CN105382228B - A kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag - Google Patents
A kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag Download PDFInfo
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- CN105382228B CN105382228B CN201510910640.0A CN201510910640A CN105382228B CN 105382228 B CN105382228 B CN 105382228B CN 201510910640 A CN201510910640 A CN 201510910640A CN 105382228 B CN105382228 B CN 105382228B
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- China
- Prior art keywords
- oxygen
- heater
- burner hearth
- slag
- covering slag
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides a kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag, it is related to a kind of heater under oxygen-enriched state.A kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag; including body of heater, fire door and base; body of heater ecto-entad is followed successively by shell, heat-insulation layer, heater, inwall and burner hearth; the top of body of heater sets gas outlet; gas outlet sets sealing-plug; activity sets covering slag hopper in burner hearth; the both sides of body of heater are respectively provided with connecting tube; one end of connecting tube is communicated by oxygen-supplying tube with burner hearth; the other end is connected by oxygen cathete with source of oxygen; oxygen cathete sets and thermocouple is set in flowmeter, burner hearth, thermocouple connection temperature controller.The present invention can control fire box temperature at 650 ~ 900 DEG C, and oxygen is passed through in burner hearth, and oxygen-enriched combusting reaction is complete in a short time to enable carbonaceous material, not only reduces energy consumption, cost, and improves efficiency, reduces personnel labor intensity.
Description
Technical field
The present invention relates to a kind of heater under oxygen-enriched state, and in particular to a kind of continuous crystallizer protecting slag is oxygen-enriched
Carbon-removing equipment.
Background technology
It is to disperse isolation base-material to reach control burn-off rate that carbonaceous material is added in finished product continuous crystallizer protecting slag
Purpose, but the presence of carbonaceous material has considerable influence to physical indexs such as detection finished product protection slag viscosity, surface tension, makes
Testing result is inaccurate, therefore needs to carry out carbon removal treatment to covering slag before detection.
The carbonaceous material of covering slag addition mainly has graphite, carbon black, coke etc., and the principle for removing such carbonaceous material is：
Carbonaceous material is oxidized to CO or CO under conditions of ignition point of the temperature more than carbonaceous material2.And ignition point highest is stone
Ink, its ignition point is generally：613 ~ 897 DEG C, therefore it removes carbon temperature and is greater than 650 DEG C, can generally choose except carbon
650 ~ 1000 DEG C of temperature, but the flux of part low melting point, such as Na are also added with covering slag2CO3Fusing point is 850 DEG C etc., temperature
Too high to make flux melts or sintering, temperature is unsuitable too high, thus choose except carbon temperature range is：650 ~ 900 DEG C, and will
Seek sufficient oxygen and react completely ensureing carbon oxygen.
Most of detection covering slag mechanism is all utilized in being put into covering slag in Muffle furnace and operated except carbon at present, but
Due to Muffle furnace except carbon air is not easily accessible covering slag, it is necessary to covering slag is placed at stove gate, open section fire door, and will
Often stir, except more than carbon 3h can be removed to claimed range carbon content（C≤0.5%）, but do so not only energy consumption compared with
Height, inefficiency increases testing cost, and personnel labor intensity is larger.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, there is provided a kind of quick, efficiently, thoroughly
The carbon-removing equipment for continuous crystallizer protecting slag, by setting oxygen-supplying tube and gas outlet, oxygen can be passed through in burner hearth,
The carbonaceous material of covering slag is fully contacted with oxygen at 650 ~ 900 DEG C, oxygen-enriched combusting, reach it is quick, efficient, thoroughly remove
Carbon effect.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of continuous crystallizer protecting slag is oxygen-enriched
Carbon-removing equipment, including body of heater, fire door and base, the body of heater ecto-entad be followed successively by shell, heat-insulation layer, heater, inwall and
Burner hearth, the top of the body of heater sets gas outlet, and the gas outlet sets sealing-plug, and activity sets protection slag charge in the burner hearth
Bucket, the both sides of the body of heater are respectively provided with connecting tube, and one end of the connecting tube is communicated by oxygen-supplying tube with the burner hearth, another
End is connected by oxygen cathete with source of oxygen, and the oxygen cathete sets and thermocouple, the thermocouple are set in flowmeter, the burner hearth
Connection temperature controller.
Further, the heater is Elema.
Further, the quantity of the heater is four, and two are respectively provided with the top and bottom of the body of heater.
Further, the gas outlet sets screen pack.
Further, the screen pack is 80 mesh stainless (steel) wires.
Further, the connecting tube is stainless steelwork, and the oxygen-supplying tube is corundum product.
Further, the two side of the burner hearth and rear wall are respectively provided with draw-in groove.
Further, the covering slag hopper is in fluted body, with the protuberance being flexibly connected with the draw-in groove.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention passes through the above, it is proposed that it is a kind of it is quick, efficiently, be thoroughly used for removing for continuous crystallizer protecting slag
Carbon equipment, by setting oxygen-supplying tube and gas outlet, can be passed through oxygen in burner hearth, make the carbonaceous material of covering slag 650 ~
Fully contacted with oxygen at 900 DEG C, oxygen-enriched combusting, reach it is quick, efficient, thoroughly remove carbon effect.
The present invention is provided with gas outlet at the top of body of heater, what the excessive oxygen and oxygen-enriched combusting for ensureing supply were produced
Gas can be discharged in time, while gas outlet is provided with sealing-plug, it is closed in heating；The both sides of the body of heater are respectively provided with connection
Pipe, one end of connecting tube is communicated by oxygen-supplying tube with burner hearth, and the other end is connected by oxygen cathete with source of oxygen, and connecting tube is logical oxygen
The connection hinge of pipe and oxygen cathete, is the temporarily providing room of oxygen, plays a part of buffering, and oxygen-supplying tube is used for transmit connecting tube
In oxygen feeding burner hearth, oxygen cathete is used to connect source of oxygen, to convey oxygen to connecting tube；Oxygen cathete sets flowmeter, is easy to
By the flow for adjusting control oxygen；Thermocouple, thermocouple connection temperature controller, for showing and controlling temperature are provided with burner hearth
Degree.
Oxygen-enriched carbon-removing equipment provided by the present invention, can control fire box temperature at 650 ~ 900 DEG C, and oxygen is passed through in burner hearth
Gas, oxygen-enriched combusting reaction is complete in a short time to enable carbonaceous material, in a short time can remove to requiring carbon content
In the range of（C≤0.5%）, energy consumption, cost are not only reduced, and efficiency is improve, reduce personnel labor intensity.
Brief description of the drawings
Fig. 1：A kind of structural representation of the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag of the present invention；
Fig. 2：The right view of Fig. 1 in the present invention；
Fig. 3：The structural representation of covering slag hopper in the present invention；
Wherein, 1- shells, 2- heat-insulation layers, 3- heaters, 4- gas outlets, 5- sealing-plugs, 6- screen packs, 7- burner hearths, 8- heat
Galvanic couple, 9- connecting tubes, 10- oxygen-supplying tubes, 11- covering slag hoppers, 12- bases, 13- flowmeters, 14- fire doors, 15- oxygen cathetes, 16-
Draw-in groove, 17- inwalls, 18- covering slags, 19- temperature controllers.
Specific embodiment
For a better understanding of the present invention, present disclosure, but this hair are further fairly set out with reference to embodiment
Bright protection content is not limited solely to the following examples.
With reference to Fig. 1 ~ Fig. 3, the present invention is described in further detail：A kind of continuous crystallizer protecting slag is oxygen-enriched except carbon sets
Standby, including body of heater, fire door 14 and base 12, body of heater ecto-entad is followed successively by shell 1, heat-insulation layer 2, heater 3, inwall 17 and stove
Thorax 7, the top of body of heater sets gas outlet 4, and gas outlet 4 sets sealing-plug 5, and activity sets covering slag hopper 11, body of heater in burner hearth 7
Both sides be respectively provided with connecting tube 9, one end of connecting tube 9 is communicated by oxygen-supplying tube 10 with burner hearth 7, the other end pass through oxygen cathete 15
It is connected with source of oxygen, oxygen cathete 15 sets and thermocouple 8 is set in flowmeter 13, burner hearth 7, the connection temperature controller 19 of thermocouple 8.
In the present invention, base 12 is located at the bottom of body of heater, for supporting body of heater, preferentially using steelwork；Shell 1 is preferably adopted
Use steel shell；Heat-insulation layer 2 is used to separate heater 3 and shell 1；Inwall 17 is used to separate heater 3 with burner hearth 7, prevents
Burner hearth damages heater when leading to oxygen, inwall 17 is using heat transfer product.
Heater 3 can use resistance wire, Elema or Si-Mo rod, and the present invention preferentially uses Elema；Heater 3 need to be with
Burner hearth 7 separates, while completely cut off with gas outlet 4, in order to avoid damaged by oxygen；Preferably, using four heaters 3, in body of heater
Top and bottom respectively set two, it is ensured that the uniformity of temperature in burner hearth 7.
Gas outlet 4 is provided with the top of body of heater, the gas outlet 4 is through to burner hearth 7 from shell 1, be must assure that out during making
Gas port 4 is completely closed with the interface of burner hearth 7, it is impossible to gas leakage；The excessive oxygen and richness that are provided for ensureing supply of the gas outlet 4
The gas that oxygen burning is produced can be discharged in time；Sealing-plug 5 is installed additional on gas outlet 4, in heating that gas outlet 4 is close
Close；Preferably, install screen pack 6 additional in gas outlet 4, prevent little particle covering slag to be entrained by the flow of air；According to actual needs, it is excellent
First select 80 mesh stainless (steel) wires.
Covering slag hopper 11 is movably set with burner hearth 7, in order to push-and-pull, covering slag is taken, put, its material can be using firm
Beautiful matter or high temperature stainless steel；In view of oxygen-enriched environment, the material of covering slag hopper 11 is preferentially using corundum.Refering to Fig. 3, covering slag
Hopper 11 is in fluted body, and opened upper end, inside is loaded with covering slag 18, with the protuberance 11-1 being connected with draw-in groove 16；Draw-in groove
16 are located on the two side and rear wall of burner hearth 7, by the cooperation of draw-in groove 16 and protuberance 11-1, you can realize covering slag hopper 11
Push-and-pull freely, be easy to take, put covering slag.
Rear portion in burner hearth 7 is provided with thermocouple 8, and quantity is one, and the thermocouple 8 connection temperature controller 19 is used
In display and control temperature；The temperature controller 19 is connected with power supply.
One connecting tube 9 is respectively installed in the rear wall of fire door 14 and body of heater, connecting tube 9 is the connection pivot of oxygen-supplying tube and oxygen cathete
Knob, is the temporarily providing room of oxygen, plays a part of pressure buffer；The connecting tube 9 preferentially uses stainless steelwork, to avoid high temperature
Damage；The caliber of connecting tube 9 is more than oxygen-supplying tube 10 and the caliber of oxygen cathete 15；Connect above-mentioned in furnace interior oxygen-supplying tube 10
Connecting tube 9, oxygen-supplying tube 10 will ensure the seal with burner hearth 7, and the material of oxygen-supplying tube 10 preferentially selects corundum；Outside body of heater
It is connected with above-mentioned connecting tube 9 with oxygen cathete 15, the oxygen cathete 15 can select plastic part, oxygen cathete 15 is connected with source of oxygen, oxygen
Source of the gas can be oxygen production line or oxygen cylinder, flowmeter 13 be set on oxygen cathete 15, for controlling oxygen flow.
The present invention be applied to covering slag except carbon operating process is：Fire door 14 is opened, covering slag hopper 11 is pulled out, uniformly added
Plus a certain amount of covering slag, push-in covering slag hopper 11, fire door 14 is closed, sealing-plug 5 is covered, switch on power, by temperature control
The design temperature of device processed 19；After temperature reaches 650 ~ 900 DEG C, sealing-plug 5 is taken down, open the logical oxygen of source of oxygen, control flowmeter 13
Flow in 2.5L/min, keep 20min, close source of oxygen；Sealing-plug 5 is covered after 1min, fire door 14 is opened, covering slag is pulled out
Hopper 11, the covering slag after pouring out except carbon, push-in covering slag hopper 11 closes fire door 14, standby.
Example 1：Slab continuous casting crystallizer protection slag except carbon
It is 6.55% that the slab continuous casting crystallizer protection slag determines its carbon content according to YB/T190.7, then takes the covering slag
Sample 300g operated except carbon, and concrete operations are as follows：
Fire door 14 is opened, covering slag hopper 11 is pulled out, covering slag is uniformly spread and is sprinkled upon on covering slag hopper 11, push-in protection
Slag charge bucket 11, closes fire door 14, covers sealing-plug 5, switches on power, by the design temperature of temperature controller 19；When temperature reaches
After 700 DEG C, sealing-plug 5 is taken down, open the logical oxygen of source of oxygen, control the flow of flowmeter 13 in 2.5L/min, keep 20min, closed
Close source of oxygen；Sealing-plug 5 is covered after 1min, fire door 14 is opened, covering slag hopper 11 is pulled out, the covering slag after pouring out except carbon is pushed away
Enter covering slag hopper 11, close fire door 14, it is standby.
To being 0.13% except the covering slag after carbon determines its carbon content according to YB/T190.7, disclosure satisfy that YB/T185 is determined
To the requirement of carbon content during viscosity（C≤0.5%）.
Example 2：Covering slag of square billet continuous casting crystallizer except carbon
It is 14.80% that the covering slag of square billet continuous casting crystallizer determines its carbon content according to YB/T190.7, then takes the protection
Slag specimen product 300g operated except carbon, and concrete operations are as follows：
Fire door 14 is opened, covering slag hopper 11 is pulled out, covering slag is uniformly spread and is sprinkled upon on covering slag hopper 11, push-in protection
Slag charge bucket 11, closes fire door 14, covers sealing-plug 5, switches on power, by the design temperature of temperature controller 19；When temperature reaches
After 700 DEG C, sealing-plug 5 is taken down, open the logical oxygen of source of oxygen, control the flow of flowmeter 13 in 2.5L/min, keep 20min, closed
Close source of oxygen；Sealing-plug 5 is covered after 1min, fire door 14 is opened, covering slag hopper 11 is pulled out, the covering slag after pouring out except carbon is pushed away
Enter covering slag hopper 11, close fire door 14, it is standby.
To being 0.28% except the covering slag after carbon determines its carbon content according to YB/T190.7, meet YB/T185 and determine viscosity
When requirement to carbon content（C≤0.5%）.
Example 3：Protecting slag of round blank continuous-casting crystallizer except carbon
It is 20.16% that the round billet blank continuous casting crystallizer covering slag determines its carbon content according to YB/T190.7, then takes the guarantor
Shield slag specimen product 300g operated except carbon, and concrete operations are as follows：
Fire door 14 is opened, covering slag hopper 11 is pulled out, covering slag is uniformly spread and is sprinkled upon on covering slag hopper 11, push-in protection
Slag charge bucket 11, closes fire door 14, covers sealing-plug 5, switches on power, by the design temperature of temperature controller 19；When temperature reaches
After 700 DEG C, sealing-plug 5 is taken down, open the logical oxygen of source of oxygen, control the flow of flowmeter 13 in 2.5L/min, keep 20min, closed
Close source of oxygen；Sealing-plug 5 is covered after 1min, fire door 14 is opened, covering slag hopper 11 is pulled out, the covering slag after pouring out except carbon is pushed away
Enter covering slag hopper 11, close fire door 14, it is standby.
To being 0.35% except the covering slag after carbon determines its carbon content according to YB/T190.7, meet YB/T185 and determine viscosity
When requirement to carbon content（C≤0.5%）.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (6)
1. a kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag, including body of heater, fire door and base, it is characterised in that：The stove
Body ecto-entad is followed successively by shell, heat-insulation layer, heater, inwall and burner hearth, and the top of the body of heater sets gas outlet, it is described go out
Gas port sets sealing-plug, and activity sets covering slag hopper in the burner hearth, and the both sides of the body of heater are respectively provided with connecting tube, described
One end of connecting tube is communicated by oxygen-supplying tube with the burner hearth, and the other end is connected by oxygen cathete with source of oxygen, the oxygen cathete
Set and thermocouple is set in flowmeter, the burner hearth, the thermocouple connects temperature controller, and the caliber of the connecting tube is more than
The caliber of oxygen-supplying tube and oxygen cathete；
The two side of the burner hearth and rear wall are respectively provided with draw-in groove, and the covering slag hopper is in fluted body, with the draw-in groove
The protuberance of flexible connection,
The operating method of the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag is：The fire door is opened, the covering slag is pulled out
Hopper, uniformly adds a certain amount of covering slag, pushes the covering slag hopper, closes the fire door, covers the sealing-plug, connects
Energization source, by the temperature controller design temperature；After temperature reaches 650 ~ 900 DEG C, the sealing-plug is taken down, open oxygen
Source of the gas leads to oxygen, controls the flow of the flowmeter in 2.5L/min, keeps 20min, closes source of oxygen；Covered after 1min described close
Blocking, opens the fire door, pulls out the covering slag hopper, and the covering slag after pouring out except carbon pushes the covering slag hopper, closes
Close the fire door.
2. the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag as claimed in claim 1, it is characterised in that：
The heater is Elema.
3. the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag as claimed in claim 2, it is characterised in that：
The quantity of the heater is four, and two are respectively provided with the top and bottom of the body of heater.
4. the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag as claimed in claim 1, it is characterised in that：
The gas outlet sets screen pack.
5. the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag as claimed in claim 4, it is characterised in that：
The screen pack is 80 mesh stainless (steel) wires.
6. the oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag as claimed in claim 1, it is characterised in that：
The connecting tube is stainless steelwork, and the oxygen-supplying tube is corundum product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910640.0A CN105382228B (en) | 2015-12-10 | 2015-12-10 | A kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910640.0A CN105382228B (en) | 2015-12-10 | 2015-12-10 | A kind of oxygen-enriched carbon-removing equipment of continuous crystallizer protecting slag |
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| Publication Number | Publication Date |
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| CN105382228A CN105382228A (en) | 2016-03-09 |
| CN105382228B true CN105382228B (en) | 2017-07-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714217C2 (en) * | 1996-10-30 | 1999-08-19 | Schloemann Siemag Ag | Process and casting powder for continuous metal casting |
| CN201493455U (en) * | 2009-08-25 | 2010-06-02 | 武汉钢铁(集团)公司 | Decarburization device of protective slag |
| CN102039386A (en) * | 2009-10-15 | 2011-05-04 | 攀钢集团研究院有限公司 | Crystallizer mold powder for continuous casting and continuous casting method of low-alloy steel slab |
| CN103185770A (en) * | 2011-12-30 | 2013-07-03 | 宝山钢铁股份有限公司 | Device and method for simulating reaction of continuous casting protective slag and molten steel |
| CN103317111A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Fluoride-free mold powder for low-carbon steel |
-
2015
- 2015-12-10 CN CN201510910640.0A patent/CN105382228B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714217C2 (en) * | 1996-10-30 | 1999-08-19 | Schloemann Siemag Ag | Process and casting powder for continuous metal casting |
| CN201493455U (en) * | 2009-08-25 | 2010-06-02 | 武汉钢铁(集团)公司 | Decarburization device of protective slag |
| CN102039386A (en) * | 2009-10-15 | 2011-05-04 | 攀钢集团研究院有限公司 | Crystallizer mold powder for continuous casting and continuous casting method of low-alloy steel slab |
| CN103185770A (en) * | 2011-12-30 | 2013-07-03 | 宝山钢铁股份有限公司 | Device and method for simulating reaction of continuous casting protective slag and molten steel |
| CN103317111A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Fluoride-free mold powder for low-carbon steel |
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| CN105382228A (en) | 2016-03-09 |
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