CN106513651B - Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options - Google Patents
Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options Download PDFInfo
- Publication number
- CN106513651B CN106513651B CN201710004588.1A CN201710004588A CN106513651B CN 106513651 B CN106513651 B CN 106513651B CN 201710004588 A CN201710004588 A CN 201710004588A CN 106513651 B CN106513651 B CN 106513651B
- Authority
- CN
- China
- Prior art keywords
- brick
- air brick
- hot
- metal bottle
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
A kind of hot-metal bottle air brick leakproof iron construction of present invention offer and leakproof iron air brick replacing options.The leakproof iron air brick replaces concrete operation step：First the original working lining by air brick outer rim neighbor distance not less than 600mm is built brick by laying bricks or stones and is dismantled, take out old air brick, install new air brick, new equal preset clearance between air brick surrounding and hot-metal bottle original permanent layer, the clayey ramming mass that brine reconciles is filled in gap later, and it consolidates, then it uses magnesia carbon brick to be returned by the way of wet block and builds dismounting position, ensure that there are gaps between air brick surrounding and the working lining for returning block simultaneously, and corundum gravity flow pouring material is poured in gap, then natural Health preservation is after 68 hours, into the baking stage.The configuration of the present invention is simple, building construction are convenient, and can ensure that and will not cause to leak iron phenomenon because of the replacement of air brick, and leakproof iron effect is good, avoid hot-metal bottle because of the security risk that leakage iron occurs.
Description
Technical field
The invention belongs to field of steel metallurgy, the hot-metal bottle air brick after specifically a kind of replacement for hot-metal bottle air brick
Leakproof iron construction and leakproof iron air brick replacing options.
Background technology
Molten iron is required for carrying out desulfurization pretreatment to it before entering converter, wherein excessively high to remove to be harmful into
Point --- sulphur can not only mitigate the steel-making burden of converter using Liquid Iron Pretreatment Technology, while can also optimize steelmaker
Skill, and improve the quality of steel.It is supplied into hot-metal bottle to improve the technology of molten steel quality, raising desulfuration efficiency using air brick
It is widely used when molten iron pre-processes by many steel mills since 2000, it has also become basic fundamental when molten iron pre-processes.Iron
When water pretreatment, hot-metal bottle contains molten iron and tilts (i.e. to turn over tank stake opposite inclination) to mucking machine direction is skimmed with facilitating, molten iron
Tank air brick, which is mounted on, turns over tank stake this one side, by gas make scum pour into mucking machine this on one side, reach and quickly skim effect, institute
It is determined based on following two principles with the general installation site of air brick：1) with turn over tank stake and do not interact；2) based on water mould
Effect.
General hot-metal bottle can all use two layers of resistance to material structure, and one layer is working lining, generally uses clay or aluminium carbonaceous fire resisting
Brick；One layer is permanent liner, and castable is poured with fire resisting；Air brick is generally used and is embedded in hot-metal bottle tank skin liner and permanent liner
Mode is built by laying bricks or stones, and in order to not influence the service life and effect of air brick, the mode that side fills usually is taken to be mounted on molten iron
Tank tank skin, air brick steam line pass through hot-metal bottle ladle bowl to stretch out and connect outer steam line outside tank.Hot-metal bottle working lining uses week
Phase is long, and scaling loss causes its service life shorter when the loss that air brick is generated because it is supplied and clear burning, generally in iron
4-5 air brick is needed to change in water pot working lining service life.
Currently, the new liner installation air brick of hot-metal bottle is built because it is that one is whole, globality is preferable, and the risk for leaking iron is smaller,
But the air brick re-replaced is because it need to will be filled between tank skin brick and permanent liner by the way of castable, be not one
It is whole.After repeatedly turning over tank, because it is turning over the tank stake side, under the effect of gravity, it is possible to it be caused to be loosened into tank.Ventilative
Between brick and castable and permanent liner, box hat contact position there is gap, and the gap and the overhanging ladle bowl of air brick steam line
Hole is connected to form channel.And molten iron penetrating power is stronger, easily oozes iron from the working lining brick of surrounding, the iron of infiltration is once logical into this
Road will form leakage iron accident, this brings greater risk to the safety in production of hot-metal bottle.
Invention content
The present invention easily causes the present situation of leakage iron accident for hot-metal bottle air brick, provides a kind of hot-metal bottle air brick leakproof iron
Structure and leakproof iron air brick replacing options, the method for the leakproof iron can solve the air brick after hot-metal bottle is replaced and pine occur
Dynamic or air brick filler material and permanent liner occur between gap or brick ooze iron flow distance it is shorter the problems such as, avoid because
The problem of causing to leak iron for case above.
Technical solution provided by the invention is：A kind of hot-metal bottle air brick leakproof iron construction, including hot-metal bottle tank skin
With the air brick in hot-metal bottle tank skin is set, on air brick be equipped with permeability cell, the hot-metal bottle tank skin from outside to inside successively by
Hot-metal bottle shell, permanent layer and working lining, air brick are embedded in permanent layer and working lining, and permeability cell is outside from hot-metal bottle shell
It is pierced by and extends and connect with the air supply pipe in outside, it is characterised in that：It is filled filled with ramming mass between air brick and permanent layer
Layer, is equipped with pouring material filled layer between air brick and working lining and magnesium brick returns course, and it is to use that the magnesium brick, which returns course,
Magnesium brick is built by laying bricks or stones at the working lining position of dismounting according to the normal masonry way of working lining, and the magnesium brick laid returns course
It holds together with original working lining, the pouring material filling is placed on magnesium brick and returns between course and air brick.
The present invention preferably technical solution：The ramming mass filled layer and pouring material filled layer are annular or rectangular-ambulatory-plane, packet
It overlays on outside four, the upper and lower, left and right face of air brick, the width of two filled layers is equal, is 40-60mm.
The present invention preferably technical solution：The magnesium brick return course be it is upper and lower along air brick, left using magnesia carbon brick,
Right four faces are built by laying bricks or stones, and width is more than 550mm.
The present invention preferably technical solution：The ramming mass filled layer be use proportion for 1.25 magnesium chloride brine with
Refractoriness is not less than 1730 degrees Celsius, Al2O3The clayey ramming mass filling with made of of clay tone of the content not less than 45% is smash
The filled layer formed is beaten, the pouring material filled layer (6) is to pour the filled layer to be formed using corundum based self-flow castable；It is described
Magnesium chloride brine is by water and magnesium chloride according to mass ratio 1:1.25 ratio mixed preparing forms, the magnesium chloride brine
Additive amount be clay ash weight 16.5-16.8%.
A kind of leakproof iron hot-metal bottle air brick replacing options provided by the invention, it is characterised in that be as follows：
(1) when replacing hot-metal bottle air brick, air brick outer rim neighbor distance is first not less than to the original working lining of 600mm
It builds brick by laying bricks or stones to dismantle, then conventionally takes out old air brick, and being contacted with new lining-up brick in range will be removed
Old working lining is built residue, residual ash on brick brick door by laying bricks or stones and is removed totally；
(2) the clayey mud of 2-3mm is smeared in the new air brick hot-metal bottle ladle bowl inner surface of installation, then air brick is pacified
It is placed on above clayey mud, it is flat with horizon rule water detection, ensure that air brick face and working lining brick face dress paperback are neat, new air brick
The gap of reserved 40-60mm between upper and lower, left and right face and hot-metal bottle original permanent layer；
(3) the clayey ramming that brine reconciles is filled in gap between the periphery of new air brick and hot-metal bottle original permanent layer
Material, is layered during filling and consolidates ramming mass, and it is closely knit that filling is completed in gap；
(4) it carries out back building by the way of wet block in the work layer region that air brick is removed up and down using magnesia carbon brick,
Brick is built by laying bricks or stones according to original working lining build direction first build the magnesia carbon brick at air brick or more position by laying bricks or stones, then build air brick by laying bricks or stones or so position
Magnesia carbon brick；Magnesia carbon brick and original working lining lining brick use High-Alumina or clayey chamotte for adhesive between building in building process,
With magnesium carbonaceous chamotte it is adhesive between magnesia carbon brick；It returns the magnesia carbon brick built to be linked together with the brick of building by laying bricks or stones in original working lining, together
When ensure air brick upper and lower, left and right face return build working lining between there are the gaps of 40-60mm；
(5) corundum gravity flow pouring material is poured in air brick and the gap returned between building working lining, then natural Health preservation
After 6-8 hours, into the baking stage.
The present invention preferably technical solution：The dismounting of original working lining is specifically first by fitted and breathable in the step (3)
One piece of working lining of brick surrounding is built brick by laying bricks or stones and is smashed with pneumatic pick, removes brickbat, then at this neutral gear along air brick surrounding by working lining
Lining brick is removed.
The specific preparation method of clayey ramming mass that brine reconciles in the present invention is as follows：
(1) use water and magnesium chloride according to mass ratio 1:1.25 ratio is configured to the brine that proportion is 1.25；
(2) refractoriness is selected to be not less than 1730 degrees Celsius, Al2O3Clay ash of the content not less than 45%, places it in ash
In disk, brine prepared in (1) the step of clay ash weight 16.5-16.8% in addition disk, using manually stirring evenly, until arriving
The ramming mass holding of reconciliation is agglomerating, and stirring completion, is configured to the clayey ramming mass of brine reconciliation when throwing into powder.
The present invention preferably technical solution：Magnesia carbon brick in the step (4) will ensure that smooth vertical and horizontal, mortar is full when building by laying bricks or stones
Full, brickwork joint is less than 2mm.
The present invention preferably technical solution：By three pieces of original work that air brick upper and lower, left and right are adjacent in step (1)
Layer builds brick dismounting by laying bricks or stones；Using wet block mode in air brick three pieces of magnesia carbon bricks of each up and down time block in step (4).
The present invention preferably technical solution：The baking stage first uses small fire to toast 2 hours in step (6), then using big
Fire baking 2 hours.
Beneficial effects of the present invention：
(1) present invention is replacing hot-metal bottle air brick, will be served as a contrast not less than 600mm working linings with air brick outer neighbor distance
Brick is removed, and to increase the flow distance oozed between brick outside iron to tank, promotes its cooled and solidified in lining, is prevented ventilative after replacing
Brick loosens；
(2) present invention fills ramming mass between air brick and permanent layer, and ramming mass filled layer is not easy to move with outside air brick
And move outside, so that it is not become gap between permanent layer；
(3) present invention builds the larger magnesia lining brick of the coefficient of expansion by laying bricks or stones, increases the tight of air brick at the working lining brick of dismounting
Gu degree is not easy outer shifting, while will not ooze iron between magnesia lining brick.
The configuration of the present invention is simple, building construction are convenient, and can ensure that will not lead to leak iron because of the replacement of air brick shows
As, and leakproof iron effect is good, avoids the security risk of hot-metal bottle occurred because of leakage iron.
Illustrate book
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the schematic cross-section of working lining of the present invention.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples.A kind of hot-metal bottle as shown in Figures 1 and 2
Air brick leakproof iron construction, including hot-metal bottle tank skin and the air brick 1 in hot-metal bottle tank skin is set, it is equipped on air brick 1 saturating
Tracheae 4, from outside to inside successively by hot-metal bottle shell 8, permanent layer 2 and working lining 3, air brick 1 is embedded the hot-metal bottle tank skin
In permanent layer 2 and working lining 3, permeability cell 4 is pierced by and extends from hot-metal bottle shell 8 and connect with the air supply pipe in outside outward, special
Sign is：Ramming mass filled layer 5 is filled between air brick 1 and permanent layer 2, the ramming mass filled layer 5 is to use brine
The filled layer that the clayey ramming mass filling ramming of reconciliation is formed；Pouring material filled layer is equipped between air brick 1 and working lining 3
6 and magnesium brick return course 7, the pouring material filled layer 6 is to pour the filled layer to be formed using corundum based self-flow castable；It is described
Ramming mass filled layer 5 and pouring material filled layer 6 are annular or rectangular-ambulatory-plane, are coated on outside four, the upper and lower, left and right face of air brick,
The width of two filled layers is equal, is 40-60mm.It is the working lining 3 using magnesium brick in dismounting that the magnesium brick, which returns course 7,
Position is built by laying bricks or stones according to the masonry way of the wet block of working lining, and the magnesium brick laid returns course 7 and is linked as with original working lining
One entirety, the pouring material filled layer 6 are placed in magnesium brick and return between course 7 and air brick 1.Magnesium brick returns course 7
It is built by laying bricks or stones along four, air brick upper and lower, left and right face using magnesia carbon brick, width is more than 550mm.
The specific preparation method of clayey ramming mass that the brine reconciles is as follows：
(1) use water and magnesium chloride according to mass ratio 1:1.25 ratio is configured to the brine that proportion is 1.25；
(2) refractoriness is selected to be not less than 1730 degrees Celsius, Al2O3Clay ash of the content not less than 45%, places it in ash
In disk, brine prepared in (1) the step of clay ash weight 16.5-16.8% in addition disk, using manually stirring evenly, until arriving
The ramming mass holding of reconciliation is agglomerating, and stirring completion, is configured to the clayey ramming mass of brine reconciliation when throwing into powder.
The present invention specifically carries out implementation experiment in certain steel mill, and stringent technology stream has been formulated according to construction method
Journey and quality control specifications, achieve and complete success.Its Specific construction process is as follows：
(1) after hot-metal bottle is cooled to room temperature, the replacement of air brick is carried out, first by one piece of work of fitted and breathable brick surrounding
Layer is built brick by laying bricks or stones and is smashed with pneumatic pick, removes brickbat, then at this neutral gear along air brick surrounding by original air brick upper and lower, left and right phase
Three pieces of adjacent original working linings are built brick by laying bricks or stones and are dismantled, and take out old air brick；
(2) the various foreign matters removed in range are cleaned out, the original working lining especially removed in range builds brick by laying bricks or stones
Residue, residual ash are removed clean on the brick door contacted with new lining-up brick；
(3) the clayey mud of 2-3mm is smeared in the new air brick hot-metal bottle ladle bowl inner surface of installation, then air brick is pacified
It is placed on above clayey mud, it is flat with horizon rule water detection, ensure that air brick face and working lining brick face dress paperback are neat, new air brick
The gap of reserved 40-60mm between upper and lower, left and right face and hot-metal bottle original permanent layer；
(4) the clayey ramming that brine reconciles is filled in gap between the periphery of new air brick and hot-metal bottle original permanent layer
Material, point three layers of clayey ramming mass for reconciling phosphate consolidate during filling, and it is closely knit that filling is completed in gap；
(5) it carries out back building by the way of wet block in the work layer region that air brick is removed up and down using magnesia carbon brick,
Brick is built by laying bricks or stones according to original working lining and builds three pieces of magnesia carbon bricks that air brick or more position is first built in direction by laying bricks or stones, then builds an air brick left side by laying bricks or stones again
Three pieces of magnesia carbon bricks of right part position, it may be necessary to process brick；It is wide to ensure between air brick and working lining that there are 50mm or so simultaneously
Gap will ensure that smooth vertical and horizontal, mortar is full when magnesia carbon brick is built by laying bricks or stones, brickwork joint is less than 2mm；Magnesia carbon brick and original work in building process
Make to use High-Alumina or clayey chamotte for adhesive between layer lining brick is built, with magnesium carbonaceous chamotte is adhesive between magnesia carbon brick；
Return build magnesia carbon brick be linked together with the brick of building by laying bricks or stones in original working lining, while ensure air brick upper and lower, left and right face with time
There are the gaps of 40-60mm between the working lining of block；
(5) corundum gravity flow pouring material is poured in air brick and the gap returned between building working lining；
(6) building a natural Health preservation by laying bricks or stones could toast after 8 hours, small fire 2 hours, big fire 2 hours when baking.
The replacement of air brick is carried out by the above method, which a hot-metal bottle leakage iron accident does not occur again.
Claims (10)
1. a kind of hot-metal bottle air brick leakproof iron construction, including hot-metal bottle tank skin and the air brick (1) in hot-metal bottle tank skin is set,
Permeability cell (4) is equipped on air brick (1), the hot-metal bottle tank skin is from outside to inside successively by hot-metal bottle shell (8), permanent layer
(2) it is embedded in permanent layer (2) and working lining (3) with working lining (3) composition, air brick (1), permeability cell (4) is outside hot-metal bottle
Shell (8) is pierced by and extends outward and connect with the air supply pipe in outside, it is characterised in that：It is filled out between air brick (1) and permanent layer (2)
Filled with ramming mass filled layer (5), it is equipped with pouring material filled layer (6) between air brick (1) and working lining (3) and magnesium brick is returned and built
Layer (7), it is to use build side of the magnesium brick at working lining (3) position of dismounting according to working lining that the magnesium brick, which returns course (7),
Formula is built by laying bricks or stones, and the magnesium brick laid returns course (7) and holds together with original working lining, the pouring material filled layer
(6) magnesium brick is placed in return between course (7) and air brick (1)；The ramming mass filled layer (5) and pouring material filled layer (6) are
Annular or rectangular-ambulatory-plane, are coated on outside four, the upper and lower, left and right face of air brick, ramming mass filled layer (5) and pouring material filled layer
(6) width is equal.
2. a kind of hot-metal bottle air brick leakproof iron construction according to claim 1, it is characterised in that：The ramming mass filling
The width of layer (5) and pouring material filled layer (6) is 40-60mm.
3. a kind of hot-metal bottle air brick leakproof iron construction according to claim 1, it is characterised in that：The magnesium brick, which returns, to be built
Layer (7) is built by laying bricks or stones along air brick (1) four, upper and lower, left and right face using magnesia carbon brick, and width is more than 550mm.
4. a kind of hot-metal bottle air brick leakproof iron construction according to claim 1, it is characterised in that：The ramming mass filling
Layer (5) is that proportion is used to be not less than 1730 degrees Celsius, Al with refractoriness for 1.25 magnesium chloride brine2O3Content is not less than
The 45% clay tone filled layer that clayey ramming mass filling ramming is formed with made of, the pouring material filled layer (6) are
The filled layer to be formed is poured using corundum based self-flow castable.
5. a kind of leakproof iron hot-metal bottle air brick replacing options, it is characterised in that be as follows：
(1) when replacing hot-metal bottle air brick, first the original working lining by air brick outer rim neighbor distance not less than 600mm is built by laying bricks or stones
Brick is dismantled, and then conventionally takes out old air brick, and by the original working lining removed in range build by laying bricks or stones brick with it is new
Residue, residual ash are removed clean on the brick door of lining-up brick contact；
(2) the clayey mud of 2-3mm is smeared in the hot-metal bottle ladle bowl inner surface for installing new air brick, then air brick is placed in
It is flat with horizon rule water detection above clayey mud, ensure that air brick face and working lining brick face dress paperback are neat, new air brick above and below,
The gap of reserved 40-60mm between left and right face and hot-metal bottle original permanent layer；
(3) the clayey ramming mass that brine reconciles is filled in gap between the periphery of new air brick and hot-metal bottle original permanent layer,
It is layered during filling and consolidates ramming mass, it is closely knit that filling is completed in gap；
(4) it carries out back building by the way of wet block in the work layer region that air brick is removed up and down using magnesia carbon brick, according to
The magnesia carbon brick at air brick position up and down is first built in the direction that original working lining builds brick masonry by laying bricks or stones by laying bricks or stones, then position of building air brick by laying bricks or stones or so
Magnesia carbon brick；Magnesia carbon brick and original working lining lining brick use High-Alumina or clayey chamotte for adhesive between building in building process,
With magnesium carbonaceous chamotte it is adhesive between magnesia carbon brick；It returns the magnesia carbon brick built to be linked together with the brick of building by laying bricks or stones in original working lining, together
When ensure air brick upper and lower, left and right face return build working lining between there are the gaps of 40-60mm；
(5) corundum gravity flow pouring material is poured in air brick and the gap returned between building working lining, then natural Health preservation 6-8 is small
Shi Hou, into the baking stage.
6. a kind of leakproof iron hot-metal bottle air brick replacing options according to claim 5, it is characterised in that the step (1)
It is middle remove working lining build by laying bricks or stones brick the specific steps are：First one piece of working lining of fitted and breathable brick surrounding is built by laying bricks or stones brick with smashing, and
Brickbat is removed, then removes working lining lining brick along air brick surrounding at this neutral gear.
7. a kind of leakproof iron hot-metal bottle air brick replacing options according to claim 5, it is characterised in that the step (3)
In brine reconcile the specific preparation method of clayey ramming mass it is as follows：
(1) use water and magnesium chloride according to mass ratio 1:1.25 ratio is configured to the brine that proportion is 1.25；
(2) refractoriness is selected to be not less than 1730 degrees Celsius, Al2O3Clay ash of the content not less than 45%, places it in ash-pan
In, brine prepared in (1) the step of clay ash weight 16.5-16.8% in addition disk, using manually stirring evenly, until adjusting
The ramming mass holding of sum is agglomerating, and stirring completion, is configured to the clayey ramming mass of brine reconciliation when throwing into powder.
8. a kind of leakproof iron hot-metal bottle air brick replacing options according to claim 5, it is characterised in that：The step
(4) magnesia carbon brick in will ensure that smooth vertical and horizontal, mortar is full when building by laying bricks or stones, and brickwork joint is less than 2mm.
9. a kind of leakproof iron hot-metal bottle air brick replacing options according to claim 5, it is characterised in that：In step (1)
Middle three pieces of original working linings that air brick upper and lower, left and right are adjacent build brick dismounting by laying bricks or stones；Using wet block mode saturating in step (4)
Gas brick three pieces of magnesia carbon bricks of each up and down time block.
10. a kind of leakproof iron hot-metal bottle air brick replacing options according to claim 5, it is characterised in that：In step (5)
The middle baking stage first uses small fire to toast 2 hours, then is toasted 2 hours using big fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004588.1A CN106513651B (en) | 2017-01-04 | 2017-01-04 | Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710004588.1A CN106513651B (en) | 2017-01-04 | 2017-01-04 | Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106513651A CN106513651A (en) | 2017-03-22 |
| CN106513651B true CN106513651B (en) | 2018-08-10 |
Family
ID=58336885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710004588.1A Active CN106513651B (en) | 2017-01-04 | 2017-01-04 | Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106513651B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449272B (en) * | 2017-07-28 | 2018-07-31 | 东营方圆有色金属有限公司 | A kind of building method of swinging metallurgical smelting oven refractory |
| CN114932214A (en) * | 2022-06-13 | 2022-08-23 | 山西太钢不锈钢股份有限公司 | Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle |
-
2017
- 2017-01-04 CN CN201710004588.1A patent/CN106513651B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106513651A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104827019B (en) | Automatic ladle drainage device | |
| CN108971470B (en) | Novel steel ladle and masonry method thereof | |
| CN106111966B (en) | A kind of compound permanent ladle layer construction method | |
| CN102554201A (en) | Large steel ladle and manufacturing method for same | |
| CN101386067B (en) | Ladle liner and laying technique thereof | |
| CN106435073A (en) | Blast furnace liner overall pouring construction method for replacing spraying materials and refractory bricks | |
| CN106513651B (en) | Hot-metal bottle air brick leakproof iron construction and leakproof iron air brick replacing options | |
| CN101700572B (en) | Method for building container bottom of carbon-containing molten steel container | |
| CN103350221B (en) | Method for maintaining and building 320-ton torpedo ladle cone working layer | |
| CN104264700A (en) | Seepage prevention construction method for light-weight precipitation well point post-cast strip of underground construction | |
| CN104529485B (en) | Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application | |
| CN101524751B (en) | Plate blank tundish for preventing cast-on downward flow and preparation method thereof | |
| CN104451008B (en) | A kind of blast furnace gravity flow fire-resistant castable construction method | |
| CN206343617U (en) | A kind of hot-metal bottle air brick leakproof iron construction | |
| CN202804169U (en) | Novel steel ladle permanent layer structure | |
| CN102954693B (en) | Building method of bottom groove circulating pipe of vacuum circulating degassing furnace | |
| CN101851692B (en) | Construction method for curing non-aqueous slurry at normal temperature in blast furnace | |
| CN87101798A (en) | The flashboard of fire-resistant moulded parts, especially sliding gate | |
| CN102909359B (en) | Ladle with seepage-proofing insulation layer and masonry method of ladle | |
| CN109652100B (en) | Method for improving production environment based on 6-meter coke oven top overhaul | |
| CN104019314A (en) | Construction method for lining of high-temperature expansion joint of dry quenching furnace | |
| CN206052075U (en) | A kind of masonry construction of RH dip pipes steel construction and liner tile | |
| CN101392991B (en) | Method for building refining furnace bottom | |
| CN101435660B (en) | Masonry method of stainless steel smelting GOR furnace bottom | |
| CN202963436U (en) | Double-vacuum cast steel ingot middle ladle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |