CN105021039A - Steel making device with vacuumizing device and operation method of steel making device - Google Patents
Steel making device with vacuumizing device and operation method of steel making device Download PDFInfo
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- CN105021039A CN105021039A CN201510244331.4A CN201510244331A CN105021039A CN 105021039 A CN105021039 A CN 105021039A CN 201510244331 A CN201510244331 A CN 201510244331A CN 105021039 A CN105021039 A CN 105021039A
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Abstract
The invention provides a steel making device with a vacuumizing device and an operation method of the steel making device, and belongs to the technical field of steel metallurgy. The steel making device with the vacuumizing device and the operation method of the steel making device are provided to solve the problems that in the prior art, the steel making process is limited to raw material selection, and great limitation exists. The steel making device with the vacuumizing device comprises a blast furnace, an electric arc furnace and a converter. A first material throwing hopper is connected with one end of the blast furnace. The other end of the blast furnace is connected with the converter through a liquid steel conveying pipeline. The liquid steel conveying pipeline is connected with a control valve in series. The converter is connected with a refining furnace through a material conveying device. The refining furnace is connected with a crystallizer through the material conveying device. A second material throwing hopper is connected with one end of the electric arc furnace. The other end of the electric arc furnace is connected with the refining furnace through the material conveying device. The blast furnace, the converter, the electric arc furnace and the refining furnace are electrically connected with the vacuumizing device which is connected with a controller in an electric control manner.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, relate to a kind of steelmaking equipment, particularly a kind of steelmaking equipment and How It Works thereof with vacuum extractor.
Background technology
In recent years, the industry such as China's automobile, shipbuilding, container, petrochemical industry, electrician is in great demand to high-quality steel.Along with being growing more intense of steel (particularly high value added product) market competition, many steel mills are improving product competitiveness, improve the degree of purity of steel, improve steel performance, builtly erect large-scale production ultra-clean steel (in steel total impurities: S+P+N+H+O≤100 × 10-6) production system.
Electric-arc furnace steelmaking: the body of heater of electric arc furnaces can rotate, and does shell with steel plate, and the inside refractory material does liner.Do not need during electric-arc furnace steelmaking additionally to heat, because molten iron originally high temperature, its inside is also continue the oxidation reaction of heating again.This reaction is from silicon, carbon in molten iron and be blown into oxygen.Because do not need again with fuel heating, so reduce energy resource consumption, so be widely used in steel-making.Be blown into after the oxygen in stove and the carbon in molten iron reacts, the carbon content in molten iron will reduce and become steel.This reaction inherently can come in the evolution of heat, and thus molten iron not only can continue to remain molten state, and may be more and more hotter.Therefore, for adjusting the applicable temperature of molten iron, people also can add some steel scraps and a small amount of cold pig iron block and ore etc. again.Also will add some lime, quartz, fluorite etc., the refuse that these materials can produce when becoming molten steel with molten iron forms bits simultaneously.Therefore, they are called as slag material.Arc furnace steeling process flow process: blast-melted → molten iron pretreatment → blow electric-arc furnace steelmaking → external refining → continuous casting → hot rolling again, it is the field of steel-making of raw material that electric-arc furnace steelmaking is mainly used in iron ore.
Electric furnace steel making: the thermal source of electric-arc furnace steelmaking is the electrode having graphite to make in electric energy note electric arc furnaces, and can send strong electric arc between the termination of electrode and furnace charge, the similar lightning that we see, has high heat energy.We know, are mainly oxidized to the carbon in molten iron the content reducing carbon when making steel, but when needing other elements containing some easy oxidations in the kind of some steel, if be blown into too much oxygen, will those elements also two oxidized.At this moment, just seem superior many with electric-arc furnace steelmaking.Therefore, electric arc furnaces is often used for alloy smelting steel and carbon steel.Electric arc furnaces is mainly raw material with scrap steel.After installing furnace charge, bell can cover, and just declines close to furnace charge surface with rear electrode.At this moment switch on power, electrode will send load melting by ate electrode of electric arc.Then high voltage, accelerates burn-off rate.Along with the fusing degree of furnace charge, the position of furnace charge (molten steel) can change, and at this moment electrode also can automatic height adjustment and can not being submerged in molten steel.Also some oxygen will be blown into, to accelerate burn-off rate with during electric-arc furnace steelmaking.This oxygen blown time must be grasped accurately, otherwise can blast.When furnace charge will all melt, molten steel surface can one deck slag adrift, and at this moment workpeople can take out some molten steel and slag to analyze their composition, looks at how this stove steel refines.If there is the element harmful to steel quality the inside, also will continues refining and be removed, it is the field of steel-making of raw material that electric-arc furnace steelmaking is mainly used in steel scrap.
Traditional process for making, mainly according to the difference of steelmaking feed, selects suitable device to make steel, be limited to steelmaking feed, there is great limitation, and the intelligence degree of process for making is inadequate.
Summary of the invention
The object of the invention is to propose one and set up automatic sensing-detecting vacuum equipment and control device, mechanical vacuum is adopted to regulate and control, and self vacuum conditions of coupled system structure, to realize the corresponding vacuum adjustment of producing for difference, reach the steelmaking equipment with vacuum extractor and the How It Works thereof of automatic integratedization control.
Object of the present invention realizes by following technical proposal:
A kind of steelmaking equipment with vacuum extractor, comprise blast furnace, electric arc furnaces and converter, one end of described blast furnace is connected with the first material and throws in bucket, the other end of described blast furnace connects converter by iron juice conveyance conduit, described iron juice conveyance conduit is serially connected with control valve, the junction of described iron juice conveyance conduit and converter is provided with screen pack, described converter connects refining furnace by device for transporting objects, described device for transporting objects comprises fixed support, described support bracket fastened top is covered with the shell in closed, described fixed support is equipped with conveyer belt, described refining furnace connects crystallizer by device for transporting objects, one end of described electric arc furnaces is connected with the second material and throws in bucket, the other end of described electric arc furnaces connects above-mentioned refining furnace by device for transporting objects, described blast furnace, converter, electric arc furnaces and refining furnace inside are respectively equipped with vacuum sensors, described vacuum sensors Electricity Federation controller, described blast furnace, converter, electric arc furnaces and refining furnace Electricity Federation vacuum extractor, described vacuum extractor electricly connects controller, vacuum conditions pipeline is provided with between described converter and electric arc furnaces, described vacuum conditions pipeline is provided with vacuum breaker.
A kind ofly have in the steelmaking equipment of vacuum extractor above-mentioned, the screen pack of the junction of described iron juice conveyance conduit and converter, can filter the iron juice that blast furnace produces, prevent impurity from entering converter, improve the purity of material; Described device for transporting objects comprises fixed support, and described support bracket fastened top is covered with in closed shell, ensures can not be mixed into introduced contaminants in material conveying process, and described fixed support is equipped with conveyer belt, is used for convey materials.
A kind ofly have in the steelmaking equipment of vacuum extractor above-mentioned, described controller is provided with control button and gear button.
A kind ofly have in the steelmaking equipment of vacuum extractor above-mentioned, described gear button is provided with the first gear and the second gear.
A kind ofly have in the steelmaking equipment of vacuum extractor above-mentioned, described first material throw in bucket and the second material throw in struggle against on be respectively equipped with mixing arm, can by stirring full and uniform for material.
A kind ofly have in the steelmaking equipment of vacuum extractor above-mentioned, the bottom of described crystallizer is provided with flash cooler, can accelerate the quick cooling of crystallizer.
There is a How It Works for the steelmaking equipment of vacuum extractor, adopt a kind of steelmaking equipment with vacuum extractor as above, comprise the following steps:
Step one: open the control button on controller, selects the first gear or the second gear work by gear button simultaneously, and the first gear is used for control first material and throws in bucket startup work, and the second gear is used for control second material and throws in bucket startup work; While monitoring control devices is thrown in material, the vacuum sensors be provided with by blast furnace, converter, electric arc furnaces and refining furnace inside monitors the vacuum in blast furnace, converter, electric arc furnaces and refining furnace respectively, and the vacuum ranges of the blast furnace preset is 1.33 × 10
-1~ 133.3Pa, the vacuum ranges of converter is 1.0 × 10
-1~ 100Pa, the vacuum ranges of electric arc furnaces is 9.0 × 10
-2~ 90Pa, the vacuum ranges of refining furnace is refining furnace 1.52 × 10
-1~ 152.3Pa, when in a certain body of heater in monitoring control devices to blast furnace, converter, electric arc furnaces or refining furnace, vacuum is too low, controller controls to start the vacuum breaker on vacuum conditions pipeline and control valve, make to be communicated with between body of heater, gas clean-up, when in a certain body of heater in monitoring control devices to blast furnace, converter, electric arc furnaces or refining furnace, vacuum is too high, controller controls vacuum extractor and starts vacuum pumping;
Step 2: material is put into the first material and thrown in bucket, throws in bucket enter blast furnace by the first material, and through calcining in blast furnace, produce iron juice, iron juice enters converter through iron juice conveyance conduit, refines in converter; If the second material put into by material throw in bucket, material passes through and refines in electric arc furnaces;
Step 3: enter refining furnace through the material of converter or electric arc furnaces process through device for transporting objects and carry out double refining, improve purity;
Step 4: through the material of refining furnace double refining, being transported to crystallizer by device for transporting objects, to carry out crystallization moulding.
Compared with prior art, the present invention is provided with the first material simultaneously and throws in bucket and the second material input bucket, for different materials, carry out the extractive process of different flow process, the selection of different flow process is realized by the control button on controller and gear button, solves steel-smelting device and is limited to raw-material deficiency, blast furnace, converter, electric arc furnaces and refining furnace Electricity Federation vacuum extractor simultaneously, vacuum extractor electricly connects controller, in steelmaking process, realize vacuum condition, improves the purity of steel greatly.
Accompanying drawing explanation
Fig. 1 is a kind of steelmaking equipment and How It Works schematic diagram thereof with vacuum extractor.
In figure, bucket thrown in by the 1, first material; 2, blast furnace; 3, iron juice conveyance conduit; 4, control valve; 5, converter; 6, device for transporting objects; 7, refining furnace; 8, crystallizer; 9, electric arc furnaces; 10, bucket thrown in by the second material; 11, vacuum extractor; 12, controller.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, a kind of steelmaking equipment with vacuum extractor, comprise blast furnace 2, electric arc furnaces 9 and converter 5, one end of blast furnace 2 is connected with the first material and throws in bucket 1, the other end of blast furnace 2 connects converter 5 by iron juice conveyance conduit 3, iron juice conveyance conduit 3 is serially connected with control valve 4, iron juice conveyance conduit 3 is provided with screen pack with the junction of converter 5, converter 5 connects refining furnace 7 by device for transporting objects 6, device for transporting objects 6 comprises fixed support, support bracket fastened top is covered with the shell in closed, fixed support is equipped with conveyer belt, refining furnace 7 connects crystallizer 8 by device for transporting objects 6, one end of electric arc furnaces 9 is connected with the second material and throws in bucket 10, the other end of electric arc furnaces 9 connects above-mentioned refining furnace 7 by device for transporting objects 6, blast furnace 2, converter 5, electric arc furnaces 9 and refining furnace 7 inside are respectively equipped with vacuum sensors, vacuum sensors Electricity Federation controller 12, blast furnace 2, converter 5, electric arc furnaces 9 and refining furnace 7 Electricity Federation vacuum extractor 11, vacuum extractor 11 electricly connects controller 12, vacuum conditions pipeline is provided with between converter 5 and electric arc furnaces 9, vacuum conditions pipeline is provided with vacuum breaker.
The screen pack of the junction of iron juice conveyance conduit 3 and converter 5, the iron juice that blast furnace 2 can be produced filters, and prevents impurity from entering converter 5, improves the purity of material; Device for transporting objects 6 comprises fixed support, and support bracket fastened top is covered with in closed shell, ensures can not be mixed into introduced contaminants in material conveying process, and fixed support is equipped with conveyer belt, is used for convey materials.
Controller 12 is provided with control button and gear button.
Gear button is provided with the first gear and the second gear.
First material input bucket 1 and the second material are thrown on bucket 10 and are respectively equipped with mixing arm, can by stirring full and uniform for material.
The bottom of crystallizer 8 is provided with flash cooler, can accelerate the quick cooling of crystallizer 8.
There is a How It Works for the steelmaking equipment of vacuum extractor, adopt a kind of steelmaking equipment with vacuum extractor as above, comprise the following steps:
Step one: open the control button on controller 12, selects the first gear or the second gear work by gear button simultaneously, and the first gear is used for control first material and throws in bucket startup work, and the second gear is used for control second material and throws in bucket startup work; While controller 12 monitors material input, the vacuum sensors be provided with by blast furnace 2, converter 5, electric arc furnaces 9 and refining furnace 7 inside monitors the vacuum in blast furnace 2, converter 5, electric arc furnaces 9 and refining furnace 7 respectively, and the vacuum ranges of the blast furnace 2 preset is 1.33 × 10
-1~ 133.3Pa, the vacuum ranges of converter 5 is 1.0 × 10
-1~ 100Pa, the vacuum ranges of electric arc furnaces 9 is 9.0 × 10
-2~ 90Pa, the vacuum ranges of refining furnace 7 is refining furnace 1.52 × 10
-1~ 152.3Pa, when controller 12 monitors that in blast furnace 2, converter 5, electric arc furnaces 9 or refining furnace 7, in a certain body of heater, vacuum is too low, controller 12 controls to start the vacuum breaker on vacuum conditions pipeline and control valve 4, make to be communicated with between body of heater, gas clean-up, when controller 12 monitors that in high 2 stoves, converter 5, electric arc furnaces 9 or refining furnace 7, in a certain body of heater, vacuum is too high, controller 12 controls vacuum extractor 11 and starts vacuum pumping;
Step 2: material is put into the first material and to be thrown in bucket 1, and throw in bucket 1 by the first material and enter blast furnace 2, through calcining in blast furnace 2, produce iron juice, iron juice enters converter through iron juice conveyance conduit 3, refines in converter 5; If the second material put into by material throw in bucket 10, material passes through and refines in electric arc furnaces 9;
Step 3: the material processed through converter 5 or electric arc furnaces 9 enters refining furnace 7 through device for transporting objects 6 and carries out double refining, improves purity;
Step 4: through the material of refining furnace 7 double refining, being transported to crystallizer 8 by device for transporting objects 6, to carry out crystallization moulding.
The vacuum that vacuum extractor 11 controls to arrive is 1.33 × 10
-1~ 133.3Pa, when exceeding this vacuum, controller 12 controls stopping and vacuumizing.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the first material herein to throw in the term such as bucket 1, blast furnace 2, iron juice conveyance conduit 3, control valve 4, electric arc furnaces 5, device for transporting objects 6, refining furnace 7, crystallizer 8, the input of electric arc furnaces 9, second material bucket 10, vacuum extractor 11, controller 12, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (6)
1. one kind has the steelmaking equipment of vacuum extractor, comprise blast furnace, electric arc furnaces and converter, it is characterized in that, one end of described blast furnace is connected with the first material and throws in bucket, the other end of described blast furnace connects converter by iron juice conveyance conduit, described iron juice conveyance conduit is serially connected with control valve, the junction of described iron juice conveyance conduit and converter is provided with screen pack, described converter connects refining furnace by device for transporting objects, described device for transporting objects comprises fixed support, described support bracket fastened top is covered with the shell in closed, described fixed support is equipped with conveyer belt, described refining furnace connects crystallizer by device for transporting objects, one end of described electric arc furnaces is connected with the second material and throws in bucket, the other end of described electric arc furnaces connects above-mentioned refining furnace by device for transporting objects, described blast furnace, converter, electric arc furnaces and refining furnace inside are respectively equipped with vacuum sensors, described vacuum sensors Electricity Federation controller, described blast furnace, converter, electric arc furnaces and refining furnace Electricity Federation vacuum extractor, described vacuum extractor electricly connects controller, vacuum conditions pipeline is provided with between described converter and electric arc furnaces, described vacuum conditions pipeline is provided with vacuum breaker.
2. a kind of steelmaking equipment with vacuum extractor according to claim 1, is characterized in that, described controller is provided with control button and gear button.
3. a kind of steelmaking equipment with vacuum extractor according to claim 2, is characterized in that, described gear button is provided with the first gear and the second gear.
4. a kind of steelmaking equipment with vacuum extractor according to claim 1, is characterized in that, described first material input bucket and the second material are respectively equipped with mixing arm on throwing in and struggling against.
5. a kind of steelmaking equipment with vacuum extractor according to claim 1, it is characterized in that, the bottom of described crystallizer is provided with flash cooler.
6. there is a How It Works for the steelmaking equipment of vacuum extractor, adopt a kind of steelmaking equipment with vacuum extractor as claimed in claim 1, it is characterized in that, comprise the following steps:
Step one: open the control button on controller, selects the first gear or the second gear work by gear button simultaneously, and the first gear is used for control first material and throws in bucket startup work, and the second gear is used for control second material and throws in bucket startup work; While described monitoring control devices is thrown in material, the vacuum sensors be provided with by blast furnace, converter, electric arc furnaces and refining furnace inside monitors the vacuum in blast furnace, converter, electric arc furnaces and refining furnace respectively, and the vacuum ranges of the blast furnace preset is 1.33 × 10
-1~ 133.3Pa, the vacuum ranges of converter is 1.0 × 10
-1~ 100Pa, the vacuum ranges of electric arc furnaces is 9.0 × 10
-2~ 90Pa, the vacuum ranges of refining furnace is refining furnace 1.52 × 10
-1~ 152.3Pa, when in a certain body of heater in monitoring control devices to blast furnace, converter, electric arc furnaces or refining furnace, vacuum is too low, controller controls to start the vacuum breaker on vacuum conditions pipeline and control valve, make to be communicated with between body of heater, gas clean-up, when in a certain body of heater in monitoring control devices to blast furnace, converter, electric arc furnaces or refining furnace, vacuum is too high, controller controls vacuum extractor and starts vacuum pumping;
Step 2: material is put into the first material and thrown in bucket, throws in bucket enter blast furnace by the first material, and through calcining in blast furnace, produce iron juice, material refines in converter; If material is put into the second material and thrown in bucket, material refines in electric arc furnaces;
Step 3: enter refining furnace through the material of converter or electric arc furnaces process through device for transporting objects and carry out double refining, improve purity;
Step 4: through the material of refining furnace double refining, being transported to crystallizer by device for transporting objects, to carry out crystallization moulding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244331.4A CN105021039A (en) | 2015-05-13 | 2015-05-13 | Steel making device with vacuumizing device and operation method of steel making device |
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| CN201510244331.4A CN105021039A (en) | 2015-05-13 | 2015-05-13 | Steel making device with vacuumizing device and operation method of steel making device |
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| CN105021039A true CN105021039A (en) | 2015-11-04 |
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| CN201510244331.4A Pending CN105021039A (en) | 2015-05-13 | 2015-05-13 | Steel making device with vacuumizing device and operation method of steel making device |
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Application publication date: 20151104 |
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