CN1985011A - Method and installation for producing and increasing the annual production yield of large-scale steel products or high-quality steel products in a two-vessel installation - Google Patents
Method and installation for producing and increasing the annual production yield of large-scale steel products or high-quality steel products in a two-vessel installation Download PDFInfo
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- CN1985011A CN1985011A CNA2005800141526A CN200580014152A CN1985011A CN 1985011 A CN1985011 A CN 1985011A CN A2005800141526 A CNA2005800141526 A CN A2005800141526A CN 200580014152 A CN200580014152 A CN 200580014152A CN 1985011 A CN1985011 A CN 1985011A
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- stove
- spray gun
- blown
- brick
- oxygen
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- 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
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
- C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
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- 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
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
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- 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
- C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a method and an installation for the large-scale production of steel products or the production of high-quality, different steel products in a two-vessel installation (1), said method and installation improving the crude steel yield for a melting bath depth (15) of approximately 1,000 mm to 1,800 mm. According to the invention, the buoyancy plumes (14a) of the porous bottom plugs (14) are adjusted to within a respective minimum distance (16) of 2/3 in relation to the edge of the melting bath (17) and to a distance (18) of 1/3 in relation to the centre of the melting bath (19) with a blowing angle of alpha = 15 DEG to 40 DEG for the nozzles (6b) of an oxygen top-blowing lance (6) in relation to the vertical and the buoyancy plumes (14a) are formed with a maximum 2 Nm<3> of argon or nitrogen per minute and per porous bottom plug (14).
Description
Technical field
The present invention relates to a kind of method and a kind of equipment, be used for using twin containers equipment (to produce common or fine different mass steel under the situation of Zwei-Gef β-Anlage), described equipment comprises the revolution and the lifting device that are used to introduce or take out the process unit, wherein the type of furnace of furnace lining is pressed the favourable flow condition design of molten steel and/or slag, mode is: the layout in the following furnace bottom is provided with the bottom and blows towards brick (Bodensp ü lstein), and this layout is blown towards the interaction between the upper punch free jet of brick according to oxygen top blown jet and bottom and is determined.
Background technology
By " Stahl und Eisen " 123 (2003) Nr.11,94-98 page or leaf, the method that known preface is touched upon and a kind of similar equipment.The measure of taking there relates to the geometry of optimizing container, is not obtaining better result aspect the steel quality of producing although implemented this optimization.Annual production that attention is not placed on and produces diverse steel quality, improves steel and use twin containers system.
Summary of the invention
The objective of the invention is, in a kind of existing twin containers equipment,, significantly improve the unit time output of steel of selectable steel quality by the enhancing process with by coordinating each container and size, roughly double until steel output.
The purpose that is proposed is from the described method of preface, take following measures to reach by the present invention, promptly, at pool depth is under the situation of about 1000mm to 1800mm, at the nozzle of oxygen top blown spray gun during with respect to the blowing angle α of vertical line=15 ° to 40 °, the bottom blow towards the upper punch free jet of brick be adjusted into respectively in one 2/3 minor increment melt tank edge and with one 1/3 distance to the center, molten bath, and described upper punch free jet blows towards brick maximum 2Nm with per minute and every bottom
3Argon or nitrogen constitute.Therefore significantly quicken the refining process of bigger volume molten steel, thereby can produce more raw steel in the unit time.
A kind ofly support the measure of described basic thought to be, additionally be blown into oxygen by a angle at refining stage with respect to 5 ° to 45 ° at sea line by the side-blown spray gun that inserts below the slag.Therefore help big volume molten steel thoroughly to stir.
By another measure regulation, two containers are worked with oxygen simultaneously.The advantage of the second oxygen top blown spray gun that obtains thus is, connects the blowing stage simultaneously or hocket as purity oxygen top blast process according to the steel scrap of preparation direct-reduced iron or the pig iron and/or each container in two containers.This use possibility for example surpasses 60/40% or generation in 40/60% o'clock in the weight ratio of direct reductive iron and the pig iron.
Bigger molten steel volume considers like this by other features, that is, at minimum pool depth during for about 1000mm to 1800mm, by the oxygen top blown spray gun with 100-500Nm
3/ min is blown into oxygen.
The equipment of steel that is used to produce higher output yield is from the described feature of preface, and is that it is about 1000mm to 1800mm that following stove has pool depth by the present invention's measure that the proposition purpose is taked in order to reach; When arranging when rounded substantially, the bottom blow towards brick be set to respectively in one 2/3 minor increment melt tank edge and with one 1/3 distance to the center, molten bath; The nozzle of oxygen top blown spray gun is with respect to the blowing angle α of vertical line=15 °-40 °, and the upper punch free jet blows towards the maximum 2Nm of brick with per minute and every bottom
3Argon or oxygen work.
Can take measures to reach and increase volume more, that is, the pool depth of increasing constitutes by punching out bowl-type bottom that is connected container bottom or monoblock type punching out bowl-type bottom.Thus possible pool depth has been strengthened the height of a punching out bowl-type bottom.
Other are characterised in that, the second oxygen top blown spray gun changes over to and produces of outside, axis and is installed on the radius in the additional revolution and lifting device that separates.When two oxygen top blown spray guns changed the working position over to, the arc electrodes system can be turned back in two spaces between the container and be in stand.Advantageously, the second oxygen top blown spray gun is blowing simultaneously in two containers, and according to the preparation direct reductive pig iron, the pig iron and/or scrap iron, alternately implements pure BOF process or EAF process in each stove.If for example the ratio of the DRJ/ pig iron surpass 60/40 or 40/60% o'clock this feature be favourable.
Owing to increasing oxygen supply and blowing towards the produced simultaneously bigger energy of the stirring gas of brick and side-blown spray gun from the bottom owing to strengthening, can further take following measures to absorb, that is, make the last stove that is connected down on the stove constitute by the seamless distance of refrigerative copper shell, cold drawing, Tong Bi, fire-resistant wallboard and/or liquid cooling pipe ground.
Therewith correspondingly, by another feature, the side-blown spray gun of arranging along the ground that distributes in stove week passes the corresponding wall of stove.
In addition advantageously, the side-blown spray gun that passes cleanout door is designed to consumable formula side-blown spray gun.Therefore refractory walls can prevent too much wearing and tearing and in addition can improve electric power from usual 100-110MW to 120-140MW.
But this twin containers system except both sides utilize can turn round and the advantage of the oxygen top blown spray gun of lifting and arc electrodes system, also further develop as described below, that is, different steel qualities can be produced in single container.Be that for the C-steel, following stove is provided with eccentric bottom tap hole and is used to not have the slag tapping for reaching the measure that this purpose takes.The bottom used as next fusion process of slag is stayed down in the stove in this case.
Produce stainless different process step and solve like this by the present invention, that is, for stainless steel, cupola well is designed to the chute tiling arrangement, comprise one of following stove can on turn over and the circumferential segment of commentaries on classics down.Advantage is to utilize so-called Belling effect (Perin-Effekt), and this moment, slag was discharged with molten steel, and separates again after stirring in processing vessel, so that reclaim contained chromium from slag.
Other are characterised in that, the tapping district of chute tiling arrangement is provided with a molten steel that is used for molten steel and does not have the slag tapping and separates chute (Siphon) with slag.
Known twin containers equipment has electric arc furnace and converter, and by other characteristics specify, two metallurgical tanks are made of electric arc furnace, and they are respectively equipped with the transformer of oneself in case of necessity.The additional second oxygen top blown spray gun allows two containers simultaneously as the oxygen top blown container work, or according to container of the total situation that provides as the operation of oxygen top blown method and second container as electric arc furnace work, otherwise perhaps.By the time program, also can press the enforcement of oxygen top blown method by a container, and second container is equally by the work of oxygen top blown method or be converted to the electric arc oven process.
Description of drawings
Accompanying drawing is expressed (method and apparatus) embodiment and below they is described in detail.
Wherein:
Fig. 1 is by the left container of twin containers equipment, the cross section of an electric arc furnace;
Fig. 2 has the following stove vertical view that blows towards the brick layout;
Fig. 3 has the electric arc furnace cross section of different melt pool heights;
Fig. 3 A is used to constitute copper or the outer steel shell skeleton view of going up the stove furnace wall;
Fig. 4 is by the cross section of twin containers equipment, and wherein two containers are made up of electric arc furnace;
Fig. 5 is by the cross section of single container, and it alternately produces C-steel and stainless steel;
Fig. 6 has the twin containers equipment vertical view of two oxygen top blown spray guns; And
The twin containers equipment work mode that Fig. 7 A-7D is different.
Embodiment
Only represented a container in the twin containers equipment 1 by Fig. 1, (being illustrated in a left side) electric arc furnace 2, it has common revolution and lifting device 3, device for revolving and driving 4 and lifting drive 5, they are as the process unit of introducing or taking out, and change over to, promote, descend or produce oxygen top blown spray gun 6 and arc electrodes system 7 (see figure 4)s.Electric arc furnace 2 is by stove 2a and last stove 2b form down.The type of furnace 8 of the furnace lining of being made up of permanent furnace lining and loss furnace lining as common in following stove 2a 9 is pressed molten steel 10 and slag 11 favourable flow conditions design.Stove 2a bottom 13 in there be bottom dash the layout 12 of blowing brick 14 under relating to here, oxygen top blown jet 6a and bottom are interacted towards generation between the upper punch free jet 14a that blows brick 14.
Described interaction is at first dashed the layout 12 of blowing brick 14 by the bottom of having strengthened pool depth 15, by strengthening melting and blowing process and by improving the amount of unit time steel, increasing the tonnage of each heat steel, improves throughput.For this reason, at nozzle 6b during, the bottom blown to be adjusted into one 2/3 minor increment 16 towards brick 14 leave melt tank edge 17 and leave center, molten bath 19 with one 1/3 distance 18 with respect to the blowing angle α of vertical line=15 °-40 °.Upper punch free jet 14a is blown towards brick 14 maximum 2Nm by per minute and every bottom
3Argon or nitrogen constitute.Be blown into about 100-500 Nm by oxygen top blown spray gun 6 per minutes
3Oxygen.The bottom is blown towards the hole of brick 14 and is used nitrogen (N respectively
2) or argon (Ar) work and supply with maximum 2Nm
3/ min.The bottom is blown towards brick 14 big quantity (adopting eight bottoms to blow towards brick 14 in the present embodiment) and has been improved the effect to melt flow.
By additionally inserting the side-blown spray gun 20 of slag 11 belows, at refining stage with oxygen (O
2) or hydrocarbon polymer (CH
4) be blown into by the angle with respect to 5 °-45 ° at sea line.
The last stove 2b that is connected down on the stove 2a by Fig. 2 is made of refrigerative copper shell 21, cold drawing, Tong Bi, fire-resistant wallboard and/or liquid cooling pipe 22 (seamless distance ground).
Side-blown spray gun 20 is provided with along the ground that distributes in stove week 23, and passes stove 2b copper wall separately.Described (copper) wall can be made of the seamless distance of refrigerative copper shell 21, cold drawing, Tong Bi, fire-resistant wallboard and/or liquid cooling pipe 22 (as described in Fig. 1) ground.The side-blown spray gun 20 that passes the copper wall can be designed as consumable formula side-blown spray gun 20a.
In order to produce the C-steel, following stove 2a is provided with eccentric bottom tap hole 24 and closed valve 25.
For stainless steel, following stove 2a is designed to chute tiling arrangement 26, and it comprises a circumferential segment 27 that can promote and close.
In Fig. 2, the layout 12 towards brick 14 is blown in 13 furnace linings, 9 inside bottom can seeing in electric arc furnace 2 and following stove 2a.
Bottom is outside blown towards brick 14 and is in the position that minor increment 16 is arranged from melt tank edge 17, and this distance 16 equals 2/3 of distance between melt tank edge 17 and the center, molten bath 19 substantially.Similarly, these bottoms are outside blown towards brick 14 and are in the position that distance 18 is arranged from center, molten bath 19, and this distance 18 is roughly 1/3 of distance between melt tank edge 17 and the center, molten bath 19.
Fig. 3 represents the another kind of container of electric arc furnace 2.Bottom having, blows following stove 2a illustrated layout 12 towards brick 14.But descend stove 2a design that the pool depth 15a of increasing is arranged generally.This pool depth 15a forms with respect to the container bottom 13 additional punching out bowl-type bottom 15b with described furnace lining 9 that install by one.Blow towards the upper punch free jet 14a of brick 14 layouts 12 by the bottom, here they are 100-500Nm by the hyperoxia amount is arranged
3The stirring of the additional enhancing molten steel 10 of the oxygen top blown spray gun 6 of/min causes this method that higher melting and affinability are arranged.The thermal load that the formed stove 2b of going up is higher absorbs by some copper shells 21, they also can be by slick water-cooled copper (or steel) system cold drawing or water-cooled and constitute with refractory-lined wall or by fire-resistant lid with pipe layer of forming by the liquid cooling pipe 22 that flows through water, between managing 22, do not have the slit.
Twin containers equipment by Fig. 4 is made of two electric arc furnace 2.Molten steel 10 is infeeding 100-500 Nm by oxygen top blown spray gun 6 in left container
3Refining under the condition of/min oxygen, and in right container, when beta maximum energy is supplied with to 140-160MVA, carry out the melting of filler.In left container, blow the N that is used to stir towards brick 14 addings by the bottom
2Or Ar, formation per minute and every bottom are blown towards brick 14 and are 2Nm
3The upper punch free jet 14a of/min.
Eccentric bottom tap hole 24 allows to discharge the C-steel under the situation that does not have slag 11.When producing stainless steel, vessels switchover separately is a chute tiling arrangement 26.In this case by can turn round circumferential segment 27 on turn over the slag that expectation takes place and flow simultaneously.From being collected in out the slag 11 (Cr in the steel container
2O
3) the middle chromium that reclaims.
Expression is used to produce stainless steel or the C-steel mode of operation as chute tiling arrangement 26 in Fig. 5.When producing stainless steel, do not use as when producing the C-steel used eccentric bottom tap hole 24, and be to use " the chute tiling arrangement effect " of the circumferential segment 27 of turning on having.In entering processing vessel 31, slag 11 utilizes so-called Belling effect by molten steel 10 then.The reduction of chromium or recovery are undertaken by following formula in this case:
Cr
2O
3+3C＝2Cr+3CO
Or
2Cr
2O
3+3Si＝4Cr+3SiO
2
In Fig. 6, twin containers equipment 1 has a kind of form of implementation that comprises two electric arc furnace 2 or respectively comprise a following stove 2a.Electric arc furnace 2 is equipped with central authorities' revolution and lifting device 3 as already described like that, and it is designed for by the top form of implementation that has illustrated and introduces or the process of taking-up unit.The process unit comprises at least one arc electrodes system 7, and the column revolving of its wraparound commentaries on classics and lifting device 3 is above left container top or right container, and the process unit also comprises oxygen top blown spray gun 6,6c and side-blown spray gun 20 in addition.Electric energy is supplied with arc electrodes system 7 by at least one transformer 7a.Different with the top design that has illustrated in Fig. 6, revolution that the first oxygen top blown spray gun 6 (right container) and the second oxygen top blown spray gun 6c (left container) can open around a minute respectively and lifting device 3a be swivel bearing pivotally.Therefore, by illustrated structure design, when combined running, can save equipment time and maintenance time, when combined running, in a container, press the blow pig iron and of oxygen top blown method at the direct reductive iron of subordinate phase melting in electric arc furnace 2 in the fs.When 100% supplies with the pig iron, each container is all worked by the purity oxygen top-blown method in electric arc furnace 2, for example with the direct reductive iron of 10-100% (DRI) work or other phraseologies, promptly by two containers of operation or only a container process the 90-0% pig iron (being equivalent to 100% direct reductive iron) by purity oxygen top blast process for the moment or incessantly.
Can also adopt a kind of design, the single revolution and the lifting device 3 that will be used for (arc electrodes system 7 in case of necessity) the first oxygen top blown spray gun 6 and the second oxygen top blown spray gun 6c for example are installed in and are between the container in the revolution on the 1a of axis and lifting device 3 columns.
Fig. 7 A is illustrated respectively in time diagram and stirs known mode of operation such as operation, blowing and melting in one " loop inner jar 1 " (or " loop inner jar 2 ").Here based on one or two oxygen top blown spray gun 6,6c and the arc electrodes system 7 of using is provided.The blow-time of each container (B) continues identical length with smelting time (E) under the situation that counts the equipment time, to reach maximum productivity.This consistence can be especially is 40% to 60% to reach in the pig iron (RE) and direct reductive iron (DRI) ratio of mixture.By discharging 32 timed intervals 33 that draw between molten steel 10 twice discharging at that time constantly.
The time shaft of " second container 2 in the loop " half period that just in time offsets.Stirring operation in each container causes two graph interlinkages, and thereby causes being relative to each other.Interference (blow-time and smelting time do not wait) a line internal procedure has influence on another line immediately, otherwise or.On the one hand the consistence of blow-time and smelting time and on the other hand this dual interlinkage of the synchronism between two graphs serious disturbance susceptibility is arranged, and thereby in fact can cause the production fault.
With above at Fig. 7 A illustrated stirring operation compare, Fig. 7 B is illustrated respectively in the purity oxygen top blast process (B) in " container 1 in the loop " or " container 2 in the loop ", wherein can take place a kind of by Fig. 7 B as that purity oxygen top blast process that carried out or that carried out in each container in electric arc furnace in converter.For this reason, for example when the blast furnace oepration at full load and for example when equipment of direct reduction breaks down 100% pig iron be precondition.Therefore in " loop inner jar 1 " and " loop inner jar 2 " these two containers, press oxygen top blown method (B) work, thereby after pig iron charging, always irrespectively implement blowing process (B) with another container.Opposite with the method for pressing Fig. 7 A, the dependency of process time between first and second container does not take place in Fig. 7 B.
The precondition of process is oxygen top blown spray gun 6 and 6C and arc electrodes system 7 in Fig. 7 C, so that the prepared filler pig iron and in the direct reductive iron of ratio between 10% and 100% pig iron.Obviously, can carry out arbitrarily and independently of one another in two graph internal procedure step blowings (B) and melting (E).Interference only limits to melting at that time and does not propagate on the contrary with method among Fig. 7 A, neither imports in the graph also not propagate into another graph by this graph.
Fig. 7 D represents only to utilize the situation of a container (" loop inner jar 1 "), and the situation of direct reductive iron and/or scrap iron exactly only is provided.When only having an arc electrodes system 7, can be only with a container work.Therefore (" loop inner jar 2 ") neither indicates blow-time also not indicate smelting time.
In a word, the different mode of operation by Fig. 7 B-7D causes the more raw steel of coming out of the stove every day as can be seen, and method (technology) has more handiness and allows this method to be adapted to situations different in the operational process.
Reference numerals list
1 twin containers equipment; Axis between the 1a container; 2 electric arc furnaces; Stove under the 2a/end stove; The upper stove of 2b/top stove; 3 revolution and lowering or hoisting gears; The revolution that 3a separates and lowering or hoisting gear; 4 device for revolving and driving; 5 lifting drives; 6 first oxygen top blown spray guns; 6a oxygen top blown jet; The 6b nozzle; The 6c second oxygen top blown spray gun; 7 arc electrodes systems; The 7a transformer; 8 type of furnaces; 9 furnace linings; 10 molten steel; 11 slags; The layout of rushing brick is blown in 12 bottoms; 13 container bottoms; 14 bottoms are blown and are rushed brick; 14a upper punch free jet; 15 pool depths; The pool depth that 15a strengthens; 15b punching out bowl-type bottom; 16 minimum ranges; 17 melt tank edges; 18 distances; Center, 19 molten bath; 20 side-blown spray guns; 20a Self comsuming side-blown spray gun; 21 bronze medals or outer steel shell etc.; 22 liquid cooling pipes; 23 stove weeks; The bottom tapping hole of 24 off-centre; 25 closed valves; 26 chute tiling arrangements; 27 can rotating circumferential segment; 28 slag notches; The 28a cleanout door; 29 exhaust outlets; 30 furnace superintendents; 31 container handlings; 32 dischargings constantly; The time interval between 33 twice discharging; The B blow-time; The E smelting time; The RE pig iron; The iron of DRI direct-reduction
Claims (14)
1. method of under the situation of using twin containers equipment (1), producing common or fine different mass steel, described equipment comprises the revolution and the lifting device (3) that are used to introduce or take out the process unit, wherein the type of furnace (8) of furnace lining (9) is pressed the favourable flow condition design of molten steel (10) and/or slag (11), mode is: the layout (12) in following stove (2a) bottom (13) is provided with the bottom and blows towards brick (14), this layout is blown towards the interaction between the upper punch free jet (14a) of brick (14) according to oxygen top blown jet (6a) and bottom and is determined, it is characterized in that, at pool depth (15) is under the situation of about 1000mm to 1800mm, at the nozzle (6b) of oxygen top blown spray gun (6) during with respect to the blowing angle α of vertical line=15 °-40 °, the bottom blow towards the upper punch free jet (14a) of brick (14) be adjusted into respectively one 2/3 minor increment (16) in, arrive melt tank edge (17) and with one 1/3 distance (18) to center, molten bath (19), and described upper punch free jet (14a) blows towards the maximum 2Nm of brick (14) with per minute and every bottom
3Argon or nitrogen constitute.
2. in accordance with the method for claim 1, it is characterized in that, additionally be blown into oxygen by a angle at refining stage with respect to 5 ° to 45 ° at sea line by inserting the following side-blown spray gun (20) of slag (11).
3. according to the described method in one of claim 1 or 2, it is characterized in that two containers are worked with oxygen simultaneously.
4. according to the described method of one of claim 1 to 3, it is characterized in that, at minimum pool depth during for about 1000mm to 1800mm, by oxygen top blown spray gun (6) with 100-500Nm
3/ min is blown into oxygen.
5. produce equipment common or fine different mass steel for one kind, comprise two metallurgical tanks, a revolution and a lifting device (3) that is used to introduce or take out the process unit is set between container, wherein the type of furnace (8) of furnace lining (9) is pressed in the molten steel (10) and/or the interior favourable flow condition design of slag (11), mode is: the layout (12) in following stove (2a) bottom (13) is provided with the bottom and blows towards brick (14), this layout is blown towards the interaction between the upper punch free jet (14a) of brick (14) according to oxygen top blown jet (6a) and bottom and is determined, it is characterized in that the have an appointment pool depth (15) of 1000mm to 1800mm of following stove (2a); When arranging that (12) are rounded substantially, the bottom blow towards brick (14) be set to one 2/3 minor increment (16) in, to arrive respectively melt tank edge (17) and with one 1/3 distance (18) to center, molten bath (19); The nozzle (6b) of oxygen top blown spray gun (6) is with respect to the blowing angle α of vertical line=15 °-40 °, and upper punch free jet (14a) blows towards the maximum 2Nm of brick (14) with per minute and every bottom
3Argon or oxygen work.
6. according to the described equipment of claim 5, it is characterized in that the pool depth of increasing (15a) constitutes by the punching out bowl-type bottom (15b) or the monoblock type punching out bowl-type bottom (15b) that are connected on the container bottom (13).
7. according to the described equipment in one of claim 5 or 6, it is characterized in that the second oxygen top blown spray gun (6c) changes over to and produces axis (1a) outside one and is installed on the radius on an additional revolution that separates and the lifting device (3a).
8. according to the described equipment of one of claim 5 to 7, it is characterized in that the last stove (2b) that is connected down on the stove (2a) is made of the seamless distance of refrigerative copper shell (21), cold drawing, Tong Bi, fire-resistant wallboard and/or liquid cooling pipe (22) ground.
9. according to the described equipment of one of claim 5 to 8, it is characterized in that the side-blown spray gun of arranging along the ground that distributes in stove week (23) (20) passes the corresponding wall of stove (2b).
10. according to the described equipment of claim 7, it is characterized in that the side-blown spray gun (20) that passes cleanout door (28a) is designed to consumable formula side-blown spray gun (20a).
11., it is characterized in that for the C-steel, following stove (2a) is provided with eccentric bottom tap hole (24) and is used to not have the slag tapping according to the described equipment of one of claim 5 to 10.
12., it is characterized in that for stainless steel, following stove (2a) is designed to chute tiling arrangement (26) according to the described equipment of one of claim 5 to 11, comprise one of following stove (2a) can on turn over and the circumferential segment (27) of commentaries on classics down.
13., it is characterized in that the tapping district of chute tiling arrangement (26) is provided with a molten steel that is used for the no slag tapping of molten steel (10) and separates chute with slag according to the described equipment of one of claim 5 to 12.
14., it is characterized in that two metallurgical tanks are made of electric arc furnace (2) according to the described equipment of one of claim 5 to 13, they are respectively equipped with the transformer (7a) of oneself in case of necessity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004016681.1 | 2004-04-05 | ||
| DE102004016681A DE102004016681A1 (en) | 2004-04-05 | 2004-04-05 | Processes and equipment for producing and increasing the annual production volume of bulk steel or high grade steel grades in a two-vessel plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1985011A true CN1985011A (en) | 2007-06-20 |
Family
ID=34980097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800141526A Pending CN1985011A (en) | 2004-04-05 | 2005-04-04 | Method and installation for producing and increasing the annual production yield of large-scale steel products or high-quality steel products in a two-vessel installation |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1985011A (en) |
| DE (2) | DE102004016681A1 (en) |
| RU (1) | RU2006139089A (en) |
| WO (1) | WO2005098053A2 (en) |
| ZA (1) | ZA200608242B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429303A (en) * | 2015-03-30 | 2017-12-01 | 杰富意钢铁株式会社 | Push up operating method of the bottom with blow converter |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361465B (en) * | 2012-03-27 | 2016-01-27 | 山西太钢不锈钢股份有限公司 | A kind of arc furnace steelmaking process and steel-smelting device thereof |
| DE102021214227A1 (en) * | 2021-12-13 | 2023-06-15 | Sms Group Gmbh | Melting unit for steel production with a tapping weight between 60 t and 350 t |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0598331A (en) * | 1991-10-04 | 1993-04-20 | Sumitomo Metal Ind Ltd | Blowing operation method for oxygen converter |
| DE19545831C2 (en) * | 1995-12-08 | 2000-09-07 | Sms Demag Ag | Process for operating a double-vessel arc furnace system and double-vessel arc furnace |
| DE10209472B4 (en) * | 2002-03-05 | 2004-08-26 | Sms Demag Ag | Process for producing stainless steel, in particular stainless steel containing chromium or nickel chromium |
-
2004
- 2004-04-05 DE DE102004016681A patent/DE102004016681A1/en not_active Withdrawn
-
2005
- 2005-04-04 RU RU2006139089/02A patent/RU2006139089A/en not_active Application Discontinuation
- 2005-04-04 CN CNA2005800141526A patent/CN1985011A/en active Pending
- 2005-04-04 DE DE112005001464T patent/DE112005001464A5/en not_active Withdrawn
- 2005-04-04 WO PCT/DE2005/000596 patent/WO2005098053A2/en active Application Filing
-
2006
- 2006-10-04 ZA ZA200608242A patent/ZA200608242B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429303A (en) * | 2015-03-30 | 2017-12-01 | 杰富意钢铁株式会社 | Push up operating method of the bottom with blow converter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112005001464A5 (en) | 2007-05-24 |
| WO2005098053A2 (en) | 2005-10-20 |
| DE102004016681A1 (en) | 2005-12-22 |
| ZA200608242B (en) | 2008-04-30 |
| RU2006139089A (en) | 2008-05-20 |
| WO2005098053A3 (en) | 2006-05-11 |
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