CN102491764A - Intermediate-frequency induction smelting furnace lining - Google Patents
Intermediate-frequency induction smelting furnace lining Download PDFInfo
- Publication number
- CN102491764A CN102491764A CN2011103894411A CN201110389441A CN102491764A CN 102491764 A CN102491764 A CN 102491764A CN 2011103894411 A CN2011103894411 A CN 2011103894411A CN 201110389441 A CN201110389441 A CN 201110389441A CN 102491764 A CN102491764 A CN 102491764A
- Authority
- CN
- China
- Prior art keywords
- accounts
- furnace
- frequency induction
- account
- furnace lining
- 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.)
- Pending
Links
Images
Abstract
The invention provides an intermediate-frequency induction smelting furnace lining which comprises the following main components in percentage by mass: 20-25% of Al2O3, 50-55% of MgO, 5-10% of ZrO2, 15-20% of Cr2O3 and the balance of impurity. The material is prepared from the following components in the following particle sizes: 25-30% of 3-6mm component, 15-20% of 1-3mm component, 15-20% of 0-1mm component and 35-40% of 200-mesh component. The invention is suitable for an intermediate-frequency induction smelting furnace lining for smelting high manganese steel, stainless steel, alloy steel and carbon steel. The intermediate-frequency induction smelting furnace lining has the advantages of high refractory temperature, favorable alkali resistance, favorable neutral and weakly acidic slag corrosion resistance, long service life and high cost performance.
Description
Technical field
The present invention relates to a kind of fire resisting material field, relate in particular to the medium frequency induction melting furnace furnace lining that uses in a kind of melting high mangaenese steel, stainless steel, steel alloy, the carbon steel.
Background technology
In industrial production, the furnace lining great majority of medium frequency induction melting furnace melting high mangaenese steel, stainless steel, steel alloy, carbon steel are with silica sand, magnesia and corundum material, and its relative merits are roughly following:
Silica sand is a kind of acid refractory, its good thermal shock, but refractoriness is lower, pyrotic smeltings such as the high mangaenese steel of unable to bearing, stainless steel, steel alloy, carbon steel, and SiO
2Produce manganous silicate with generation chemical reaction such as alkaline manganese element, so silica sand institute brickwork lining can seriously be corroded, melting loss, furnace life generally can not surpass 20 heats;
Magnesia is a kind of basic refractory; Its refractoriness is higher, but heat-shock resistance is poor, in the process of smelting high mangaenese steel, stainless steel, steel alloy, carbon steel; The medium frequency induction melting furnace melting of most producers is to be interrupted production; Cause magnesia to build the frequent experience rapid heat cycle of intermediate frequency furnace lining and change, can produce a large amount of crackles, thereby cause wearing stove;
Corundum is a kind of amphoteric refractory; Its refractoriness is high; Good thermal shock, but cost an arm and a leg, smelt producer in use as if the damage that causes the intermediate frequency furnace lining owing to external causes such as smelting equipment, brickwork, bakers; Then can cause the very big loss of smelting producer, so influenced promoting the use of of corundum matter brickwork material.
In the making processes of medium frequency induction melting furnace furnace lining; The nook, boundary that crucible bottom is being born at the bottom of static pressure, the especially crucible of whole molten steel with sidewall of crucible is the weakest link of whole crucible, because crucible sand material variation in thickness is big here; Radiating condition is different; Be difficult for even ramming during knotting, on the corner be easy to generate sintering crack and cause bleed-out, therefore require to have higher knotting quality.Sidewall of crucible is the groundwork position of crucible, is positioned between furnace bottom and fire door, and it is bearing the chemical erosion effect etc. of molten steel static pressure, scouring force, internal-external temperature difference stress and molten steel, so sidewall of crucible requires to tie a knot evenly, densification, does not have horizontal hierarchical crack.
Summary of the invention
For solving the problems of the technologies described above; The present invention provides a kind of medium frequency induction melting furnace furnace lining that is applicable to melting high mangaenese steel, stainless steel, steel alloy, carbon steel; Medium frequency induction melting furnace furnace lining refractory temperature of the present invention is high; And the erosion performance of alkali-resistivity, neutrality and slightly acidic slag is good, and its long service life, cost performance are high.
The technical scheme that the present invention solves the problems of the technologies described above is: a kind of medium frequency induction melting furnace furnace lining, it adopts the staple mass percent of material to be: Al
2O
3Account for 20-25%, MgO accounts for 50-55%, ZrO
2Account for 5-10%, Cr
2O
3Account for 15-20%, all the other are impurity.
Further, above-mentioned medium frequency induction melting furnace furnace lining adopts the grain size proportion of material to be: 3-6mm accounts for 25-30%, and 1-3mm accounts for 15-20%, and 0-1mm accounts for 15-20%, and 200 orders account for 35-40%.
Further, the preferred version of above-mentioned medium frequency induction melting furnace furnace lining is: adopting the staple mass percent of material is Al
2O
3Account for 20%, MgO accounts for 55%, ZrO
2Account for 8%, Cr
2O
3Account for 15%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 15%, and 0-1mm accounts for 15%, 200 order and accounts for 40%.
Another preferred version is: adopting the staple mass percent of material is Al
2O
3Account for 23%, MgO accounts for 50%, ZrO
2Account for 5%, Cr
2O
3Account for 20%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 20%, and 0-1mm accounts for 15%, 200 order and accounts for 35%.
Another preferred version is: adopting the staple mass percent of material is Al
2O
3Account for 20%, MgO accounts for 52%, ZrO
2Account for 10%, Cr
2O
3Account for 16%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 25%, and 1-3mm accounts for 18%, and 0-1mm accounts for 20%, 200 order and accounts for 37%.
The beneficial effect of medium frequency induction melting furnace furnace lining of the present invention is:
1. the refractoriness of medium frequency induction melting furnace furnace lining is high, reaches 2150 ℃;
2. good thermal shock stability has reduced more than 90% than the crackle of magnesia institute brickwork lining;
3. anti-erosion, the erosion of alkali-resistivity, neutrality and slightly acidic slag is well;
4. the construction method of medium frequency induction melting furnace furnace lining is easy, has practiced thrift hand labor power in a large number;
5. low-carbon energy-saving can significantly improve work-ing life of intermediate frequency furnace lining, save energy;
The moderate cost of the furnace building material that 6. uses has very high superiority of effectiveness.
Description of drawings
Fig. 1 is the structural representation of medium frequency induction melting furnace crucible bottom knotting.
The structural representation that Fig. 2 finishes for the knotting of medium frequency induction melting furnace furnace lining.
Among the figure, 1 is pit, and 2 is hard layer of sand, and 3 is the copper induction coil, and 4 is dustless woven asbesto, and 5 is furnace bottom, and 6 is sidewall of crucible, and 7 are stove neck and fire door.
Embodiment
Embodiment 1 (melting ZGMn13 High Manganese Cast Steel):
A kind of medium frequency induction melting furnace furnace lining, it adopts the staple mass percent of material to be: Al
2O
3Account for 20%, MgO accounts for 55%, ZrO
2Account for 8%, Cr
2O
3Account for 15%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 15%, and 0-1mm accounts for 15%, 200 order and accounts for 40%; On request with material dried puddle close full and uniform.
Like Fig. 1, shown in Figure 2,, medium frequency induction melting furnace crucible knotting and knotting comprise following structure after finishing: pit 1, hard layer of sand 2, copper induction coil 3, dustless woven asbesto 4, furnace bottom 5, sidewall of crucible 6, stove neck and fire door 7.
The construction method of use of above-mentioned medium frequency induction melting furnace furnace lining is according to the following steps:
1. smear the coil clay at the copper induction coil 3 of medium frequency induction melting furnace, evenly lay the dustless woven asbesto 4 of one deck after parching again.
2. get medium frequency induction melting furnace gainster 1000KG, in gainster, add the clean tap water of 10KG, fully mix evenly hides with plastic cloth the back, and room temperature was placed 15 minutes.
3. the knotting of furnace bottom: in the medium frequency induction melting furnace production process; Furnace bottom 5 is bearing all static pressures of molten steel; Especially the nook, boundary of furnace bottom 5 and sidewall of crucible 6 is weakest links of whole crucible, because crucible sand material variation in thickness is big here, radiating condition is different; Be difficult for even ramming during knotting, on the corner be easy to generate transverse crack and cause bleed-out.Construction can divide 4 adding gainsters to carry out daubing on request; Each knotting time is 20 minutes; As shown in Figure 1; Then take out the loose sand material in top layer when hard layer of sand 2 reaches 3 last times of bottom the 3rd circle copper induction coil, in hard layer of sand 2, dig out the pit 1 that matches with die core bottom, put into die core and centering adjustment and fix; The bottom position of pit 1 is in the position of the second circle copper induction coil 3 from the bottom.Like this, can guarantee that the crucible bottom temperature can be not on the low side, prevent that the steel phenomenon from appearring coagulating in furnace bottom 5.
4. the knotting of sidewall of crucible: as shown in Figure 2; Sidewall of crucible 6 is groundwork positions of crucible; Between furnace bottom 5 and fire door; It is bearing the chemical erosion effect etc. of molten steel static pressure, scouring force, internal-external temperature difference stress and molten steel, so sidewall of crucible must be tied a knot evenly, fine and close, no layering, through obtaining good working surfaces behind the sintering.The construction of medium frequency induction melting furnace gainster; Can reinforcedly at every turn on request be controlled at thickness is 10 centimetres; Each knotting time is 20 minutes; Before each reinforced, should knotting hard closely layer of sand in everywhere fully be drawn pine, draw a bulk and be about 2 centimetres, so as not to layer with layer between be connected layering and produce transverse crack and cause wearing steel.In whole knotting process, must keep the core center position, in order to avoid the crooked sidewall of crucible became uneven that makes of core reduces work-ing life.When hard layer of sand 2 reaches the slag lining of medium frequency induction melting furnace, just during the position of the top first circle copper induction coil 3, change stove neck and fire door 7 knottings over to.
5. stove neck and fire door knotting: water glass and gainster thorough mixing with modulus M2.8 are even; Compound should not be too dried or too wet; Pinch agglomerating getting final product with hand, at stove neck and fire door 7 places brushing one deck water glass, fill out compound then; Solid with the hammer ramming, low outer height was 45 ° of shapes approximately in fire door should build up.
6. the baking of furnace lining and sintering: should follow that low temperature slowly toasts, the full stove agglomerating principle of high temperature, earlier with the heat-up rate of≤100 ℃/h, reach 1000 ℃ and be incubated 2h after; Continue heat-up rate by≤100 ℃/h; Make clean metal charge fusing amount reach 90%, the heat-up rate with≤200 ℃/h reaches normal tapping temperature again, after molten steel is melted to full stove; Forfeit electricity insulation tapping again in 1 hour between employing, furnace lining is that sintering finishes.
Above-mentioned medium frequency induction melting furnace gainster, following through assay:
1. tied a knot behind the medium frequency induction melting furnace furnace lining, extracted the swage core, found that furnace bottom and furnace wall are smooth, clean and tidy, fine and close, do not had horizontal layering boundary line, do not had the sand that collapses.
2. when melting is to 3 heats: observe the intermediate frequency furnace wall, very smooth, sintered layer is complete, fine and close, zero defect.
3. when melting was to 40 heats: observe the intermediate frequency furnace wall, smooth, flawless, nothing corroded.
4. when melting is to 100 heats: observe the intermediate frequency furnace wall, more smooth, flawless, there is a little dry slag on the surface, furnace wall.
5. when melting is to 150 heats: observe the intermediate frequency furnace wall, more smooth, flawless, lower furnace portion slightly increases, and melting loss, erosion are arranged.
6. when melting was to 162 heats: rubescent phenomenon, blowing out appearred in the position of bottom the 4th circle copper induction coil of intermediate frequency furnace wall.
Test this time, be 162 heats the work-ing life of medium frequency induction melting furnace furnace lining.
Embodiment 2 (melting 304 stainless steels):
A kind of medium frequency induction melting furnace furnace lining, it adopts the staple mass percent of material to be: Al
2O
3Account for 23%, MgO accounts for 50%, ZrO
2Account for 5%, Cr
2O
3Account for 20%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 20%, and 0-1mm accounts for 15%, 200 order and accounts for 35%; On request with material dried puddle close full and uniform.
The construction method of use of above-mentioned medium frequency induction melting furnace furnace lining is identical with embodiment 1.
Above-mentioned medium frequency induction melting furnace furnace lining, following through assay:
1. tied a knot behind the medium frequency induction melting furnace furnace lining, extracted the swage core, found that furnace bottom and furnace wall are smooth, clean and tidy, fine and close, do not had horizontal layering boundary line, do not had the sand that collapses.
2. when melting is to 3 heats: observe the intermediate frequency furnace wall, very smooth, sintered layer is complete, fine and close, zero defect.
3. when melting was to 40 heats: observe the intermediate frequency furnace wall, smooth, flawless, nothing corroded.
4. when melting is to 100 heats: observe the intermediate frequency furnace wall, more smooth, flawless, there is a little erosion on the surface, furnace wall.
5. when melting was to 150 heats: observe the intermediate frequency furnace wall, more smooth, flawless had melting loss, erosion.
6. when melting was to 169 heats: rubescent phenomenon, blowing out appearred in the position of bottom the 3rd circle copper induction coil of intermediate frequency furnace wall.
Test this time, be 169 heats the work-ing life of medium frequency induction melting furnace furnace lining.
Embodiment 3 (melting 45# carbon steel):
A kind of medium frequency induction melting furnace furnace lining, it adopts the staple mass percent of material to be: Al
2O
3Account for 20%, MgO accounts for 52%, ZrO
2Account for 10%, Cr
2O
3Account for 16%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 25%, and 1-3mm accounts for 18%, and 0-1mm accounts for 20%, 200 order and accounts for 37%; On request with material dried puddle close full and uniform.
The construction method of use of above-mentioned medium frequency induction melting furnace furnace lining is identical with embodiment 1.
Above-mentioned medium frequency induction melting furnace furnace lining, following through assay:
1. tied a knot behind the medium frequency induction melting furnace furnace lining, extracted the swage core, found that furnace bottom and furnace wall are smooth, clean and tidy, fine and close, do not had horizontal layering boundary line, do not had the sand that collapses.
2. when melting is to 3 heats: observe the intermediate frequency furnace wall, very smooth, sintered layer is complete, fine and close, zero defect.
3. when melting was to 40 heats: observe the intermediate frequency furnace wall, smooth, flawless, nothing corroded.
4. when melting is to 100 heats: observe the intermediate frequency furnace wall, more smooth, flawless, there is a little erosion on the surface, furnace wall.
5. when melting is to 150 heats: observe the intermediate frequency furnace wall, more smooth, flawless, lower furnace portion slightly increases, and melting loss, erosion are arranged.
6. when melting was to 166 heats: rubescent phenomenon, blowing out appearred in the position of the top second circle copper induction coil of intermediate frequency furnace wall.
Test this time, be 166 heats the work-ing life of medium frequency induction melting furnace furnace lining.
Embodiment 4 (melting ZGCr13 cast steel with high chromium):
A kind of medium frequency induction melting furnace furnace lining, it adopts the staple mass percent of material to be: Al
2O
3Account for 25%, MgO accounts for 50%, ZrO
2Account for 8%, Cr
2O
3Account for 15%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 27%, and 1-3mm accounts for 18%, and 0-1mm accounts for 18%, 200 order and accounts for 37%; On request with material dried puddle close full and uniform.
The construction method of use of above-mentioned medium frequency induction melting furnace furnace lining is identical with embodiment 1.
Above-mentioned medium frequency induction melting furnace furnace lining, following through assay:
1. tied a knot behind the medium frequency induction melting furnace furnace lining, extracted the swage core, found that furnace bottom and furnace wall are smooth, clean and tidy, fine and close, do not had horizontal layering boundary line, do not had the sand that collapses.
2. when melting is to 3 heats: observe the intermediate frequency furnace wall, very smooth, sintered layer is complete, fine and close, zero defect.
3. when melting was to 40 heats: observe the intermediate frequency furnace wall, smooth, flawless, nothing corroded.
4. when melting is to 100 heats: observe the intermediate frequency furnace wall, more smooth, flawless, there is a little erosion on the surface, furnace wall.
5. when melting is to 150 heats: observe the intermediate frequency furnace wall, more smooth, flawless, the middle part, furnace wall increases slightly, and melting loss, erosion are arranged.
6. when melting was to 168 heats: rubescent phenomenon, blowing out appearred in the position of bottom the 7th circle copper induction coil of intermediate frequency furnace wall;
Test this time, be 168 heats the work-ing life of medium frequency induction melting furnace furnace lining.
Claims (5)
1. a medium frequency induction melting furnace furnace lining is characterized in that, it adopts the staple mass percent of material to be: Al
2O
3Account for 20-25%, MgO accounts for 50-55%, ZrO
2Account for 5-10%, Cr
2O
3Account for 15-20%, all the other are impurity.
2. medium frequency induction melting furnace furnace lining according to claim 1 is characterized in that its grain size proportion is: 3-6mm accounts for 25-30%, and 1-3mm accounts for 15-20%, and 0-1mm accounts for 15-20%, and 200 orders account for 35-40%.
3. medium frequency induction melting furnace furnace lining according to claim 2 is characterized in that, adopting the staple mass percent of material is Al
2O
3Account for 20%, MgO accounts for 55%, ZrO
2Account for 8%, Cr
2O
3Account for 15%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 15%, and 0-1mm accounts for 15%, 200 order and accounts for 40%.
4. medium frequency induction melting furnace furnace lining according to claim 2 is characterized in that, adopting the staple mass percent of material is Al
2O
3Account for 23%, MgO accounts for 50%, ZrO
2Account for 5%, Cr
2O
3Account for 20%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 30%, and 1-3mm accounts for 20%, and 0-1mm accounts for 15%, 200 order and accounts for 35%.
5. medium frequency induction melting furnace furnace lining according to claim 2 is characterized in that, adopting the staple mass percent of material is Al
2O
3Account for 20%, MgO accounts for 52%, ZrO
2Account for 10%, Cr
2O
3Account for 16%, all the other are impurity; Adopt the material particle size proportioning to be: 3-6mm accounts for 25%, and 1-3mm accounts for 18%, and 0-1mm accounts for 20%, 200 order and accounts for 37%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103894411A CN102491764A (en) | 2011-11-30 | 2011-11-30 | Intermediate-frequency induction smelting furnace lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103894411A CN102491764A (en) | 2011-11-30 | 2011-11-30 | Intermediate-frequency induction smelting furnace lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102491764A true CN102491764A (en) | 2012-06-13 |
Family
ID=46183634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103894411A Pending CN102491764A (en) | 2011-11-30 | 2011-11-30 | Intermediate-frequency induction smelting furnace lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102491764A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747373A (en) * | 2016-12-09 | 2017-05-31 | 永平县泰达废渣开发利用有限公司 | A kind of sensing inner lining of furnace for white residue melting |
| CN112964062A (en) * | 2021-04-02 | 2021-06-15 | 江苏省沙钢钢铁研究院有限公司 | Preparation method of crucible for vacuum induction melting furnace |
| CN113074550A (en) * | 2021-05-06 | 2021-07-06 | 先导薄膜材料（广东）有限公司 | Furnace striking method for vacuum induction smelting furnace crucible |
| CN114383390A (en) * | 2021-12-30 | 2022-04-22 | 潍坊信合节能科技有限公司 | Medium-frequency induction diathermy furnace and medium-frequency induction diathermy furnace lining drying process |
| CN115900352A (en) * | 2022-12-12 | 2023-04-04 | 常州创明磁性材料科技有限公司 | Furnace building mold and furnace building method for medium-frequency induction furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182868A (en) * | 1996-11-18 | 1998-05-27 | 张海泉 | Liner of induction furnace and making method thereof |
| CN1413951A (en) * | 2002-07-03 | 2003-04-30 | 上虞斯必康耐火材料有限公司 | Manufacture method of functional refractory for steelmaking |
| CN1467174A (en) * | 2002-07-11 | 2004-01-14 | 李建国 | Material for producing furnace |
-
2011
- 2011-11-30 CN CN2011103894411A patent/CN102491764A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182868A (en) * | 1996-11-18 | 1998-05-27 | 张海泉 | Liner of induction furnace and making method thereof |
| CN1413951A (en) * | 2002-07-03 | 2003-04-30 | 上虞斯必康耐火材料有限公司 | Manufacture method of functional refractory for steelmaking |
| CN1467174A (en) * | 2002-07-11 | 2004-01-14 | 李建国 | Material for producing furnace |
Non-Patent Citations (1)
| Title |
|---|
| 林先桥等: "锆英石对MgO-Al2O3质浇注料性能的影响", 《材料与冶金学报》, vol. 4, no. 1, 31 March 2005 (2005-03-31), pages 197 - 200 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747373A (en) * | 2016-12-09 | 2017-05-31 | 永平县泰达废渣开发利用有限公司 | A kind of sensing inner lining of furnace for white residue melting |
| CN112964062A (en) * | 2021-04-02 | 2021-06-15 | 江苏省沙钢钢铁研究院有限公司 | Preparation method of crucible for vacuum induction melting furnace |
| CN112964062B (en) * | 2021-04-02 | 2022-10-21 | 江苏省沙钢钢铁研究院有限公司 | Preparation method of crucible for vacuum induction melting furnace |
| CN113074550A (en) * | 2021-05-06 | 2021-07-06 | 先导薄膜材料（广东）有限公司 | Furnace striking method for vacuum induction smelting furnace crucible |
| CN113074550B (en) * | 2021-05-06 | 2022-09-06 | 先导薄膜材料（广东）有限公司 | Furnace striking method for vacuum induction smelting furnace crucible |
| CN114383390A (en) * | 2021-12-30 | 2022-04-22 | 潍坊信合节能科技有限公司 | Medium-frequency induction diathermy furnace and medium-frequency induction diathermy furnace lining drying process |
| CN115900352A (en) * | 2022-12-12 | 2023-04-04 | 常州创明磁性材料科技有限公司 | Furnace building mold and furnace building method for medium-frequency induction furnace |
| CN115900352B (en) * | 2022-12-12 | 2023-12-01 | 常州创明磁性材料科技有限公司 | Medium frequency induction furnace building mold and furnace building method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103357470B (en) | Wear-resistant hammer head of a kind of hammer mill and preparation method thereof | |
| CN106435073B (en) | A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick | |
| CN102491764A (en) | Intermediate-frequency induction smelting furnace lining | |
| CN102225867B (en) | Silicon carbide furnace door brick for ore-smelting electric furnace and preparation method thereof | |
| CN101957139A (en) | Furnace lining repairing technology | |
| CN103509566A (en) | Overhaul construction method of double chute position of dry quenching furnace | |
| CN205996184U (en) | A kind of energy-saving ladle of low-material-consumption | |
| CN101748246A (en) | Method for improving service life of insert tube of vacuum degassing furnace | |
| CN104858409A (en) | Steel ladle for steelmaking | |
| CN107739195A (en) | A kind of Ausmelt copper smelters regeneration alumina chrome brick and preparation method thereof | |
| CN105777158A (en) | Siliceous dry material for tundish for steel smelting as well as production method and construction method | |
| CN205629355U (en) | Ladle lining | |
| CN102659432A (en) | Novel RH gunning refractory | |
| CN106555029A (en) | VOD stove vacuum cover fast repairing methods | |
| CN105036775A (en) | Torpedo ladle slag line zone repair material | |
| CN204584250U (en) | A kind of ladle for making steel | |
| CN103157785A (en) | Construction method of ladle lining | |
| CN104310465B (en) | A kind of corrosion-and high-temp-resistant body of heater for boiling chloridizing furnace and preparation method thereof | |
| CN103922761A (en) | Low-zirconium mullite draft tube brick and preparation method thereof | |
| CN103332964A (en) | Viscous slag prevention coating for refractory material in casting blank heating furnace | |
| CN106588034A (en) | Repair material for thermal gunning of RH immersion tube and use method of repair material | |
| CN101985402B (en) | Anti-oxidation paint for inner wall of ladle | |
| CN104972104A (en) | Manufacturing method and combination mode of tundish working lining | |
| CN201537694U (en) | Hot metal ladle | |
| CN204265460U (en) | A kind of corrosion-and high-temp-resistant body of heater for boiling chloridizing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120613 |