfide is placed under 35% oxygen-enriched environment, roasted 3 hours at 800 DEG C, roasts
It burns the flue gas generated and sulfuric acid is made with concentrated sulfuric acid absorption after vanadic anhydride catalysis reaction, residue is iron oxide；FLOTATION SEPARATION
When obtained residue be mainly silicic acid calcium component, which can be prepared into portland cement.
It is 95.7% that iron recovery is aoxidized in the present embodiment.
Embodiment 5：A kind of comprehensive utilization process of flyash and ardealite obtains the separation of solid and liquid of embodiment 1/2/3
Precipitation carries out flotation, isolates iron sulfide, iron sulfide is placed under 43% oxygen-enriched environment, roasted 2 hours at 900 DEG C, roasts
It burns the flue gas generated and sulfuric acid is made with concentrated sulfuric acid absorption after vanadic anhydride catalysis reaction, residue is iron oxide；FLOTATION SEPARATION
When obtained residue be mainly silicic acid calcium component, which can be prepared into portland cement.
It is 96.2% that iron recovery is aoxidized in the present embodiment.
Embodiment 6：A kind of comprehensive utilization process of flyash and ardealite obtains the separation of solid and liquid of embodiment 1/2/3
Precipitation carries out flotation, isolates iron sulfide, iron sulfide is placed under 40% oxygen-enriched environment, roasted 1 hour at 1000 DEG C, roasts
It burns the flue gas generated and sulfuric acid is made with concentrated sulfuric acid absorption after vanadic anhydride catalysis reaction, residue is iron oxide；FLOTATION SEPARATION
When obtained residue be mainly silicic acid calcium component, which can be prepared into portland cement.
It is 95.9% that iron recovery is aoxidized in the present embodiment.
Embodiment 7：A kind of comprehensive utilization process of flyash and ardealite is obtained to the separation of solid and liquid of embodiment 1/2/3
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
Aluminium hydroxide at 800 DEG C of temperature roasting time 3 hours, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 94.8% in the present embodiment, purity 99.8%.
Embodiment 8：A kind of comprehensive utilization process of flyash and ardealite is obtained to the separation of solid and liquid of embodiment 1/2/3
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
Aluminium hydroxide at 900 DEG C of temperature roasting time 2 hours, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 95.6% in the present embodiment, purity 99.1%.
Embodiment 9：A kind of comprehensive utilization process of flyash and ardealite is obtained to the separation of solid and liquid of embodiment 1/2/3
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
Aluminium hydroxide at 1000 DEG C of temperature roasting time 1 hour, obtain aluminium oxide.
The rate of recovery of aluminium oxide is 95.0% in the present embodiment, purity 99.6%.
Claims (10)
1. the comprehensive utilization process of a kind of flyash and ardealite, which is characterized in that include the following steps：
1）Ardealite, flyash, additive and modifying agent are mixed and ground, raw material are made, controls ardealite and fine coal in raw material
The weight ratio of ash is 1:0.5-1.5, 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 8-16% 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.
2. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 1）In, institute
It is sodium carbonate, sodium sulphate or caustic soda to state additive；The modifying agent is anthracite, carbon or gangue.
3. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 1）In, institute
It is industrial rotary kiln, Industry Tunnel Kiln or industrial shaft kiln to state kiln.
4. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 1）In, institute
It is roasting time 1-2.5 hours at 1000-1200 DEG C of temperature to state raw material.
5. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 2）In, institute
State and be ground to water mill, when dissolution with it is water-soluble go out.
6. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 2）In, institute
It is 4-6 to state liquid when dissolution to consolidate volume ratio:1.
7. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：Step 2）Middle solid-liquid
Isolated precipitation carries out flotation, isolates iron sulfide, and by the remaining residue of flotation for producing cement, iron sulfide is roasted
Flue gas afterwards is used for relieving haperacidity, and residue is iron oxide.
8. the comprehensive utilization process of flyash according to claim 7 and ardealite, it is characterised in that：The iron sulfide is
It is placed under the oxygen-enriched environment of 35-50%, is roasted 1-3 hours at 800-1000 DEG C, the flue gas for roasting generation is urged through vanadic anhydride
Change to be absorbed with the concentrated sulfuric acid after reacting and sulfuric acid is made.
9. the comprehensive utilization process of flyash according to claim 1 and ardealite, it is characterised in that：To step 2）In 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
The Aluminium hydroxide roasting of gained is obtained aluminium oxide by aluminium.
10. the comprehensive utilization process of flyash according to claim 9 and ardealite, it is characterised in that：The roasting is
Roasting time 1-3 hours at 800-1000 DEG C of temperature.
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| 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 |
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| 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 |
| CN105776150A (en) * | 2014-12-23 | 2016-07-20 | 中国科学院过程工程研究所 | Method for cooperative activation of fly ash and decomposition of gypsum for recovery of sulfur resource |
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