CN108543940A - A kind of molten steel pot of non-bonnet (NB) plate is along masonry construction and construction method - Google Patents
A kind of molten steel pot of non-bonnet (NB) plate is along masonry construction and construction method Download PDFInfo
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- CN108543940A CN108543940A CN201810418134.3A CN201810418134A CN108543940A CN 108543940 A CN108543940 A CN 108543940A CN 201810418134 A CN201810418134 A CN 201810418134A CN 108543940 A CN108543940 A CN 108543940A
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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
- B22D41/02—Linings
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Abstract
The present invention provides a kind of molten steel pot of non-bonnet (NB) plate along masonry construction and construction method.A kind of molten steel pot of the non-bonnet (NB) plate along masonry construction include build by laying bricks or stones tank skin working lining the top one circle tank along brick, be distributed in tank along steel shell inner wall multiple support anchoring pieces and tank along pouring material, the tank is along the special-shaped brick body that brick is interior high outer bottom, its tank is less than the tank edge of steel shell along the top surface of brick, and every piece of tank is along the inclined face in the side of brick towards steel shell.When it is specifically built by laying bricks or stones：A circle tank is built by laying bricks or stones along brick building tank skin working lining top layer by laying bricks or stones, again multiple support anchoring pieces are welded along position along steel shell tank, then hang successively film, pour tank along pouring material, vibrate, health, form complete tank along portion after baking, tank is completely embedded by multiple support anchoring pieces along portion.The configuration of the present invention is simple, easy for construction, construction quality is more prone to control, and improves the durability and using effect of ladle, increases safety coefficient.
Description
Technical field
It is held the present invention relates to steel mill molten steel and cast ladle, and in particular to a kind of molten steel pot of non-bonnet (NB) plate
Along masonry construction and construction method.
Technical background
Ladle is that molten steel is held in steelmaking process, for refining or the container of cast steel.It, which has, holds, refines, turning
The functions such as fortune, heat preservation.The molten steel smelted is contained in ladle, is transported to corresponding station, is used as needed or directly
It is poured into a mould again in cast or after refining；Embryo material is formed, various steel are then reprocessed into.
Ladle in holding molten steel or refining process, tank body refractory material by high temperature, gravitational thrusts, chemical erosion,
A series of cross influence of effects such as expansion after planted agent's force effect, material caused by temperature change dramatically are heated, therefore molten steel
Tank liner body refractory material easily damages.The refractory material that especially molten steel pot is continued to use, due to its location of and construction and
The requirement used determines that it is more fragile.
The tank of ladle is the topmost in ladle along masonry construction, complete mainly for the protection of ladle top,
In order to avoid being influenced because of high temperature, the refractory material of tank skin will produce expansion, generally can push down tank skin along setting cover clamp in tank
Refractory material, to reduce the influence to safe handling that expansion joint (E.J.) is brought.The building construction on its tank edge is typically with refractory brick by tank
Wall working lining build to away from tank along certain altitude, with fill loose refractory between plate and refractory brick along the tank of welding in tank and
It is formed, masonry construction is shown in shown in Fig. 3.
Existing tank can not meet requirement well along construction method, and existing major defect is as follows：(1) by
In provided with cover board, needing the cloth refractory material between brick and cover clamp, it can make troubles to construction and construction quality is not easily-controllable
System；(2) it is easily damaged because commonly using " hook " cleaning tank when wanting along the slag worn, tank edge is hung in use；(3) due to gland
Steel plate is directly to be contacted with the slag brought when tapping, therefore cover clamp is easily damaged, and gland effect is not fine；(4) brick with dissipate
Ring-like seam is also easy to produce between shape refractory material, brick and brick --- it causes to ooze steel, be adversely affected to safety belt.
Invention content
In order to solve the deficiency during above-mentioned construction and use, the present invention provides a kind of molten steel pot edge of non-bonnet (NB) plate
Masonry construction and construction method, the molten steel pot are not provided with gland steel plate along masonry construction, and pouring material is directly cast in tank edge
It on brick, pours conveniently, and can play the role of the expansion that gland carrys out pressed material along one circle anchoring piece of setting in tank, and not
It can be in direct contact with molten steel, durability is strong, can improve using effect, increases safety coefficient.
The present invention is directed to provides a kind of molten steel pot of non-bonnet (NB) plate along masonry construction to the deficiencies in the prior art, special
Sign is：The tank along masonry construction include build by laying bricks or stones tank skin working lining the top one circle tank along brick, be distributed in tank along steel
The multiple support anchoring pieces and tank of inner walls are along pouring material, and the tank is along the special-shaped brick body that brick is interior high outer bottom, and tank is along brick
Top surface be less than the tank edge of steel shell, every piece of tank inclines along the inclined face in the side of brick towards steel shell, polylith tank along brick
An annular up concave type tank is formed between inclined-plane and steel shell along pouring material filled cavity, the multiple support anchoring piece is distributed in
Tank has gap along pouring material filled cavity in same level between adjacent supports anchoring piece, each to support the outer of anchoring piece
End is fixed on the inner wall of steel shell, extends in the horizontal direction tank of inner end, and elongated end is not contacted with tank along the inclined surface of brick, described
Tank continues to fill up to the top surface of steel shell after pouring material filled cavity is filled up completely by pouring material and forms one by support anchoring
Part and tank are along the completely inbuilt tank of brick along portion.
The present invention preferably technical solution：The multiple support anchoring piece is fixed on steel shell away from 80~120mm of tank mouth
Position, and be equally spaced, the spacing of two neighboring support anchoring piece is 30~40cm；Each support anchoring piece is bar steel plate
It is made, along one end of brick inclined surface is in the edge of a knife shape that tilts down towards tank, each top edge for supporting anchoring piece is higher than tank
Along the upper surface of brick, lower edge, along the upper surface of brick, is higher than inclined surface lower edge of the tank along brick less than tank.
The present invention preferably technical solution：The tank is along the shape that brick is after cutting off one of angle by cuboid magnesia carbon brick body
At the low special-shaped brick body of the high other end in one end, and the position for cutting off angle forms downward inclined surface, the inclination angle of the inclined surface
It is 45~60 ° to spend a.
The present invention preferably technical solution：The tank skin working lining is the magnesium carbon of the laying fireproof bricks layer and top by lower part
Slag line brick masonry layer forms, wherein the height of the magnesium carbon slag line brick masonry layer has 10-12 rings.
The present invention preferably technical solution：The thickness of each support anchoring piece is 10mm, high 120mm, and use is heat-resisting
Steel plate is made, and edge of a knife inclination angle b is 30~45 °.
The present invention preferably technical solution：Puzzle joint of the installation site of each support anchoring piece with tank along brick is staggered.
Construction method of the molten steel pot of a kind of non-bonnet (NB) plate provided by the invention along masonry construction, it is characterised in that specific
Steps are as follows：
(1) it builds tank skin working lining by laying bricks or stones according to conventional masonry way, when building a last ring by laying bricks or stones, is carried out along brick using tank
It builds by laying bricks or stones, the tank is along the low special shaped brick of the high other end in one end that brick is that cuboid magnesia carbon brick body cuts off the formation behind one of angle
Body, and the position for cutting off angle forms downward inclined surface, the tank laid along its inclined surface of brick towards steel shell, and and steel
A recessed cavity of annular is formed between shell processed；
(2) multiple support anchoring pieces are welded along position along steel shell tank, multiple support anchoring pieces are distributed in a ring
On same plane, distance apart from steel shell tank mouth is not less than 80mm, and the spacing between adjacent supports anchoring piece be 30~
40cm, it is each that anchoring piece is supported not contacted along brick with tank；
(3) tank is lifted into tank along upper, the butter of 2~3mm of brush last layer on mold along fetal membrane with overhead traveling crane；
(4) it is poured along castable using High-Alumina tank, is stirred for uniformly, to be then stirred before pouring
Castable injects tank along fetal membrane, which is filled up completely the recessed cavity of annular in step (1), and fills to steel shell
It is at the tank mouth of body, multiple support anchoring pieces in step (2) are completely embedded；
(5) with vibrating head by filled pouring material vibratory compaction, each point time of vibration is uniform, pico- to be vibrated to surface
When bleeding, vibrating head is slowly extracted out, avoid generating hole；
(6) after vibration is completed, health demoulds after 8~12 hours, and send to tank position, is dried in the case of not lid lid
4~9 hours roasting, baking temperature is 300~600 DEG C.
The present invention preferably technical solution：Tank skin working lining the 27th ring to the 38th ring in the step (1), which is built, uses magnesium
Carbon slag line brick masonry forms, and the 39th ring is using magnesium canister along brick masonry.
The present invention preferably technical solution：Support anchoring piece in the step (2) has 42, is equidistantly welded on steel shell
On body, heat-resisting steel sheet and plate of each anchoring piece by thickness by 10mm, high 120mm is made, towards tank along one end of brick in dipping down
Oblique edge of a knife shape；The lower part of multiple support anchoring pieces is placed in tank in step (1) and is formed between the inclined surface and steel shell of brick
The recessed cavity of annular in, Edge Distance tank mouth height is 80~120mm thereon.Anchoring piece is supported specifically to rotate in the present invention
Quantity, size, shape, material selection should on meet cover the expansion of tank skin premised on, to ensure not permeable steel, not leak
For the purpose of steel.
The present invention preferably technical solution：In the step (4) pouring material stirring be it is first dry stir 2~3 minutes after, then
Add water is wet to stir 5~7 minutes.
Beneficial effects of the present invention：
1. the tank skin top layer refractory brick of the present invention is revised as the opposite sex by rectangle, to increase contact when castable pours
Area improves the stability that castable is contacted with refractory brick, while making the brick top of most last layer into external high the inside low shape
The tank of shape is along brick, and when cleaning hangs over the residual steel on tank edge, tank is conducive to keep the complete of tank edge, and can play along being hardly damaged
The effect for increasing castable stability is conducive to improve tank along intensity；
2. the tank edge of the present invention builds framework by laying bricks or stones and eliminates tank along the top gland steel plate, tank edge is directly poured into castable
On brick, and a circle anchoring piece of first burn-oning on ladle tank skin steel plate before pouring, then pour again；These anchorings can be utilized
Part plays the role of gland, suppresses the expansion of refractory material, but does not interfere with the casting process of pouring material, and pouring material can be straight
It is connected on tank to pour along brick, can be good at controlling construction quality, pour more convenient, and lid steel plate and residue pile can be solved
Between gap, castable filling constructional difficulties, material combine not tight the problem of easily collapsing, reduce the possibility for oozing steel, bleed-out；
3. the anchoring piece of the present invention is in tank after having poured, pouring material is higher than the height of support anchoring piece at least
80mm will support anchoring piece to be embedded in castable, can play the role of skeleton, increases the integral strength for pouring tank edge；Simultaneously
The anchoring piece being embedded in castable is not in direct contact, usability, durability are anti-because being protected by these refractory materials with molten steel
And it is improved；
4. vibrating after the castable construction in the present invention, it is allowed to form an entirety with support anchoring piece, then leads to
The baking for crossing certain temperature reaches certain intensity, improves the service life on tank edge；
5. the support anchoring piece in the present invention uses the steel plate with certain heat resistance to be made, it is welded on ladle ladle bowl
On steel plate, and upper and lower directions is arranged, the spacing of distribution can not only play the purpose of compacting refractory expansion, but also can ensure that and reach
To the requirement of use intensity, and pouring for castable is not interfered with.
The configuration of the present invention is simple, easy for construction, construction quality is more prone to control, and improves the durability of ladle
And using effect, increase safety coefficient.
Description of the drawings
Fig. 1 is structural schematic diagram of the ladle filling tank after pouring material in the present invention；
The molten steel pot of Fig. 2 present invention is along masonry construction enlarged diagram；
Fig. 3 is existing molten steel pot along masonry construction schematic diagram
Fig. 4 is BB sectional views in Fig. 1；
Fig. 5 is the structural schematic diagram that the ladle in the present invention is not filled by tank along pouring material；
Fig. 6 is AA sectional views in Fig. 1；
Fig. 7 is structural schematic diagram of the irregular can along brick；
Fig. 8 is the structural schematic diagram for supporting anchoring piece.
In figure：1-steel shell, 2-tanks are along brick, 3-support anchoring pieces, and 4-tanks are along pouring material, 5-inclined surface, and 6-
Pouring material filled cavity, 7-insulating layers, 8-permanent layers, 9-tank skin working linings, 10-pocket blocks, 11-air bricks, 12-
Shock plate, 13-corundum reinforcements, 14-gland steel plates.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings, and as shown in Figure 1 and Figure 5, the ladle in the present invention is specific
Including steel shell 1 and inside lining building structure, the inside lining building structure includes tank bottom masonry construction, tank skin masonry construction and tank
Along masonry construction, the tank bottom masonry construction and tank skin masonry construction are from outside to inside successively by insulating layer 7 and permanent layer 8, in tank
The inside of wall masonry construction is equipped with tank skin working lining 9, and 9 lower part of brick working lining is formed using laying fireproof bricks, and top uses magnesium
Carbon slag line brick masonry forms, wherein the height of the magnesium carbon slag line brick masonry layer has 10-12 rings, the tank bottom masonry construction also to wrap
Pocket block 10, air brick 11 and shock plate 12 are included, the shock plate 12 is arranged in tank bottom central part, and in pocket block
10, it is filled with corundum reinforcement 13 around air brick 11 and shock plate 12.
As shown in Figure 2 and Figure 5, the tank includes building by laying bricks or stones on a circle tank edge of 9 the top of tank skin working lining along masonry construction
Brick 2, be distributed in tank along 1 inner wall of steel shell multiple support anchoring pieces 3 and tank along pouring material 4, the tank is interior high outer along brick 2
The special-shaped brick body at bottom, tank are less than the tank edge of steel shell 1 along the top surface of brick 2, and every piece of tank is along brick 2 towards the one of steel shell 1
The inclined face 5 in side, polylith tank form an annular up concave type tank between the inclined surface of brick 25 and steel shell 1 and are filled out along pouring material
Fill chamber 6.As shown in fig. 7, the tank is along the high other end in one end that brick 2 is formation after cutting off one of angle by cuboid brick body
Low special-shaped brick body, and the position for cutting off angle forms downward inclined surface 5, the angle of inclination a of the inclined surface 5 is 45~60 °.
As shown in figure 8, each support anchoring piece 3 is made of steel plate, and the wherein inclined edge of a knife shape in one end, thickness 10mm, height
120mm is made of heat-resisting steel sheet and plate, and edge of a knife inclination angle b is 30~45 °.
As shown in Figure 3 and Figure 5, the multiple support anchoring piece 3 is distributed in tank same level along pouring material filled cavity 6
On face, each puzzle joint for supporting the installation site of anchoring piece 3 with tank along brick 2 is staggered, and each outer end for supporting anchoring piece 3 is fixed on
The inner wall of steel shell 1, inner end horizontal direction tank is interior to be extended, and elongated end is not contacted with tank along the inclined surface of brick 25, and multiple
Support anchoring piece 3 is equally spaced, and the spacing of two neighboring support anchoring piece 3 is 30~40cm.As shown in Fig. 2, each supporting anchor
Firmware 3 is horizontally fixed on steel shell 1, the edge of a knife downward, it is each support the setting of anchoring piece 3 away from tank along top surface 80~
The position of 120mm, higher than tank along the upper surface of brick 2, lower edge, along the upper surface of brick 2, is higher than tank along brick 2 less than tank for top edge
Inclined surface lower edge.The tank continues to fill up after pouring material filled cavity 6 is filled up completely by pouring material 4 to higher than support anchor
Firmware 3 and tank form tank along portion, tank will support anchor along the either flush of the top surface and steel shell 1 in portion along the position of brick 2
Firmware 3 is completely embedded, and is more than the distance of 80~120mm along brick 2 higher than tank.
The construction technology of the present invention is further illustrated with reference to embodiment
Embodiment：It is tested for the construction technology in the present invention in factory of Wuhan Iron and Steel Plant Co., Ltd, the tank of hot-metal bottle
Bottom masonry construction and tank skin masonry construction are normally built by laying bricks or stones according to the building method of existing hot-metal bottle, and tank is along masonry construction
Construction process be：Building tank skin, --- --- cope down film --- pours --- demoulding --- baking to weldering anchoring piece.Specific steps are such as
Under：
(1) first use laying fireproof bricks tank skin working lining the 1st to 26 ring, brick the 27th ring of working lining 9 of tank skin extremely
38th ring builds 12 ring magnesium carbon residue piles by laying bricks or stones, and the 39th ring starts to build magnesium canister along brick 2；The magnesium canister is cuboid magnesium carbon along brick 2
Brick body cuts off the low special-shaped brick body of the high other end in one end of the formation behind one of angle, and the position for cutting off angle formed it is downward
Inclined surface, the tank laid along its inclined surface of brick towards steel shell, and between steel shell formed an annular it is recessed
Cavity；
(2) along tank along 42 support anchoring pieces 3 of uniform welding, (shape according to tank along brick will support anchoring piece 3 to be designed to
The edge of a knife type of one thickness 10mm, high 120mm, selection is common heat-resisting steels), and anchoring piece 3 will each be supported equidistantly to weld
On the same annular surface of 1 inner wall of steel shell, support anchoring piece 3 is 80~120mm away from tank mouth distance, it is ensured that has certain thickness
Refractory material be used for protect steel anchoring piece；
(3) tank is lifted into tank along upper, the butter of 2~3mm of brush last layer on mold along fetal membrane with overhead traveling crane, fetal membrane requires dress
Directly, just, in order to avoid the tank poured collapses along drawing when demoulding, loose tool is not greater than 10mm to dress to edge error when installation；
(4) it is poured along castable using High-Alumina tank, tank needs to stir evenly along castable before pouring, tool
The stirring of body be it is dry after first siccative is added stir 2 minutes, then plus water is wet stirs 6 minutes, then by the tank stirred along castable note
Enter to tank along fetal membrane, it is complete that the tank in step (1) is formed between brick inclined surface and steel shell to a recessed cavity of annular
After full packing, continue to pour filling to the filling mouth of steel shell 1, forms the tank for being higher than tank along 2 top surface of brick along portion, tank is supported along portion
Anchoring piece 3 is completely embedded；
(5) it after pouring completion, vibratory compaction, each point time of vibration uniformly will be arrived everywhere with vibration using vibrating head
The pico- bleeding in surface is advisable, and after the completion of vibrating, slowly extracts vibrating head out, in order to avoid generate hole；
(6) and then naturally it is demoulded after placing health 8~12 hours, has to check for confirming before demoulding ensureing not take off and collapse, then
It is passed to the baking of tank position, is toasted 4 hours in not lid lid, baking temperature is 300~600 DEG C.
Test proves that the method in the present embodiment can meet production just in the daily normal use of the steel mill
Often turnover, and a cause tank does not up to the present occur along the safety accident occurred using abnormal.
Claims (10)
1. a kind of molten steel pot of non-bonnet (NB) plate is along masonry construction, it is characterised in that：The tank includes building by laying bricks or stones along masonry construction
Tank skin working lining (9) the top one circle tank along brick (2), be distributed in multiple support anchoring pieces of the tank along steel shell (1) inner wall
(3) and tank is along pouring material (4), and the tank is less than steel shell along the special-shaped brick body that brick (2) is interior high outer bottom, tank along the top surface of brick
The tank edge of body (1), every piece of tank is along brick (2) towards the inclined face in side (5) of steel shell (1), inclination of the polylith tank along brick (2)
An annular up concave type tank is formed between face (5) and steel shell (1) along pouring material filled cavity (6), the multiple support anchoring
Part (3) is distributed in tank in pouring material filled cavity (6) interior same level, and has gap between adjacent supports anchoring piece (3), often
The outer end of a support anchoring piece (3) is fixed on the inner wall of steel shell (1), extends in the horizontal direction tank of inner end, and elongated end not with
Tank is contacted along the inclined surface (5) of brick (2), and the tank continues to fill out after pouring material filled cavity (6) is filled up completely by pouring material (4)
Being charged to the top surface formation one of steel shell (1) will support anchoring piece (3) and tank along the completely inbuilt tank of brick along portion.
2. a kind of molten steel pot of non-bonnet (NB) plate according to claim 1 is along masonry construction, it is characterised in that：It is the multiple
Support anchoring piece (3) is fixed on the position of steel shell (1) away from 80~120mm of tank mouth, and is equally spaced, two neighboring support anchor
The spacing of firmware (3) is 30~40cm；Each support anchoring piece (3) is made of bar steel plate, towards tank along brick inclined surface (5)
One end be in the edge of a knife shape that tilts down, each support the top edge of anchoring piece (3) higher than tank along the upper surface of brick (2), below
Edge, along the upper surface of brick (2), is higher than inclined surface lower edge of the tank along brick (2) less than tank.
3. a kind of molten steel pot of non-bonnet (NB) plate according to claim 1 or 2 is along masonry construction, it is characterised in that：It is described
Tank along the low special-shaped brick body of the high other end in one end that brick (2) is formation after cutting off one of angle by cuboid magnesia carbon brick body,
And the position for cutting off angle forms downward inclined surface (5), the angle of inclination a of the inclined surface (5) is 45~60 °.
4. a kind of molten steel pot of non-bonnet (NB) plate according to claim 1 or 2 is along masonry construction, it is characterised in that：It is described
Tank skin working lining (9) is made of the laying fireproof bricks layer of lower part and the magnesium carbon slag line brick masonry layer on top, wherein the magnesium carbon
The height of slag line brick masonry layer has 10-12 rings.
5. a kind of molten steel pot of non-bonnet (NB) plate according to claim 2 is along masonry construction, it is characterised in that：It is described each
It is 10mm, high 120mm to support the thickness of anchoring piece (3), is made of heat-resisting steel sheet and plate, and edge of a knife inclination angle b is 30~45 °.
6. a kind of molten steel pot of non-bonnet (NB) plate according to claim 2 is along masonry construction, it is characterised in that：Each support
Puzzle joint of the installation site of anchoring piece (3) with tank along brick (2) is staggered.
7. a kind of molten steel pot of non-bonnet (NB) plate is along the construction method of masonry construction, it is characterised in that be as follows：
(1) it builds tank skin working lining by laying bricks or stones according to conventional masonry way, when building a last ring by laying bricks or stones, is built along brick using tank
It builds, the tank is along the low special shaped brick of the high other end in one end that brick is that cuboid magnesia carbon brick body cuts off the formation behind one of angle
Body, and the position for cutting off angle forms downward inclined surface, the tank laid along its inclined surface of brick towards steel shell, and and steel
A recessed cavity of annular is formed between shell processed；
(2) multiple support anchoring pieces are welded along position along steel shell tank, multiple support anchoring pieces are distributed in same in a ring
In plane, the distance apart from steel shell tank mouth is not less than 80mm, and the spacing between adjacent supports anchoring piece is 30~40cm,
Each support anchoring piece is not contacted with tank along brick；
(3) tank is lifted into tank along upper, the butter of 2~3mm of brush last layer on mold along fetal membrane with overhead traveling crane；
(4) it is poured, is stirred for before pouring uniformly, the cast that then will be stirred along castable using High-Alumina tank
For material injection tank along fetal membrane, which is filled up completely the recessed cavity of annular in step (1), and fills to steel shell
It is at tank mouth, multiple support anchoring pieces in step (2) are completely embedded；
(5) with vibrating head by filled pouring material vibratory compaction, each point time of vibration is uniform, to be vibrated to the pico- bleeding in surface
When, it slowly extracts vibrating head out, avoids generating hole；
(6) after vibration is completed, health demoulds after 8~12 hours, and send to tank position, and 4 are toasted in the case of not lid lid
Construction of the tank along masonry construction is completed within~9 hours, baking temperature is 300~600 DEG C.
8. a kind of molten steel pot of non-bonnet (NB) plate according to claim 7 exists along the construction method of masonry construction, feature
In：Tank skin working lining the 27th ring to the 38th ring block in the step (1) is formed using magnesium carbon slag line brick masonry, and the 39th ring uses
Magnesium canister is along brick masonry.
9. a kind of molten steel pot of non-bonnet (NB) plate according to claim 7 exists along the construction method of masonry construction, feature
In：Support anchoring piece in the step (2) has 42, is equidistantly welded on steel shell, and each anchoring piece is that thickness is
10mm, high 120mm heat-resisting steel sheet and plate be made, along one end of brick be in the edge of a knife shape that tilts down towards tank；Multiple support anchorings
The lower part of part is placed in the recessed cavity of annular that tank in step (1) is formed between the inclined surface and steel shell of brick, top
Edge is 80~120mm apart from tank mouth height.
10. a kind of molten steel pot of non-bonnet (NB) plate according to claim 7 exists along the construction method of masonry construction, feature
In：In the step (4) pouring material stirring be it is first dry stir 2~3 minutes after, add water wet stir 5~7 minutes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945655A (en) * | 2019-03-26 | 2019-06-28 | 山东慧敏科技开发有限公司 | A kind of prefabricated section and furnace building process for strengthening heater for rolling steel radiant heat transfer |
| CN112974785A (en) * | 2021-02-08 | 2021-06-18 | 北京首钢股份有限公司 | Steel ladle and steel ladle building method |
| CN117020537A (en) * | 2023-09-27 | 2023-11-10 | 联峰钢铁（张家港）有限公司 | Steel bar welding device |
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| CN109945655A (en) * | 2019-03-26 | 2019-06-28 | 山东慧敏科技开发有限公司 | A kind of prefabricated section and furnace building process for strengthening heater for rolling steel radiant heat transfer |
| CN109945655B (en) * | 2019-03-26 | 2024-05-24 | 山东慧敏科技开发有限公司 | Prefabricated block for reinforcing radiation heat transfer of steel rolling heating furnace and furnace building process |
| CN112974785A (en) * | 2021-02-08 | 2021-06-18 | 北京首钢股份有限公司 | Steel ladle and steel ladle building method |
| CN117020537A (en) * | 2023-09-27 | 2023-11-10 | 联峰钢铁（张家港）有限公司 | Steel bar welding device |
| CN117020537B (en) * | 2023-09-27 | 2023-12-19 | 联峰钢铁（张家港）有限公司 | Steel bar welding device |
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