CN110527781A - A kind of cinder ladle raw material processing method suitable for Copper making working condition - Google Patents
A kind of cinder ladle raw material processing method suitable for Copper making working condition Download PDFInfo
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- CN110527781A CN110527781A CN201910721556.2A CN201910721556A CN110527781A CN 110527781 A CN110527781 A CN 110527781A CN 201910721556 A CN201910721556 A CN 201910721556A CN 110527781 A CN110527781 A CN 110527781A
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- CN
- China
- Prior art keywords
- cinder ladle
- raw material
- working condition
- copper making
- processing method
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, it is controlled by the processing to cinder ladle raw material, to improve the flexibility of cinder ladle production raw material, so that cinder ladle be effectively relieved in the case where long-time is by high temperature action, the problem of the crackle being easy to produce.A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, it is refined by using electric furnace steel making, LF furnace, the content of harmful element and residual elements can be effectively reduced, improve the degree of purity of molten steel, the wherein content < 0.020% of P, S is lower than national standard≤0.040%.The crackle tendency under cinder ladle hot conditions can be effectively reduced.Molten steel carries out Metamorphism treatment (rare earth re), the physical synthesis performance that crystal grain improves material can then be refined, single packet casting, live thermometric before casting, pouring temperature can control within the scope of ± 3 DEG C that technique requires, the relatively uniform exquisiteness of the crystal grain of cinder ladle can effectively improve its physical property.
Description
Technical field
The present invention relates to industrial smelting waste storing unit, more particularly, to a kind of suitable for Copper making working condition
Cinder ladle raw material processing method.
Background technique
With industrialized production copper demand sharp increase, the copper resource supply in China is becoming tight day, metallurgy of copper industry
Increasingly pay attention to the dilution processing of copper slag.In order to further decrease the copper grade of waste, in the past 10 years, the country is floating using mill
Method realizes that the number of the enterprise of copper slag slag choosing is increasing year by year, and slag selects factory rules and regulations mould constantly to expand, and cinder ladle is using more and more.
In cinder ladle use process, slagging enters when wrapping transient heating to 700 DEG C or more, water quenching again when spraying cooling, slag
Packet well damage, the maintenance cost of annual each cinder ladle is at 10,000 yuan or more, and service life is usually no more than 3 years.
The cinder ladle cooling means applied at present is to be referred to as high temperature sludge, direct emission using by high-temperature liquid furnace slag
Enter cinder ladle, the cooling scene of slag is transported by cinder ladle vehicle after piling, natural cooling 12 hours, meets slag retarded cooling process requirement.Then
The artificial mode for opening shower water is 48 hours cooling, guarantees the turnover rate of cinder ladle.If cooling velocity is too fast before liquid slag solidifies,
Sulphided state or metallic state copper particle all can not be agglomerated and be grown up in slag, it is difficult to by ore grinding separation and flotation, reduce copper
The rate of recovery.All 0.35% or so, a large amount of copper resource is lost the cupric of usual slag tailing with tailing.
On the one hand, cooling execute-in-place environment very severe, water encounter high-temperature fusant, rapid vaporization, a large amount of water in scene
Mist influences sight, and slag slow cooling per ton about consumes 0.5 ton of water.This not only wastes the sensible heat of slag, consumes a large amount of water conservancy
Resource, and there are the possibility of high temperature sludge " blowing out (water encounters high temperature sludge rapid vaporization, the big energy of abrupt release) " for operation, sternly
The person, equipment safety are threatened again.
On the other hand, smelting furnace needs to melt out the copper ashes come and separates during melting, liquid copper ashes point
It separates out after coming, directly pours into cinder ladle, and slowly cooled down in cinder ladle；And since long-time is influenced by high temperature, the bottom of cinder ladle
It is easy to produce deformation, crackle, wears phenomena such as bottom, this phenomenon causes the service life of cinder ladle not grown, to cause entirely to produce
Higher cost.
Therefore, how a kind of cinder ladle is provided, realizes the slow cooling of cinder ladle, reduces deformation, the crackle of cinder ladle, improves making for cinder ladle
With the service life, it is a technical problem that technical personnel in the field need to solve at present.
Summary of the invention
The present invention provides a kind of cinder ladle raw material processing method suitable for Copper making working condition, to solve upper existing cinder ladle
It is easy to produce deformation under the influence of high temperature and wears the low technical problem for causing the service life not grow.
According to an aspect of the present invention, a kind of cinder ladle raw material processing method suitable for Copper making working condition is provided,
The following steps are included:
Step S1, by steel scrap, secondary investment is powered into electric furnace and smelts 900min to the heat of oxidation, interval is put into batches in three batches
Lime block；
Step S2 carries out automatic stream Slag treatment to the thick experienced molten steel in electric furnace according to electric furnace internal oxidition boiling situation；
The thick experienced molten steel obtained in step S2 is directed into LF refining furnace by step S3, is powered and is smelted 10min, is added de-
Oxygen agent carries out deoxidation treatment；
Step S4 in the LF refining furnace after deoxidation treatment, adjusts smelting temperature, and rare earth alloy is added, and it is described plus
Entering rare earth alloy is 1.5kg/ tons of steel, smelts 40min；
Step S5 carries out soft blow 10-15min to the molten steel that step S4 is obtained, to obtain refined molten steel.
On the basis of above scheme preferably, in the step S1,500-800kg, and every batch of is added in the lime block every time
The minor tick time is greater than 8min.
On the basis of above scheme preferably, in the step S2, the quantity of slag is controlled in 5%-7%, and the electric furnace in electric furnace
Middle tapping P≤0.015%.
On the basis of above scheme preferably, the deoxidier in the step S3 is silicon carbide, ferrosilicon powder, calcium carbide and aluminum shot
Mixture.
On the basis of above scheme preferably, the deoxidation treatment time is less than 15min in the step S3, and when deoxidation treatment,
FeO < 1%, white slag retention time > 30min.
The present invention also provides a kind of cinder ladles suitable for Copper making working condition, including what is obtained in step S4 as described above
Refined molten steel carries out ontology made of single packet casting, and the shape of the ontology is in the inverted cone of bottom rounding off, and described
The top two opposite sides of ontology are equipped with the trunnion of integrated cast molding, and the bottom of the ontology is uniformly distributed formula equipped at least six
Supporting leg.
On the basis of above scheme preferably, between the trunnion and the ontology be equipped with multiple ribs, the supporting leg with
Multiple ribs are equipped between the ontology.
The present invention also provides a kind of cinder ladle raw material processing methods suitable for Copper making working condition, will walk as described above
The refined molten steel obtained in rapid S4 carries out single packet casting, to obtain a kind of slag suitable for Copper making working condition as described above
Packet.
On the basis of above scheme preferably, in casting, chill is equipped at the outer edge surface of the big end of the ontology, and in institute
Two stated on ontology are equipped with soldering iron ore in sand form core, the bottom outer of the ontology with the periphery of the trunnion in vertical direction
Face is equipped with insulated feeder.
A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, by cinder ladle raw material
Processing is controlled, to improve the ability of the thermal deformation resistant of cinder ladle production raw material, thus cinder ladle is effectively relieved for a long time
Under by high temperature action, the problem of the crackle being easy to produce.
A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, by using electric furnace steel making,
The refining of LF furnace, can be effectively reduced the content of harmful element and residual elements, improve the degree of purity of molten steel, wherein the content of P, S
< 0.020% is lower than national standard≤0.040%.The crackle tendency under cinder ladle hot conditions can be effectively reduced.Molten steel into
Row Metamorphism treatment (rare earth re) can then refine the physical synthesis performance that crystal grain improves material, and single packet casting, scene is surveyed before being poured
Temperature, pouring temperature can control within the scope of ± 2 DEG C that technique requires, and the relatively uniform exquisiteness of the crystal grain of cinder ladle can be effective
Improve its physical property.
The present invention also provides a kind of methods using above-mentioned cinder ladle raw material processing cinder ladle, by cinder ladle casting process
In, chill and soldering iron ore in sand form core are set, to the shrinkage cavity region that cinder ladle is easy to produce in casting condensation process, carry out amount of localized heat
Adjusting processing, to reduce the area of shrinkage cavity shrinkage porosity, improves the service life of cinder ladle.
Detailed description of the invention
Fig. 1 is a kind of cinder ladle raw material processing method flow diagram suitable for Copper making working condition of the invention；
Fig. 2 is the structure chart of cinder ladle of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Refering to Figure 1, being provided a kind of suitable for Copper making operating condition the present invention provides according to an aspect of the present invention
The cinder ladle raw material processing method of condition, comprising the following steps:
Step S1, by steel scrap, secondary investment is powered into electric furnace and smelts 900min to the heat of oxidation, interval is put into batches in three batches
Lime block, wherein lime block is added 500-800kg every time, and every batch of interval time is greater than 8min, by using lime block with
Molten steel after thawing carries out well-mixed effect, and dicalcium silicate in steel slag is absorbed calcium oxide and generates tricalcium silicate, slag
It is added and the higher iron phase solid solution of activity is promoted to generate, to improve steel slag hydraulically active, while reducing in steel slag and aoxidizing
Iron content.It is bad to steel to eliminate steel slag stability so that free calcium oxide in steel slag is fully absorbed for the heat preservation of grace time
The influence that slag uses.
Step S2 carries out automatic stream Slag treatment to the thick experienced molten steel in electric furnace, certainly according to electric furnace internal oxidition boiling situation
When dynamic stream Slag treatment, it need to ensure that quantity of slag control is in 5%-7% in electric furnace, and P≤0.015% of tapping in electric furnace, to improve steel
Flexibility reduces crackle tendency.
The thick steel-making water obtained in step S2 is directed into LF refining furnace, is refined by step S3, adds in refining furnace
Enter deoxidier and carries out deoxidation treatment；Be worth explanation when, slightly steel-making water come out of the stove during, need to control turndown speed, it is ensured that
3-5 tons of steel amount of stream, and lime 500-800kg is added in tapping process, it is rolled using tapping steel stream and ladle bottom blowing argon gas and mixes punching
Desulfurization.
Preferably, in deoxidation process, in order to ensure deoxidation effect, the deoxidation treatment time is less than 15min in step S3,
And when deoxidation treatment, FeO < 1%, white slag retention time > 30min, and the deoxidier in step S3 be silicon carbide, ferrosilicon powder,
The mixture of calcium carbide and aluminum shot.
Step S4 in the LF refining furnace after deoxidation treatment, adjusts smelting temperature, and rare earth alloy is added, and it is described plus
Entering rare earth alloy is 1.5kg/ tons of steel, smelts 40min；
Step S5 carries out soft blow 10-15min to the molten steel that step S4 is obtained, to obtain refined molten steel.
A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, by cinder ladle raw material
Processing is controlled, to improve the ability of the thermal deformation resistant of cinder ladle production raw material, thus cinder ladle is effectively relieved for a long time
Under by high temperature action, the problem of the crackle being easy to produce.
A kind of cinder ladle raw material processing method suitable for Copper making working condition of the invention, by using electric furnace steel making,
The refining of LF furnace, can be effectively reduced the content of harmful element and residual elements, improve the degree of purity of molten steel, wherein the content of P, S
< 0.020% is lower than national standard≤0.040%.The crackle tendency under cinder ladle hot conditions can be effectively reduced.Molten steel into
Row Metamorphism treatment (rare earth re) can then refine the physical synthesis performance that crystal grain improves material, and single packet casting, scene is surveyed before being poured
Temperature, pouring temperature can control within the scope of ± 2 DEG C that technique requires, and the relatively uniform exquisiteness of the crystal grain of cinder ladle can be effective
Improve its physical property.
The present invention also provides a kind of cinder ladles suitable for Copper making working condition, including using the essence as obtained in step S4
It makes steel water and carries out ontology 10 made of single packet casting, the shape of ontology 10 is in the inverted cone of bottom rounding off, and ontology 10
Top two opposite sides be equipped with the trunnion 20 of integrated cast molding, the bottom of ontology 10 is uniformly distributed formula equipped at least six supporting leg
30, specific structure is as shown in Figure 2.
In order to ensure the connection effect between ontology 10 and trunnion 20, ontology 10 and supporting leg 30, the present invention is also in trunnion 20
It is equipped with multiple ribs 40 between ontology 10, multiple ribs 40 are equipped between supporting leg 30 and ontology 10, by using support
The effect of rib 40, the stress that ontology 10 is generated with equalizing and buffering trunnion 20 and supporting leg 30.
Please continue to refer to shown in Fig. 2, the present invention also provides a kind of cinder ladle raw material suitable for Copper making working condition to add
The refined molten steel obtained in step S4 as above is carried out single packet casting by work method, is suitable for Copper making operating condition so that acquisition is as above a kind of
The cinder ladle of condition.By using single packet casting, live thermometric, pouring temperature can control in technique requirement before casting
Within the scope of ± 2 DEG C, the relatively uniform exquisiteness of the crystal grain of cinder ladle can effectively improve its physical property.It is poured compared to two traditional packets
Its physical property of the cinder ladle of note supply has qualitative change, and comprehensive performance significantly improves.
When further in order to alleviate cinder ladle casting in casting, cinder ladle is easy to produce shrinkage cavity shrinkage porosity in cooling procedure
Problem influences cinder ladle service life, and the present invention is equipped with chill also at the outer edge surface of the big end of ontology 10, and on ontology 10
Two are equipped with soldering iron ore in sand form core with the periphery of trunnion 20 in vertical direction, and the bottom outer face of ontology 10 is equipped with heat preservation and emits
Mouthful.
The present invention also provides a kind of methods using above-mentioned cinder ladle raw material processing cinder ladle, by cinder ladle casting process
In, chill and soldering iron ore in sand form core are set, to the shrinkage cavity region that cinder ladle is easy to produce in casting condensation process, carry out amount of localized heat
Adjusting processing, to reduce the area of shrinkage cavity shrinkage porosity, improves the service life of cinder ladle.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (9)
1. a kind of cinder ladle raw material processing method suitable for Copper making working condition, which comprises the following steps:
Step S1, by steel scrap, secondary investment is powered into electric furnace and smelts 900min to the heat of oxidation, interval puts into lime in batches in three batches
Block；
Step S2 carries out automatic stream Slag treatment to the thick experienced molten steel in electric furnace according to electric furnace internal oxidition boiling situation；
The thick experienced molten steel obtained in step S2 is directed into LF refining furnace by step S3, is powered and is smelted 10min, and deoxidier is added
Carry out deoxidation treatment；
Step S4 in the LF refining furnace after deoxidation treatment, adjusts smelting temperature, and rare earth alloy is added, and it is described be added it is dilute
Native alloy is 1.5kg/ tons of steel, smelts 40min；
Step S5 carries out soft blow 10-15min to the molten steel that step S4 is obtained, to obtain refined molten steel.
2. a kind of cinder ladle raw material processing method suitable for Copper making working condition as described in claim 1, which is characterized in that
In the step S1,500-800kg is added in the lime block every time, and every batch of interval time is greater than 8min.
3. a kind of cinder ladle raw material processing method suitable for Copper making working condition as described in claim 1, which is characterized in that
In the step S2, quantity of slag control is in 5%-7% in electric furnace, and P≤0.015% of tapping in the electric furnace.
4. a kind of cinder ladle raw material processing method suitable for Copper making working condition as described in claim 1, which is characterized in that
Deoxidier in the step S3 is the mixture of silicon carbide, ferrosilicon powder, calcium carbide and aluminum shot.
5. a kind of cinder ladle raw material processing method suitable for Copper making working condition as claimed in claim 4, which is characterized in that
The deoxidation treatment time is less than 15min in the step S3, and when deoxidation treatment, FeO < 1%, white slag retention time > 30min.
6. a kind of cinder ladle suitable for Copper making working condition, which is characterized in that including using step S4 as described in the appended claim 1
The refined molten steel of middle acquisition carries out ontology made of single packet casting, and the shape of the ontology is in the inverted cone of bottom rounding off
Body, and the top two opposite sides of the ontology are equipped with the trunnion of integrated cast molding, the bottom of the ontology is uniformly distributed formula and sets
There are at least 6 supporting legs.
7. a kind of cinder ladle suitable for Copper making working condition as claimed in claim 6, which is characterized in that the trunnion with it is described
It is equipped with multiple ribs between ontology, multiple ribs are equipped between the supporting leg and the ontology.
8. a kind of cinder ladle raw material processing method suitable for Copper making working condition, which is characterized in that will be such as institute in claim 1
It states the refined molten steel obtained in step S4 and carries out list packet casting, be suitable for Copper making work to obtain one kind as claimed in claim 6
The cinder ladle of condition condition.
9. a kind of cinder ladle raw material processing method suitable for Copper making working condition as claimed in claim 8, which is characterized in that
In casting, it is equipped with chill at the outer edge surface of the big end of ontology, and two on the body and trunnion are in vertical direction
Periphery is equipped with soldering iron ore in sand form core, and the bottom outer face of the ontology is equipped with insulated feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721556.2A CN110527781B (en) | 2019-08-06 | 2019-08-06 | Slag ladle raw material processing method suitable for copper smelting working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910721556.2A CN110527781B (en) | 2019-08-06 | 2019-08-06 | Slag ladle raw material processing method suitable for copper smelting working condition |
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| Publication Number | Publication Date |
|---|---|
| CN110527781A true CN110527781A (en) | 2019-12-03 |
| CN110527781B CN110527781B (en) | 2021-11-26 |
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| CN201910721556.2A Active CN110527781B (en) | 2019-08-06 | 2019-08-06 | Slag ladle raw material processing method suitable for copper smelting working condition |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226916A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of slag ladle and casting mold |
| CN106609313A (en) * | 2017-01-24 | 2017-05-03 | 中国科学院金属研究所 | High-purity rare earth steel treatment method |
-
2019
- 2019-08-06 CN CN201910721556.2A patent/CN110527781B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226916A (en) * | 2014-09-26 | 2014-12-24 | 衡阳中钢衡重铸锻有限公司 | Casting method of slag ladle and casting mold |
| CN106609313A (en) * | 2017-01-24 | 2017-05-03 | 中国科学院金属研究所 | High-purity rare earth steel treatment method |
Non-Patent Citations (1)
| Title |
|---|
| 张海军等: "洁净钢生产工艺研究", 《宽厚板》 * |
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