CN201440037U - Device for recovering valuable metal from zincy slag - Google Patents
Device for recovering valuable metal from zincy slag Download PDFInfo
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- CN201440037U CN201440037U CN2009201701696U CN200920170169U CN201440037U CN 201440037 U CN201440037 U CN 201440037U CN 2009201701696 U CN2009201701696 U CN 2009201701696U CN 200920170169 U CN200920170169 U CN 200920170169U CN 201440037 U CN201440037 U CN 201440037U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model discloses a device for recovering valuable metals from zincy slag, which comprises a melting furnace, a top blowing lance, a side blowing lance, a fuming furnace and a fuming furnace lance, wherein a hearth is limited inside the melting furnace and comprises an upper hearth and a lower hearth, and lower hearth is of a melting pool; the melting furnace comprises a feed inlet, a smoke outlet and a liquid slag outlet, and the top blowing lance is inserted in the hearth from the top of the melting furnace to spray oxygen-containing gas and coal fines into the hearth; a side blowing lance is inserted in the hearth from the side of the melting furnace to spray the oxygen-containing gas and the coal fines into the melting pool, and the fuming furnace comprises a feed inlet, a flue gas outlet, a waste slag outlet and an air inlet positioned at the upper part of the fuming furnace; and the fuming furnace lance is inserted in the fuming furnace to spray the oxygen-containing gas and the coal fines into the fuming furnace. The device for recovering valuable metals from zincy slag has the advantages of continuous operation, high slag processing capacity, and high recovery rate of the valuable metals.
Description
Technical field
The utility model relates to a kind of equipment that reclaims valuable metal from residues containing zinc, especially relates to a kind of equipment that reclaims valuable metal from the zinc metallurgy residue.
Background technology
Zinc smelting dreg is rich in valuable metals such as zinc, lead, silver, antimony usually, need be reclaimed.In addition, zinc smelting dreg is put into " national hazardous waste register ", and the metallurgical slag that contains great amount of soluble zinc, plumbous class 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 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, the comprehensive energy consumption height, and treating capacity is little, and investment is big, and the coke consumption amount is big, and tailings contains Zn, C is high.
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.
The utility model content
The utility model is intended to solve at least one of technical problem that exists in the prior art.For this reason, a purpose of the present utility model is to propose a kind of equipment that reclaims valuable metal from residues containing zinc, 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 utility model, comprise: melting furnace, the inner burner hearth that limits of described melting furnace, described burner hearth is divided into the upper and lower, the burner hearth of its middle and lower part is the molten bath, and described melting furnace has charge door, outlet flue and liquid slag outlet; Top-blown spray gun, described top-blown spray gun inserts in the burner hearth to spray into oxygen-containing gas and coal dust in burner hearth from the top of melting furnace;
Side-blown spray gun, described side-blown spray gun is inserted in the burner hearth to spray into oxygen-containing gas and coal dust in the molten bath from the side of melting furnace; Fuming furnace, described 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, described fuming furnace spray gun is inserted in the fuming furnace to spray into oxygen-containing gas and coal dust in fuming furnace.
According to the equipment that reclaims valuable metal from residues containing zinc of the present utility model, 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 reclaims valuable metal according to the utility model from residues containing zinc also has following additional technical feature:
Described melting furnace further comprises the valuable metal floss hole that is located at the bottom.In the process that melts in melting furnace, 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.
Described melting furnace further comprises the insulation nozzle that is inserted into from the side of melting furnace in the burner hearth.By 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.
Described 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.
Described 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.
Send into oxygen-containing gas by overfiren air port and tertiary air orifice in upper furnace, the reaction of carbon monoxide that produces in oxygen and the fusion process generates harmless carbon dioxide.
The described equipment that reclaims valuable metal from residues containing zinc 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.
By waste heat boiler is set, can effective recycling melting furnace in and the heat of the flue gas that produces in the flue gas stove, thereby saved cost, reduced the waste of the energy.And the steam of the oxide of the part valuable metal that produces in the melting furnace also steam of the oxide of the valuable metal in fuming furnace has obtained recovery.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic diagram that reclaims the equipment of valuable metal according to the utility model embodiment from residues containing zinc;
Fig. 2 is the schematic diagram of the melting furnace of the equipment that reclaims valuable metal from residues containing zinc shown in Figure 1;
Fig. 3 is the schematic diagram of the fuming furnace of the equipment that reclaims valuable metal from residues containing zinc shown in Figure 1.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described 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.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, close the orientation of indications such as term " top ", " below ", " side ", " top ", " end " or position is based on orientation shown in the drawings or position relation, it only is the utility model rather than require the utility model therefore can not be interpreted as for convenience of description with specific orientation structure and operation to restriction of the present utility model.
Below with reference to the equipment that from residues containing zinc reclaims valuable metal of accompanying drawing detailed description according to the utility model embodiment.
As Figure 1-3, the equipment that reclaims valuable metal from residues containing zinc according to the utility model embodiment comprises melting furnace 1, fuming furnace 2, top-blown spray gun 3, side-blown spray gun 4 and fuming furnace spray gun 8.
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 to spray into oxygen-containing gas and coal dust in burner hearth that top-blown spray gun 3 inserts burner hearth from the top (top Fig. 1 and 2) of melting furnace 1, and described oxygen-containing gas can be oxygen-enriched air, also can be purer oxygen.Side-blown spray gun 4 is inserted in the burner hearth to spray into oxygen-containing gas and coal dust in the molten bath 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 utility model, 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 the temperature in the maintenance melting furnace 1 when the residues containing zinc of blow-on and discharging fusion in side from melting furnace 1.
As illustrated in fig. 1 and 2, in an example of the present utility model, be provided with overfiren air port 5 and tertiary air orifice 6, be respectively applied in upper furnace A and send into oxygen-containing gas, for example air in the side of melting furnace 1 and above being positioned at molten bath B.The a part of coal dust oxidation that sprays in the melting furnace 1 has generated carbon monoxide, by overfiren air port 5 being set and tertiary air orifice 6 is sent into oxygen in upper furnace A, 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 by 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, this only is for the convenience of describing, and according to concrete needs, overfiren air port can only be set, and the air port also can be set four times.
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 by path 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 by chute.
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 utility model, the equipment that reclaims valuable metal from residues containing zinc according to the utility model embodiment 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 recycling flue gas.
Below the simple operation of describing according to the equipment of valuable metal that from residues containing zinc, reclaims of the utility model embodiment.
Add beans and residues containing zinc by charge door 11 in melting furnace 1, 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 by top-blown spray gun 3 and side-blown spray gun 4.Two strands of high velocity airs that top-blown spray gun 3 and side-blown spray gun 4 spray into make the molten bath vigorous agitation, have strengthened the heat and mass transfer process of inside, 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, finishes the slag process.In addition, the coal dust of small 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 by 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 by 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 enter 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 small 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 by air inlet 24 (for example air) and enter waste heat boiler 9 recovery waste heats from exhanst gas outlet 22 discharges, enter the back segment dust collecting system then, be recovered utilization with the form of metal oxide flue dust.Remaining wastes contain 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, discharge by 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 utility model, because fusing and redox are separately carried out, therefore can work continuously, the fusing of slag and fuming reciprocal influence are little, improved operating rate thus, and the valuable metal content in the waste is few, has improved the rate of recovery.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (6)
1. an equipment that reclaims valuable metal from residues containing zinc is characterized in that, comprising:
Melting furnace, the inner burner hearth that limits of described melting furnace, described burner hearth is divided into the upper and lower, and the burner hearth of its middle and lower part is the molten bath, and described melting furnace has charge door, outlet flue and liquid slag outlet;
Top-blown spray gun, described top-blown spray gun inserts in the burner hearth to spray into oxygen-containing gas and coal dust in burner hearth from the top of melting furnace;
Side-blown spray gun, described side-blown spray gun is inserted in the burner hearth to spray into oxygen-containing gas and coal dust in the molten bath from the side of melting furnace;
Fuming furnace, described 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, described fuming furnace spray gun are inserted in the fuming furnace to spray into oxygen-containing gas and coal dust in fuming furnace.
2. the equipment that reclaims valuable metal from residues containing zinc according to claim 1 is characterized in that described melting furnace further comprises the valuable metal floss hole that is located at the bottom.
3. the equipment that reclaims valuable metal from residues containing zinc according to claim 1 is characterized in that, described 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 reclaims valuable metal from residues containing zinc according to claim 1 is characterized in that, described 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 reclaims valuable metal from residues containing zinc according to claim 4 is characterized in that, described 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 reclaims valuable metal from residues containing zinc 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201701696U CN201440037U (en) | 2009-08-24 | 2009-08-24 | Device for recovering valuable metal from zincy slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201701696U CN201440037U (en) | 2009-08-24 | 2009-08-24 | Device for recovering valuable metal from zincy slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201440037U true CN201440037U (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201701696U Expired - Lifetime CN201440037U (en) | 2009-08-24 | 2009-08-24 | Device for recovering valuable metal from zincy slag |
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| Country | Link |
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| CN (1) | CN201440037U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839645B (en) * | 2009-08-24 | 2012-12-26 | 中国恩菲工程技术有限公司 | Equipment for recovering valuable metals from zinc-contained slag |
| CN102899497A (en) * | 2012-08-07 | 2013-01-30 | 中国恩菲工程技术有限公司 | Zinc leaching slag treatment device and treatment process |
| CN109439915A (en) * | 2018-09-17 | 2019-03-08 | 华北理工大学 | A kind of method and its application using blast furnace high-temperature slag sensible heat online processing zinc-containing dust |
-
2009
- 2009-08-24 CN CN2009201701696U patent/CN201440037U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839645B (en) * | 2009-08-24 | 2012-12-26 | 中国恩菲工程技术有限公司 | Equipment for recovering valuable metals from zinc-contained slag |
| CN102899497A (en) * | 2012-08-07 | 2013-01-30 | 中国恩菲工程技术有限公司 | Zinc leaching slag treatment device and treatment process |
| CN109439915A (en) * | 2018-09-17 | 2019-03-08 | 华北理工大学 | A kind of method and its application using blast furnace high-temperature slag sensible heat online processing zinc-containing dust |
| CN109439915B (en) * | 2018-09-17 | 2020-04-17 | 华北理工大学 | Method for online treatment of zinc-containing dust by utilizing sensible heat of blast furnace high-temperature slag and application of method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100421 Effective date of abandoning: 20090824 |
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| RGAV | Abandon patent right to avoid regrant |