CN107213774A - A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings - Google Patents
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings Download PDFInfo
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- CN107213774A CN107213774A CN201710339318.6A CN201710339318A CN107213774A CN 107213774 A CN107213774 A CN 107213774A CN 201710339318 A CN201710339318 A CN 201710339318A CN 107213774 A CN107213774 A CN 107213774A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas desulfurization
- smelting
- mine tailings
- desulfurization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003546 flue gas Substances 0.000 title claims abstract description 97
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 86
- 230000023556 desulfurization Effects 0.000 title claims abstract description 80
- 238000003723 Smelting Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000007789 gas Substances 0.000 claims abstract description 61
- 239000002002 slurry Substances 0.000 claims abstract description 49
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 41
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 230000001590 oxidative effect Effects 0.000 claims abstract description 34
- 239000008394 flocculating agent Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 37
- 239000003292 glue Substances 0.000 claims description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 22
- 239000003517 fume Substances 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000000706 filtrate Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 238000001694 spray drying Methods 0.000 claims description 7
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 22
- 239000002893 slag Substances 0.000 abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 abstract description 10
- 238000004064 recycling Methods 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052725 zinc Inorganic materials 0.000 abstract description 6
- 239000011701 zinc Substances 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000002440 industrial waste Substances 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- -1 iron content Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical class O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 51
- 239000000243 solution Substances 0.000 description 33
- 230000003009 desulfurizing effect Effects 0.000 description 17
- 235000010269 sulphur dioxide Nutrition 0.000 description 16
- 239000008246 gaseous mixture Substances 0.000 description 15
- 239000000126 substance Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 12
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 229960002163 hydrogen peroxide Drugs 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 6
- 238000013019 agitation Methods 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000004035 construction material Substances 0.000 description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 235000009508 confectionery Nutrition 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 229910052840 fayalite Inorganic materials 0.000 description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 3
- 239000007791 liquid phase Substances 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
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011790 ferrous sulphate Substances 0.000 description 2
- 235000003891 ferrous sulphate Nutrition 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229910002971 CaTiO3 Inorganic materials 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000404 calcium aluminium silicate Substances 0.000 description 1
- 235000012215 calcium aluminium silicate Nutrition 0.000 description 1
- WNCYAPRTYDMSFP-UHFFFAOYSA-N calcium aluminosilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O WNCYAPRTYDMSFP-UHFFFAOYSA-N 0.000 description 1
- 229940078583 calcium aluminosilicate Drugs 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical group [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical group O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of based on the flue gas desulfurization for smelting mine tailings and resource utilization method, belong to waste residue field of comprehensive utilization and industrial waste gas purifying technical field.The smelting mine tailings and water of the metals such as iron content, zinc, manganese, aluminium are hybridly prepared into desulfurization slurry, desulfurization slurry absorbs the SO in flue gas with flue gas adverse current haptoreaction2And be catalytically oxidized to the elements such as iron, zinc, manganese, aluminium in sulfuric acid, sulfuric acid leaching slag, then add oxidizing solution aoxidized, hydrolyzed, polymerisation, recycling produce obtain Polyferric Sulfate based flocculating agent.The flocculant can be used for processing enterprise wastewater.The present invention is simple to operate, and expense is low, not only with preferable flue gas desulfurization effect, while resourcebility produces Polyferric Sulfate based flocculating agent, lifts slag material high level recycling level.
Description
Technical field
The present invention relates to a kind of based on the flue gas desulfurization for smelting mine tailings and resource utilization method, belong to waste residue and integrate profit
With field and industrial waste gas purifying technical field.
Technical background
Mineral Resources in China is enriched, and by 2014, China found out that copper ore resource reserves are 9689.6 ten thousand t, these copper mines
Widely distributed in China, Relatively centralized is in provinces such as Tibet, Yunnan, Jiangxi.In the last few years, China's exploitation of mineral resources usage amount was big,
Annual produce contains Cu-S ore up to 9,580,000 ~ 14,370,000 t, the t of red mud slag 30,000,000.These slag complicated components, wherein containing Cu-S ore
Often containing noble metals such as valuable metal and a small amount of Ag, Au such as Fe, Zn, Ca, Mg, Mn, Al, wherein Fe contents are long-range near 40%
In the average production-grade of iron ore 29.1%, mainly with fayalite（Fe2SiO4）, hortonolite（MgFeSiO4）, magnet
Ore deposit（Fe3O4）Vitreum form Deng composition is present, and Al mainly exists in aluminosilicate form, and Cu is mainly with matte（CuFeS2）
Form is present；Red mud slag is mainly containing Al, Fe, Ca, Si etc., and Al is main with calcium aluminosilicate hydrate wherein in red mud slag（3CaO·
Al2O3·SiO2·4H2O）, ca aluminosilicate（CaO·Al2O3·2SiO2）Form is present, Ca more than in addition to two forms, mainly with
Calcite（CaCO3）, perovskite（CaTiO3）Form is present, while with a small amount of impurity, such as Fe2O3、SiO2.These slags fail
Effective recycling, dealing with improperly to environment has potential hazard and causes the huge wasting of resources.Meanwhile, produced in smelting process big
Sulfur-bearing flue gas during smelting is measured, it is usually used in industrializing relieving haperacidity, but still containing a large amount of low-concentration sulfur dioxides after relieving haperacidity tail gas process,
Traditional handicraft is mainly absorbed using the alkaline solution containing the metal oxide such as Na, Ca, Al, carbonate or hydroxide, but cost compared with
Height, recycling is difficult, and heavy environmental burden is brought to enterprise.
In the last few years, with the poor slag such as manganese ore, red mud ore deposit, magnesite, the zinc powder dirt wet process of FGD with slurry for representative
And recycling production byproduct technique is widely applied, the industry such as the method is electrolytic manganese, Lead And Zinc Smelter provides new approaches,
Flue gas desulfurization and the coupling of resource reclaim can be achieved, operating cost is reduced, but be due to that the reasons such as lean ore distribution are limited by industry
System.Meanwhile, with Fe ()、Fe() etc. transition metal ions additive as catalyst, desulfurizing agent be used for flue gas desulfurization by
Extensive concern, but the technique needs to consume a large amount of additives, and operating cost is higher, Difficulty.Chinese patent（Application number
201210580849.1）Desulfurizing agent, absorbing sulfur dioxide in flue, while in oxygen or smelly are used as by the use of acid trivalent ferrous solution
Under oxygen oxidizing condition, the circulation of iron can be realized using liquid phase catalytic oxidation principle, when sulfate concentration reaches higher concentration most
Separation, purifying, crystallization obtain ferric sulfate or iron chloride eventually.Chinese patent（Application number 201610019014.1）Disclose one kind
Formula of red mud slurry for flue gas desulfurization and preparation method thereof.It is 4% ~ 10% that it, which is formulated red mud slurry concentration, available for red
Mud periphery firepower steam power plant.Chinese patent（Application number 201510959956.9）Disclose magnet after a kind of cooling using roasting
Ore deposit, which adds into nanometer titanium dioxide titanium solution to stand and be calcined again, prepares Fenton catalyst methods, and the catalyst can be urged effectively
Changing hydrogen peroxide is used for flue gas desulfurization and denitrification.But Fenton catalyst needed for the invention need to be calcined in hot conditions, step is complicated,
And need to consume hydrogen peroxide, therefore desulphurization cost is higher.
On the other hand, a large amount of acid-bearing wastewaters are produced in smelting process, its complicated component contains suspension, a variety of high concentrations
Heavy metal etc.；Meanwhile, there are other discharge of wastewater sources in smelting industry periphery.Conventional method is mainly neutralized using lime, sulfuric acid is sub-
The reagent such as iron coagulating sedimentation wherein heavy metal, but the process can cause medicament largely to consume, goes out that the water hardness, salinity are excessive etc. to ask
Topic.Therefore, how economical and efficient handles that these waste water are urgently to be resolved hurrily, the multi-component compound macromolecule by representative of bodied ferric sulfate
Flocculant there is remarkable result to continue to develop severe industrial pollution waste water due to it, be paid high attention to.Chinese patent（Application
Numbers 201410713473.6）Disclose a kind of preparation method for being used to handle the improved PFS of industrial wastewater and its answer
With.The improved PFS mainly prepares polyaluminum sulfate using green vitriol and sulfuric acid solution under sodium chlorate oxidation
Iron, and the bodied ferric sulfate to obtained by is modified as kaolin and talcum, so that it is useless to regenerated papermaking to lift polyferric flocculant
COD, SS, the clearance of colourity in water, while can also reduce flocculant usage amount, reduce chemical sludge yield, so as to reach
Cost-effective, simplified technique purpose.Chinese patent（Application number 201310653910.5）Flue gas desulfurization is used as by the use of ferrous sulfate
Agent, with KClO3/NaClO3As oxidant, the simultaneously synthesizing liquid polymeric sulfuric acid of flue gas desulfurization is realized in spouting induction flotation
Iron, but the invention desulfurization needs to consume a large amount of ferrous sulfate.Chinese patent（Application number 201610045097.7）Propose with sulfuric acid
The components such as the molysite such as ferrous iron component, polyaluminium sulfate are raw material, and the combination production one using magnesium chloride, zinc chloride etc. as flocculation aid
Plant efficient water treatment composite flocculant.The invention effectively plays aluminium salt and the synergy of molysite, with excellent flocculating effect,
But reagent cost is higher.
At present, not yet there is the side that Polyferric Sulfate based flocculating agent is produced based on the flue gas desulfurization and recycling for smelting mine tailings
Method.
The content of the invention
To solve problems of the prior art, the present invention provides a kind of based on the flue gas desulfurization for smelting mine tailings and money
Sourceization utilizes the valuable metals such as the iron, manganese, zinc, the aluminium that contain in the method for producing Polyferric Sulfate based flocculating agent, mine tailings to have and preferably urged
Change oxidability, sulfuric acid can be generated by catalysis oxidation low-concentration sulfur dioxide in flue gas in the liquid phase, while sulfuric acid can further soak
Ore removal metal in the dreg element, as reaction is carried out, the metal concentration such as iron, manganese, aluminium is continuously increased in absorbing liquid, is aoxidized by adding
Agent, Polyferric Sulfate based flocculating agent can be generated in desulfurizing tower, recycling byproduct is obtained, so as to reduce flue gas desulfurization operating cost, increased
Plus economic benefit.
The present invention is realized by following technical proposal：A kind of flue gas desulfurization and recycling side based on smelting mine tailings
Method is comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A；
（2）Water is added in copper tailing and/or waste red mud residues powder and is configured to flue gas desulfurization glue size A；
（3）In reaction vessel, under stirring condition, by step（1）Gained pretreated fumes A and step（2）Gained flue gas desulfurization
Slurries A formation counter current contacting react to desulfurization slurry pH value be 1 ~ 4 when at the uniform velocity add oxidizing solution continue reaction obtain instead
Answer the SO in slurries B and processed gas B, processed gas B2Concentration be not higher than 200mg/m3When empty；
（4）By step（3）Gained reacting slurry B is filtrated to get filtrate and filter residue, and filtrate is concentrated into iron speciation and is not less than
11% obtains liquid Polyferric Sulfate based flocculating agent, filter residue dewater treatment；
Further, temperature is additionally included under the conditions of 60 ~ 80 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent to be obtained into solid and gathered
Iron-based flocculating agent.
The step（2）The middle particle diameter for smelting mine tailings powder is 200 ~ 300 mesh, smelts the solid-liquid of mine tailings powder and water
Mass ratio is 1:(3~10).
The mass percent concentration of the oxidizing solution is 25 ~ 40%, and the addition of oxidizing solution is starched for flue gas desulfurization
The 0.2 ~ 10% of liquid product, oxidizing solution is hydrogen peroxide, sodium chlorate, one kind of sodium hypochlorite or any than a variety of.
The step（4）The temperature of middle filtrate concentration is 50 ~ 70 DEG C.
The temperature for pre-processing mixed gas A is less than 45 DEG C, and the volumetric concentration of oxygen is 8.0% ~ 19.5%；
In reaction vessel, gas residence time is 4 ~ 20s；
The flue gas during smelting can be the mixed gas of smelting exhaust and ugitive gas collection flue gas；
The smelting exhaust contains SO for what is discharged in nonferrous metallurgical process2The tail gas of gas；
The ugitive gas collection flue gas refers to that all enclosures in smeltery in meltshop are connected and then group with pipeline
Into large-scale collection cigarette systematic collection flue gas；
Main chemical reactions involved in the present invention are as follows：
（1）Ore pulp flue gas desulfurization principle
Red mud slurry flue gas desulfurization：Na2O+SO2=Na2SO3
4SO2+4Na2O=3Na2SO4+Na2S
4.5SO2+Al2O3=Al2(SO4)3+1.5S
4CaO+4SO2=3CaSO4+CaS
2Fe2++SO2+O2=2Fe3++SO4 2-
2Fe3++SO2+2H2O=2Fe3++SO4 2- +4H+
Copper mine starches flue gas desulfurization：
SO2+H2OH2SO3 H++HSO3 -
2Fe2++SO2+O2=2Fe3++SO4 2-
2Fe3++SO2+2H2O=2Fe3++SO4 2- +4H+
Fe2SiO4+2SO2+O2= 2FeSO4+ SiO2↓
FeSO4+SO2+O2=Fe2(SO4)3
Fe2(SO4)3+SO2+2H2O=2FeSO4+2H2SO4
Reaction equation can be totally summarized in
2SO2+2H2O+O2 H2SO4
（2）Polyferric Sulfate based flocculating agent production principle
Oxidation：2FeSO4+H2O2+H2SO4=Fe2(SO4)3+2H2O
Hydrolysis：Fe2(SO4)3+nH2O=Fe2(OH)n(SO4)3-n/2+n/2H2SO4
Polymerisation：mFe2(OH)n(SO4)3-n/2=[Fe2(OH)n(SO4)3-n/2]m
The beneficial effects of the invention are as follows：
（1）The present invention, which will smelt mine tailings, is used for flue gas during smelting desulfurization, and its sulfur dioxide removal efficiency is more than 90%, realizes and is controlled with useless
It is useless；
（2）The present invention utilizes the catalysis oxidation ability of the valuable metal such as iron, manganese, zinc, copper in mine tailings, in the liquid phase catalysis oxidation
Low-concentration sulfur dioxide in flue gas generates sulfuric acid, metallic element in sulfuric acid leaching slag, as reaction is carried out, iron in absorbing liquid,
The metal concentrations such as manganese, aluminium are continuously increased, by adding oxidant, and it is the flocculation of Polyferric Sulfate system that recycling byproduct is generated in desulfurizing tower
Agent, so as to reduce flue gas desulfurization operating cost, increases economic benefit；
（3）The water that filter residue dewater treatment of the present invention is obtained can be re-used as industrial water, and the flue gas desulfurization sewage disposal of reduction enterprise is born
Lotus；
（4）Polyferric Sulfate based flocculating agent, is applicable to waste water treatment made from recycling of the present invention.
Embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1：The present embodiment is with 10000 mg/m3Sulfur dioxide steel cylinder gas, purity is 99.5% nitrogen cylinder gas, empty
Air pump pumping is accurately hybridly prepared into the gas flow rate that gaseous mixture A simulates flue gas during smelting, wherein gaseous mixture A by mass flowmenter
For 1.2L/min, contain the oxygen that mass fraction is 19.5%, SO2Concentration be 1500mg/m3；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）Water is added in copper tailing waste residue powder and is configured to flue gas desulfurization glue size A, wherein the particle diameter for smelting mine tailing ground-slag is
200 mesh, the solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:4；
（2）By step（1）Gained flue gas desulfurization glue size A is delivered to the spray on ore pulp desulfurization bubbling reactor top by slurries pump
In device；
（3）Gaseous mixture A is passed through to the bottom of ore pulp desulfurization bubbling reactor, under agitation, makes gaseous mixture A and step（2）
Gained flue gas desulfurization glue size formed in ore pulp desulfurization bubbling reactor counter current contacting react to desulfurization slurry pH value be 1 when it is even
Speed addition oxidizing solution continuation reaction obtains the SO in reacting slurry B and processed gas B, processed gas B2Concentration be less than
150mg/m3When directly empty, wherein oxidizing solution is the hydrogenperoxide steam generator that mass fraction is 30%, oxidizing solution（Cross
Hydrogen peroxide solution）Addition be flue gas desulfurization glue size volume 4%；
（4）SO in processed gas B2Concentration be 150mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filter
Liquid and filter residue, are that filtrate is concentrated into iron speciation for 12.8% by rotary evaporator and obtains liquid under the conditions of 60 DEG C in temperature
Body Polyferric Sulfate based flocculating agent, filter residue dewater treatment；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate based flocculating agent is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 150mg/m3, gaseous mixture A desulfuration efficiency is 90%, liquid Polyferric Sulfate
Full weight of iron fraction is 12.8%, reducing substances in base flocculant（With Fe2+Meter）Mass fraction is that 0.12%, basicity is
14.2%, meet national standard GB 14591-2006 requirements.
Embodiment 2：The flue gas during smelting of the present embodiment is the flue gas that Copper making acid manufacturing processes are produced and ugitive gas collection flue gas
Mixed gas, the exhaust gas volumn of mixed gas is 100000 Nm3SO in/h, flue gas2The mg/Nm of concentration 12003, O2Volumetric concentration
19.5%；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A, wherein pretreated fumes A temperature is 25 DEG C,
O2Volumetric concentration is 19.5%；
（2）Water is added in copper tailing waste residue powder and is configured to flue gas desulfurization glue size A, wherein the particle diameter for smelting mine tailing ground-slag is
200 mesh, the solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:5；Flue gas desulfurization glue size A is delivered to desulfurizing tower by slurries pump
In the spray equipment on top；
（3）By step（1）Gained pretreated fumes A is forced into 0.20 ~ 0.25 Kpa through air blower, then is passed through the bottom of desulfurizing tower
End, under agitation, makes gaseous mixture A and step（2）Gained flue gas desulfurization glue size forms counter current contacting reaction in desulfurizing tower
To desulfurization slurry pH value be 1 when at the uniform velocity add oxidizing solution continue reaction obtain reacting slurry B and processed gas B, desulfurization
SO in gas B2Concentration be less than 100mg/m3When directly empty, wherein oxidizing solution is the peroxidating that mass fraction is 35%
Hydrogen solution, oxidizing solution（Hydrogenperoxide steam generator）Addition be flue gas desulfurization glue size volume 1.5%, make the portion in slurries
Divide Fe2+It is oxidized to Fe3+, promote oxidizing sulfur dioxide；
（4）SO in processed gas B2Concentration be 100mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filter
Liquid and filter residue（Filter residue is copper tailing residue）, under the conditions of temperature is 70 DEG C, filtrate is concentrated into the matter of iron by rotary evaporator
Amount concentration obtains liquid Polyferric Sulfate based flocculating agent for 11.20%, and filter residue dewater treatment stacks recovery and is used as construction material or further
Silicon in residue is reclaimed by thermokalite dissolving；
（5）Under the conditions of temperature is 70 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate base flocculant is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 100mg/m3, gaseous mixture A desulfuration efficiency is 91.6%, and liquid gathers
Full weight of iron fraction is 11.20%, reducing substances in iron-based flocculant（With Fe2+Meter）Mass fraction is that 0.042%, basicity is
12.45%, meet national standard GB 14591-2006 requirements.
Embodiment 3：The flue gas during smelting of the present embodiment is the flue gas that Copper making acid manufacturing processes are produced and ugitive gas collection flue gas
Mixed gas, the exhaust gas volumn of mixed gas is 200000Nm3SO in/h, flue gas2The mg/Nm of concentration 14003, O2Volumetric concentration
19.0%；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A, wherein pretreated fumes A temperature is 30 DEG C,
O2Volumetric concentration is 19.0%；
（2）Water is added in copper tailing waste residue powder and is configured to flue gas desulfurization glue size A, wherein the particle diameter for smelting mine tailing ground-slag is
200 mesh, the solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:5；Flue gas desulfurization glue size A is delivered to desulfurizing tower by slurries pump
In the spray equipment on top；
（3）By step（1）Gained pretreated fumes A is forced into 0.20 ~ 0.30Kpa through air blower, then is passed through the bottom of desulfurizing tower,
Under agitation, gaseous mixture A and step are made（2）Gained flue gas desulfurization glue size forms counter current contacting in desulfurizing tower and reacted to de-
The pH value of sulphur slurries at the uniform velocity adds oxidizing solution continuation reaction and obtains reacting slurry B and processed gas B, sweet gas when being 1.5
SO in body B2Concentration be less than 100mg/m3When directly empty, wherein oxidizing solution is the hydrogen peroxide that mass fraction is 40%
Solution, oxidizing solution（Hydrogenperoxide steam generator）Addition be flue gas desulfurization glue size volume 2.5%, make the part in slurries
Fe2+It is oxidized to Fe3+, promote oxidizing sulfur dioxide；
（4）SO in processed gas B2Concentration be 100mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filter
Liquid and filter residue（Filter residue is copper tailing residue）, under the conditions of temperature is 70 DEG C, filtrate is concentrated into the matter of iron by rotary evaporator
Amount concentration obtains liquid Polyferric Sulfate based flocculating agent for 11.02%, and filter residue dewater treatment stacks recovery and is used as construction material or further
Silicon in residue is reclaimed by thermokalite dissolving；
（5）Under the conditions of temperature is 70 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate base flocculant is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 100mg/m3, gaseous mixture A desulfuration efficiency is 91.6%, and liquid gathers
Full weight of iron fraction is 11.02%, reducing substances in iron-based flocculant（With Fe2+Meter）Mass fraction is that 0.01%, basicity is
14.56%, meet national standard GB 14591-2006 requirements.
Embodiment 4：The flue gas during smelting of the present embodiment is the mixing of oxidation aluminum smelting technology matched with hot power plant and ugitive gas collection flue gas
Gas, the exhaust gas volumn of mixed gas is 100000Nm3SO in/h, flue gas2Concentration 2000mg/Nm3, O2Volumetric concentration 8.0%；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A, wherein pretreated fumes A temperature is 44.8
DEG C, O2Volumetric concentration is 8.0%；
（2）Water is added in waste red mud residues powder and is configured to flue gas desulfurization glue size A, the wherein particle diameter of melting waste slag powder is 300 mesh,
The solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:3；Flue gas desulfurization glue size A is delivered to desulfurizing tower top by slurries pump
In spray equipment；
（3）By step（1）Gained pretreated fumes A is forced into 0.20 ~ 0.30Kpa through air blower, then is passed through the bottom of desulfurizing tower,
Under agitation, gaseous mixture A and step are made（2）Gained flue gas desulfurization glue size forms counter current contacting in desulfurizing tower and reacted to de-
The pH value of sulphur slurries at the uniform velocity adds oxidizing solution continuation reaction and obtains reacting slurry B and processed gas B, processed gas B when being 4
In SO2Concentration be less than 200mg/m3When directly empty, wherein oxidizing solution is the sodium chlorate solution that mass fraction is 40%,
Oxidizing solution（Sodium chlorate solution）Addition be flue gas desulfurization glue size volume 10%, make the part Fe in slurries2+It is oxidized
For Fe3+, promote oxidizing sulfur dioxide；
（4）SO in processed gas B2Concentration be 200mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filter
Liquid and filter residue（Filter residue is red mud slag）, under the conditions of temperature is 50 DEG C, the quality that filtrate is concentrated into iron by rotary evaporator is dense
Spend and obtain liquid Polyferric Sulfate based flocculating agent, filter residue dewater treatment for 11.01%；
（5）Under the conditions of temperature is 60 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate base flocculant is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 200mg/m3, gaseous mixture A desulfuration efficiency is 90%, liquid Polyferric Sulfate
Full weight of iron fraction is 11.01%, reducing substances in base flocculant（With Fe2+Meter）Mass fraction is that 0.01%, basicity is
14.2%, meet national standard GB 14591-2006 requirements.
Embodiment 5：The flue gas during smelting of the present embodiment is the mixing of oxidation aluminum smelting technology matched with hot power plant and ugitive gas collection flue gas
Gas, the exhaust gas volumn of mixed gas is 150000Nm3SO in/h, flue gas2Concentration 1800mg/Nm3, O2Volumetric concentration 16.0%；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A, wherein pretreated fumes A temperature is 35 DEG C,
O2Volumetric concentration is 16.0%；
（2）Water is added in the waste residue powder of red mud and is configured to flue gas desulfurization glue size A, wherein the particle diameter for smelting mine tailing ground-slag is
220 mesh, the solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:10；Flue gas desulfurization glue size A is delivered to desulfurization by slurries pump
In the spray equipment at tower top end；
（3）By step（1）Gained pretreated fumes A is forced into 0.20 ~ 0.30Kpa through air blower, then is passed through the bottom of desulfurizing tower,
Under agitation, gaseous mixture A and step are made（2）Gained flue gas desulfurization glue size forms counter current contacting in desulfurizing tower and reacted to de-
The pH value of sulphur slurries at the uniform velocity adds oxidizing solution continuation reaction and obtains reacting slurry B and processed gas B, sweet gas when being 2.5
SO in body B2Concentration be less than 120mg/m3When directly empty, wherein oxidizing solution is the hydrogen peroxide that mass fraction is 28%
The liquor natrii hypochloritis that solution and mass fraction are 30% is 2 according to the volume ratio of hydrogenperoxide steam generator and liquor natrii hypochloritis:1
Proportions mixed oxidization solution, the addition of mixed oxidization solution is flue gas desulfurization glue size volume
5.6%, make the part Fe in slurries2+It is oxidized to Fe3+, promote oxidizing sulfur dioxide；
（4）SO in processed gas B2Concentration be 120mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filter
Liquid and filter residue（Filter residue is red mud residue）, under the conditions of temperature is 60 DEG C, filtrate is concentrated into the quality of iron by rotary evaporator
Concentration is that 11.05 % obtain liquid Polyferric Sulfate based flocculating agent, and filter residue dewater treatment is stacked recovery and led to as construction material or further
Overheat alkali soluble solution and reclaim silicon in residue；
（5）Under the conditions of temperature is 80 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate base flocculant is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 120mg/m3, gaseous mixture A desulfuration efficiency is 93.3%, and liquid gathers
Full weight of iron fraction is 11.05%, reducing substances in iron-based flocculant（With Fe2+Meter）Mass fraction is that 0.04%, basicity is
15.8%, meet national standard GB 14591-2006 requirements.
Embodiment 6：The flue gas during smelting of the present embodiment is the mixed gas of Copper making relieving haperacidity flue gas and ugitive gas collection flue gas, is mixed
The exhaust gas volumn for closing gas is 120000Nm3SO in/h, flue gas2Concentration 1000mg/Nm3, O2Volumetric concentration 12.0%；
A kind of flue gas desulfurization and resource utilization method based on smelting mine tailings, are comprised the following steps that：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A, wherein pretreated fumes A temperature is 35 DEG C,
O2Volumetric concentration is 12.0%；
（2）Water is added in copper tailing and waste red mud residues powder and is configured to flue gas desulfurization glue size A, wherein smelting the grain of mine tailing ground-slag
Footpath is 260 mesh, and the solid-liquid mass ratio for smelting mine tailing ground-slag and water is 1:8；Flue gas desulfurization glue size A is delivered to by slurries pump de-
In the spray equipment at sulphur tower top end；
（3）By step（1）Gained pretreated fumes A is forced into 0.20 ~ 0.30Kpa through air blower, then is passed through the bottom of desulfurizing tower,
Under agitation, gaseous mixture A and step are made（2）Gained flue gas desulfurization glue size forms counter current contacting in desulfurizing tower and reacted to de-
The pH value of sulphur slurries at the uniform velocity adds oxidizing solution continuation reaction and obtains reacting slurry B and processed gas B, sweet gas when being 2.0
SO in body B2Concentration be less than 90mg/m3When directly empty, wherein oxidizing solution is the sodium hypochlorite that mass fraction is 35%,
Oxidizing solution（Liquor natrii hypochloritis）Addition be flue gas desulfurization glue size volume 3.8%, make the part Fe in slurries2+Quilt
It is oxidized to Fe3+, promote oxidizing sulfur dioxide；
（4）SO in processed gas B2Concentration be 90mg/m3When, by step（3）Gained reacting slurry B is filtrated to get filtrate
And filter residue（Filter residue is copper tailing residue）, under the conditions of temperature is 65 DEG C, filtrate is concentrated into the quality of iron by rotary evaporator
Concentration obtains liquid Polyferric Sulfate based flocculating agent for 11.02%, and filter residue dewater treatment is stacked recovery and led to as construction material or further
Overheat alkali soluble solution and reclaim silicon in residue；
（5）Under the conditions of temperature is 70 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent；
The present embodiment imports and exports sulfur dioxide concentration by the detection of HC-6 type sulphur phosphorus analyzer, passes through constant temperature blender with magnetic force control
Desulfurization slurry temperature and speed of agitator；Polyferric Sulfate base flocculant is determined by GB 14591-2006 bodied ferric sulfates detection method complete
The indexs such as iron, reducing substances, basicity；
SO in the present embodiment processed gas B2Concentration be 90mg/m3, gaseous mixture A desulfuration efficiency is 91%, liquid Polyferric Sulfate base
Full weight of iron fraction is 11.01 %, reducing substances in flocculant（With Fe2+Meter）Mass fraction is that 0.067%, basicity is
14.28%, meet national standard GB 14591-2006 requirements.
Claims (5)
1. it is a kind of based on the flue gas desulfurization for smelting mine tailings and resource utilization method, it is characterised in that to concretely comprise the following steps：
（1）The cooling pretreatment of flue gas during smelting removing dust is obtained into pretreated fumes A；
（2）Water is added in copper tailing and/or waste red mud residues powder and is configured to flue gas desulfurization glue size A；
（3）In reaction vessel, under stirring condition, by step（1）Gained pretreated fumes A and step（2）Gained flue gas desulfurization
Slurries A formation counter current contacting react to desulfurization slurry pH value be 1~4 when at the uniform velocity add oxidizing solution continue reaction obtain instead
Answer the SO in slurries B and processed gas B, processed gas B2Concentration be not higher than 200mg/m3When empty；
（4）By step（3）Gained reacting slurry B is filtrated to get filtrate and filter residue, and filtrate is concentrated into iron speciation and is not less than
11% obtains liquid Polyferric Sulfate based flocculating agent, filter residue dewater treatment.
2. according to claim 1 based on the flue gas desulfurization and resource utilization method for smelting mine tailings, it is characterised in that：Also
It is included in temperature under the conditions of 60~80 DEG C, the spray drying of liquid Polyferric Sulfate based flocculating agent is obtained into Solid Polyferric Sulfate based flocculating agent.
3. according to claim 1 or claim 2 based on the flue gas desulfurization for smelting mine tailings and resource utilization method, its feature exists
In：Step（2）The middle particle diameter for smelting mine tailings powder is 200~300 mesh, and the solid-liquid mass ratio for smelting mine tailings powder and water is
1:(3~10).
4. according to claim 1 or claim 2 based on the flue gas desulfurization for smelting mine tailings and resource utilization method, its feature exists
In：The mass percent concentration of oxidizing solution is 25~40%, and the addition of oxidizing solution is flue gas desulfurization glue size volume
0.2~10%, oxidizing solution is hydrogen peroxide, sodium chlorate, one kind of sodium hypochlorite or any than a variety of.
5. according to claim 1 or claim 2 based on the flue gas desulfurization for smelting mine tailings and resource utilization method, its feature exists
In：Step（4）The temperature of middle filtrate concentration is 50~70 DEG C.
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