CN105039738A - Crude copper fire refining furnace and process - Google Patents
Crude copper fire refining furnace and process Download PDFInfo
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- CN105039738A CN105039738A CN201510445627.2A CN201510445627A CN105039738A CN 105039738 A CN105039738 A CN 105039738A CN 201510445627 A CN201510445627 A CN 201510445627A CN 105039738 A CN105039738 A CN 105039738A
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Abstract
The invention relates to a crude copper fire refining furnace and method. The crude copper fire refining furnace is composed of a shaft furnace and a converter; the lower portion of the shaft furnace is provided with a connection boss in a communicated mode in the radial direction; the connection boss is coaxially connected with the converter; the converter coaxially rotates on the connection boss of the shaft furnace; a liquid flowing port formed by the connection boss of the shaft furnace is communicated with a converter hearth. By the adoption of the structure of the shaft furnace and the tilting converter, the oxidation process and the reduction process are separated; the continuous production process is achieved; the production efficiency is improved; meanwhile, the larger capacity can be achieved through the device with the smaller size, so that the equipment purchase cost is reduced greatly.
Description
Technical field
The invention belongs to field of metallurgy, relate to the refining of blister copper, especially a kind of blister copper pyrorefining stove and refinery practice.
Background technology
The method of refining of copper has pyrorefining and electrolysis copper metallurgy two class, and the type of furnace of wherein pyrorefining has reverberatory furnace, rotary refining furnace, tilting-type refining furnace three kinds.
Reverberatory furnace is traditional pyrorefining equipment, is a kind of surface heated ore hearth, and structure is simple, and processing ease, can process cold burden, also can process heat material, can bake fluid fuel, liquid fuel or geseous fuel.Reverberatory furnace volume, body of heater size can greatly, can be little, fluctuation range is larger; Treatment capacity can change to 400t from 1t, and adaptability is very strong.At present, the more factory of process cold burden and the less factory of scale, anode copper produced by the reverberatory furnace that adopts more.But this reverberatory furnace also also exists the shortcoming of following several respects: airduct is inserted in (1) oxidation, reduction, skimming, putting the operations such as copper is all manual operations, and greatly, labor condition is poor, is difficult to realize mechanize and automatization for labor capacity and labour intensity; (2) body of heater poor air-tightness, heat lost by radiation is large, and smoke spillage is many, and workshop condition is poor; (3) refractory materials consumption is many, airduct and subsidiary material consumption large; (4) in stove, copper liquid stirs Cycle Difference, and operation efficiency is low.
Rotary kiln is the pyrorefining equipment of the fifties later development, and it is a columnar body of heater, and body of heater is configured with 2-4 airduct, and a fire door and a copper outlet, can do 360
0revolution, under liquid level is imbedded in air port by rotating furnace, carries out being oxidized, restore job.Revolution body of heater can carry out feeding in raw material, slagging, copper, easy and simple to handle, flexible, compare with reverberatory furnace, have the following advantages: (1) furnace binding is simple, mechanize, level of automation are high.Eliminate slotting airduct, skim, the manual operation such as copper.When the blister copper that process foreign matter content is low, time variable control can be realized; (2) furnace capacity changes to 550t from 100t, and processing power is large, and technico-economical comparison is good, and labour productivity is high; (3) eliminate slotting airduct the operation such as to skim, subsidiary material consumption reduces; (4) rotary kiln good leak tightness, body of heater heat lost by radiation is little, and fuel consumption is low; (5) body of heater good leak tightness, uses negative pressure operation, leaks cigarette few, decreases environmental pollution.
Tilting furnace is a kind of novel refining type of furnace, and it has Rotary Anode Furnace mechanize concurrently, can fascinate and reverberatory furnace can add the advantage of cold burden, and the refining for reclaimed copper is a kind of desirable selection, but tilting furnace cost is too high.
After fuel-gas shaft furnace is transformed by more domestic companies, be successfully applied to fusing adopting electrolysis residual pole raw material, and produce by coordinating with reflection refining furnace, develop into " shaft furnace ~ reverberatory furnace associating copper refining " technique of continuously feeding, continuous refining, continuous casting anode copper, in production capacity, energy consumption, operating efficiency, obtain marked improvement.
Above-mentioned technique, except " shaft furnace ~ reverberatory furnace associating copper refining " technique, is and periodically produces, all operational paths have all consume high, the shortcomings such as production efficiency is low, energy utilization rate is low.
By retrieval, find three sections of patent documents related with the present patent application:
1, the pyrorefining (CN1034960) of blister copper, principal character is when carrying out pyrorefining for the ore deposit blister copper that quality is higher, in the blister copper solution of melting, nitrogen is blown at the top spray gun of converter, refining furnace or copper-clad, to reach the object of the impurity such as sulphur, oxygen removed in copper liquid, the anode copper of output better quality.The present invention has that the activity duration is short, fuel consumption is few, uses no or little reductive agent, equipment is simple, be easy to the advantages such as realization.
2, a kind of process for refining raw copper bynon-oxidizing nitrogen-doping reducing pyrometallurgy (CN1390962), [S], [O] of conservative control copper terminal when bessemerizing, partial desulfurization task is incidentally completed by reduction process, thus eliminate traditional anode furnace oxidation operation process, and replace air to carry out deslagging with nitrogen, mix certain proportion nitrogen during restore job in reductive agent and reduce.This technological operation is simple, and working cycle is short, and production efficiency is high, and energy consumption is low, and the anode plate quality of production is high, and eliminates black smoke pollution, is suitable for realizing large industrial production.
3, a kind of small size pyro-converting furnace for raw copper (CN2266601), shaft jacket is made up of steel plate, and top cover is connected with shaft by screw.Burner hearth is by shaping and amorphous refractory lining-up, and middle and lower part, shaft side has charging to take off quarrel mouth, and there is blister copper mouth opposite side bottom, and taking off equal height center, the quarrel mouth left and right sides in charging has air duct mouth, has mobilizable petticoat pipe to communicate with chimney above opening for feed.The support that shaft is made up of channel-section steel rotation axis supports unsettled, when executing external force by sled mouth, shaft can be rotated in certain radian.This stove furnace life is long, and blister copper duration of blast is short, and energy and material consumes low, and blister copper mass rate of production is high.
By the contrast of technical characteristic, above-mentioned patent document and the present patent application all have relatively big difference in furnace binding and in preparation method, therefore can not destroy creativeness and the novelty of the present patent application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of blister copper pyrorefining stove and refinery practice, this refining furnace structure is ingenious, design science, environmental protection, and production efficiency is high also can realize continuous seepage.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of blister copper pyrorefining stove, be made up of shaft furnace and converter, be shaped with connection boss in the bottom radial communication of shaft furnace, this connection boss coaxially connects converter, this converter is coaxial rotation on the connection boss of shaft furnace, and the fluid port that the connection boss of shaft furnace is formed is communicated with converter burner hearth; Coaxially be fixed with converter end socket in the outer end of converter, converter end socket is coaxially fixedly mounted with a reduction burner, the coaxial corresponding shaft furnace of flame end of this reduction burner connects the fluid port of boss; Described shaft furnace is upright cylindric, and outer steel shell, inside has insulating brick, and furnace wall, shaft furnace bottom radial direction has except cinder notch and tap hole; Cut in the furnace wall of shaft furnace
To being fixed with one group of oxidation burner, the installation site of this oxidation burner exceeds fluid port.
And described converter is Horizontal cylinder tubular, outer steel shell, interior block high-temperature refractory; On the outer rim cylinder of converter, uniform interval is fixed with and rolls band, and the basis of rolling band in corresponding converter is provided with roller.
And, the reduction burner of described converter is made up of shaft through-hole, combustion gas annular distance and oxygen annular distance in outer field insulation cooling layer and interior coaxial setting successively thereof, high speed oxygen air-flow in middle shaft through-hole injects directly to the fluid port of shaft furnace, to make to maintain oxidizing atmosphere in shaft furnace.
A kind of blister copper fire refining process, step is:
(1) raw material uses auto-plant to drop into from shaft furnace top, first adds the raw material of 0.5-1 hour fusing amount during blow-on, and open the heating of oxidation burner, the oxygen enrichment coefficient being wherein oxidized burner is greater than 1, forms oxidizing atmosphere thus; The reduction burner oxygen enrichment coefficient of converter is less than 1, forms reducing atmosphere thus; Oxidation burner arranges to form rotation hot-fluid along shaft furnace tangential direction, and reduction burner has two oxygen channels that can independently control at least, and one of them is high speed oxygen flow channel, and high speed oxygen air-flow injects directly to the fluid port of converter;
(2) the copper material of shaft furnace bottom melts by the high temperature that in shaft furnace, full-oxygen combustion produces, owing to there being excessive oxygen to exist, and the oxidized formation slag of impurity; Meanwhile, to the preheating of copper material when the high-temperature gas that burning produces upwards is discharged;
(3), when slag reaches a certain amount of, by being clawed by slag except cinder notch, when tap hole is used for blowing out, drain copper liquid in shaft furnace;
(4), after the copper liquid height in shaft furnace exceedes the lower edge of fluid port, copper hydrorrhea flows in converter, under the reducing atmosphere of converter, complete reduction process; Turn the heat energy that furnace reduction burner combustion produces, pass to copper liquid and converter furnace wall by radiation and convection current, because converter rotates, the heat of furnace wall is also heated to copper liquid by conduction;
(5) the clean copper liquid after reduction releases casting through the liquid outlet of converter head end.
Advantage of the present invention and positively effect are:
1, the present invention adopts " shaft furnace-can tilting converter " structure, oxidation is separated with reduction process, achieves the serialization of production process, improves production efficiency, larger production capacity can be reached with the device of reduced size simultaneously, equipment purchasing cost is significantly reduced.
2, the present invention uses total oxygen mode to burn, and effectively can reduce the quantity discharged of oxynitride, furnace gas quantity discharged significantly reduces, and calorific loss reduces, and observable index air combustion reduces by more than 30%.
3, pure oxygen burning temperature of the present invention is high, and melting efficiency is higher than air combustion, and production efficiency is increased.
4, oxidation burner of the present invention is arranged along shaft furnace tangential direction, can form rotation hot-fluid, make shaft furnace radial temperature profile evenly, and cold burden heat exchange is more abundant.
Accompanying drawing explanation
Fig. 1 is cross section structural representation of the present invention;
Fig. 2 is Fig. 1 vertical view (locally);
Fig. 3 is the cross section enlarged view of the converter reduction burner of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of blister copper pyrorefining stove, adopt " shaft furnace-can tilting converter " structure, be made up of shaft furnace 6 and converter 4, be shaped with in the bottom radial communication of shaft furnace and connect boss 7, this connection boss coaxially connects converter, this converter is coaxial rotation on the connection boss of shaft furnace, and the fluid port 8 that the connection boss of shaft furnace is formed is communicated with converter burner hearth.
Described converter is Horizontal cylinder tubular, outer steel shell, interior block high-temperature refractory; On the outer rim cylinder of converter, uniform interval is fixed with and rolls band 3, shown in the present embodiment accompanying drawing be three, the basis of rolling band in corresponding converter is provided with roller 5, this roller is by the transmission of variable-frequency motor (not shown) driving rolls, and roller rolls band by frictional force drives and makes converter coaxial rotation thus.Coaxially be fixed with converter end socket 2 in the outer end of converter, converter end socket is coaxially fixedly mounted with a reduction burner 1, the coaxial corresponding shaft furnace of flame end of this reduction burner connects the fluid port of boss, also uses as except cinder notch simultaneously.
Described shaft furnace is upright cylindric, and outer steel shell, inside has insulating brick, and furnace wall, shaft furnace bottom radial direction has except cinder notch 9 and tap hole 10; Tangentially be fixed with one group of oxidation burner 11 in the furnace wall of shaft furnace, the installation site of this oxidation burner exceeds fluid port; Exhaust gas processing device (the present embodiment accompanying drawing does not provide) can be installed in shaft furnace top, for recovery waste heat and decontamination discharge.
The reduction burner of described converter has two oxygen channels that can independently control and a blast tube at least, in the present embodiment accompanying drawing 3, described reduction burner is made up of shaft through-hole 15, combustion gas annular distance 14 and oxygen annular distance 13 in outer field insulation cooling layer 12 and interior coaxial setting successively thereof, high speed oxygen air-flow injects directly to the fluid port of shaft furnace, to make to maintain oxidizing atmosphere in shaft furnace.
A kind of blister copper fire refining process, step is:
(1) raw material uses auto-plant to drop into from shaft furnace top, first adds the raw material of 0.5-1 hour fusing amount during blow-on, and open the heating of oxidation burner, the oxygen enrichment coefficient being wherein oxidized burner is greater than 1, forms oxidizing atmosphere thus; The reduction burner oxygen enrichment coefficient of converter is less than 1, forms reducing atmosphere thus; Packaged unit melting rate being less than to 8 tons/hour can not establish oxidation burner, and oxidation burner is arranged along shaft furnace tangential direction can form rotation hot-fluid, make shaft furnace radial temperature profile evenly, and cold burden heat exchange is more abundant; But reduction burner has two oxygen channels that can independently control at least, and one of them is high speed oxygen flow channel, and high speed oxygen air-flow injects directly to the fluid port of converter, to make to maintain oxidizing atmosphere in shaft furnace.
(2) the copper material of shaft furnace bottom melts by the high temperature that in shaft furnace, full-oxygen combustion produces, owing to there being excessive oxygen to exist, and the oxidized formation slag of impurity; Meanwhile, to the preheating of copper material when the high-temperature gas that burning produces upwards is discharged.
(3), when slag reaches a certain amount of, by being clawed by slag except cinder notch, when tap hole is used for blowing out, drain copper liquid in shaft furnace.
(4), after the copper liquid height but in shaft furnace exceedes the lower edge of fluid port, copper hydrorrhea flows in converter, under the reducing atmosphere of converter, can complete reduction process through about 10 minutes; Turn the heat energy that furnace reduction burner combustion produces, pass to copper liquid and converter furnace wall by radiation and convection current, press 0.5-1.5RPM speed rotate due to converter, the heat of furnace wall is also heated to copper liquid by conduction.
(5) the clean copper liquid after reduction releases casting through the liquid outlet of converter head end.
(6) oxidation and being separated of reduction process, achieve the serialization of production process.
Claims (4)
1. a blister copper pyrorefining stove, be made up of shaft furnace and converter, it is characterized in that: be shaped with connection boss in the bottom radial communication of shaft furnace, this connection boss coaxially connects converter, this converter is coaxial rotation on the connection boss of shaft furnace, and the fluid port that the connection boss of shaft furnace is formed is communicated with converter burner hearth; Coaxially be fixed with converter end socket in the outer end of converter, converter end socket is coaxially fixedly mounted with a reduction burner, the coaxial corresponding shaft furnace of flame end of this reduction burner connects the fluid port of boss; Described shaft furnace is upright cylindric, and outer steel shell, inside has insulating brick, and furnace wall, shaft furnace bottom radial direction has except cinder notch and tap hole; Tangentially be fixed with one group of oxidation burner in the furnace wall of shaft furnace, the installation site of this oxidation burner exceeds fluid port.
2. blister copper pyrorefining stove according to claim 1, is characterized in that: described converter is Horizontal cylinder tubular, outer steel shell, interior block high-temperature refractory; On the outer rim cylinder of converter, uniform interval is fixed with and rolls band, and the basis of rolling band in corresponding converter is provided with roller.
3. blister copper pyrorefining stove according to claim 1, it is characterized in that: the reduction burner of described converter is made up of shaft through-hole, combustion gas annular distance and oxygen annular distance in outer field insulation cooling layer and interior coaxial setting successively thereof, high speed oxygen air-flow injects directly to the fluid port of shaft furnace, to make to maintain oxidizing atmosphere in shaft furnace.
4. a blister copper fire refining process, is characterized in that: step is:
(1) raw material uses auto-plant to drop into from shaft furnace top, first adds the raw material of 0.5-1 hour fusing amount during blow-on, and open the heating of oxidation burner, the oxygen enrichment coefficient being wherein oxidized burner is greater than 1, forms oxidizing atmosphere thus; The reduction burner oxygen enrichment coefficient of converter is less than 1, forms reducing atmosphere thus; Oxidation burner arranges to form rotation hot-fluid along shaft furnace tangential direction, and reduction burner has two oxygen channels that can independently control at least, and one of them is high speed oxygen flow channel, and high speed oxygen air-flow injects directly to the fluid port of converter;
(2) the copper material of shaft furnace bottom melts by the high temperature that in shaft furnace, full-oxygen combustion produces, owing to there being excessive oxygen to exist, and the oxidized formation slag of impurity; Meanwhile, to the preheating of copper material when the high-temperature gas that burning produces upwards is discharged;
(3), when slag reaches a certain amount of, by being clawed by slag except cinder notch, when tap hole is used for blowing out, drain copper liquid in shaft furnace;
(4), after the copper liquid height in shaft furnace exceedes the lower edge of fluid port, copper hydrorrhea flows in converter, under the reducing atmosphere of converter, complete reduction process; Turn the heat energy that furnace reduction burner combustion produces, pass to copper liquid and converter furnace wall by radiation and convection current, because converter rotates, the heat of furnace wall is also heated to copper liquid by conduction;
(5) the clean copper liquid after reduction releases casting through the liquid outlet of converter head end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510445627.2A CN105039738B (en) | 2015-07-27 | 2015-07-27 | Crude copper fire refining furnace and process |
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| CN201510445627.2A CN105039738B (en) | 2015-07-27 | 2015-07-27 | Crude copper fire refining furnace and process |
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| CN105039738A true CN105039738A (en) | 2015-11-11 |
| CN105039738B CN105039738B (en) | 2017-01-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277361A (en) * | 2018-04-08 | 2018-07-13 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining furnace |
| CN108425021A (en) * | 2018-04-08 | 2018-08-21 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining process |
| CN108559855A (en) * | 2018-04-08 | 2018-09-21 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining device |
| CN108588442A (en) * | 2018-04-08 | 2018-09-28 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining process |
| CN110791662A (en) * | 2018-08-01 | 2020-02-14 | 铜陵富翔铜再生循环利用有限公司 | Method for preparing high-purity copper ingot by using oil-containing scrap copper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006029246A1 (en) * | 2004-09-07 | 2006-03-16 | Universidad De Chile | Installation for continuous fire refining of copper |
| CN102212705A (en) * | 2011-05-24 | 2011-10-12 | 江西稀有稀土金属钨业集团有限公司 | Combined furnace system for fire refining of red copper scrap |
| CN204918717U (en) * | 2015-07-27 | 2015-12-30 | 王泊远 | Thick copper fire refining stove |
-
2015
- 2015-07-27 CN CN201510445627.2A patent/CN105039738B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029246A1 (en) * | 2004-09-07 | 2006-03-16 | Universidad De Chile | Installation for continuous fire refining of copper |
| CN102212705A (en) * | 2011-05-24 | 2011-10-12 | 江西稀有稀土金属钨业集团有限公司 | Combined furnace system for fire refining of red copper scrap |
| CN204918717U (en) * | 2015-07-27 | 2015-12-30 | 王泊远 | Thick copper fire refining stove |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277361A (en) * | 2018-04-08 | 2018-07-13 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining furnace |
| CN108425021A (en) * | 2018-04-08 | 2018-08-21 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining process |
| CN108559855A (en) * | 2018-04-08 | 2018-09-21 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining device |
| CN108588442A (en) * | 2018-04-08 | 2018-09-28 | 中国恩菲工程技术有限公司 | A kind of blister copper pyrogenic process continuous refining process |
| CN108588442B (en) * | 2018-04-08 | 2020-11-17 | 中国恩菲工程技术有限公司 | Fire continuous refining process for crude copper |
| CN108559855B (en) * | 2018-04-08 | 2020-11-17 | 中国恩菲工程技术有限公司 | Continuous refining device of blister copper pyrogenic process |
| CN108277361B (en) * | 2018-04-08 | 2020-11-17 | 中国恩菲工程技术有限公司 | Crude copper pyrogenic process continuous refining furnace |
| CN110791662A (en) * | 2018-08-01 | 2020-02-14 | 铜陵富翔铜再生循环利用有限公司 | Method for preparing high-purity copper ingot by using oil-containing scrap copper |
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