CN106399713A - Oxygen enrichment bottom blowing copper smelting process - Google Patents
Oxygen enrichment bottom blowing copper smelting process Download PDFInfo
- Publication number
- CN106399713A CN106399713A CN201610422606.3A CN201610422606A CN106399713A CN 106399713 A CN106399713 A CN 106399713A CN 201610422606 A CN201610422606 A CN 201610422606A CN 106399713 A CN106399713 A CN 106399713A
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- CN
- China
- Prior art keywords
- copper
- slag
- oxygen
- converter
- blowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0041—Bath smelting or converting in converters
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses an oxygen enrichment bottom blowing copper smelting process. The oxygen enrichment bottom blowing copper smelting process comprises the following steps that firstly, lump coal, quartz sand, mixed copper concentrate, slag concentrate and smoke are transported to a concentrate warehouse to be stored and transported to a bottom blowing furnace after being mixed in a mixing warehouse; secondly, oxygen and compressed air are blown into the bottom blowing furnace, the raw materials in the first step are quickly subjected to heating, dehydrating, smelting, oxidizing, copper sulphate preparing and slag preparing in a smelting pool, and copper sulphate is heated up through chutes to become matte and then added into a converter to continue to be blown into blister copper; and thirdly, after the copper sulphate is added into the converter through a converter opening, blowing-in smelting is carried out. According to the oxygen enrichment bottom blowing copper smelting process, the compressed air and the oxygen are blown into the bottom blowing furnace and the converter, the combustion efficiency is improved, waste heat of smoke is recycled through a waste heat boiler, then, the smoke is fed into a Cottrell for dust collection and then conveyed to an acid making system, the smoke is prevented from polluting air, waste is utilized, and benefits are increased.
Description
Technical field
The present invention relates to a kind of oxygen-enriched bottom-blowing copper metallurgy technique.
Background technology
The pyrometallurgical smelting of China's copper for melting, for industrial existing：Flash Smelting Furnace melts
Refining, Rouyn-Noranda melting, Ausmelt technology, Isa smelting, autogenous smelting, silver method melting
And traditional shaft smelting, electro-smelting, reverberatory smelting etc..Above-mentioned method of smelting removes
Afterwards outside the discharge standard required by three kinds of conventional method difficult to reach environmental protection, other are all to work as
The relatively advanced smelting technology that this life circle adopts.For the blowing of copper, in the world today
More than 90% is all using PS converter, is interrupted operation, the copper matte regulus of melting output need to use copper matte regulus bag
Had bad luck in workshop, caused the low latitude loss of SO2 flue gas, add converter charging and blow
Process, flue gas is difficult to fully seal, and there is different degrees of loss pollution, so that PS converter is blown
The operating environment of refining operation is very poor, and to air born pollution, and melting is less efficient.
Content of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, provides a kind of oxygen-enriched
Bottom blowing copper metallurgy technique.
In order to solve above-mentioned technical problem, the invention provides following technical scheme：
A kind of present invention oxygen-enriched bottom-blowing copper metallurgy technique, it comprises the following steps：
S1, lump coal, quartz sand, copper bulk concentrate, slag concentrate and flue dust are transported to concentrate storehouse
Storage, and it is delivered to bottom convertor after batch bin mixing；
S2, bottom convertor blast oxygen and compressed air, and the raw material of step S1 is rapid in molten bath
Complete to heat, be dehydrated, melt, aoxidizing, making copper matte regulus and slagging process, copper matte regulus slips into through chute
Add in converter after matte bag, continue to blow into blister copper；Slag overflow interruption is released, and slips through chute
To cinder ladle, and after being transported to slag slow cooling field slow cooling, workshop ore dressing is selected to process through slag, slag concentrate send
Concentrate storehouse returns bottom convertor after storing up；Bottom blowing kiln gas, through waste heat boiler recovery waste heat, is re-fed into
Cottrell send acid making system after gathering dust；
S3, copper matte regulus are added after converter by fire door, carry out air-supply blowing；Bessemerize and make for interruption
Industry, point slag-formation period and copper making period；Slag-formation period, blasts the oxygen-enriched of concentration about 21～25% from air port
Air, after slag making reaction terminates, out-of-blast, slag is poured in cinder ladle from fire door, is transported to slag
The slow cooling of slow cooling field, selects workshop ore dressing to process through slag, and slag concentrate returns bottom blowing after sending concentrate storehouse to store up
Stove；In copper making period, the copper-nickel alloy sulfonium stayed in stove is reacted with the oxygen of the in the air blasting, and generates product
The blister copper for 98.5% for the position；The blister copper of output is poured into and is entered casting process in blister copper bag.
Further, in described step S3, described converter is provided with two, swaps work
Industry.
Further, the side of described converter is provided with blister copper pig moulding machine.
Further, in step S3, the furnace roof of every converter be provided with flux intermediate bin and
Electric vibrating feeder.
Further, in step S3, converter air-supply process is using mechanical tuyere puncher cleaning wind
Eye.
Further, in step S3, every converter is equipped with watercooled hood and ring exhaust fume collecting hood,
Described watercooled hood imports the flue gas of converter output after recovery waste heat in waste heat boiler, enters electricity
Acid making system is sent after dust-precipitator dedusting；Ring exhaust fume collecting hood is divided into rotating part and standing part.
Further, in step S2, described bottom convertor each copper time 0.8h, go out every time
Copper matte regulus amount 81.8t, puts copper interval time 3.54h every time.
Further, in step S2, described bottom convertor adds from three charge doors on stove top
Enter raw material, oxygen and compressed air are blasted by the oxygen rifle of stove side lower part.
The beneficial effect that the present invention is reached is：
(1) bottom convertor blasts compressed air and oxygen, so that molten bath is formed and is stirred vigorously, is formed
Good heat transfer and mass transfer condition, oxidation reaction and slag making reaction fierceness are carried out, and reaction discharges
A large amount of heat energy, make furnace charge rapid melting；Bottom blowing kiln gas is through waste heat boiler recovery waste heat, then send
Enter after cottrell gathers dust and send acid making system, it is to avoid contaminated air, and by twice laid, increase
Benefit；
(2) slag adopts ore dressing to process, and copper total recovery is high, and slag all comprehensively utilizes, real
Now no waste residue is smelted；
(3) using from stream configuration, it is to avoid copper matte regulus is had bad luck, and plant layout is compact, enables
Clean manufacturing；
(4) blowing workshop section swaps operation using the converter of two 80t, by converting process
Divide slag-formation period and copper making period；Setting blister copper pig moulding machine avoids the generation of flue dust.
Brief description
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes one of specification
Point, it is used for explaining the present invention together with embodiments of the present invention, do not constitute the limit to the present invention
System.In the accompanying drawings：
Fig. 1 is the flowage structure schematic diagram of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated it will be appreciated that herein
Described preferred embodiment is merely to illustrate and explains the present invention, is not used to limit this
Bright.
As shown in figure 1, a kind of present invention oxygen-enriched bottom-blowing copper metallurgy technique, it comprises the following steps：
S1, lump coal, quartz sand, copper bulk concentrate, slag concentrate and flue dust are transported to concentrate storehouse
Storage, and it is delivered to bottom convertor after batch bin mixing；
S2, bottom blowing furnace section：
Bottom convertor production process is to work continuously.Furnace charge adds from three charge doors on stove top
Enter, be involved in rapidly in the melt of rolling, oxygen and pressure are blasted by the oxygen rifle of stove side lower part
Contracting air, makes molten bath be formed and is stirred vigorously, and forms good heat transfer and mass transfer condition, and oxidation is anti-
Should carry out with slag making reaction fierceness, reaction discharges a large amount of heat energy, makes furnace charge rapid melting.Whole
Individual stove is reaction zone, and lower furnace portion is melt, and raw material quickly completes heating in molten bath, takes off
Water, melt, aoxidize, making the fusion process such as copper matte regulus and slag making, molten state copper matte regulus and slag are because close
Degree difference and in molten bath be layered.Copper matte regulus layer is in melt bottom, and slag blanket is upper copper matte regulus layer
Portion.Copper matte regulus uses clay gun machine perforating to release, and slips to 6m through chute3Matte bag, then through metallurgical bridge
Formula crane adds in converter, continues to blow into blister copper.Slag overflow interruption is released, and slips through chute
To cinder ladle, it is transported to after slag slow cooling field slow cooling using flat bogie, select workshop ore dressing to process through slag,
Slag concentrate returns bottom convertor after sending concentrate storehouse to store up.
According to converter operation system, bottom convertor each copper time 0.8h, go out copper matte regulus amount every time
81.8t, puts copper interval time 3.54h every time.Under normal production scenarios, bottom convertor is per hour
Produce copper matte regulus amount 18.79t, quantity of slag 53.87t.Put in the copper time in this 0.8h, bottom convertor is every
10min releases copper matte regulus 16.8t, output copper matte regulus 3.14t, adds up to every 10min to reduce copper matte regulus
13.66t, i.e. 2.7m3(hot copper matte regulus ratio refetches 5t/m3)；Bottom convertor every 10min output slag
8.97t, i.e. 2.72m3(warm sludge ratio refetches 3.3t/m3), the slag of the copper matte regulus of minimizing and increase
Volume remains basically stable, and therefore, puts liquid level in stove during copper and substantially maintains 1200mm, not slagging,
Slagging again after putting copper and terminating.Put after copper terminates, copper matte regulus layer height 600mm in stove, clay gun machine
Block and put copper mouth, open overflow slag tap, after 3.54h, in stove, copper matte regulus layer height reaches 850mm,
Put copper operation more next time.
Bottom blowing kiln gas, through waste heat boiler recovery waste heat, is re-fed into existing 60m2Cottrell is received
Acid making system is sent after dirt.
S3, blowing workshop section：
This transformation blowing workshop section disables existing two 40t converters, increases two dimensions newly
For the converter of ￠ 3.68 × 10m, single stove copper matte regulus charge weight 80t, existing two in blowing factory building
50t metallurgical bridge crane, for converter charging and discharging.Two converter thermal-states carry out stove exchange
Operation.Copper matte regulus is added after converter by fire door, carries out air-supply blowing.Bessemerize as being interrupted operation,
Divide slag-formation period and copper making period.Single stove duty cycle is 8.67 hours, and two converters need daily altogether
Blow 5.54 stoves, and blowing time ratio is 78.38%.Slag-formation period, blasts concentration from air port and is about 21～25%
Oxygen-enriched air, slag making reaction terminate after, out-of-blast, slag is poured into 6m from fire door3Slag
In bag, it is hung on flat bogie (reusing) by metallurgical bridge crane, be transported to slag slow cooling field and delay
Cold, select workshop ore dressing to process through slag, slag concentrate returns bottom convertor after sending concentrate storehouse to store up.Making
The copper phase, the copper-nickel alloy sulfonium stayed in stove is reacted with the oxygen of the in the air blasting, and generating grade is 98.5%
Blister copper.The blister copper of output pours 3m into3Casting process is entered in blister copper bag.For avoiding blister copper to pour
Flue gas inorganization loss during casting, increases a flat bogie formula blister copper pig moulding machine newly, is positioned over 2#
Converter west side, ingot casting ability 30t/h.
Every converter top equipped with flux intermediate bin and electric vibrating feeder, flux after metering,
Load ship type feeder, then sling in addition flux intermediate bin through metallurgical bridge crane.Converter
When needing to add flux, feed chute stretches in watercooled hood, and electric vibrating feeder starts, and will melt
Agent adds feed chute to slip to above fire door entrance converter.Involucrum uses ship type feeder by fire door
Add.Converter air-supply process is utilized using the mechanical tuyere puncher cleaning eye of wind, mechanical tuyere puncher
Existing equipment.
Every converter is equipped with a watercooled hood and a ring exhaust fume collecting hood.Watercooled hood is using circulation
Water forces cooling, and recirculated water is waste heat boiler pure water.Watercooled hood is by the flue gas of converter output
After importing recovery waste heat in waste heat boiler, enter existing 100m2Relieving haperacidity is sent after cottrell dedusting
System.Ring exhaust fume collecting hood is divided into rotating part and standing part, when converter needs discharging, rotating part
Divide and first open, steamed stuffed bun is put into behind position by crane, rotating part is closed, watercooled hood movable part
Rise, body of heater verts batch turning, now in fire door and steamed stuffed bun, the flue gas of effusion is received by ring exhaust fume collecting hood
Collect and be delivered to ring collecting system；During converter charging, rotating part is first opened, and steamed stuffed bun is hung by crane
To stokehold, watercooled hood movable part rises, and body of heater verts, and matte bag is leaned on by crane further
Nearly fire door batch turning, the flue gas that fire door can be overflowed by this process middle ring exhaust fume collecting hood upper fixing portion
Collect and send ring collecting system.
Finally it should be noted that：The foregoing is only the preferred embodiments of the present invention, not
For limiting the present invention, although being described in detail to the present invention with reference to the foregoing embodiments,
For a person skilled in the art, it still can be to the skill described in foregoing embodiments
Art scheme is modified, or carries out equivalent to wherein some technical characteristics.All at this
Within bright spirit and principle, any modification, equivalent substitution and improvement made etc., all should wrap
It is contained within protection scope of the present invention.
Claims (8)
1. a kind of oxygen-enriched bottom-blowing copper metallurgy technique is it is characterised in that comprise the following steps：
S1, lump coal, quartz sand, copper bulk concentrate, slag concentrate and flue dust are transported to concentrate storehouse
Storage, and it is delivered to bottom convertor after batch bin mixing；
S2, bottom convertor blast oxygen and compressed air, and the raw material of step S1 is rapid in molten bath
Complete to heat, be dehydrated, melt, aoxidizing, making copper matte regulus and slagging process, copper matte regulus slips into through chute
Add in converter after matte bag, continue to blow into blister copper；Slag overflow interruption is released, and slips through chute
To cinder ladle, and after being transported to slag slow cooling field slow cooling, workshop ore dressing is selected to process through slag, slag concentrate send
Concentrate storehouse returns bottom convertor after storing up；Bottom blowing kiln gas, through waste heat boiler recovery waste heat, is re-fed into
Cottrell send acid making system after gathering dust；
S3, copper matte regulus are added after converter by fire door, carry out air-supply blowing；Bessemerize and make for interruption
Industry, point slag-formation period and copper making period；Slag-formation period, blasts the oxygen-enriched of concentration about 21～25% from air port
Air, after slag making reaction terminates, out-of-blast, slag is poured in cinder ladle from fire door, is transported to slag
The slow cooling of slow cooling field, selects workshop ore dressing to process through slag, and slag concentrate returns bottom blowing after sending concentrate storehouse to store up
Stove；In copper making period, the copper-nickel alloy sulfonium stayed in stove is reacted with the oxygen of the in the air blasting, and generates product
The blister copper for 98.5% for the position；The blister copper of output is poured into and is entered casting process in blister copper bag.
2. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In described step S3, described converter is provided with two, swaps operation.
3. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
The side of described converter is provided with blister copper pig moulding machine.
4. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In step S3, the furnace roof of every converter is provided with flux intermediate bin and electric vibrating feeder.
5. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In step S3, converter air-supply process is using the mechanical tuyere puncher cleaning eye of wind.
6. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In step S3, every converter is equipped with watercooled hood and ring exhaust fume collecting hood, described watercooled hood
The flue gas of converter output is imported after recovery waste heat in waste heat boiler, after entering cottrell dedusting
Send acid making system；Ring exhaust fume collecting hood is divided into rotating part and standing part.
7. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In step S2, described bottom convertor each copper time 0.8h, go out copper matte regulus amount 81.8t every time,
Put copper interval time 3.54h every time.
8. a kind of oxygen-enriched bottom-blowing copper metallurgy technique according to claim 1 it is characterised in that
In step S2, described bottom convertor adds raw material from three charge doors on stove top, by stove
The oxygen rifle of sub- side lower part blasts oxygen and compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422606.3A CN106399713A (en) | 2016-06-15 | 2016-06-15 | Oxygen enrichment bottom blowing copper smelting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610422606.3A CN106399713A (en) | 2016-06-15 | 2016-06-15 | Oxygen enrichment bottom blowing copper smelting process |
Publications (1)
| Publication Number | Publication Date |
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| CN106399713A true CN106399713A (en) | 2017-02-15 |
Family
ID=58006487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610422606.3A Pending CN106399713A (en) | 2016-06-15 | 2016-06-15 | Oxygen enrichment bottom blowing copper smelting process |
Country Status (1)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460340A (en) * | 2017-07-31 | 2017-12-12 | 河南豫光金铅股份有限公司 | A kind of quick blow-in method of copper bottom-blown smelting stove |
| CN107806767A (en) * | 2017-10-10 | 2018-03-16 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Treatment of slag and its movement system |
| CN107916337A (en) * | 2017-11-27 | 2018-04-17 | 中国恩菲工程技术有限公司 | The processing system of silver preparation concentrate |
| CN108707762A (en) * | 2018-05-02 | 2018-10-26 | 昆明理工大学 | A method of removing arsenic antimony during copper matte regulus is bessemerized |
| CN110284007A (en) * | 2019-07-30 | 2019-09-27 | 易门铜业有限公司 | A kind of method raw material mixture during Copper making and smelted |
| CN111455194A (en) * | 2020-04-24 | 2020-07-28 | 金川集团股份有限公司 | Method for reducing copper content in PS converter slag |
| CN112629276A (en) * | 2021-01-13 | 2021-04-09 | 易门铜业有限公司 | Multi-grade waste heat gradient upgrading power generation system and method |
| CN113008046A (en) * | 2021-03-10 | 2021-06-22 | 易门铜业有限公司 | Accurate closed water-cooling heat exchange method |
| CN113046571A (en) * | 2021-03-08 | 2021-06-29 | 易门铜业有限公司 | Smelting system and method for reducing generation of magnetic iron in copper ore smelting process |
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| CN105238938A (en) * | 2015-11-03 | 2016-01-13 | 赤峰金峰冶金技术发展有限公司 | Three continuous furnace technology for continuous production of anode copper with copper concentrate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460340A (en) * | 2017-07-31 | 2017-12-12 | 河南豫光金铅股份有限公司 | A kind of quick blow-in method of copper bottom-blown smelting stove |
| CN107806767A (en) * | 2017-10-10 | 2018-03-16 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Treatment of slag and its movement system |
| CN107806767B (en) * | 2017-10-10 | 2020-03-17 | 铜陵有色金属集团股份有限公司 | Slag treatment method and transfer system thereof |
| CN107916337A (en) * | 2017-11-27 | 2018-04-17 | 中国恩菲工程技术有限公司 | The processing system of silver preparation concentrate |
| CN108707762A (en) * | 2018-05-02 | 2018-10-26 | 昆明理工大学 | A method of removing arsenic antimony during copper matte regulus is bessemerized |
| CN110284007A (en) * | 2019-07-30 | 2019-09-27 | 易门铜业有限公司 | A kind of method raw material mixture during Copper making and smelted |
| CN111455194A (en) * | 2020-04-24 | 2020-07-28 | 金川集团股份有限公司 | Method for reducing copper content in PS converter slag |
| CN112629276A (en) * | 2021-01-13 | 2021-04-09 | 易门铜业有限公司 | Multi-grade waste heat gradient upgrading power generation system and method |
| CN113046571A (en) * | 2021-03-08 | 2021-06-29 | 易门铜业有限公司 | Smelting system and method for reducing generation of magnetic iron in copper ore smelting process |
| CN113008046A (en) * | 2021-03-10 | 2021-06-22 | 易门铜业有限公司 | Accurate closed water-cooling heat exchange method |
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