CN103952571A - One-step copper smelting technology and device thereof - Google Patents

One-step copper smelting technology and device thereof Download PDF

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Publication number
CN103952571A
CN103952571A CN201410156737.2A CN201410156737A CN103952571A CN 103952571 A CN103952571 A CN 103952571A CN 201410156737 A CN201410156737 A CN 201410156737A CN 103952571 A CN103952571 A CN 103952571A
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copper
oxygen
smelting
slag
blowing
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CN103952571B (en
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崔志祥
王智
申殿邦
边瑞民
李德松
王海滨
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DONGYING LUFANG METAL MATERIAL Co Ltd
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DONGYING LUFANG METAL MATERIAL Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.

Description

One step copper metallurgy technique and device thereof
Technical field
The invention belongs to nonferrous metallurgy field, relate to a kind of technique and the device thereof that can process a step copper metallurgy of multi-metal complex ore deposit and precious metal associated minerals.
Background technology
At present, the pyrometallurgical smelting of copper is with regard to melting technology, for industrial existing: Flash Smelting Furnace melting, Rouyn-Noranda melting, Ausmelt technology, the melting of Chinese mugwort Sa, the melting of silver method, bottom-blown smelting and traditional blast furnace smelting, electrosmelting, reverberatory smelting etc.Above-mentioned melting method except rear three kinds of traditional method environmental protection be difficult to up to standard, the comparatively advanced melting technology that other Dou Shi world todays adopt.With regard to the blowing of copper, the world today is upper more than 90% is all to adopt PS converter.With regard to the refining of copper, great majority adopt rotary kiln refining, reverberatory refining and tilting furnace refining.These smelting processes are all separately to carry out in different stoves, and the utilization ratio of sulphur is low, and thermosteresis is many.Particularly the copper matte regulus of blowing, melting output need wrap in workshop and have bad luck with copper matte regulus, causes SO 2the loss of flue gas low latitude, adds the reinforced and converting process of converter, and flue gas is difficult to seal completely, also has loss phenomenon in various degree, makes PS bessemerize the operating environment of operation very poor.
Have now two kinds for industrial continuous converting technique, a kind of is the Mitsubishi process of Japan's research and development, adopts the melting of top blast stove, electric furnace sedimentation copper matte regulus, and slag is carried out to dilution, more continuously copper matte regulus is blown to blister copper with top blast stove.Three stoves connect with two chutes, have realized continual copper smelting.Another kind is the copper metallurgy technique of Utah,U.S.A Kennecott smeltery, adopts that Flash Smelting Furnace melting, slag ore dressing, copper matte regulus water are broken, dry, ore grinding blows into blister copper with Flash Smelting Furnace again.Above-mentioned two kinds of continual copper smelting techniques, although solved the environmental issue of blowing operation, also have weak point, require further improvement raising.
Summary of the invention
The object of the invention is to defect and deficiency for existing smelting process, a kind of step copper smelting device and technique thereof that can simultaneously complete melting, blowing and three processes of refining in a stove is provided.
Technical scheme of the present invention is: step copper smelting device and a technique thereof, its device comprises body of heater, charging opening, floss hole, burner, slag notch, puts copper mouth, spray gun, flux mouth, by smelting zone, blowing district, fining cell three parts, is formed in body of heater, between by barricade, separated; Body of heater is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater is by two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun of furnace injection oxygen-rich air or Sweet natural gas; Charging opening is located at top, smelting zone, and floss hole and flux mouth are located at top, blowing district, and main burner, auxiliary burner are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch and put copper mouth all on the headwall of auxiliary burner one side.
The spray gun of described smelting zone becomes 0 °-22 ° with vertical line, the spray gun in blowing district becomes 30 °-45 ° ,-70 ° at 45 ° of spray gun and the vertical line of fining cell with vertical line.
Described smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 1.1m, become 9 spray guns at 17 ° and 22 ° angles with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 1.1m, become 5 spray guns at 35 ° and 40 ° angles with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, 5 spray guns at interval 1.1m, and 50 ° angles at 45 ° with vertical line.
One step copper smelting device and technique thereof, its processing step is:
(1) by polymetallic ore with solvent and after returning dirt and mixing, by the charging opening on top, smelting zone, joined in stove, by spray gun from bottom to top, the oxygen-rich air of injecting 65%-78% is at a high speed in melt, fully mix contact, carry out pyritic smelting, generate copper matte regulus and smelting slag, copper matte regulus is containing more than Cu70%; Temperature is controlled at 1180-1250 ℃;
(2) copper matte regulus generating flows to blowing district from barricade bottom, and the oxygen-rich air of sending into 20%-40% by spray gun blows, and copper matte regulus is blown into blister copper and slag; Blowing district temperature is controlled at 1200-1250 ℃;
(3) blister copper generating flow into fining cell from barricade bottom, and oxygen-rich air and the Sweet natural gas of by spray gun, sending into 20%-30% carry out refining, and blister refining is become to the anode copper that purity is higher, and fining cell temperature is generally at 1100-1200 ℃;
(4) the higher anode copper of purity that above-mentioned fining cell generates is emitted from putting copper mouth interruption, by chute, deliver to anode casting machine, cast copper anode plate and send to electrorefining, the slag generating is emitted continuously from the slag notch overflow of barricade top area, after slow cooling, send to the ore dressing of slag dressing-works, the slag copper ore concentrates of selecting returns in stove and continues to smelt, and mine tailing can fully utilize by making cement factory raw material, realization is without waste sludge discharge, generation contain SO 2high-temperature flue gas through floss hole, arrive waste heat boiler cooling and gather dust, output saturation steam carries out cogeneration, the flue gas after cooling is sent to desulfurization relieving haperacidity again after dust cleaning.
In described step (1): the temperature of smelting zone is by regulating the oxygen of oxygen-rich air, empty ratio or unit time oxygen-supplying amount to realize.The matte grade of smelting zone is by controlling oxygen material than realizing.In smelting zone, near barricade section, no longer send oxygen to stir, make the abundant sedimentation of copper matte regulus, be easy to copper matte regulus separated with slag, reduce slag cupric.
In described step (2): blowing district temperature is by regulating concentration or the unit time oxygen-supplying amount of the oxygen of oxygen-rich air to realize; When sending oxygen blowing, from being located at the flux mouth on blowing top, district, by slag making required amount, add continuously quartzite, make iron white residue; Near the bottom, blowing district of barricade between blowing district and fining cell, no longer establish spray gun and send oxygen to stir, the blister copper that slag and copper matte regulus layer are mingled with fully precipitates, and from slag, with separated copper matte regulus, and enters blister copper layer.
In described step (3): bottom blowing refining is to carry out the in the situation that of blister copper, anode copper and slag three-phase coexistence, and at oxidation stage, bottom spray gun passes into oxygen-rich air, at reduction phase, pass into Sweet natural gas and make reductive agent and will be dissolved in oxygen in copper and remove; Temperature can be by regulating the content of oxygen in oxygen-rich air and regulating from auxiliary burning nozzle oil spout; Near putting copper mouth section, no longer establish spray gun, make the abundant sedimentation of anode copper, from blister copper and slag, separate, and enter anode copper layer, reduce slag cupric.
The present invention compared to the prior art, its positively effect reaching mainly contain following some: (1) the present invention has realized pyritic smelting completely.This technology is carried out the three phases of smelting process in same stove, has saved copper matte regulus and blister copper the having bad luck of workshop, and calorific loss greatly reduces; Bottom convertor is one to seal tight container, and air leak rate of air curtain is low, and oxygen-rich concentration is high simultaneously, has reached 75% left and right, can greatly improve the intensity of melting and reduce exhaust gas volumn, and the less calories that gas is taken away, thus reduce thermosteresis; Bottom convertor is simple in structure, furnace water jacket is few and columnar structuredly can reduce heat leakage.Therefore this bottom convertor can not add any fuel, realizes pyritic smelting completely.
(2) the present invention is wide to adaptability to raw material scope, can not only extract concentrate such as copper, gold and silver, and can process to low-grade, unmanageable polymetallic ore and containing the high precious metal associated minerals of gold and silver, realizes the comprehensive utilization of resource.
(3) combustion intensity is large, and oxygen utilization rate is high, processes mineral aggregate ability strong.Oxygen enters stove by oxygen rifle from base injcction, and it is fast to inject speed, can effectively guarantee in stove fully vigorous reaction, reaction zone mixes, irrotational flow, without dead angle, can form good heat transfer and mass transfer condition, the utilization ratio of oxygen reaches 100%.
(4) the present invention is difficult for producing foamy slag, operational safety, and energy consumption is low, and slag cupric is low.Because the present invention is that bottom blowing is smelted, oxygen directly acts on copper matte regulus, blister copper and anode copper, so the oxygen gesture of slag making reaction is lower, is difficult for generating Fe 3o 4, so slag can adopt high iron silicon ratio slag type (the Mitsubishi process slag Fe/SiO of prior art 21.1-1.3, Flash Smelting Furnace slag are 1.48-1.65, and the present invention is 1.6-2.2), thus the quartzy flux amount adding is less, slag rate is low, and the inventory of slag ore dressing reduces, and energy consumption is corresponding decline also.In slag, contain Fe simultaneously 3o 4few, the viscosity of slag is lower, can reduce the content of copper in slag.
(5) copper metallurgy cost of the present invention is low, is conducive to relieving haperacidity.The periodic job that the present invention does not bessemerize, furnace temperature is stable, and converter life is long, has reduced consumption and the maintenance load of refractory materials, thereby reduces copper metallurgy cost.Meanwhile, body of heater need not often rotate, exhaust gas volumn and smoke components (SO 2content) stable, be conducive to relieving haperacidity, reduce relieving haperacidity cost.
(6) the present invention is strong to precious metal trapping ability, and many metals comprehensive recovery is high.Very strong to the dissolving power of precious metal at smelting zone sulfonium, under the high speed oxygen gas mixing of bottom convertor bottom is moving, sulfonium constantly rinses concentrate and slag repeatedly, precious metal is had to a repeatedly process for trapping, thereby make precious metal more be dissolved in sulphur, complete and make sulfonium and catch golden process, compare with other techniques and there is the higher precious metal rate of recovery.Simultaneously, when this technique oxygen sprays into smelting zone from furnace bottom, sulfonium temperature is higher, oxygen gesture is higher, be conducive to lead in concentrate, mercury, arsenic, antimony, bismuth etc. obtains fully and is enriched in flue dust after volatilization in bottom-blown smelting process, again through wet processing, the valuable element in can efficient recovery multi-metal complex ore deposit, expands utilization of resources scope.
(7) good operational environment, economic benefit is high, and labour intensity is low.Three smelting processes of this invention are carried out in same stove, have saved to disclose the eye of wind operation when copper matte regulus bag, blister copper wrap in having bad luck of workshop and blow, and have saved a large amount of human and material resources, have improved economic benefit, and labour intensity reduces greatly.Avoided SO simultaneously 2the low latitude loss of flue gas, operating environment is good.
(8) reduced investment.Three processes of smelting realize in same stove, and simple in structure, technical process is shortened greatly, and auxiliary facility is few.Simultaneously furnace charge preparation is simple, does not need the preprocessor such as depth drying, pulverizing, granulation, easy operation.Bottom blowing does not need very high factory building and expensive import equipment and technology transfer fee, so construction investment is low.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention.
Fig. 2 is process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, describe the embodiment of apparatus of the present invention structure in detail.
One step copper smelting device and technique thereof, its device comprises body of heater 1, charging opening 2, floss hole 3, burner 4 and 5, slag notch 6, puts copper mouth 7, spray gun 9, flux mouth 10, in body of heater 1, by smelting zone, blowing district, fining cell three parts, is formed, between by barricade 8, separated; Body of heater 1 is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater is by 1 two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater 1 can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun 9 of furnace injection oxygen-rich air or Sweet natural gas; Charging opening 2 is located at top, smelting zone, and floss hole 3 and flux mouth 10 are located at top, blowing district, and main burner 5, auxiliary burner 4 are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch 6 and put copper mouth 7 all on the headwall of auxiliary burner 4 one sides.
Described smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 1.1m, become 9 spray guns 9 at 17 ° and 22 ° angles with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 1.1m, become 5 spray guns 9 at 35 ° and 40 ° angles with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, 5 spray guns 9 at interval 1.1m, and 50 ° angles at 45 ° with vertical line.
Below in conjunction with accompanying drawing 2, describe the embodiment of technique of the present invention in detail.
Its processing step is: (1) is by complex multi-metal ore deposit and solvent and return after the mixing of materials such as dirt, charging opening by top, smelting zone joins in stove, the oxygen-rich air of 65%-78% becomes the spray gun at 17 ° and 22 ° angles by being located at furnace bottom with vertical line, inject in melt at a high speed from bottom to top,, in fully mixing contact process, there is the vigorous oxidation reaction of moment, discharge high energy heat, carry out pyritic smelting, generate copper matte regulus and smelting slag.Smelting zone temperature is 1080-1250 ℃, and temperature can be by regulating the oxygen of oxygen-rich air, empty ratio or unit time oxygen-supplying amount to realize.Generate higher-grade copper matte regulus, generally containing more than Cu70%, can alleviate so follow-up copper matte regulus blowing working load, also can reduce blowing slag, matte grade can recently be realized by controlling oxygen material.In smelting zone, near barricade section, no longer send oxygen to stir, such one is to make copper matte regulus have certain settling time, is easy to copper matte regulus separated with slag, reduces slag cupric; The 2nd, minimizing is washed away barricade, extends the work-ing life of barricade.
(2) copper matte regulus generating flow into blowing district from barricade bottom, by being located at bottom, smelting zone, becomes the spray gun at 35 ° and 40 ° angles with vertical line, and the oxygen-rich air of sending into 20%-40% blows, and copper matte regulus is blown into blister copper and slag.Bottom blowing blowing is to carry out the in the situation that of blister copper, copper matte regulus, slag three-phase coexistence, and oxygen is introduced into blister copper layer, and blister copper oxygen gesture is the highest, is mixed in first oxidized removing of the elements such as sulphur in blister copper, arsenic, antimony, bismuth, obtains the higher blister copper of quality.Then oxygen by blister copper as carrier, with Cu 2cu in O, CuO form and copper matte regulus 2s, CuS reaction generates Cu, SO 2, part is reacted generation FeO, SO with the FeS in copper matte regulus 2and Cu.Blowing district temperature is at 1200-1250 ℃, and temperature can be by regulating concentration or the unit time oxygen-supplying amount of the oxygen of oxygen-rich air to realize.When sending oxygen blowing, from being located at the flux mouth on blowing top, district, by slag making required amount, add continuously quartzite, make iron white residue.Near the bottom, blowing district of barricade between blowing district and fining cell, no longer establish spray gun and send oxygen to stir, the blister copper that slag is mingled with copper matte regulus layer have certain sedimentation time from slag with separated copper matte regulus, and enter blister copper layer, reach the object of reduction slag cupric.
(3) blister copper generating flow into fining cell from barricade bottom, bottom blowing refining is to carry out the in the situation that of blister copper, anode copper and slag three-phase coexistence, first at oxidation stage, bottom spray gun passes into the oxygen-rich air of 20%-30%, oxygen is introduced into anode copper, anode copper oxygen gesture is the highest, the oxidized generation of copper Cu 2o, then with Cu 2o is that carrier reacts with the impurity in blister copper, and oxidized impurity formation oxide compound enters slag and is removed mutually.At reduction phase, pass into the reducing gas such as Sweet natural gas or oil liquefied gas and make reductive agent and will be dissolved in oxygen in copper and remove.Fining cell temperature is generally at 1100-1250 ℃, and temperature can be by regulating the content of oxygen in oxygen-rich air and regulating from auxiliary burning nozzle oil spout.Near putting copper mouth section, no longer establish spray gun, can make anode copper have certain settling time to separate from blister copper and slag, and enter anode copper layer, thereby reduce slag cupric.
(4) the higher copper water of purity that above-mentioned fining cell generates is emitted from putting copper mouth interruption, by chute, delivers to anode casting machine, casts copper anode plate and sends to electrorefining.The slag that San Ge district generates is emitted by slag notch overflow continuously from barricade top area, sends to the ore dressing of slag dressing-works after slow cooling, and the slag copper ore concentrates of selecting returns in stove and continues to smelt, and mine tailing can fully utilize by making cement factory raw material, realizes without waste sludge discharge.San Ge district produces contains SO 2high-temperature flue gas through floss hole, arrive waste heat boiler cooling and gather dust, output saturation steam carries out cogeneration, the flue gas after cooling is sent to desulfurization relieving haperacidity again after dust cleaning.

Claims (9)

1. step copper smelting device and a technique thereof, its device comprises body of heater, charging opening, floss hole, burner, slag notch, puts copper mouth, spray gun, flux mouth, it is characterized in that by smelting zone, blowing district, fining cell three parts, being formed in body of heater, between by barricade, separated; Body of heater is rotatable horizontal cylindrical furnace, and shell is steel plate, inner lining refractory, and body of heater is by two idler stands on basis, and one of them carrying roller one end is furnished with motor, geartransmission, body of heater can be arranged to rotate along axle center; The bottom in each district is separately installed with two rows and is staggeredly arranged, keeps at a certain distance away, intersects in opposite directions at an angle to the spray gun of furnace injection oxygen-rich air or Sweet natural gas; Charging opening is located at top, smelting zone, and floss hole and flux mouth are located at top, blowing district, and main burner, auxiliary burner are located at respectively on the headwall near smelting zone and fining cell both sides; Slag notch and put copper mouth all on the headwall of auxiliary burner one side.
2. step copper smelting device and a technique thereof according to claim 1, is characterized in that the spray gun of smelting zone becomes 0 °-22 ° with vertical line, and the spray gun in blowing district becomes 30 °-45 ° ,-70 ° at 45 ° of spray gun and the vertical line of fining cell with vertical line.
3. step copper smelting device and a technique thereof according to claim 1, is characterized in that smelting zone, blowing district, fining cell length are respectively: 15m, 8m, 8m, and stove internal diameter is 4.8m; The bottom of smelting zone installs respectively that two rows are staggeredly arranged, interval 1.1m, become 9 spray guns at 17 ° and 22 ° angles with vertical line; The bottom in blowing district installs respectively that two rows are staggeredly arranged, interval 1.1m, become 5 spray guns at 35 ° and 40 ° angles with vertical line; In the bottom of fining cell, install respectively that two rows are staggeredly arranged, 5 spray guns at interval 1.1m, and 50 ° angles at 45 ° with vertical line.
4. step copper smelting device and a technique thereof, is characterized in that processing step is:
(1) by polymetallic ore with solvent and after returning dirt and mixing, by the charging opening on top, smelting zone, joined in stove, by spray gun from bottom to top, the oxygen-rich air of injecting 65%-78% is at a high speed in melt, fully mix contact, carry out pyritic smelting, generate copper matte regulus and smelting slag, copper matte regulus is containing more than Cu70%; Temperature is controlled at 1180-1250 ℃;
(2) copper matte regulus generating flows to blowing district from barricade bottom, and the oxygen-rich air of sending into 20%-40% by spray gun blows, and copper matte regulus is blown into blister copper and slag; Blowing district temperature is controlled at 1200-1250 ℃;
(3) blister copper generating flow into fining cell from barricade bottom, and oxygen-rich air and the Sweet natural gas of by spray gun, sending into 20%-30% carry out refining, and blister refining is become to the anode copper that purity is higher, and fining cell temperature is generally at 1100-1200 ℃;
(4) the higher anode copper of purity that above-mentioned fining cell generates is emitted from putting copper mouth interruption, by chute, deliver to anode casting machine, cast copper anode plate and send to electrorefining, the slag generating is emitted continuously from the slag notch overflow of barricade top area, after slow cooling, send to the ore dressing of slag dressing-works, the slag copper ore concentrates of selecting returns in stove and continues to smelt, and mine tailing can fully utilize by making cement factory raw material, realization is without waste sludge discharge, generation contain SO 2high-temperature flue gas through floss hole, arrive waste heat boiler cooling and gather dust, output saturation steam carries out cogeneration, the flue gas after cooling is sent to desulfurization relieving haperacidity again after dust cleaning.
5. step copper smelting device and a technique thereof according to claim 4, is characterized in that in step (1): the temperature of smelting zone is by regulating the oxygen of oxygen-rich air, empty ratio or unit time oxygen-supplying amount to realize.
6. step copper smelting device and a technique thereof according to claim 4, is characterized in that in step (1): the matte grade of smelting zone is by controlling oxygen material than realizing.
7. step copper smelting device and a technique thereof according to claim 4, is characterized in that in step (1): in smelting zone, near barricade section, no longer send oxygen to stir, make the abundant sedimentation of copper matte regulus, be easy to copper matte regulus separated with slag, reduce slag cupric.
8. step copper smelting device and a technique thereof according to claim 4, is characterized in that in step (2): blowing district temperature is by regulating concentration or the unit time oxygen-supplying amount of the oxygen of oxygen-rich air to realize; When sending oxygen blowing, from being located at the flux mouth on blowing top, district, by slag making required amount, add continuously quartzite, make iron white residue; Near the bottom, blowing district of barricade between blowing district and fining cell, no longer establish spray gun and send oxygen to stir, the blister copper that slag and copper matte regulus layer are mingled with fully precipitates, and from slag, with separated copper matte regulus, and enters blister copper layer.
9. step copper smelting device and a technique thereof according to claim 4, it is characterized in that in step (3): bottom blowing refining is to carry out the in the situation that of blister copper, anode copper and slag three-phase coexistence, at oxidation stage, bottom spray gun passes into oxygen-rich air, at reduction phase, pass into Sweet natural gas and make reductive agent and will be dissolved in oxygen in copper and remove; Temperature can be by regulating the content of oxygen in oxygen-rich air and regulating from auxiliary burning nozzle oil spout; Near putting copper mouth section, no longer establish spray gun, make the abundant sedimentation of anode copper, from blister copper and slag, separate, and enter anode copper layer, reduce slag cupric.
CN201410156737.2A 2014-04-18 2014-04-18 One step copper metallurgy technique and device thereof Active CN103952571B (en)

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CN104988332A (en) * 2015-07-06 2015-10-21 中南大学 One-step copper smelting process and device
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CN106148723A (en) * 2015-05-26 2016-11-23 天津闪速炼铁技术有限公司 The device and method of noble metal in trapping low grade noble metal raw material
CN107287442A (en) * 2017-05-23 2017-10-24 西北矿冶研究院 A kind of continuous copper smelting apparatus and copper smelting method
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
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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
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CN110252301A (en) * 2019-06-17 2019-09-20 铜陵国传电子材料科技有限公司 A kind of preparation process of ternary copper powder catalyst
CN110885933A (en) * 2019-11-15 2020-03-17 北京科技大学 Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing
WO2020082726A1 (en) * 2018-10-26 2020-04-30 中国恩菲工程技术有限公司 Bottom-blowing refining furnace and use thereof
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CN106148723A (en) * 2015-05-26 2016-11-23 天津闪速炼铁技术有限公司 The device and method of noble metal in trapping low grade noble metal raw material
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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
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CN110885933A (en) * 2019-11-15 2020-03-17 北京科技大学 Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing
CN110885933B (en) * 2019-11-15 2021-07-16 北京科技大学 Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing
CN112746184A (en) * 2021-04-06 2021-05-04 中国恩菲工程技术有限公司 Copper smelting furnace, copper smelting equipment and copper smelting method
CN112746184B (en) * 2021-04-06 2021-07-06 中国恩菲工程技术有限公司 Copper smelting furnace, copper smelting equipment and copper smelting method

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