CN105039738B - Crude copper fire refining furnace and process - Google Patents

Crude copper fire refining furnace and process Download PDF

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Publication number
CN105039738B
CN105039738B CN201510445627.2A CN201510445627A CN105039738B CN 105039738 B CN105039738 B CN 105039738B CN 201510445627 A CN201510445627 A CN 201510445627A CN 105039738 B CN105039738 B CN 105039738B
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China
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converter
shaft furnace
furnace
copper
burner
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CN201510445627.2A
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Chinese (zh)
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CN105039738A (en
Inventor
王泊远
满毅
王振江
张继英
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天津宏华焊研机器人科技有限公司
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Publication of CN105039738A publication Critical patent/CN105039738A/en
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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

A kind of blister copper pyro-refining stove and refinery practice
Technical field
The invention belongs to field of metallurgy, it is related to the refine of blister copper, especially a kind of blister copper pyro-refining stove and refinery practice.
Background technology
The method of refining of copper has pyro-refining and electrolysis copper metallurgy two class, and the type of furnace of wherein pyro-refining has reverberatory furnace, revolution Three kinds of formula refining furnace, tilting-type refining furnace.
Reverberatory furnace is traditional pyro-refining equipment, is a kind of surface heated hearth furnace, and structure is simple, processing ease, Cold burden can be processed, also can process hot material, fluid fuel, liquid fuel or gaseous fuel can be baked.Reflection furnace volume, body of heater chi Very little can greatly, can be little, fluctuation range is larger;Treating capacity can change to 400t from 1t, and adaptability is very strong.At present, process cold burden relatively How many factories and the less factory of scale, produce anode copper using reverberatory furnace.But this reverberatory furnace there is also following several sides The shortcoming in face: airduct is inserted in (1) oxidation, reduction, skimming, putting the operations such as copper is entirely manual operations, the amount of labour and high labor intensive, Labor condition difference is it is difficult to realize mechanization and automatization;(2) body of heater poor air-tightness, radiation loss is big, and smoke spillage is many, workshop Environment is poor;(3) refractory material consumption is many, and airduct and auxiliary material consume greatly;(4) copper liquid agitation Cycle Difference in stove, operation effect Rate is low.
Rotary furnace is the pyro-refining equipment of the fifties later development, and it is a columnar body of heater, on body of heater It is configured with 2-4 airduct, a fire door and a copper outlet, 360 can be made0Revolution, rotating furnace imbeds air port under liquid level, enters Row oxidation, reduction operation.Revolution body of heater can carry out feeding, slagging, copper, easy and simple to handle, flexible, compare with reverberatory furnace, have Advantages below: (1) furnace binding is simple, mechanization, high degree of automation.Eliminate slotting airduct, skim, copper etc. is artificial grasps Make.In the low blister copper of process impurity content, it is possible to achieve programme-control;(2) furnace capacity changes to 550t from 100t, processes Ability is big, and technical-economic index is good, and labor productivity is high;(3) eliminate slotting airduct the operation such as to skim, auxiliary material consumption subtracts Few;(4) rotary furnace good leak tightness, body of heater radiation loss is little, and fuel consumption is low;(5) body of heater good leak tightness, uses negative pressure operation, leakage Cigarette is few, decreases environmental pollution.
Tilting furnace is a kind of new refine type of furnace, and it has Rotary Anode Furnace mechanization concurrently, can fascinate and reverberatory furnace can Plus the advantage of cold burden, the refine for reclaimed copper is a kind of preferably selection, but tilting furnace cost is too high.
After fuel-gas shaft furnace is transformed by some companies domestic, be successfully applied to melt adopting electrolysis residual pole raw material, and by with reflection Refining furnace cooperation produces, and develops into " the shaft furnace~reverberatory furnace joint copper essence of continuous feed, continuous refining, direct casting anode copper Refining " technique, obtains marked improvement in terms of production capacity, energy consumption, working performance.
Above-mentioned technique, in addition to " shaft furnace~reverberatory furnace joint copper refining " technique, is and periodically produces, all process routes Have and all consume high, the low shortcoming of low production efficiency, energy utilization rate.
By retrieving, three patent documents related with the present patent application of discovery:
1st, the pyro-refining (cn1034960) of blister copper, is mainly characterized by carrying out pyrogenic process essence for the higher ore deposit blister copper of quality During refining, it is blown into nitrogen in the top spray gun of converter, refining furnace or copper-clad is to the blister copper solution of melting, to reach removing copper liquid In sulfur, the purpose of the impurity such as oxygen, the anode copper of output better quality.The present invention has that the activity duration is short, fuel consumption is few, no With or use reducing agent, equipment simple less, it is easy to accomplish the advantages of.
2nd, a kind of process for refining raw copper bynon-oxidizing nitrogen-doping reducing pyrometallurgy (cn1390962), rationally controls when bessemerizing [s], [o] of copper terminal, makes partial desulfurization task incidentally be completed by reduction process, thus eliminating traditional anode furnace oxidation Operation process, and replace air to carry out deslagging with nitrogen, mix certain proportion nitrogen in reducing agent during reduction operation and carry out also Former.This technological operation is simple, and duty cycle is short, and production efficiency is high, and energy resource consumption is low, and the anode plate quality of production is high, and disappears Except black smoke pollution, it is suitable for realizing big commercial production.
3rd, a kind of small size pyro-converting furnace for raw copper (cn2266601), shaft casing is made up of steel plate, and top cover is by screw and stove Body is connected.By shaping and amorphous refractory lining-up, shaft side middle and lower part has charging to take off quarrel mouth to burner hearth, and another side lower part has Go out blister copper mouth, taking off quarrel mouth left and right sides equal height center in charging has air duct mouth, have above charging aperture mobilizable petticoat pipe with Chimney communicates.The support that shaft is made up of channel-section steel rotary shaft supports hanging, when applying external force by prizing mouth, makes the shaft can be one Determine to rotate in radian.This stove furnace life is long, and blister copper duration of blast is short, and energy and material consumes low, blister copper mass rate of production height.
By the contrast of technical characteristic, patent documentation disclosed above and the present patent application are in furnace binding and preparation method On all have relatively big difference, thus without destroying the creativeness of the present patent application and novelty.
Content of the invention
It is an object of the invention in place of overcoming the deficiencies in the prior art, providing a kind of blister copper pyro-refining stove and refine work Skill, this refining furnace clever structure, design science, environmental protection, production efficiency is high and can achieve continuous production.
The present invention solves its technical problem and takes technical scheme below to realize:
A kind of blister copper pyro-refining stove, is made up of shaft furnace and converter, is formed with connection boss in the bottom radial communication of shaft furnace, This coaxially connected converter of connection boss, this converter rotates coaxially on the connection boss of shaft furnace, and the connection boss of shaft furnace is formed Fluid port connection converter burner hearth;Coaxially it is fixed with converter end socket in the outer end of converter, converter end socket is coaxially fixedly mounted with one also Former burner, the flame end of this reduction burner coaxially corresponds to the fluid port that shaft furnace connects boss;Described shaft furnace is uprightly cylindric, steel Shell, inside has insulating brick, and shaft furnace bottom furnace wall 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;Outer rim cylinder in converter Upper uniform interval is fixed with rolling band, is provided with roller on the basis of corresponding converter rolling band.
And, the reduction burner of described converter is led to by the insulation cooling layer of outer layer and its axis of interior sequentially coaxially setting Hole, combustion gas annular distance and oxygen annular distance are constituted, and the high speed oxygen stream in middle shaft through-hole injects directly to the fluid port of shaft furnace, so that perpendicular Oxidizing atmosphere is maintained in stove.
A kind of blister copper fire refining process, step is:
(1) raw material uses automatic equipment to put into from shaft furnace top, is initially charged the raw material of 0.5-1 hour fusing amount, opens during blow-on Open oxidation burner heating, the oxygen-enriched coefficient of wherein oxidation burner is more than 1, is consequently formed oxidizing atmosphere;The reduction burner of converter is rich Oxygen quotient is less than 1, is consequently formed reducing atmosphere;Along shaft furnace tangential direction, oxidation burner arranges that, to form rotation hot-fluid, reduction is burnt At least two, mouth can be with the oxygen channel of independent control, and one of them is high speed oxygen flow channel, and high speed oxygen stream is directly sprayed Fluid port to converter;
(2) the copper material of shaft furnace bottom is melted by the high temperature that in shaft furnace, all-oxygen combustion produces, due to the presence of excessive oxygen, Impurity is oxidized to form slag;Meanwhile, the high-temperature gas that burning produces preheats to copper material when discharging upwards;
(3), when slag reaches a certain amount of, by clawing slag except cinder notch, tap hole is used for draining in shaft furnace during blowing out Copper liquid;
(4) after the copper liquid in shaft furnace highly exceedes the lower edge of fluid port, copper hydrorrhea flows in converter, in the also Primordial Qi of converter Reduction process is completed under atmosphere;Turn the heat energy of furnace reduction burner combustion generation, copper liquid and Converter are passed to by radiation and convection current Wall, due to converter rotation, the heat of furnace wall is heated also by being conducted to copper liquid;
(5) the liquid outlet through converter head end for the clean copper liquid after reducing releases casting.
Advantages of the present invention and good effect are:
1st, the present invention is using " shaft furnace can tilting converter " structure, and oxidation separates with reduction process it is achieved that production process Serialization, improve production efficiency, larger production capacity can be reached with the device of reduced size simultaneously, make equipment purchasing cost It is greatly lowered.
2nd, the present invention is burnt using total oxygen mode, can effectively reduce the discharge capacity of nitrogen oxides, furnace gas discharge capacity is significantly Degree reduces, and thermal loss reduces, and observable index air burning reduces by more than 30%.
3rd, the pure oxygen burning temperature of the present invention is high, and melting efficiency is higher than air burning, so that production efficiency is increased.
4th, oxidation burner of the present invention is arranged along shaft furnace tangential direction, can form rotation hot-fluid, make shaft furnace footpath To Temperature Distribution evenly, and cold burden heat exchange is more abundant.
Brief description
Fig. 1 is the cross section structural representation of the present invention;
Fig. 2 is Fig. 1 top view (locally);
Fig. 3 is the cross section enlarged drawing of the converter reduction burner of Fig. 1.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following examples are descriptive , it is not determinate it is impossible to protection scope of the present invention is limited with this.
A kind of blister copper pyro-refining stove, using " shaft furnace can tilting converter " structure, is made up of shaft furnace 6 and converter 4, perpendicular The bottom radial communication of stove is formed with connection boss 7, this coaxially connected converter of connection boss, and this converter is on the connection boss of shaft furnace Rotate coaxially, the fluid port 8 that the connection boss of shaft furnace is formed connects converter burner hearth.
Described converter is Horizontal cylinder tubular, outer steel shell, interior block high-temperature refractory;Uniform on the outer rim cylinder of converter Interval is fixed with rolling band 3, is three shown in the present embodiment accompanying drawing, is provided with roller 5 on the basis of corresponding converter rolling band, should Roller passes through frequency conversion motor (not shown) driving rolls and is driven, and roller rolls band by frictional force drives thus makes converter coaxially turn Dynamic.Coaxially it is fixed with converter end socket 2 in the outer end of converter, a reduction burner 1 is coaxially fixedly mounted with converter end socket, this reduction burner Flame end coaxially correspond to shaft furnace connect boss fluid port, also serve as simultaneously except cinder notch use.
Described shaft furnace is uprightly cylindric, and outer steel shell inside has insulating brick, shaft furnace bottom furnace wall radial direction has except cinder notch 9 He Tap hole 10;Tangentially it is 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 is not given) can be installed in shaft furnace top, for recovery waste heat and eliminate disposal of pollutants.
The reduction burner at least two of described converter can be with the oxygen channel of independent control and a blast tube, at this In embodiment accompanying drawing 3, described reduction burner by outer layer insulation cooling layer 12 and its interior sequentially coaxially setting middle shaft through-hole 15, Combustion gas annular distance 14 and oxygen annular distance 13 are constituted, and high speed oxygen stream injects directly to the fluid port of shaft furnace, so that maintaining oxygen in shaft furnace Activating QI atmosphere.
A kind of blister copper fire refining process, step is:
(1) raw material uses automatic equipment to put into from shaft furnace top, is initially charged the raw material of 0.5-1 hour fusing amount, opens during blow-on Open oxidation burner heating, the oxygen-enriched coefficient of wherein oxidation burner is more than 1, is consequently formed oxidizing atmosphere;The reduction burner of converter is rich Oxygen quotient is less than 1, is consequently formed reducing atmosphere;The midget plant being less than 8 ton hour for melting rate can not set oxidation and burn Mouth, oxidation burner can form rotation hot-fluid along shaft furnace tangential direction arrangement, makes shaft furnace radial temperature profile evenly, and cold burden Heat exchange is more abundant;But reduction burner at least two can be with the oxygen channel of independent control, and one of them is high speed oxygen stream Road, high speed oxygen stream injects directly to the fluid port of converter, so that maintaining oxidizing atmosphere in shaft furnace.
(2) the copper material of shaft furnace bottom is melted by the high temperature that in shaft furnace, all-oxygen combustion produces, due to the presence of excessive oxygen, Impurity is oxidized to form slag;Meanwhile, the high-temperature gas that burning produces preheats to copper material when discharging upwards.
(3) when slag reaches a certain amount of, can be by slag being clawed except cinder notch, tap hole is used for draining shaft furnace during blowing out Interior copper liquid.
(4), but after the copper liquid in shaft furnace highly exceedes the lower edge of fluid port, copper hydrorrhea flows in converter, in the reduction of converter Reduction process can be completed through 10 minutes about under atmosphere;Turn furnace reduction burner combustion generation heat energy, by radiation and right Spread to copper liquid and converter furnace wall, because the rotation of 0.5-1.5rpm speed is pressed in converter, the heat of furnace wall is also by being conducted to copper liquid Heat.
(5) the liquid outlet through converter head end for the clean copper liquid after reducing releases casting.
(6) the separation of oxidation and reduction process is it is achieved that the serialization of production process.

Claims (4)

1. a kind of blister copper pyro-refining stove, be made up of shaft furnace and converter it is characterised in that: be formed with the bottom radial communication of shaft furnace Connect boss, this coaxially connected converter of connection boss, this converter rotates coaxially on the connection boss of shaft furnace, and the connection of shaft furnace is convex The fluid port connection converter burner hearth that platform is formed;Coaxially it is fixed with converter end socket in the outer end of converter, coaxial on converter end socket It is fixedly mounted with a reduction burner, the flame end of this reduction burner coaxially corresponds to the fluid port that shaft furnace connects boss;Described shaft furnace is upright Cylindrical shape, outer steel shell, inside there is insulating brick, shaft furnace bottom furnace wall radial direction has except cinder notch and tap hole;Tangential in the furnace wall of shaft furnace It is fixed with one group of oxidation burner, the installation site of this oxidation burner exceeds fluid port.
2. blister copper pyro-refining stove according to claim 1 it is characterised in that: described converter be Horizontal cylinder tubular, steel Shell, interior block high-temperature refractory;On the outer rim cylinder of converter, uniform interval is fixed with rolling band, in the base of corresponding converter rolling band Roller is provided with plinth.
3. blister copper pyro-refining stove according to claim 1 it is characterised in that: described converter reduction burner by outer layer The middle shaft through-hole of insulation cooling layer and its interior sequentially coaxially setting, combustion gas annular distance and oxygen annular distance are constituted, and high speed oxygen stream is direct Spray to the fluid port of shaft furnace, so that maintaining oxidizing atmosphere in shaft furnace.
4. a kind of blister copper fire refining process it is characterised in that: step is:
(1) raw material uses automatic equipment to put into from shaft furnace top, is initially charged the raw material of 0.5-1 hour fusing amount during blow-on, opens oxygen Change burner heating, the oxygen-enriched coefficient of wherein oxidation burner is more than 1, is consequently formed oxidizing atmosphere;The oxygen-enriched system of reduction burner of converter Number is less than 1, is consequently formed reducing atmosphere;Along shaft furnace tangential direction, oxidation burner arranges that reduction burner is extremely to form rotation hot-fluid Rare two can be with the oxygen channel of independent control, and one of them is high speed oxygen flow channel, and high speed oxygen stream injects directly to and turns The fluid port of stove;
(2) the copper material of shaft furnace bottom is melted, due to the presence of excessive oxygen, impurity by the high temperature that in shaft furnace, all-oxygen combustion produces It is oxidized to form slag;Meanwhile, the high-temperature gas that burning produces preheats to copper material when discharging upwards;
(3), when slag reaches a certain amount of, by clawing slag except cinder notch, tap hole is used for draining copper liquid in shaft furnace during blowing out;
(4) after the copper liquid in shaft furnace highly 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 of furnace reduction burner combustion generation, copper liquid and converter furnace wall are passed to by radiation and convection current, by In converter rotation, the heat of furnace wall is heated also by being conducted to copper liquid;
(5) the liquid outlet through converter head end for the clean copper liquid after reducing releases casting.
CN201510445627.2A 2015-07-27 2015-07-27 Crude copper fire refining furnace and process CN105039738B (en)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
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
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
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
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

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MX2007002782A (en) * 2004-09-07 2009-02-12 Univ Chile Installation for continuous fire refining of copper.
CN102212705B (en) * 2011-05-24 2013-12-04 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

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