CN101839645B - Equipment for recovering valuable metals from zinc-contained slag - Google Patents
Equipment for recovering valuable metals from zinc-contained slag Download PDFInfo
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- CN101839645B CN101839645B CN2009101671318A CN200910167131A CN101839645B CN 101839645 B CN101839645 B CN 101839645B CN 2009101671318 A CN2009101671318 A CN 2009101671318A CN 200910167131 A CN200910167131 A CN 200910167131A CN 101839645 B CN101839645 B CN 101839645B
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Abstract
The invention discloses equipment for recovering valuable metals from zinc-contained slag, comprising a melting furnace, a top-blown spray gun which is inserted into the hearth from the top of the melting furnace so as to spray oxygen-contained gas and pulverized coal into the hearth and a side-blown spray gun which is inserted into the hearth from the side of the melting furnace so as to spray the oxygen-contained gas and the pulverized coal into the melting pool, a fuming furnace and a fuming furnace spray gun, wherein a hearth is limited in the melting furnace; the hearth is divided into an upper part and a lower part; the lower hearth is a melting pool; the melting furnace is provided with a charging hole, a smoke outlet and a melted slag outlet; the fuming furnace is provided with a feeding hole, a smoke outlet, a waste slag outlet and an air inlet arranged on the upper part of the fuming furnace, wherein the feeding hole is connected with the melted slag outlet of the melting furnace; and the fuming furnace spray gun is inserted into the fuming furnace so as to spray the oxygen-contained gas and the pulverized coal into the fuming furnace. The equipment for recovering the valuable metals from the zinc-contained slag can continuously work and has high slag treatment capacity and high recovery rate of the valuable metals.
Description
Technical field
The present invention relates to a kind of equipment that from residues containing zinc, reclaims valuable metal, especially relate to a kind of equipment that from the zinc metallurgy residue, reclaims valuable metal.
Background technology
Zinc smelting dreg is rich in valuable metals such as zinc, lead, silver, antimony usually, need reclaim.In addition, zinc smelting dreg is put into " national hazardous waste register ", and the metallurgical slag that contains great amount of soluble zinc, plumbous type salt belongs to a pollutant especially, need carry out harmless treatment.
The conventional process of zinc smelting dreg adopts rotary kiln evaporation method basically, and for example one Chinese patent application CN1405338A has described a kind of method of utilizing rotary kiln to handle zinc smelting dreg.Rotary kiln evaporation method is as traditional zinc smelting dreg treatment process, and its significant disadvantages is arranged: operating rate is low, and life-span of kiln liner is short, and comprehensive energy consumption is high, and treating capacity is little, and investment is big, and the coke consumption amount is big, and tailings contains Zn, C is high.
One Chinese patent application CN1878879A has described a kind of technology of handling zinc residue, has overcome the part shortcoming of traditional rotary kiln evaporation method to a certain extent.But the fusing of above-mentioned technology and redox are carried out in a reaction vessel, can't realize working continuously, so operating rate are low, and the slag treating capacity is restricted, and the valuable metal content in the waste is still higher.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, one object of the present invention is to propose a kind of equipment that from residues containing zinc, reclaims valuable metal, and the fusing of residues containing zinc and redox are separately carried out, thereby can realize working continuously, and operating efficiency improves, and the valuable metal content in the waste is low.
According to the equipment that from residues containing zinc, reclaims valuable metal of the present invention; Comprise: melting furnace, the inner burner hearth that limits of said melting furnace, said burner hearth is divided into the upper and lower; The burner hearth of its middle and lower part is the molten bath, and said melting furnace has charge door, outlet flue and liquid slag outlet; Top-blown spray gun, said top-blown spray gun inserts in the burner hearth in burner hearth, to spray into oxygen-containing gas and coal dust from the top of melting furnace;
Side-blown spray gun, said side-blown spray gun is inserted in the burner hearth in the molten bath, to spray into oxygen-containing gas and coal dust from the side of melting furnace; Fuming furnace, said fuming furnace have charging aperture, exhanst gas outlet, waste outlet and are positioned at the air inlet on fuming furnace top, and wherein said charging aperture links to each other with the liquid slag outlet of melting furnace; With the fuming furnace spray gun, said fuming furnace spray gun is inserted in the fuming furnace in fuming furnace, to spray into oxygen-containing gas and coal dust.
According to the equipment that from residues containing zinc, reclaims valuable metal of the present invention, the fusing of residues containing zinc and redox are carried out in independent melting furnace and fuming furnace, therefore can realize the serialization operation, and efficient improves, and the valuable metal content in the waste reduces.
In addition, the equipment that from residues containing zinc, reclaims valuable metal according to the present invention also has following additional technical feature:
Said melting furnace further comprises the valuable metal floss hole that is located at the bottom.In the process that in melting furnace, melts, part valuable metal for example lead might be reduced out, and therefore in the bottom of melting furnace the valuable metal floss hole being set regularly emits the valuable metal that restores.
Said melting furnace further comprises the insulation nozzle that is inserted into from the side of melting furnace in the burner hearth.Through the insulation nozzle is set, keep the temperature in the melting furnace when being discharged into the liquid slag in the melting furnace in the fuming furnace and during blow-on.
Said melting furnace further comprises and is formed on its side and is positioned at the overfiren air port that molten bath top is used for sending into to upper furnace oxygen-containing gas.
Said melting furnace further comprises and is formed on its side and is positioned at the tertiary air orifice that overfiren air port top is used for sending into to upper furnace oxygen-containing gas.
In upper furnace, send into oxygen-containing gas through overfiren air port and tertiary air orifice, the reaction of carbon monoxide that produces in oxygen and the fusion process generates harmless carbon dioxide.
The said equipment that from residues containing zinc, reclaims valuable metal further comprises waste heat boiler, and the mouth that advances of wherein said waste heat boiler links to each other with the outlet flue of melting furnace and the exhanst gas outlet of fuming furnace.
Through waste heat boiler is set, effectively in the recycle melting furnace with the flue gas stove in the heat of the flue gas that produces, thereby practiced thrift cost, reduced the waste of the energy.And the steam of the oxide of the part valuable metal that in melting furnace, produces the also steam of the oxide of the valuable metal in fuming furnace has obtained recovery.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the sketch map that from residues containing zinc, reclaims the equipment of valuable metal according to the embodiment of the invention;
Fig. 2 is the sketch map of the melting furnace of the equipment that from residues containing zinc, reclaims valuable metal shown in Figure 1;
Fig. 3 is the sketch map of the fuming furnace of the equipment that from residues containing zinc, reclaims valuable metal shown in Figure 1.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; The orientation of indication such as term " top ", " below ", " side ", " top ", " end " or position relation are for concerning based on orientation shown in the drawings or position; Only be for the ease of describing the present invention rather than requiring the present invention therefore can not be interpreted as limitation of the present invention with specific azimuth configuration and operation.
Be described in detail with reference to the attached drawings the equipment that from residues containing zinc, reclaims valuable metal below according to the embodiment of the invention.
Shown in Fig. 1-3, comprise melting furnace 1, fuming furnace 2, top-blown spray gun 3, side-blown spray gun 4 and fuming furnace spray gun 8 according to the equipment that from residues containing zinc, reclaims valuable metal of the embodiment of the invention.
As illustrated in fig. 1 and 2, the melting furnace 1 inner burner hearth that limits, burner hearth is divided into upper furnace A and lower furnace B, and wherein lower furnace B is as the molten bath of fusing residues containing zinc.Melting furnace 1 has charge door 11, outlet flue 13 and liquid slag outlet 12.Charge door 11 is used in burner hearth adding residues containing zinc and other slag former, beans etc.Outlet flue 13 is used to discharge the flue gas that produces in the melting furnace 1.Liquid slag outlet 12 is used to discharge the residues containing zinc of fusing.
As illustrated in fig. 1 and 2, it is interior in burner hearth, to spray into oxygen-containing gas and coal dust that top-blown spray gun 3 inserts burner hearth from the top (top Fig. 1 and 2) of melting furnace 1, and said oxygen-containing gas can be oxygen-enriched air, also can be purer oxygen.Side-blown spray gun 4 is inserted in the burner hearth in the molten bath, to spray into oxygen-containing gas and coal dust from the side of melting furnace 1.
More specifically, the lower end of top-blown spray gun 3 is positioned at molten bath B top, and promptly top-blown spray gun 3 is not inserted in the molten bath, and top-blown spray gun 3 also can be inserted in the B of molten bath certainly.Side-blown spray gun 4 is inserted in the B of molten bath.
In an example of the present invention, the bottom of melting furnace 1 also is provided with valuable metal floss hole 14, is used to give off the part valuable metal that restores in the melting furnace 1, and is for example plumbous.
Alternatively, also be provided with the insulation nozzle 7 that is inserted in the burner hearth, be used for when the residues containing zinc of blow-on and discharging fusion, keeping the temperature in the melting furnace 1 in side from melting furnace 1.
As illustrated in fig. 1 and 2, in an example of the present invention, be provided with overfiren air port 5 and tertiary air orifice 6 in the side of melting furnace 1 and above being positioned at molten bath B, be respectively applied in upper furnace A and send into oxygen-containing gas, for example air.The a part of coal dust oxidation that sprays in the melting furnace 1 has generated carbon monoxide, in upper furnace A, sends into oxygen with tertiary air orifice 6 through overfiren air port 5 is set, thereby carbon monoxide is oxidized to carbon dioxide, reduces pollution and harm that flue gas brings.In addition; Because the part valuable metal that in melting furnace 1, restores; A part of valuable metal wherein is raised in the upper furnace A with steam in form, and the oxygen of sending into through overfiren air port 5 and tertiary air orifice 6 is oxidized to the oxide of gaseous state with metallic vapour, thereby reclaims.
Though described above overfiren air port 5 and tertiary air orifice 6 are set, need to prove that this only is for the convenience of describing,, overfiren air port can only be set, the air port also can be set four times according to concrete needs.
As shown in figs. 1 and 3, fuming furnace 2 has charging aperture 21, exhanst gas outlet 22, waste outlet 23 and is positioned at the air inlet 24 on fuming furnace top.Fuming furnace 2 for example can be supported by framework 10.Charging aperture 21 links to each other with the liquid slag outlet 12 of melting furnace 1, thereby is transported in the fuming furnace 2 from melting furnace 1 interior liquid slag of discharging.Here, need to prove that term " links to each other " and should make broad understanding, for example comprise directly linking to each other, or link to each other etc., as long as can be transported in the fuming furnace 2 in the melting furnace 1 liquid slag just passable through chute through path.
Fuming furnace spray gun 8 is inserted in the fuming furnace 2 to spray into oxygen-containing gas and coal dust in the liquid slag in fuming furnace.
As shown in Figure 1; In an example of the present invention; The equipment that from residues containing zinc, reclaims valuable metal according to the embodiment of the invention also comprises waste heat boiler 9; The mouth that advances of waste heat boiler 9 links to each other with the outlet flue 13 of melting furnace 1 and the exhanst gas outlet 22 of fuming furnace 2, thus the waste heat in recovery and the recycle flue gas.
Below the simple operation of equipment of describing according to the embodiment of the invention that from residues containing zinc, reclaims valuable metal.
In melting furnace 1, add beans and residues containing zinc through charge door 11, for example zinc smelting dreg or leached mud alternatively, also add slag former etc. simultaneously.In burner hearth, spray into oxygen-containing gas and coal dust through top-blown spray gun 3 and side-blown spray gun 4.Top-blown spray gun 3 makes the molten bath vigorous agitation with two strands of high velocity airs that side-blown spray gun 4 sprays into, and has strengthened the inner heat and mass transfer process in molten bath greatly, and furnace charges such as the residues containing zinc that falls into will melt fast.The burning of fine coal and oxygen reaction provides in the melting furnace 1 furnace charge such as cadmia to melt needed heat, makes to keep 1400-1500 ℃ hot environment in the stove, accomplishes the slag process.In addition, the coal dust of few part promptly keeps weak reducing atmosphere in the melting furnace 1, thereby the valuable metal in the residues containing zinc is restored as reducing agent, and for example a spot of Zn and Ag are reduced into and are metal, and Pb is reduced to metallic lead and Pb
2O.Metallic lead is regularly emitted from valuable metal floss hole 14, Pb
2The oxygen that O is sent into through overfiren air port 5 and tertiary air orifice 6 in upper furnace with Zn, Ag metallic vapour is oxidized to the gaseous metal oxide once more.And the dioxygen oxidation of being sent into through overfiren air port 5 and tertiary air orifice 6 when coal dust enters in the upper furnace A with the carbon monoxide that oxygen reaction generates becomes carbon dioxide.At last, flue gases such as carbon dioxide and gaseous state metal oxide get into waste heat boiler 9 recovery waste heats from outlet flue 13, are reclaimed by dust collecting system at last.
Liquid slag after the fusing discharges from liquid slag outlet 12, and is transported in the fuming furnace 2.Fuming furnace spray gun 8 sprays into oxygen-containing gas and coal dust in liquid slag, most coal dust is strong reducing atmosphere in the fuming furnace 2 promptly as reducing agent, and the coal dust of few part and oxygen reaction burning improve the required heat of insulation.Thereby; Valuable metals such as the Zn in the liquid slag, Pb, Ag are reduced and volatilize with vapor form; Reoxidized the back on the top of fuming furnace 2 by the oxygen of sending into through air inlet 24 (for example air) and discharge entering waste heat boiler 9 recovery waste heats from exhanst gas outlet 22; Get into the back segment dust collecting system then, be recovered utilization with the form of metal oxide flue dust.Remaining waste contains the Zn and the Pb of minute quantity in the fuming furnace 2, and how the forms with insoluble silicate exist, and are a kind of harmless slag, discharges through waste outlet 23, can be used as the additive of making cement or paveio(u)r etc.
Therefore, according to the equipment that from residues containing zinc, reclaims valuable metal of the present invention, because fusing and redox are separately carried out; Therefore can work continuously, the fusing of slag and fuming reciprocal influence are little, have improved operating rate thus; And the valuable metal content in the waste is few, has improved the rate of recovery.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (6)
1. an equipment that from residues containing zinc, reclaims valuable metal is characterized in that, comprising:
Melting furnace, the inner burner hearth that limits of said melting furnace, said burner hearth is divided into the upper and lower, and the burner hearth of its middle and lower part is the molten bath, and said melting furnace has charge door, outlet flue and liquid slag outlet;
Top-blown spray gun, said top-blown spray gun inserts in the burner hearth in burner hearth, to spray into oxygen-containing gas and coal dust from the top of melting furnace;
Side-blown spray gun, said side-blown spray gun is inserted in the burner hearth in the molten bath, to spray into oxygen-containing gas and coal dust from the side of melting furnace;
Fuming furnace, said fuming furnace have charging aperture, exhanst gas outlet, waste outlet and are positioned at the air inlet on fuming furnace top, and wherein said charging aperture links to each other with the liquid slag outlet of melting furnace; With
Fuming furnace spray gun, said fuming furnace spray gun are inserted in the fuming furnace in fuming furnace, to spray into oxygen-containing gas and coal dust.
2. the equipment that from residues containing zinc, reclaims valuable metal according to claim 1 is characterized in that said melting furnace further comprises the valuable metal floss hole that is located at the bottom.
3. the equipment that from residues containing zinc, reclaims valuable metal according to claim 1 is characterized in that, said melting furnace further comprises the insulation nozzle that is inserted into from the side of melting furnace in the burner hearth.
4. the equipment that from residues containing zinc, reclaims valuable metal according to claim 1 is characterized in that, said melting furnace further comprises and is formed on its side and is positioned at the overfiren air port that the top, molten bath is used for sending into to upper furnace oxygen-containing gas.
5. the equipment that from residues containing zinc, reclaims valuable metal according to claim 4 is characterized in that, said melting furnace further comprises and is formed on its side and is positioned at the tertiary air orifice that the overfiren air port top is used for sending into to upper furnace oxygen-containing gas.
6. the equipment that from residues containing zinc, reclaims valuable metal according to claim 1 is characterized in that further comprise waste heat boiler, the mouth that advances of wherein said waste heat boiler links to each other with the outlet flue of melting furnace and the exhanst gas outlet of fuming furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101671318A CN101839645B (en) | 2009-08-24 | 2009-08-24 | Equipment for recovering valuable metals from zinc-contained slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101671318A CN101839645B (en) | 2009-08-24 | 2009-08-24 | Equipment for recovering valuable metals from zinc-contained slag |
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| CN101839645A CN101839645A (en) | 2010-09-22 |
| CN101839645B true CN101839645B (en) | 2012-12-26 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102198428B (en) * | 2011-04-13 | 2013-01-02 | 济源市东方化工有限责任公司 | Carbon floatation production method after iron separation of zinc slag in rotary kiln in zinc industry |
| ITAN20120043A1 (en) * | 2012-04-17 | 2013-10-18 | Pontenossa S P A | SCORIE PYROMETHALURGICAL TREATMENT |
| CN103937985B (en) * | 2014-04-18 | 2016-03-30 | 中国恩菲工程技术有限公司 | Continous way fuming furnace and adopt its continuous fuming technique |
| CN104046794A (en) * | 2014-05-13 | 2014-09-17 | 中国恩菲工程技术有限公司 | Bottom blowing tin smelting device |
| CN104561562A (en) * | 2014-12-08 | 2015-04-29 | 广西泰星电子焊接材料有限公司 | Fuming furnace for performing dilution treatment on low-grade metal mineral aggregate |
| CN111351356B (en) * | 2020-04-27 | 2021-01-15 | 内蒙古兴安银铅冶炼有限公司 | Fuming furnace body |
| CN113073205B (en) * | 2021-03-05 | 2022-12-09 | 中国恩菲工程技术有限公司 | Zinc smelting equipment and zinc smelting process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314954A (en) * | 1998-09-04 | 2001-09-26 | 技术资源有限公司 | Direct smelting process |
| CN1540006A (en) * | 2003-10-24 | 2004-10-27 | 广西堂汉锌铟有限公司 | Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| CN1584075A (en) * | 2004-05-25 | 2005-02-23 | 云南冶金集团总公司 | Powder fuel spray melting method for slegs of top blowing immersion melting furnace in blast furnace |
| CN1693497A (en) * | 2005-06-16 | 2005-11-09 | 中国有色工程设计研究总院 | Smelting method and device of molten lead oxidation slag |
| CN201273767Y (en) * | 2008-08-01 | 2009-07-15 | 中国恩菲工程技术有限公司 | Multifunctional industrial furnace and continuous smelting system comprising the industrial furnace |
| CN201440037U (en) * | 2009-08-24 | 2010-04-21 | 中国恩菲工程技术有限公司 | Device for recovering valuable metal from zincy slag |
-
2009
- 2009-08-24 CN CN2009101671318A patent/CN101839645B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314954A (en) * | 1998-09-04 | 2001-09-26 | 技术资源有限公司 | Direct smelting process |
| CN1540006A (en) * | 2003-10-24 | 2004-10-27 | 广西堂汉锌铟有限公司 | Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| CN1584075A (en) * | 2004-05-25 | 2005-02-23 | 云南冶金集团总公司 | Powder fuel spray melting method for slegs of top blowing immersion melting furnace in blast furnace |
| CN1693497A (en) * | 2005-06-16 | 2005-11-09 | 中国有色工程设计研究总院 | Smelting method and device of molten lead oxidation slag |
| CN201273767Y (en) * | 2008-08-01 | 2009-07-15 | 中国恩菲工程技术有限公司 | Multifunctional industrial furnace and continuous smelting system comprising the industrial furnace |
| CN201440037U (en) * | 2009-08-24 | 2010-04-21 | 中国恩菲工程技术有限公司 | Device for recovering valuable metal from zincy slag |
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