CN101839631B - Electrothermal copper-smelting slag depleted furnace - Google Patents
Electrothermal copper-smelting slag depleted furnace Download PDFInfo
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- CN101839631B CN101839631B CN2009100888801A CN200910088880A CN101839631B CN 101839631 B CN101839631 B CN 101839631B CN 2009100888801 A CN2009100888801 A CN 2009100888801A CN 200910088880 A CN200910088880 A CN 200910088880A CN 101839631 B CN101839631 B CN 101839631B
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Abstract
The invention discloses an electrothermal copper-smelting slag depleted furnace, which comprises a furnace body, supports, an oxygen lance and electrodes; the furnace body comprises a furnace shell defining a furnace chamber and a refractory material layer arranged on the inner wall of the furnace shell, the furnace body is provided with a feed inlet for feeding copper-smelting slag and vulcanizing agent into the furnace chamber, a siphon inlet for discharging copper matte, a waste slag-discharging outlet, electrode plugholes, a smoke outlet and an oxygen lance plughole, wherein the oxygen lance plughole is formed at the bottom of the furnace shell; the furnace body is supported by the supports; the oxygen lance is plugged into the oxygen lance plughole; and the electrodes are plugged into the furnace body via the electrode plugholes. When the electrothermal copper-smelting slag depleted furnace is used for bottom-blowing electrothermal copper-smelting slag depletion, the copper content in waste slag can be reduced, and electricity consumption can be decreased.
Description
Technical field
The present invention relates to a kind of electrothermal copper-smelting slag depleted furnace.
Background technology
At present, adopt the large-scale copper smelting plant of advanced melting technique, for reducing the blowing load; All adopt higher copper matte regulus grade; The copper matte regulus grade that is output is higher, wherein than the copper content in the high-grade copper matte regulus in 50～70% scopes, copper smelting slag cupric fluctuates in 2%～8% scope.
In order to reclaim the copper in the copper smelting slag, the copper smelting slag adopts electric dilution traditionally, the copper smelting slag is joined in the electric furnace, thereby the copper in the copper smelting slag is settled down the temperature raising of copper smelting slag with the copper matte regulus form through heated by electrodes, separates with waste.
The body of heater of tradition slag cleaning furnace has charge door, electrode jack, slag tap, exhaust opening and copper matte regulus outlet.The copper smelting slag of fusion joins in the electric stove hearth through charge door, improves copper smelting slag temperature through heated by electrodes, separates copper matte regulus and waste thereby reduce its viscosity.
But; When using traditional slag cleaning furnace that the copper smelting slag is carried out dilution; Receive the restriction of slag cupric and copper matte regulus cupric distribution coefficient (being roughly 1: 100); Generally fluctuate in the scope 0.6%～1% through the copper content of the heavy sorting of electric furnace in the waste after the dilution, so the copper content in the waste is still higher, causes the wasting of resources.
In addition, when adopting high iron slag type, owing to contain lot of F e in the copper smelting slag
3O
4, cause the viscosity of copper smelting slag big, fusing point is high, thereby the separation difficulty of copper matte regulus and waste generally adopts slow cooling, slag ore-dressing technique.The slag ore dressing needs a large amount of slow cold slag bins, and slag needs fragmentation, abrading-ball, flotation, and technological process is long, floor space is big.
Summary of the invention
The present invention is intended to solve at least one of above-mentioned technical problem that exists in the prior art.For this reason, one object of the present invention is to propose a kind of copper smelting slag dilution stove, utilizes this electrothermal copper-smelting slag depleted furnace that the copper smelting slag is carried out dilution, can reduce the copper content in the waste.
To achieve these goals; The present invention proposes a kind of electrothermal copper-smelting slag depleted furnace; Comprise: body of heater; Said body of heater comprises the furnace shell that limits burner hearth and is located at the refractory masses on the furnace shell inwall, and said body of heater has the charge door that is used in burner hearth, adding copper smelting slag and vulcanizing agent, siphon port, waste floss hole, electrode jack, exhaust opening and the oxygen lance jack that discharges copper matte regulus, and wherein said oxygen lance jack is formed on the bottom of furnace shell; The bearing of supporting body of heater; The oxygen lance spraying rifle, said oxygen lance spraying rifle is inserted in the oxygen lance jack; And electrode, said electrode is inserted in the body of heater through electrode jack.
According to electrothermal copper-smelting slag depleted furnace of the present invention,, be used for for example in burner hearth, spraying into oxygen through the oxygen lance that inserts wherein owing to be provided with the oxygen lance jack in the bottom of body of heater.Simultaneously, owing in burner hearth, added vulcanizing agent from charge door, a part of sulphur in the vulcanizing agent and oxygen reaction generate SO
2, CuO in a part of sulphur and slag reaction generates CuS, makes the copper that exists with the CuO form in the smelting slag obtain reclaiming the Fe in some sulphur and the slag with the form that the CuS kenel gets into copper matte regulus thus
3O
4Reaction generates FeS, gets into copper matte regulus, has reduced the grade of copper matte regulus.
For example, said vulcanizing agent can also can be used element S, FeS for pyrite or the high low taste copper concentrate of sulfur-bearing
2Heating and decomposition is decomposed and to be obtained FeS and S, S respectively with oxygen, slag in CuO and the Fe in the slag
3O
4Reaction, in the case, the SO that reaction generates
2, CuS, Cu
2S, FeS get into copper matte regulus, have reduced the grade of copper matte regulus thus.
Based on 1: 100 cupric distribution ratio between slag and copper matte regulus, just can reduce the copper content in the waste through the grade that reduces copper matte regulus, reduced the copper amount that abandons with waste, the rate of recovery and the resource utilization of raising copper.
In addition, because a part of sulphur and Fe
3O
4Reaction has reduced the Fe in the slag
3O
4Content, thereby the viscosity and the fusing point of reduction slag help Cu and separate with waste with CuS sedimentation entering copper matte regulus from slag, improve sinking speed and efficient.Thereby the reduction power consumption reduces cost.
Owing to spray into oxygen at bottom of furnace body, therefore also can be called " copper smelting slag electric heating bottom blowing dilution stove " according to electrothermal copper-smelting slag depleted furnace of the present invention.
In addition, also have following additional technical feature according to electrothermal copper-smelting slag depleted furnace of the present invention:
Said body of heater also comprises the carbon monoxide entrance that is formed on bottom of furnace body.
Can in burner hearth, spray into carbon monoxide through the carbon monoxide entrance, the Fe in carbon monoxide and the copper smelting slag
3O
4Reaction generates carbon dioxide and FeO, has further reduced the Fe in the slag in the burner hearth
3O
4Content, further reduce the viscosity and the fusing point of slag, sedimentation from slag gets into copper matte regulus with separating with CuS to help Cu, improves dilution efficient.Reduce power consumption and cost.
In addition, carbon monoxide and CuO participate in reaction and generate carbon dioxide and Cu, increase its proportion, can increase the sedimentation separation speed of copper matte regulus, raise the efficiency.
And carbon monoxide also has agitaion, and the polymerization of particulate cupric material is grown up, and quickens sedimentation and separates with waste, raises the efficiency.
Said body of heater also has the nitrogen entrance.Alternatively, said nitrogen entrance and said carbon monoxide entrance are same entrance.Promptly spray into the mist of carbon monoxide and nitrogen, reduced the open amount on the body of heater, reduced cost through same entrance.
Can in burner hearth, spray into nitrogen through nitrogen inlet, in the process that rises in the slag of nitrogen in burner hearth, have certain agitaion, the polymerization of particulate cupric material is grown up, quicken sedimentation and separate with waste.Simultaneously, nitrogen increases CuO and contacts, collides with CuS in uphill process, produces cross reaction, generates Cu and SO
2, also help copper sedimentation separation from slag and get into copper matte regulus, reach the purpose of further reduction waste cupric, improve the rate of recovery of copper.
Be provided with fire-resistant air brick respectively at carbon monoxide entrance and nitrogen entrance place on the refractory masses in burner hearth.
Through fire-resistant air brick is set, can carbon monoxide and nitrogen be distributed in the slag, thereby improves the dilution effect.
Said charge door comprises first charge door and second charge door; The top that the end face that wherein said first charge door is used in burner hearth, adding the copper smelting slag of fusion and is located at furnace shell first end, second charge door are used in burner hearth, adding vulcanizing agent and are formed on furnace shell.
Can add copper smelting slag and vulcanizing agent respectively through two charge doors respectively.Be arranged on the end face of first end of body of heater through first charge door that will be used to add the copper smelting slag, can reduce the whole height of body of heater, and then reduce the height of factory building.
Said body of heater is a Horizontal Cylindrical Tank.Through being arranged to Horizontal Cylindrical Tank, rotating furnace body 180 is spent easily, thereby is convenient to change operations such as oxygen lance, maintenance.
Further comprise drive unit according to electrothermal copper-smelting slag depleted furnace of the present invention; Wherein be circumferentially with tooth bar and bracing ring in the outer surface upper edge of furnace shell, said bracing ring is supported on the said bearing rotationally and said drive unit links to each other with tooth bar rotates to drive body of heater.Through being set, bracing ring supports body of heater, then can rotating furnace through the lip-deep tooth bar of drive unit driving furnace shell, thus be convenient to change parts for example oxygen lance and maintenance operation.
First end of furnace shell has the radial dimension expansion section, and said charge door, oxygen lance jack and siphon port be located at the radial dimension expansion section of first end of furnace shell, and said exhaust opening and waste floss hole are located at second end of furnace shell.
Through charge door and oxygen lance jack are arranged on same end, can make oxygen fast with the material that adds in S contact and react raising dilution efficient.
Said bearing comprises: substrate; Supporting seat, said supporting seat respectively towards tilting furnace be installed in the both sides of substrate; The center support roller, said center support roller is installed on the said supporting seat; With two side supports rollers, said two side supports rollers are installed on the supporting seat respectively and lay respectively at the both sides, top of center support roller, and two side supports rollers contact with bracing ring with the center support roller respectively.
Through the bearing of said structure, can rotatably support body of heater easily.
Said body of heater is supported on the said bearing at axial direction with tilting, and body of heater first end at wherein said siphon port place is lower than second end of body of heater.
Through body of heater is set obliquely, and make body of heater one end that forms siphon port be lower than the other end of body of heater, make that waste content is few in the copper matte regulus of discharging, copper matte regulus is better with separating of waste.
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 of electrothermal copper-smelting slag depleted furnace according to an embodiment of the invention;
Fig. 2 is the cross-sectional schematic of the body of heater of electrothermal copper-smelting slag depleted furnace shown in Figure 1;
Fig. 3 is the body of heater schematic appearance of electrothermal copper-smelting slag depleted furnace shown in Figure 1;
Fig. 4 is the cross-sectional schematic of the body of heater of electrothermal copper-smelting slag depleted furnace according to another embodiment of the present invention;
Fig. 5 is that sketch map is looked on the right side of electrothermal copper-smelting slag depleted furnace shown in Figure 1;
Fig. 6 is that sketch map is looked on the left side of electrothermal copper-smelting slag depleted furnace shown in Figure 1;
Fig. 7 is the schematic top plan view of the drive unit and a bearing of electrothermal copper-smelting slag depleted furnace shown in Figure 1.
The specific embodiment
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.
Following electrothermal copper-smelting slag depleted according to an embodiment of the invention with reference to figure 1-3 and 5-7 description.
As shown in Figure 1, electrothermal copper-smelting slag depleted furnace comprises body of heater 1, bearing 4, oxygen lance spraying rifle 6 and electrode 7 according to an embodiment of the invention.
In the example depicted in fig. 1, electrothermal copper-smelting slag depleted furnace body 1 is a Horizontal Cylindrical Tank, but the present invention is not limited to this.Body of heater 1 comprises the furnace shell 1a that limits a burner hearth and is located at the refractory masses 1b on the furnace shell 1a inwall.Body of heater 1 is formed with charge door 11, siphon port 12, waste floss hole 13, electrode jack 17, exhaust opening 14 and oxygen lance jack 16, and wherein oxygen lance jack 16 is formed on the bottom of furnace shell 1a.
Body of heater 1 is supported by bearing 4, and more specifically, body of heater 1 is by support along isolated two bearings 4 of the axial direction of body of heater 1 obliquely, and first end (left end among Fig. 1) that promptly is formed with siphon port 12 is lower than second end (right-hand member among Fig. 1) of body of heater.For example, the angle of the axis of body of heater 1 and horizontal direction is in the scope of 0.5-5 degree.Thus, sink to the left end that following copper matte regulus accumulates in body of heater 1, discharge from siphon port 12 more easily, reduced the waste content in the copper matte regulus.
As shown in Figure 2, in an example of the present invention, charge door 11 comprises first charge door 111 and second charge door 112.First charge door 111 is located on the end face of first end of furnace shell 1a, is used in burner hearth, adding the copper smelting slag.Second charge door 112 is formed on the top of furnace shell 1a, is used in burner hearth, adding vulcanizing agent.
The phenomenon of smoldering that produces when joining in the burner hearth through a charge door through charge door 11 being formed first charge door 111 and second charge door 112 that is respectively applied for adding copper smelting slag and vulcanizing agent, can reducing copper smelting slag and vulcanizing agent.In addition, be arranged on the end face of first end of furnace shell 1a, can reduce the height of furnace shell 1a, thereby can reduce the height of factory building, reduce cost thus through first charge door 111 that will be used to add the copper smelting slag.
Siphon port 12 is located at the bottom of furnace shell 1a first end and the inner bottom part of contiguous burner hearth, is used to discharge the copper matte regulus that separates with waste.Waste floss hole 13 is located on the end face of second end (right-hand member among Fig. 2) of furnace shell 1a, is used to discharge the waste that separates with copper matte regulus.Certainly and since waste be positioned at copper matte regulus above, so waste floss hole 13 should be higher than siphon port 12.
Electrode jack 17 is located at the top of furnace shell 1a and is positioned at furnace shell 1a cardinal principle middle part longitudinally, and electrode 7 inserts in the bodies of heater 1 through electrode jack 17, with the temperature of vulcanizing agent in the fusing adding burner hearth and raising copper smelting slag.Exhaust opening 14 is located at second end of furnace shell 1a and is positioned at the top of furnace shell 1a, is used to discharge the flue gas in the burner hearth.Oxygen lance jack 16 is positioned at first end of furnace shell 1a and is formed on the bottom of furnace shell 1a, and oxygen lance 6 inserts in the oxygen lance jack 16, in burner hearth, to spray into oxygen.
As shown in Figure 2, in an example of the present invention, body of heater 1 also further comprises the carbon monoxide entrance 15a that is formed on furnace shell 1a bottom, and carbon monoxide entrance 15a is positioned at the right side of oxygen lance jack 16, is used in burner hearth, spraying into carbon monoxide.In addition, body of heater 1 also comprises the nitrogen entrance 15b that is formed on furnace shell 1a bottom, is used in burner hearth, spraying into nitrogen.
In an example of the present invention, nitrogen entrance 15b and carbon monoxide entrance 15a can be same entrance, and in other words, the mist of nitrogen and carbon monoxide is injected in the burner hearth from same entrance together.That is to say that carbon monoxide entrance 15a is also as the nitrogen entrance that in burner hearth, sprays into nitrogen, nitrogen entrance 15b is also as the carbon monoxide entrance that in burner hearth, sprays into carbon monoxide.Through entrance 15 is used as nitrogen entrance and carbon monoxide entrance simultaneously, can reduce the number of openings on the body of heater 1.
In an example of the present invention; As shown in Figure 2; Be provided with fire-resistant air brick 8 respectively at carbon monoxide entrance 15a and nitrogen entrance 15b place on the refractory masses 1b in burner hearth; Through fire-resistant air brick 8 is set, nitrogen and CO gas are injected in the slag of the fusion in the burner hearth more equably.Can be provided with at carbon monoxide entrance 15a and nitrogen entrance 15b place and to spray into pipe or nozzle.
As shown in figs. 1 and 3; Thereby, be circumferentially with tooth bar 3 in the outer surface upper edge of furnace shell 1a and further comprise drive unit 5 with bracing ring 2 and said electrothermal copper-smelting slag depleted furnace in order to make body of heater 1 be convenient to change operations such as oxygen lance and maintenance around its axis rotation.Be respectively arranged with a bracing ring 2 at the two ends of furnace shell 1a, bracing ring 2 rotatably is supported on the bearing 4, drives rotating furnace body 1 thereby tooth bar 3 links to each other with drive unit 5 by drive unit 5.
Shown in Fig. 1 and 5-7, each bearing 4 comprises substrate 41, supporting seat 42, center support roller 45 and two side supports rollers 43,44.Two are supported 42 both sides that are mounted obliquely within substrate 41 respectively towards body of heater 1.Center support roller 45 is installed in supporting seat 42.Two side supports rollers 43,44 are installed on the supporting seat 42 respectively and lay respectively at the both sides, top of center support roller 45, and two side supports rollers 43,44 contact with bracing ring 2 with center support roller 45 respectively.
Drive unit 5 can be for any suitable form, and for example as shown in Figure 7, drive unit 5 comprises motor 52, decelerator 52 and gear 53, wheel and rack 3 engagements, thus drive body of heater 1 rotation through driving tooth bar 3.
With reference to figure 4 body of heater 1 of electrothermal copper-smelting slag depleted furnace is according to another embodiment of the present invention described below.First end of the furnace shell 1a of electrothermal copper-smelting slag depleted furnace body 1 shown in Figure 4 has the radial dimension expansion section, and the radial dimension expansion section can be set along the axial length of furnace shell 1a as required.Thus, the radial dimension of the burner hearth of first end also enlarges.
Because first end at furnace shell 1a is provided with the radial dimension expansion section; Therefore the copper matte regulus that separates with waste concentrates on the inner bottom part of the burner hearth at place, expansion section easily, discharge through siphon port 12, and waste is discharged through waste floss hole 13; Because siphon port 12 is positioned at the radial dimension bellend; Increased the heavy clear time, so the influence of the discharging of the copper matte regulus gas that is not easy to be sprayed into, the dregginess in the copper matte regulus reduces.
Electrothermal copper-smelting slag depleted furnace body 1 shown in Figure 4 is identical with other structures of electrothermal copper-smelting slag depleted furnace body 1 shown in Figure 2, is not described in detail here.
Operation according to the electrothermal copper-smelting slag depleted furnace of the embodiment of the invention is described below.
In burner hearth, add an amount of vulcanizing agent and the copper smelting slag of fusion through first charge door 111 and second charge door 112 respectively, said vulcanizing agent for example is a pyrite.
Electrode 7 energisings are to improve the melt temperature in the burner hearth.Simultaneously, in burner hearth, spray into oxygen through oxygen lance 6 from the bottom of body of heater 1, and in burner hearth, spray into the mist of carbon monoxide and nitrogen from the bottom of body of heater 1 through carbon monoxide entrance 15a and nitrogen entrance 15b.Certainly, also can in burner hearth, spray into carbon monoxide from the bottom of body of heater 1, and in burner hearth, spray into nitrogen from the bottom of body of heater 1 through nitrogen entrance 15b through carbon monoxide entrance 15a.
A part of sulphur in the vulcanizing agent and oxygen reaction generate SO
2, the CuO reaction in a part of sulphur and the slag generates SO
2And CuS, make the copper that exists with the CuO form in the smelting slag obtain reclaiming the Fe in some sulphur and the slag thus with the form of copper matte regulus
3O
4Reaction generates SO
2And FeS, S and Fe
3O
4The FeS that reaction generates gets into copper matte regulus, has reduced the grade of copper matte regulus.
Based on 1: 100 cupric distribution ratio between slag and copper matte regulus; Utilize body of heater of the present invention to carry out the copper matte regulus grade that dilution obtains and reduce, the cupric of copper matte regulus＜35% for example, thus reduce the copper content in the waste; For example the copper content in the waste has reduced the copper amount that abandons with waste thus less than 0.4%.
In addition, because a part of sulphur and Fe
3O
4Reaction has reduced the Fe in the slag
3O
4Content, thereby the viscosity and the fusing point of reduction slag, sedimentation from slag gets into copper matte regulus with separating with CuS to help Cu, has improved the rate of recovery of copper.
And, the Fe in carbon monoxide and the copper smelting slag
3O
4Reaction generates carbon dioxide and FeO, has further reduced the Fe in the slag in the burner hearth
3O
4Content, further reduce the viscosity and the fusing point of slag, sedimentation from slag gets into copper matte regulus with separating with CuS to help Cu, improves copper recovery.
In addition, carbon monoxide and CuO participate in reaction and generate carbon dioxide and Cu, increase its proportion, can increase the sedimentation separation speed of copper matte regulus, have improved efficient.
In the process that in the slag of nitrogen in burner hearth, rises, have certain agitaion, the polymerization of particulate cupric material is grown up, quicken sedimentation and separate with waste.Simultaneously, nitrogen increases CuO and contacts, collides with CuS in uphill process, produces cross reaction, generates Cu and SO2, also helps copper sedimentation separation from slag and gets into copper matte regulus, reaches the purpose of further reduction waste cupric, improves the rate of recovery of copper.And the carbon monoxide that sprays into also has certain agitaion, thereby can play the effect identical with the nitrogen that sprays into.
Thus; Copper in the copper smelting slag is deposited to burner hearth bottom with the form of copper matte regulus and separates with waste, and because the grade of copper matte regulus is low, thereby can reduce the copper content of waste; Copper matte regulus is discharged burner hearth through the siphon port on the body of heater 1 12, and the waste above the copper matte regulus is discharged burner hearth through waste floss hole 13.
When after using after a while, needing to change oxygen lance or maintenance, can blowing out, and through drive unit 5 rotating furnace body 1 in the scope of 90 degree, thereby be convenient to change oxygen lance with or maintenance operation.
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 (9)
1. an electrothermal copper-smelting slag depleted furnace is characterized in that, comprising:
Body of heater; Said body of heater comprises the furnace shell that limits burner hearth and is located at the refractory masses on the furnace shell inwall; Said body of heater has charge door, the siphon port, waste floss hole, electrode jack, the exhaust opening that discharge copper matte regulus that is used in burner hearth, adding copper smelting slag and vulcanizing agent, the oxygen lance jack that is formed on the bottom of furnace shell, is formed on the carbon monoxide entrance of furnace shell bottom;
The bearing of supporting body of heater;
The oxygen lance spraying rifle, said oxygen lance spraying rifle is inserted in the oxygen lance jack; With
Electrode, said electrode is inserted in the body of heater through electrode jack;
2. electrothermal copper-smelting slag depleted furnace according to claim 1 is characterized in that, said body of heater also has the nitrogen entrance that is formed on the furnace shell bottom.
3. electrothermal copper-smelting slag depleted furnace according to claim 2 is characterized in that, in burner hearth, is provided with fire-resistant air brick respectively at carbon monoxide entrance and nitrogen entrance place.
4. electrothermal copper-smelting slag depleted furnace according to claim 1; It is characterized in that; Said charge door comprises first charge door and second charge door; The top that the end face that wherein said first charge door is used in burner hearth, adding the copper smelting slag and is located at furnace shell first end, second charge door are used in burner hearth, adding vulcanizing agent and are formed on furnace shell.
5. according to each described electrothermal copper-smelting slag depleted furnace among the claim 1-4, it is characterized in that said body of heater is a Horizontal Cylindrical Tank.
6. electrothermal copper-smelting slag depleted furnace according to claim 5; It is characterized in that; Further comprise drive unit; Wherein be circumferentially with tooth bar and bracing ring in the outer surface upper edge of furnace shell, said bracing ring is supported on the said bearing rotationally and said drive unit links to each other with tooth bar rotates to drive body of heater.
7. electrothermal copper-smelting slag depleted furnace according to claim 5; It is characterized in that; First end of furnace shell has the radial dimension expansion section; And said charge door, oxygen lance jack and siphon port are located at the radial dimension expansion section of first end of furnace shell, and said exhaust opening and waste floss hole are located at second end of furnace shell.
8. electrothermal copper-smelting slag depleted furnace according to claim 6 is characterized in that, said bearing comprises:
Substrate;
Supporting seat, said supporting seat respectively towards tilting furnace be installed in the both sides of substrate;
The center support roller, said center support roller is installed on the said supporting seat; With
Two side supports rollers, said two side supports rollers are installed on the supporting seat respectively and lay respectively at the both sides, top of center support roller, and wherein two side supports rollers contact with bracing ring with the center support roller respectively.
9. electrothermal copper-smelting slag depleted furnace according to claim 5 is characterized in that, said body of heater is supported on the said bearing at axial direction with tilting, and body of heater first end at wherein said siphon port place is lower than second end of body of heater.
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| CN2009100888801A CN101839631B (en) | 2009-07-21 | 2009-07-21 | Electrothermal copper-smelting slag depleted furnace |
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| US3542352A (en) * | 1965-01-04 | 1970-11-24 | Noranda Mines Ltd | Apparatus for the continuous smelting and converting of copper concentrates to metallic copper |
| CN201080490Y (en) * | 2007-01-04 | 2008-07-02 | 河南豫光金铅股份有限公司 | Bottom blowing molten pool reducing furnace for liquid high lead dross reduction |
-
2009
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3385585A (en) * | 1964-02-28 | 1968-05-28 | Nippon Kokan Kk | Rotary furnace for continuously refining molten metal |
| US3542352A (en) * | 1965-01-04 | 1970-11-24 | Noranda Mines Ltd | Apparatus for the continuous smelting and converting of copper concentrates to metallic copper |
| CN201080490Y (en) * | 2007-01-04 | 2008-07-02 | 河南豫光金铅股份有限公司 | Bottom blowing molten pool reducing furnace for liquid high lead dross reduction |
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| Title |
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| 张文海.电炉贫化法处理闪速炉渣.《有色金属（冶炼部分）》.1985,(第2期),第37-42页. * |
| 张林楠等.铜渣贫化的选择性还原过程.《有色金属》.2005,第57卷(第3期),第44-47页. * |
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|---|---|
| CN101839631A (en) | 2010-09-22 |
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