CN203728902U - Integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device - Google Patents
Integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device Download PDFInfo
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- CN203728902U CN203728902U CN201420112478.9U CN201420112478U CN203728902U CN 203728902 U CN203728902 U CN 203728902U CN 201420112478 U CN201420112478 U CN 201420112478U CN 203728902 U CN203728902 U CN 203728902U
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- slag
- rotary kiln
- iron
- zinc
- flue gas
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- 239000002893 slag Substances 0.000 title claims abstract description 61
- 239000007789 gas Substances 0.000 title claims abstract description 47
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- 239000002910 solid waste Substances 0.000 title claims abstract description 21
- 229910000628 Ferrovanadium Inorganic materials 0.000 title claims abstract description 13
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000011701 zinc Substances 0.000 title abstract description 25
- 229910052725 zinc Inorganic materials 0.000 title abstract description 24
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003546 flue gas Substances 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 12
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000011068 loading method Methods 0.000 claims abstract description 6
- 239000006148 magnetic separator Substances 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 239000002956 ash Substances 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 20
- VYALWLKLWHWJNZ-UHFFFAOYSA-N [V].[Zn].[Fe] Chemical compound [V].[Zn].[Fe] VYALWLKLWHWJNZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000007701 flash-distillation Methods 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 4
- 239000010884 boiler slag Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 70
- 229910052742 iron Inorganic materials 0.000 abstract description 31
- 230000008901 benefit Effects 0.000 abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 2
- 229910000510 noble metal Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 49
- 230000008569 process Effects 0.000 description 28
- 229910052751 metal Inorganic materials 0.000 description 25
- 239000002184 metal Substances 0.000 description 25
- 238000005516 engineering process Methods 0.000 description 22
- 238000011161 development Methods 0.000 description 12
- 230000018109 developmental process Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 238000006722 reduction reaction Methods 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 9
- 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 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 7
- 229910052738 indium Inorganic materials 0.000 description 7
- 229910052935 jarosite Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000010970 precious metal Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 239000000284 extract Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000005272 metallurgy Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000003500 flue dust Substances 0.000 description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 4
- 230000001698 pyrogenic effect Effects 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical group CCCCCCCCO KBPLFHHGFOOTCA-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
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 150000004965 peroxy acids Chemical class 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 241001482108 Alosa pseudoharengus Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- HXELGNKCCDGMMN-UHFFFAOYSA-N [F].[Cl] Chemical compound [F].[Cl] HXELGNKCCDGMMN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010685 fatty oil Chemical group 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides an integrated solid waste gas ash and zinc-containing ferrovanadium slag recovery device, which mainly comprises a loading device, a rotary kiln, a flue gas treatment device and an iron slag treatment device, wherein the loading device comprises a vibrating rock feeder and a belt charger; the upstream of the belt charger is connected with a discharge opening of the vibrating rock feeder, and the downstream of the belt charger is connected with a feed opening of the rotary kiln; the rotary kiln is used for fuming volatilization treatment on a solid waste gas ash and zinc-containing ferrovanadium slag mixture; a fume outlet of the rotary kiln is connected with the flue gas treatment device; a slag bath is arranged at a slag outlet of the rotary kiln; iron slag is transferred to the iron slag treatment device through a transfer device; the flue gas treatment device comprises a settling chamber, a waste heat boiler, a surface air cooler, a bag type dust collector, a desulphurization tower and a chimney, which are sequentially connected; the iron slag treatment device comprises a crusher, a ball mill, a classifier, a magnetic separator, a secondary ball mill, a shaker, a drying kiln and a flash evaporator with a hot-blast stove, which are sequentially connected; a flue gas outlet of the flash evaporator is connected with the chimney through a dust collection system and an induced draft fan. According to the device, the characteristics of high carbon content and low iron content of gas ash and high iron content and high rare noble metal content of ferrovanadium slag can be used, the advantages of raw material components are combined, and reaction heat conditions are used for fulfilling the aims of integrated recovery and harmless treatment.
Description
Technical field
The invention belongs to metallurgical process secondary resource recycling field, relate to a kind of adopt clean pyrogenic process beneficiation technologies from low-grade containing comprehensively recovering valuable metal zinc solid waste slag, and the device that carries out harmless treatment, relate in particular to a kind of from gas mud (ash), containing the comprehensive device that extracts non-ferrous metal zinc-iron vanadium slag.
Technical background
China is the first in the world big steel country, and production capacity accounts for the more than 60% of the whole world.Steel industry all can produce a large amount of metallurgical dusts every year, and the solid waste thing overwhelming majority such as sintering dirt, gravitational dust, converter ash, iron scale, grain slag, slag have effectively been reclaimed and have been utilized in iron and steel enterprise, blast furnace ironmaking gas ash (mud) is because its complicated component is changeable, contain the more heavy metal such as lead, zinc, and very easily enrichment and blast furnace operation, quality product are caused to significant damage in removal process becomes the great difficult problem of restriction steel industry development all the time.Approximately 800～1,000 ten thousand tons of the gas ash (mud) of the annual output of Iron and Steel Enterprises in China, these solid waste things are generally all taked directly outer row to store up, return on a small quantity circulation, are sent cement mill, brick field does the mode of preparing burden and processes, these Disposal Measures have not only taken a large amount of soils, also caused larger resource value waste, easily society and environment are brought to more serious heavy metal contamination burden, run counter to policy and the wish of country to renewable resource recycle completely.
At present domestic gas ash treatment technology is mainly contained to two large classes: i.e. rotary hearth furnace method and rotary kiln reduction volatilization technique.Rotary hearth furnace method taking domestic sunshine iron and steel enterprise as representative (Introduced from Japan Nippon Steel Corp technology), this technology is by blast furnace ironmaking and fume from steel making, iron ore concentrate, carbon dust, binding agent mixed pelletizing, oven dry is placed on rotary hearth furnace, external heat makes Pb, Zn volatilization, collects, and after iron is reduced into metallized pellet simultaneously, can directly add blast furnace utilization.The advantage of this technique is that material component utilization is more reasonable; Shortcoming is that higher impurity is also contained in metal pelletizing after treatment the inside, and can not individual curing gas ash, and facility investment and maintenance cost are higher.Rotary kiln reduction volatilization technique is comparatively general, and it makes full use of gas ash containing the high feature of remaining carbon, by adding a small amount of outer carbon measure, carries out high temperature reduction reaction by directly joining after its simple batching, granulation in kiln.The advantage of this technique is that equipment is simple, and maintenance cost is low, and adaptability to raw material is strong; Shortcoming makes equipment utilization efficiency of heat energy low, a little less than reducing atmosphere.
China is lead-zinc production big country, and along with the fast development of plumbous zinc industry, domestic zinc is smelted production capacity and broken through 5,000,000 tons in continuous 3 years.In recent years, along with the aggravation of the nervous situation of global zinc ore resource, high temperature peracid jarosite process has become the effective ways of processing the low zinc resource of high ferro, this Technology is because adaptability to raw material is strong, metal recovery rate is high, energy consumption is low, adopted by domestic and international more than 90% big-and-middle-sized zinc smelting enterprise, become gradually the leading technical process of industry.Though yellow potassium ferrovanadium technology has obvious advantage compared with conventional wet processing, but it is large also to exist the leaching quantity of slag, iron content is low, poor stability, store up and easily cause the deficiencies such as secondary pollution because of attached heavy metal ion stripping, seepage afterwards, particularly it need separately build Special slag field, and the environmental protection high cost that causes enterprise to pay, becomes the important problem that affects enterprise development and economic benefit gradually.
In current zinc industry, the disposal of iron vitriol slag is only confined to carry out harmless solidification treatment and the comprehensive aspect that reclaims non-ferrous metal, the effect of the effective value of fully exploiting natural resources is poor, and its main recovery method is: pyrogenic process solidifies enrichment and wet method comprehensively reclaims.It is mainly taking high-temperature sintering process, reducing roasting-magnetic method as representative that pyrogenic process solidifies beneficiation technologies, such technology is in fuming concentration of valuable metals, to make alum slag obtain hot setting by fuel such as additional Jiao, coals, thereby reach innoxious characteristic of storing up, although the method has solved the harm problem of storing up in enrichment, but removal process energy consumption is larger, cost is high, easily produces low concentration SO
2smoke pollution, from slag, the value of Efficient Development iron and rare precious metal does not fully demonstrate.Iron vitriol slag wet method Comprehensive Recovery Technology is by adopting acid, alkali reagent and special reactivation process, reaches the object that selectivity leaches, separates, and makes slag valuable metal obtain high efficiency separation and extraction, has reduced the Heavy Metal Pollution of slag; Although this recent years has obtained breakthrough and application, but because of its technical process long, process control is loaded down with trivial details, the toxicity of slag is not thoroughly eliminated, precious metal selects smelting separating effect low, spent process water also needs to carry out environment protection standard processing, thereby has restricted the process of industrialization technology exploitation, causes its economic benefit to fail to fully demonstrate.
In recent years, along with the enhancing of the whole world to resource, environmental protection consciousness, the Chinese government has also strengthened the great attention to heavy metal pollution problem, promulgates successively and has put into effect a series of policies, regulation and file, and give stricting orders enterprise and will strengthen the preventing and controlling to heavy metal contamination; Following national environmental protection policy is by more strict and refinement, and the technical requirements of not only yellow potassium ferrovanadium waste residue being disposed is harsher and severe; Also the management of gas ash (mud) formally can be put under to the useless category of danger simultaneously, cause enterprise's waste residue cost of disposal significantly to rise, and seriously restrict production capacity and benefit lifting.In addition, National Program for Medium-to Long-term Scientific and Technological Development (2006～the year two thousand twenty) is classified " exploitation abnormal pollution control techniques; the application technology as the second resource such as waste; heavy polluted industry cleaner production integrated technology, sets up the technical show-how pattern of developing a circular economy " first develop theme as; " the medium-term and long-term science and technology development planning of non-ferrous metals industry " (2006～the year two thousand twenty) also will " exploitation iron and steel flue dust, reclaim zinc, plumbous technology containing bianchite slag,, classify important subject as.Therefore, employing is comprehensive, advanced, the reasonable disposal to metallurgy industry solid waste (gas ash, iron vitriol slag) is strengthened and promoted to practical new technology, and day is urgently aobvious and important; The utilization of secondary metal resource simultaneously has not only solved ample resources needs of problems, and is the important structure measure of energy-saving and emission-reduction, will be that country " 12 " gives special assistance to strategic novel industry.
Produce 6.3 hundred million tons of steel per year in China, annual steel industry is nearly output gas ash (mud) more than 800 ten thousand tons, by environmental protection per ton dispose take 40 yuan and, national processing costs of paying every year will exceed 3.2 hundred million yuan.If these gas ash are comprehensively reclaimed, (composition is: Fe30%, C25%, Zn10%, comprehensive recovery is by 85%), the economic benefit producing will exceed 17,000,000,000 yuan, the reduced iron powder and the rare metal (as In, Ga, Te etc.) that extract high added value if employ new technology, direct economic benefit will exceed 20,000,000,000 yuan.
If by 5,000,000 tons of calculating of current domestic zinc output, every year output ferrovanadium slag more than approximately 2,500,000 tons, is disposed to 60 yuan of expenses by slag per ton field construction and environmental protection, enterprise is every year by the environmental protection cost of 1.5 hundred million yuan of supplementary paymentses.As these iron vitriol slags are recycled utilization (slag ingredient: Zn6%, Fe32%, In, Ge, Cd, Pb0.8%, comprehensive recovery is by 90%), the direct economic benefit producing will exceed 500,000,000 yuan, if consider, rare precious metal and iron resources reclaim, and overall economic efficiency will reach 1,000,000,000 yuan.
At present, the domestic recovery technology to gas ash (mud) and Jarosite Residues all only limits to carry out independent treating processes according to the characteristic of material, such as: " a kind of technique of utilizing rotary kiln to extract zinc from blast furnace gas mud " (patent No. CN101191159A) of people's inventions such as the Chen Tao of Gangcheng Enterprise General Co., Pangang Group, the Honghe, Yunnan Xin Lian development in science and technology Wang Shu of company limited pattern, " method of comprehensive recovery of iron and non-ferrous metal from Steel Plant's solid waste thing " (patent No. CN101078052A) of people's inventions such as Wang Haoyang, " from blast furnace dust, extract indium metal, zinc, the method of bismuth " (patent No. CN101078053A), patents such as " from the method for blast furnace ironmaking flue dust producing iron powder and recovery non-ferrous metal " (patent No. CN201210179548.8) is all to carry out professional treatment and recovery for the single raw material of gas ash (mud), take full advantage of gas ash high-carbon (C18～25%), high zinc (Zn9～18%), the composition characteristic of low iron (Fe23～29%) carries out fuming reduction enrichment, obtain being rich in the high fluorine chlorine secondary zinc oxide product of multiple valuable metal, though this type of technical scheme is reacted and can thoroughly be eliminated gas ash and put forward the innoxious problem of storing up after zinc process by hot setting, but the utilising efficiency to carbon resource more than needed in gas ash is low, in slag because smelting separating effect is selected in the lower impact of iron grade, can only obtain the iron fine powder of low output capacity, mixed economy development benefit is limited, simultaneous reactions process waste heat fails to obtain effective recycling, causes energy consumption higher.And Guangxi University's grain seapeak, " a kind of method of utilizing ammonium jarosite slag oxygenerating iron oxide black " (patent No. CN102718267A) of people's inventions such as Wang Yuhong, Shen, Guangxi chess-playing circles, Qin Shuhong invention " high indium high-iron zinc sulfide concentrate is indium, iron, silver, the new process for recovering metals such as tin " (patent No. CN1074464C), it is by Jarosite Residues warp that the Chen Zhi of Changsha Mining & Metallurgy Inst flies the patented technologies such as " technique of iron vitriol slag extracting indium by roasting and leaching " (patent No. CN1221800A) of invention such as people such as grade, after low-temperature bake pre-treatment, carry out again wet method and extract the process of zinc and rare precious metal.Its process characteristic is for the low zinc of iron vitriol slag (Zn5～6%), high ferro (Fe28～36%), high rare precious metal (In0.05～0.1%, Ag300～600g/t) feature, join Jiao's (or coal) outward as fuel and reductive agent, by low temperature transformation of crystal or high temperature fuming volatilization, reach the object of separation, enrichment.Although this type of technology also can effectively be extracted the valuable metal in iron vitriol slag, need to consume a large amount of fuel, simultaneously because the decomposition of vitriol in slag causes SO in flue gas
2concentration higher (approximately 1～3% left and right), not only etching apparatus and refractory materials, and recovery and difficulty of governance large, affect kiln slag and select iron effect, easily cause kiln ring formation phenomenon, cause technological development high cost.
Two class patented technologies in sum, all only be confined to specialize in from single angle of planting material characteristic, cause the value advantage of two class secondary resources to fail to give full play to, resource overall synthetic utilizes level lower, and to improving China's metallurgy industry energy-saving and emission-reduction, develop a circular economy, set up completely clean production development pattern and promote that dynamics is limited.Therefore, under current technology and envrionment conditions, gas ash and two kinds of solid waste resources of ferrovanadium slag are taken into account and carried out innoxious comprehensive recovery, performance complementary advantage, not only eliminate the harm to environment, also reduce environmental protection of enterprise cost, and can improve the level of iron resources and the exploitation of non-ferrous metal high added value, there is very major and immediate significance.
Summary of the invention
For solving above-mentioned two kinds of deficiencies that resource exists in recycling process, the invention provides the device of a kind of comprehensive recovery solid waste gas ash, ferrovanadium slag, this device can utilize the feature that gas ash carbon is high, iron is low and iron vitriol slag iron is high, rare precious metal content is many, performance material composition is had complementary advantages, and utilizes reaction self-heating condition to reach the object of comprehensive recovery and harmless treatment.Adopt this covering device comprehensively to reclaim solid waste gas ash, ferrovanadium slag, have valuable metal accumulation rate high, consume fuel is few, and the advantage that comprehensive utilization of resources level is high can also obtain the reduced iron powder product of high added value.
For achieving the above object, the present invention is by being achieved by the following technical solutions: a kind of solid waste gas ash, containing zinc-iron vanadium slag comprehensive recovery device, mainly comprise feeding device, rotary kiln, flue gas processing device and scum treatment unit, described feeding device involving vibrations feeder and reinforced conveyor, reinforced conveyor upstream connects vibrations feeder discharge port, and downstream connects rotary kiln opening for feed; Described rotary kiln is for carrying out fuming volatilization processing to solid waste gas ash and ferrovanadium slag mixture, and its smoke outlet connects flue gas processing device, and its slag notch is established slag bath, and by transporter, scum is transferred to scum treatment unit; Described flue gas processing device comprises the settling pocket, waste heat boiler, surface cooler, bag filter, thionizer and the chimney that connect successively; Described scum treatment unit comprises connected successively crusher, ball mill, grading machine, magnetic separator, secondary ball mill, shaking table, dry kiln, with the flash distillation machine of hotblast stove, described flash distillation machine exhanst gas outlet is connected chimney by dust collecting system with induced draft fan.
Further, described vibrating feeder is by the driving grasping operation loading hopper of grabbing bucket.
Described rotary kiln configuration gas blower, arranges induced draft fan between described bag filter and thionizer.
Described transporter is driving grab bucket or forklift.
Further, described settling pocket is connected vibrating feeder with waste heat boiler slag notch by conveyor.
Adopt said apparatus; can realize to solid waste gas ash, comprehensively reclaim containing zinc-iron vanadium slag; industrialization, large-scale degree are also higher; not only can well improve China's metallurgy industry metal secondary resource level of comprehensive utilization; also solved the resource existing in two industry developments reclaims and the general character difficult problem of recycle simultaneously; reach energy-saving and emission-reduction, the effect of developing a circular economy, realized minimizing, the recycling of waste resource, the object of recirculation.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
In figure, 1 is driving (claw bucket sling), 2 is loading hopper, 3 is vibrating feeder, 4 is reinforced conveyor, 5 is kiln hood gas blower, 6 is slag bath, 7 is rotary kiln, 8 is settling pocket, 9 is waste heat boiler, 10 is surface cooler, 11 is bag filter, 12 is induced draft fan, 13 is thionizer, 14 is chimney, 15 is forklift, 16 is crusher, 17 is vibratory screening apparatus, 18 is conveyor, 19 is ball mill, 20 grading machines, 21 is magnetic separator, 22 is secondary ball mill, 23 is shaking table, 24 is conveyor, 25 is dry kiln, 26 is hotblast stove, 27 is flash distillation machine, 28 is dust collecting system, 29 is the induced draft fan that gathers dust, 30 is chimney.
Embodiment
With reference to figure 1, solid waste gas ash of the present invention, containing zinc-iron vanadium slag comprehensive recovery device, mainly comprise feeding device, rotary kiln, flue gas processing device and scum treatment unit, centered by rotary kiln 7, feeding device will prepare solid waste gas ash, be delivered to the opening for feed of rotary kiln 7 containing zinc-iron vanadium slag raw material, and flue gas processing device and scum treatment unit are connected respectively exhanst gas outlet and the kiln slag outlet of rotary kiln.
Described feeding device involving vibrations feeder 3 and reinforced conveyor 4, reinforced conveyor upstream connects vibrations feeder discharge port, and downstream connects rotary kiln opening for feed; Described rotary kiln is for carrying out fuming volatilization processing to solid waste gas ash and ferrovanadium slag mixture, and its smoke outlet connects flue gas processing device, and its slag notch is established slag bath 6, and by transporter, scum is transferred to scum treatment unit; Described flue gas processing device comprises the settling pocket 8, waste heat boiler 9, surface cooler 10, bag filter 11, thionizer 13 and the chimney 14 that connect successively; Described scum treatment unit comprises connected successively crusher 16, ball mill 19, grading machine 21, magnetic separator 21, secondary ball mill 22, shaking table 23, dry kiln 25, with the flash distillation machine 27 of hotblast stove 26, described flash distillation machine 27 exhanst gas outlets are connected chimney 30 by dust collecting system 28 with induced draft fan 29; Described vibrating feeder 3 is by the driving 1 grasping operation loading hopper 2 of grabbing bucket; Described rotary kiln 7 configures gas blower 5; Between described bag filter 11 and thionizer 13, induced draft fan 12 is set; Described transporter is driving grab bucket or forklift 15.
Further, the slag notch of described settling pocket 8 and waste heat boiler 9 is connected vibrating feeder 3 by conveyor.
Adopt the Production Flow Chart of this comprehensive recovery device as follows:
(1) batching is granulated: by gas ash (mud) and Jarosite Residues according to (2～5): 1 ratio mixes, then allocate into after 15～30% coke powder (or hard coal), 1～5% additive, being delivered to disk pelletizing machine granulates, control discharging-material size is 6～12mm, moisture content is 18～25%, and the material after granulating is stored up to dry 16～32h naturally;
(2) rotary kiln fuming volatilization: the pellet after above-mentioned seasoning is sent in rotary kiln by kiln tail tremie pipe by the belt that feeds in raw material, controlling reaction zone kiln temperature is 1000～1300 DEG C, reaction times 3～6h, kiln end temperature is 400～600 DEG C, kiln tail negative pressure is 0～50Pa, kiln hood pressure of blast is 0.05～0.20MPa, and zinc and other valuable metals in raw material are fully reacted and reduction volatilization; Kiln slag carries out shrend cooling after being discharged by kiln hood, and flue gas is discharged and gathered dust through air inducing by kiln tail.
(3) scum processing: by cooled iron content kiln slag in above-mentioned rotary kiln fuming volatilization process, be transported to beneficiation combined method workshop by claw bucket sling, after two-stage crushing, screening, ball milling, make and be less than 100 object 20% ore pulps, adopt strong magnetic separator to isolate containing Fe and be greater than 65% crude iron powder; Crude iron powder is again through three sections of ball mill ore grindings, output reduced iron powder and iron fine powder after the classification of high-efficiency helical grading machine, and reduced iron powder can obtain granularity and be less than the commodity reduced iron powder that 120 orders, MFe are greater than 92% after expansion drying and pneumatic classification.Ore dressing tail mud carries out liquid-solid separation after Floatation of Removal Carbon, obtains the carbon powder of carbon containing 68%, returns batching and recycles, and tail mud can be delivered to Building Materials Factory as environment-friendly building materials raw material after filter-press dehydration.
(4) flue gas processing: the flue gas that kiln tail in above-mentioned rotary kiln fuming volatilization process is discharged, remove macrobead flue dust through gravity settling chamber, and be cooled to 130～200 DEG C through waste heat boiler, then enter negative pressure bagroom and carry out dedusting, tail gas after gathering dust is delivered to Pneumatic emulsifying desulfurizing tower through induced draft fan and is carried out desulphurization and denitration, and through 60m chimney qualified discharge.Settling pocket gray back is returned to step (1) through closed embedded scraper transporter and is prepared burden, waste heat boiler and bagroom are collected the secondary zinc oxide flue dust getting off and are delivered to warehouse through water-cooled embedded scraper transporter, extract zinc and other rare precious metals for next step.
Gas ash (mud) in above-mentioned steps (1) is produced dust-removal cloth-bag ash by iron and steel enterprise's iron-smelting blast furnace.
Jarosite Residues in above-mentioned steps (1) is produced leached mud by zinc smelting industry high temperature peracid jarosite process.
The additive using in above-mentioned steps (2) is one or several combinations in industrial silicon sand, lime, slaked lime or calcium carbonate.
Floatation of Removal Carbon process institute with medicament in above-mentioned steps (3), collecting agent is more than one among kerosene, oil, solar oil, paraffin, 2# wet goods; Pore forming material is fusel, secondary octanol, fatty oil etc.; Adjusting agent is more than one in water glass, sodium carbonate, sodium sulphite, sodium hydroxide, starch, xylogen, humic acids.
Tail mud waste in above-mentioned steps (3) is the silicate glass body after rotary kiln hot setting, without solvability murder by poisoning again, can store up for a long time or utilize.
In above-mentioned steps (4), involved tail gas Pneumatic emulsifying desulfurizing tower is the environment treating facility that exclusive enterprise manufactures, and the interpolation medicament of its circulating absorption solution is commercially available NaOH, slaked lime or unslaked lime.
The secondary zinc oxide product composition obtaining in above-mentioned steps (4) is: Zn50-60%; Pb8～10%; In0.07～0.12%:Fe0.6～1.5%; Cl2.1～3.8%; F0.03～0.08%.
In this process, main economic and technical indices is:
Metal evaporation rate: Zn>95%, Pb>95%, Bi>91%, In>93%;
Non-ferrous metal total yield >97%, Fe>99%;
Metal enrichment ratio is 8～10 times;
Rotary kiln unit volume productivity: 1.8～2.5 tons/m
3d;
Coal-fired (Jiao) ratio: 15～20%, Second-rate zinc oxide powder output capacity: 20～25%;
Iron fine powder grade >65%, a reduced iron powder output capacity >55%;
The present invention not only can well improve China's metallurgy industry metal secondary resource level of comprehensive utilization, also solved the resource existing in two industry developments reclaims and the general character difficult problem of recycle simultaneously, reach energy-saving and emission-reduction, the effect of developing a circular economy, realized minimizing, the recycling of waste resource, the object of recirculation.
The present invention makes full use of the feature of resources advantage complementation, and not only having solved gas mud, to carry in zinc process secondary zinc oxide product fluorine cl content high, subsequent disposal difficulty, the industry difficult problem that mass-producing additional processing cost is high; The crux of also eliminated that fuel cost in iron vitriol slag pyrogenic attack process is high, kiln age is short, tail gas SO2 intractability is large, the solution of zero cost storing up of two class industry solid wastes, disposal difficulties; Simultaneously in the process of recovery non-ferrous metal, break through conventional fire reduction control gordian technique, the reduced iron powder product that can disposablely obtain high added value, has improved the economic benefit of the utilization of resources greatly, and the total recovery utilization rate of resource valuable metal is arrived more than 98%.
Claims (4)
- Solid waste gas ash, containing a zinc-iron vanadium slag comprehensive recovery device, mainly comprise feeding device, rotary kiln, flue gas processing device and scum treatment unit, it is characterized in that:Described feeding device involving vibrations feeder and reinforced conveyor, reinforced conveyor upstream connects vibrations feeder discharge port, and downstream connects rotary kiln opening for feed;Described rotary kiln is for carrying out fuming volatilization processing to solid waste gas ash and ferrovanadium slag mixture, and its smoke outlet connects flue gas processing device, and its slag notch is established slag bath, and by transporter, scum is transferred to scum treatment unit;Described flue gas processing device comprises the settling pocket, waste heat boiler, surface cooler, bag filter, thionizer and the chimney that connect successively;Described scum treatment unit comprises connected successively crusher, ball mill, grading machine, magnetic separator, secondary ball mill, shaking table, dry kiln, flash distillation machine with hotblast stove, described flash distillation machine exhanst gas outlet is connected chimney by dust collecting system with induced draft fan, and described vibrating feeder is by the driving grasping operation loading hopper of grabbing bucket.
- 2. comprehensive recovery device according to claim 1, is characterized in that: described rotary kiln configuration gas blower, arranges induced draft fan between described bag filter and thionizer.
- 3. comprehensive recovery device according to claim 1, is characterized in that: described transporter is driving grab bucket or forklift.
- 4. according to the comprehensive recovery device one of claim 1-3 Suo Shu, it is characterized in that: described settling pocket is connected vibrating feeder with waste heat boiler slag notch by conveyor.
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| CN104846217A (en) * | 2015-04-21 | 2015-08-19 | 昆明理工大学 | Method for leaching and recovering zinc from blast furnace dust by multi-ligand composite coordination ammonia process and device thereof |
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| CN108330277A (en) * | 2018-02-09 | 2018-07-27 | 灵武市永宏工贸有限公司 | A kind of improved environment-friendly type zinc leaching residue technique |
| CN108889414A (en) * | 2018-08-18 | 2018-11-27 | 深圳阿尔泰克轻合金技术有限公司 | Aluminium content sensing equipment in a kind of aluminium slag |
| CN109046749A (en) * | 2018-08-27 | 2018-12-21 | 威海市海王旋流器有限公司 | A kind of blast furnace ash efficient separation purification system and method for purification |
| CN110129582A (en) * | 2019-05-27 | 2019-08-16 | 关宇 | A kind of hot wind separates the process of Zn-ef ficiency in waste |
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| CN113981228A (en) * | 2021-10-14 | 2022-01-28 | 辽宁科技大学 | A method for inhibiting ring formation in kiln and improving zinc recovery rate |
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