CN104726722A - Zinc smelting electric furnace - Google Patents
Zinc smelting electric furnace Download PDFInfo
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- CN104726722A CN104726722A CN201510126853.4A CN201510126853A CN104726722A CN 104726722 A CN104726722 A CN 104726722A CN 201510126853 A CN201510126853 A CN 201510126853A CN 104726722 A CN104726722 A CN 104726722A
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- heater
- electric furnace
- zinc
- transformer
- graphite electrodes
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Abstract
The invention provides a zinc smelting electric furnace. The zinc smelting electric furnace comprises a furnace body and transformers, wherein the furnace body is horizontal type cylindrical with two closed ends, a smoke outlet is formed in the upper part of the left end of the furnace body, a tapping hole is formed in the lower part of the right end of the furnace body, a slag hole is formed in the lower-middle part of the right end of the furnace body, multiple graphite electrodes used for heating the inner cavity of the furnace body are arranged at the upper end of the furnace body, a charging hole penetrating through the furnace body is formed between every two adjacent graphite electrodes, binding posts are arranged at the upper part of the transformer, two connecting lines are arranged on each binding post and are used for connecting spaced graphite electrodes, the transformers are three-phase alternating-current transformers, rated capacity of each transformer is 16000KVA, quantity of the transformers is two, quantity of the graphite electrodes is 12, and the diameter of each graphite electrode is 550-650mm. The zinc smelting electric furnace has the advantages that the problem of top punching of the zinc smelting electric furnace is solved, circuit capacity is high, yield is high (200t/d), energy consumption is low (3200KWh/t.zn), thermal energy distribution is uniform, utilization is reasonable, a construction period is short, operation is simple, control is easy, and no zinc hydrometallurgy acid mud pollution is produced.
Description
Technical field
The present invention relates to metallurgical equipment, espespecially a kind of zinc abstraction electric furnace.
Background technology
The smelting process of zinc is mainly divided into pyrometallurgy of zinc and zinc hydrometallurgy, and zinc hydrometallurgy is the mode leached is master, after clean liquid process, smart zinc ore is become liquid state from solid-state, then obtains zinc product through electrolysis; Pyrometallurgy of zinc is that plumbous reduction reaction after zinc ore heating is formed zinc fume, then becomes zinc product through condensation.
Electric furnace is the nucleus equipment of pyrometallurgy of zinc, because zinc in zinc ore exists in the form of an oxide, in electric furnace, react under the hot environment that zinc ore and reductibility material are formed in the heated by electrodes of electric furnace, produce zinc fume, zinc fume obtains zinc product after condensation, rectifying.
The electric furnace of prior art is generally vertical electric furnace, electric furnace is right cylinder or rectangle, upper cover installs three electrodes, material in the arc resistance process furnace utilizing electrode to produce in electric furnace, the defect of vertical electric furnace is mainly: small scale, yield poorly, energy consumption is high, potential safety hazard is larger, be easy to the accident of rushing to summit, because this safety problem is effectively solved always, so the large-scale production slower development of electric furnace zinc smelting, existing many enterprises still rest on using of 3600KVA electric furnace and run, want to improve throughput, then need multiple stage electric furnace, but so not only energy consumption is larger, equipment cost is also higher, be unfavorable for that industrial scale expands, also increase investment intensity simultaneously.
Summary of the invention
Object of the present invention is exactly for the deficiencies in the prior art, provides the zinc abstraction electric furnace of a kind of high-level efficiency, low cost, mass-producing.
For achieving the above object, the technical solution adopted in the present invention is: a kind of zinc abstraction electric furnace, comprise body of heater, transformer, body of heater is the horizontal cylindrical of closed at both ends, body of heater is provided with bracing or strutting arrangement, body of heater left upper part is provided with exhanst gas outlet, body of heater right-hand member bottom is provided with iron notch, body of heater right-hand member middle and lower part is provided with slag-drip opening, multiple Graphite Electrodes for heating furnace body inner chamber is installed in body of heater upper end, the charging opening running through body of heater is provided with between two adjoining graphite electrodes, transformer top is provided with terminal stud, every root terminal stud is provided with two wires, two wires connect the Graphite Electrodes at interval, transformer is three-phase ac transformer, the rated capacity of transformer is 16000KVA, number transformer is two, Graphite Electrodes quantity is 12 to follow, Graphite Electrodes diameter is 550 ~ 650 millimeters.
As a further improvement on the present invention, described body of heater shell is steel plate, and furnace interior lower floor is refractory brick, and furnace interior upper strata is integrated the refractory materials of building.
As a further improvement on the present invention, described body of heater outer upper has been horizontally disposed with cold water pipe, and cold water pipe is provided with spray orifice, and body of heater outer lower portion is provided with tank.
As a further improvement on the present invention, annular steel ring is provided with vertically outside described body of heater.
As a further improvement on the present invention, described exhanst gas outlet connects lead-splash condenser, lead-splash condenser upper angled is provided with two drive-motor, every platform drive-motor lower central position is provided with graphite rotator, shell and tube heat exchanger is in series with, shell and tube heat exchanger series connection sack cleaner on the left of lead-splash condenser.
Principle of work of the present invention:
The invention belongs to zinc abstraction technology, its technique is for insert in liquid molten body (i.e. slag) by electrode, rely on the dual function of micro-electric arc and the molten mass resistance that electrode and slag interface are formed, make electric energy conversion be heat energy, zinc ore fusing is produced zinc oxide gas, with coke generation reduction reaction, produce zinc fume, through lead-splash condenser cooling, form plumbous zinc mixed solution, obtain pure metal zinc through separation, rectifying, plumbous liquid is back to condenser and recycles.
Technological core of the present invention: separate unit electric furnace, two three-phase ac transformers (2*16000KVA), 12 electrodes (Graphite Electrodes), control secondary side current to operate, circular horizontal electric furnace, plumbous rain cooling, shell and tube heat exchange cooler is connected with bagroom and is used dedusting, its feature: every platform three-phase ac transformer controls six electrodes, one cross streams electric control two electrode, electric furnace skin is steel construction, outermost layer is water-cooled, the inner lower floor of electric furnace is refractory brick, upper strata is the one refractory materials of building, (solve the problem of rushing to summit of electric zinc furnace) safely, circuit capacity is large, output high (200t/d), energy consumption is low by (3200, KWh/t.zn), heat energy distribution is even, utilize rationally, reduced investment (being 1/5th of zinc hydrometallurgy with industrial scale), construction period is short, simple to operate, be easy to control, without the sour sludge-polluted of zinc hydrometallurgy.
In order to reduce reoxidizing of zinc in condensation process; require that zinc vapor condensing becomes liquid zinc institute elapsed time better shorter; and condensed liquid zinc preferably dissolves each other with certain metal; to reduce the activity of zinc; reduce the oxidation of liquid zinc; splash condenser cannot overcome the oxidation of zinc, adopts lead-splash condenser then can meet the requirement of large-scale production, and has the following advantages:
1, under service temperature (550 degrees Celsius), plumbous vapor pressure is low, and volatilization seldom;
2, plumbous fusing point low (327 degrees Celsius), and with the rising of temperature, the solubleness of zinc is increased, in fact, at condenser each section of plumbous liquid all not by zincification, the temperature of condenser coldest leg about exceeds 20-30 degree Celsius than temperature of saturation, most hot arc temperature exceeds 100 degrees centigrade than temperature of saturation, and therefore, the assimilation effect of plumbous rain to zinc is fine;
3, plumbous density large (just can obtain larger thermal capacity with the lead of small volume) and good heat conductivity, the surface-area of plumbous rain is large, and the movement velocity of spraying the relative furnace gas that comes is fast, and these factors make plumbous rain gear have the ability making furnace gas " quenching ".
The present invention compared with prior art has following beneficial effect:
1, the present invention is by being arranged at charging opening between every two electrodes, is conducive to material being uniformly distributed in electric furnace, avoids the material that collapses;
2, two transformers of the present invention can use simultaneously, also can isolated operation; Whole electric furnace steel plate makes shell, forms unified entirety, and by water-cooled, solves because in stove, instantaneous pressure is excessive, cause the accident of rushing to summit;
3, after furnace gas enters condenser system, adopt lead-splash condenser cooling, efficiency is high, easy to operate;
4, efficiency of the present invention is high, can smelt the low-grade zinc of 30% ~ 27%.
Accompanying drawing explanation
Fig. 1 is a kind of zinc abstraction electric cooker structure schematic diagram;
1-sack cleaner in figure; 2-drive-motor; 3-terminal stud; 4-transformer; 5-wire; 6-Graphite Electrodes; 7-cold water pipe; 8-body of heater; 9-slag-drip opening; 10-iron notch; 11-annular steel ring; 12-tank; 13-refractory brick; 14-charging opening; 15-steel plate; 16-exhanst gas outlet; 17-graphite rotator; 18-lead-splash condenser; 19-shell and tube heat exchanger.
Embodiment
embodiment 1
A kind of zinc abstraction electric furnace as shown in Figure 1, comprise body of heater 8, transformer 4, the horizontal cylindrical of body of heater 8 in closed at both ends, body of heater 8 is provided with bracing or strutting arrangement, body of heater 8 left upper part is provided with exhanst gas outlet 16, body of heater 8 right-hand member bottom is provided with iron notch 10, body of heater 8 right-hand member middle and lower part is provided with slag-drip opening 9, multiple Graphite Electrodes 6 for heating furnace body 8 inner chamber is installed in body of heater 8 upper end, the charging opening 14 running through body of heater 8 is provided with between two adjoining graphite electrodes 6, transformer 4 top is provided with terminal stud 3, every root terminal stud 3 is provided with two wires 5, two wires 8 connect the Graphite Electrodes 6 at interval, transformer 4 is three-phase ac transformer, the rated capacity of transformer 4 is 16000KVA, transformer 4 quantity is two, Graphite Electrodes 6 quantity is 12, Graphite Electrodes 6 diameter is 550 ~ 650 millimeters, two transformers of the present invention can use simultaneously, also can isolated operation, circuit capacity is large, output high (200t/d), energy consumption is low by (3200, KWh/t.zn), heat energy distribution is even, utilize rationally, reduced investment (being 1/5th of zinc hydrometallurgy with industrial scale), construction period is short, simple to operate, be easy to control, without the sour sludge-polluted of zinc hydrometallurgy.
As a further improvement on the present invention, described body of heater 8 shell is steel plate 15, the inner lower floor of body of heater 8 is refractory brick 13, the inner upper strata of body of heater 8 is integrated the refractory materials of building, whole electric furnace steel plate makes shell, form unified entirety, solve because in stove, instantaneous pressure is excessive, cause the accident of rushing to summit.
As a further improvement on the present invention, described body of heater 8 outer upper has been horizontally disposed with cold water pipe 7, cold water pipe 7 is provided with spray orifice, body of heater 8 outer lower portion is provided with tank 12, arranging of cold water pipe can be lowered the temperature by effective body of heater shell, prevents the too high body of heater that causes of body of heater shell local temperature to rush to summit accident.
As a further improvement on the present invention, be provided with annular steel ring 11 vertically outside described body of heater 8, arranging of annular steel ring effectively can carry out booster action to body of heater, increases the security of body of heater.
As a further improvement on the present invention, described exhanst gas outlet 16 connects lead-splash condenser 18, lead-splash condenser 18 upper angled is provided with two drive-motor 2, every platform drive-motor 2 lower central position is provided with graphite rotator 17, shell and tube heat exchanger 19 is in series with on the left of lead-splash condenser 18, shell and tube heat exchanger 19 is connected sack cleaner 1, in order to reduce reoxidizing of zinc in condensation process, require that zinc vapor condensing becomes liquid zinc institute elapsed time better shorter, and condensed liquid zinc preferably dissolves each other with certain metal, to reduce the activity of zinc, reduce the oxidation of liquid zinc, splash condenser cannot overcome the oxidation of zinc, adopt lead-splash condenser then can meet the requirement of large-scale production.
Claims (5)
1. a zinc abstraction electric furnace, comprise body of heater (8), transformer (4), body of heater (8) horizontal cylindrical in closed at both ends, (8) are provided with bracing or strutting arrangement to body of heater, body of heater (8) left upper part is provided with exhanst gas outlet (16), body of heater (8) right-hand member bottom is provided with iron notch (10), body of heater (8) right-hand member middle and lower part is provided with slag-drip opening (9), multiple Graphite Electrodes (6) for heating furnace body (8) inner chamber is installed in body of heater (8) upper end, the charging opening (14) running through body of heater (8) is provided with between two adjoining graphite electrodes (6), transformer (4) top is provided with terminal stud (3), every root terminal stud (3) is provided with two wires (5), two wires (8) connect the Graphite Electrodes (6) at interval, transformer (4) is three-phase ac transformer, the rated capacity of transformer (4) is 16000KVA, transformer (4) quantity is two, Graphite Electrodes (6) quantity is 12, Graphite Electrodes (6) diameter is 550 ~ 650 millimeters.
2. a kind of zinc abstraction electric furnace is characterized in that according to claim 1: described body of heater (8) shell is steel plate (15), and body of heater (8) inner lower floor is refractory brick (13), and body of heater (8) inner upper strata is integrated the refractory materials of building.
3. a kind of zinc abstraction electric furnace is characterized in that according to claim 1: described body of heater (8) outer upper has been horizontally disposed with cold water pipe (7), and (7) are provided with spray orifice with cold water pipe, and body of heater (8) outer lower portion is provided with tank (12).
4. a kind of zinc abstraction electric furnace is characterized in that according to claim 1: described body of heater (8) outside is provided with annular steel ring (11) vertically.
5. it is characterized in that according to a kind of zinc abstraction electric furnace in claim 1 to 4 described in any one: described exhanst gas outlet (16) connects lead-splash condenser (18), lead-splash condenser (18) upper angled is provided with two drive-motor (2), every platform drive-motor (2) lower central position is provided with graphite rotator (17), lead-splash condenser (18) left side is in series with shell and tube heat exchanger (19), shell and tube heat exchanger (19) series connection sack cleaner (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126853.4A CN104726722A (en) | 2015-03-23 | 2015-03-23 | Zinc smelting electric furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126853.4A CN104726722A (en) | 2015-03-23 | 2015-03-23 | Zinc smelting electric furnace |
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| CN104726722A true CN104726722A (en) | 2015-06-24 |
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| CN201510126853.4A Pending CN104726722A (en) | 2015-03-23 | 2015-03-23 | Zinc smelting electric furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466224A (en) * | 2015-12-14 | 2016-04-06 | 湖南顶立科技有限公司 | Heating furnace |
Citations (7)
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| CN2423288Y (en) * | 2000-04-28 | 2001-03-14 | 贵州省冶金设计研究院 | Zinc-smelting electric furnace |
| CN101251334A (en) * | 2008-03-24 | 2008-08-27 | 云南昊龙实业集团兴煜冶炼有限公司 | Large diameter cylinder type graphite electrode giant electric furnace |
| CN201497340U (en) * | 2009-07-21 | 2010-06-02 | 中国恩菲工程技术有限公司 | Electrically heated dilution furnace for smelted copper slag |
| CN102285768A (en) * | 2011-06-14 | 2011-12-21 | 郭永强 | One-step method for producing mineral wool by using metallurgical high-temperature slag and equipment adopted thereby |
| CN202415653U (en) * | 2011-12-28 | 2012-09-05 | 北京矿冶研究总院 | Smelting device for antimony-zinc-lead-containing concentrate |
| CN102674680A (en) * | 2011-10-10 | 2012-09-19 | 郭永强 | Process for producing high-quality mineral wool by one-step method and equipment used by process for producing high-quality mineral wool by one-step method |
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
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2015
- 2015-03-23 CN CN201510126853.4A patent/CN104726722A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2423288Y (en) * | 2000-04-28 | 2001-03-14 | 贵州省冶金设计研究院 | Zinc-smelting electric furnace |
| CN101251334A (en) * | 2008-03-24 | 2008-08-27 | 云南昊龙实业集团兴煜冶炼有限公司 | Large diameter cylinder type graphite electrode giant electric furnace |
| CN201497340U (en) * | 2009-07-21 | 2010-06-02 | 中国恩菲工程技术有限公司 | Electrically heated dilution furnace for smelted copper slag |
| CN102285768A (en) * | 2011-06-14 | 2011-12-21 | 郭永强 | One-step method for producing mineral wool by using metallurgical high-temperature slag and equipment adopted thereby |
| CN102674680A (en) * | 2011-10-10 | 2012-09-19 | 郭永强 | Process for producing high-quality mineral wool by one-step method and equipment used by process for producing high-quality mineral wool by one-step method |
| CN202415653U (en) * | 2011-12-28 | 2012-09-05 | 北京矿冶研究总院 | Smelting device for antimony-zinc-lead-containing concentrate |
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466224A (en) * | 2015-12-14 | 2016-04-06 | 湖南顶立科技有限公司 | Heating furnace |
| CN105466224B (en) * | 2015-12-14 | 2018-01-26 | 湖南顶立科技有限公司 | A kind of heating furnace |
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Application publication date: 20150624 |