CN102744397A - Sequence casting corundum-mullite composite collector nozzle - Google Patents
Sequence casting corundum-mullite composite collector nozzle Download PDFInfo
- Publication number
- CN102744397A CN102744397A CN2012102599352A CN201210259935A CN102744397A CN 102744397 A CN102744397 A CN 102744397A CN 2012102599352 A CN2012102599352 A CN 2012102599352A CN 201210259935 A CN201210259935 A CN 201210259935A CN 102744397 A CN102744397 A CN 102744397A
- Authority
- CN
- China
- Prior art keywords
- river
- mouth
- corundum
- mullite
- bond
- 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.)
- Granted
Links
Abstract
The invention provides a sequence casting corundum-mullite composite collector nozzle, which is used to solve the problems of rapid turnover of steel ladles, continuous usage of sliding plates and sequence casting, and is characterized in that tabular corundum, top-grade high-alumina clinker (mullite), clay and the like taken as the key raw materials and lignosulfonate taken as a binding agent are subjected to batching, mixing, high-pressure molding, sintering under an intermediate temperature between 1,300-1,420 DEG C, oil immersed carbonization and reinforcement at the periphery of the nozzle by an irony jacket. The collector nozzle provided by the invention has the advantages of good evenness, corrosion resistance, abrasion resistance, no bonding with steel and slags, high mechanical wear strength and good thermal shock stability, and is suitable for alloying and smelting clean steel.
Description
Technical field:
The present invention is specifically related to the compound down mouth of a river of a kind of sequence casting corundum-mullite, belong to that continuous casting functional property refractory material sliding sprue tile for smelting makes technical field.Being adapted to smelt ladle uses.
Background technology:
Know with regard to the inventor, and the demonstration of relevant document, mostly the lower nozzle brick material of producing at present is high alumina matter, can only use 1 stove, minority can be used the 2-3 stove for corundum matter, but price is higher, steel-passing amount is little, the anti-material expense of ton steel is high, the cost height.For can satisfying the development need that the steel mill continuous casting is produced, and can reduce ton anti-material expense of steel.It is used to solve market that urgent need is developed the compound mouth of a river down of sequence casting corundum, the mullite of relative low price, improves Products Quality, and the scope of application will constantly enlarge, and has good prospects.
Summary of the invention:
The object of the invention overcomes above deficiency, provides a kind of and can satisfy the development need that steel mill's continuous casting is produced, and can reduce the anti-material expense of ton steel.The compound mouth of a river down of the sequence casting corundum-mullite that Costco Wholesale is cheap relatively.
Technical scheme of the present invention is achieved in that the compound mouth of a river down of described sequence casting corundum-mullite, it is characterized in that it being that plate diamond spar, one-level high alumina (mullite phase), clay etc. are important source material; With lignosulfonates is bond; Through batching, mixing, high-pressure molding burns till 1300～1420 ℃ middle temperature; Through the oil immersion carbonization treatment,, periphery, the mouth of a river processes after reinforcing with the iron overcoat at last again.
Main component formulation weight part is: plate diamond spar 40-45%, high alumina (mullite phase) 40-45%, clay 10%, paper pulp 6-12%.
Manufacture craft:
Adopt working face to use corundum in granules and corundum matrix material; And add a small amount of clay as the bond acceleration of sintering; Non-working surface adopts one-level high alumina particulate material (mullite phase) and matrix material also to add a small amount of clay acceleration of sintering, with lignosulfonates as bond.
1, corundum by must grain composition carrying out batching, adds in edge runner-wet mill or the high speed muller and mixed 3～5 minutes behind crushing and screening, adds the lignosulfonates bond, and mixing discharging in 10～30 minutes becomes down to encircle in the mouth of a river and expect.One-level high alumina (mullite phase) by must grain composition carrying out batching, adds in edge runner-wet mill or the high speed muller and mixed 3～5 minutes behind crushing and screening, adds the lignosulfonates bond, and mixing discharging in 10～30 minutes becomes mouth of a river outer shroud material down.
2, high tonnage brick machine is quoted in moulding, according to shape, the ratio of brick, and accurate weighing material; The compound mouth of a river down is the component of two kinds of materials of weighing respectively, and load weighted material joins in the composite die, is molded into the regulation ratio; Every brick will be surveyed and drawn shape ratio, flatness, diagonal ratio; Per tour will be taken out and examined 10% substance, and each car brick will detect apparent porosity, bulk density, allly realizes that defective phenomenon must scrap and search cause.
3, formed green brick is being gone into drier after air dry, and adobe is carried out drying by certain heating curve in drier, and dried adobe could loading of kiln through the qualified semi-products in inspection back.Burn till and quote tunnel cave and burn till facility, burn till temperature at 1300～1420 ℃.
4, the mouth of a river is with vertical vacuum jar immersion oil down to burn till the back, and the oil immersion jar is put at the following mouth of a river after preheating, be evacuated to after the sealing below the vacuum 133Pa; Charge into the mid temperature pitch that is preheating to 200 ℃ of front and back, in order to let pitch be inserted into down more in the pore at the mouth of a river, to carrying out pressurization in the jar; Pressure reaches 1.0～1.4MPa; But pitch is extracted in both releases after must the dipping in time out, draws out down the mouth of a river.Handle through sand removal, reinforce with the iron overcoat at last.
Strict on material choice, AL
2O
3Be higher than the above high grade bauxite of 80-85%.
Forcing press with surpassing more than 400 tons is pressed, and the bulk density and the appearance and size at the following mouth of a river are carried out strictness control, just can go into klining after semi-finished product are qualified.Higher firing temperature and enough temperature retention times are absolutely necessary in sintering process, are that the tunnel cave maximum temperature firing temperature of fuel can reach 1600 ℃ with the natural gas.
The compound mouth of a river down of sequence casting corundum-mullite of the present invention mainly is used for controlling the molten steel flow and annotates speed.Require to have good abrasion resistance under the high temperature, high temperature lower volume good stability, and certain self-fluxing nature is arranged.The following mouth of a river in use, the molten steel in the ladle descends along with the molten steel amount reduces because of static pressure, but requires the speed of cast to keep watering preliminary phase seemingly with opening, this just requires material to have the corresponding loss rate of dissolving, to guarantee the molten steel stable flow rate.For improving the thermal shock resistance at the mouth of a river down, will descend the mouth of a river to be installed in the iron cover, prevent cracking.Should avoid burning oxygen opens and waters as far as possible.
The compound mouth of a river down of sequence casting corundum-mullite of the present invention has the logotype of many stoves, makes mouth of a river installation time shortening down in the ladle circular flow, and the ladle turnaround speed is accelerated greatly, and online turnover ladle quantity is reduced more than 30%, promotes the organization of production direct motion.The many stoves logotype of the following mouth of a river makes ladle liner be in the condition of high temperature all the time, thereby reduces overtime ladle quantity and then reduce off-line baking ladle quantity, practices thrift coal gas in a large number.The many stoves logotype of the following mouth of a river makes the operative employee shorten 40-50% in the following time of high-temperature operation, can alleviate greatly working strength of workers advantage.
The specific embodiment:
Adopt working face to use corundum in granules and corundum matrix material; And add a small amount of clay as the bond acceleration of sintering; Non-working surface adopts one-level high alumina particulate material (mullite phase) and matrix material also to add a small amount of clay acceleration of sintering, with lignosulfonates as bond.
1, corundum by must grain composition carrying out batching, adds in edge runner-wet mill or the high speed muller and mixed 3～5 minutes behind crushing and screening, adds the lignosulfonates bond, and mixing discharging in 10～30 minutes becomes down to encircle in the mouth of a river and expect.One-level high alumina (mullite phase) by must grain composition carrying out batching, adds in edge runner-wet mill or the high speed muller and mixed 3～5 minutes behind crushing and screening, adds the lignosulfonates bond, and mixing discharging in 10～30 minutes becomes mouth of a river outer shroud material down.
2, high tonnage brick machine is quoted in moulding, according to shape, the ratio of brick, and accurate weighing material; The compound mouth of a river down is the component of two kinds of materials of weighing respectively, and load weighted material joins in the composite die, is molded into the regulation ratio; Every brick will be surveyed and drawn shape ratio, flatness, diagonal ratio; Per tour will be taken out and examined 10% substance, and each car brick will detect apparent porosity, bulk density, allly realizes that defective phenomenon must scrap and search cause.
3, formed green brick is being gone into drier after air dry, and adobe is carried out drying by certain heating curve in drier, and dried adobe could loading of kiln through the qualified semi-products in inspection back.Burn till and quote shuttle kiln, down-draft kiln burns till facility, burns till temperature at 1300～1420 ℃.
4, the mouth of a river is with vertical vacuum jar immersion oil down to burn till the back, and the oil immersion jar is put at the following mouth of a river after preheating, be evacuated to after the sealing below the vacuum 133Pa; Charge into the mid temperature pitch that is preheating to 200 ℃ of front and back, in order to let pitch be inserted into down more in the pore at the mouth of a river, to carrying out pressurization in the jar; Pressure reaches 1.0～1.4MPa; But through must the time purpose dipping after both releases, extract pitch out, draw out down the mouth of a river.Handle through sand removal, reinforce with the iron overcoat at last.
Claims (4)
1. the compound down mouth of a river of sequence casting corundum-mullite; It is characterized in that being important source material by plate diamond spar, one-level high alumina (mullite phase), clay etc., is bond with lignosulfonates, through batching, mixing; High-pressure molding; Middle temperature at 1300～1420 ℃ is burnt till, and again through the oil immersion carbonization treatment, after periphery, the mouth of a river reinforces with the iron overcoat, processes at last.
2. the compound mouth of a river down of sequence casting corundum-mullite as claimed in claim 1 is characterized in that main component formulation weight part is: plate diamond spar
40-45%, high alumina (mullite phase) 40-45%, clay 10%, paper pulp 6-12%.
3. like claim 1, the compound mouth of a river down of 2 described sequence casting corundum-mullites; It is characterized in that manufacture craft adopts working face to use corundum in granules and corundum matrix material; And add a small amount of clay as the bond acceleration of sintering, non-working surface adopts one-level high alumina particulate material (mullite phase) and matrix material also to add a small amount of clay acceleration of sintering, with lignosulfonates as bond; 1), corundum behind crushing and screening by must grain composition carrying out batching; Add in edge runner-wet mill or the high speed muller and mixed 3～5 minutes, add the lignosulfonates bond, mixing discharging in 10～30 minutes becomes down to encircle in the mouth of a river and expects.One-level high alumina (mullite phase) by must grain composition carrying out batching, adds in edge runner-wet mill or the high speed muller and mixed 3～5 minutes behind crushing and screening, adds the lignosulfonates bond; Mix discharging in 10～30 minutes and become down mouth of a river outer shroud material, 2), moulding quotes high tonnage brick machine, according to shape, the ratio of brick; Accurate weighing material, the compound mouth of a river down is the component of two kinds of materials of weighing respectively, and load weighted material joins in the composite die; Be molded into the regulation ratio; Every brick will be surveyed and drawn shape ratio, flatness, diagonal ratio, and per tour will be taken out and examined 10% substance, and each car brick will detect apparent porosity, bulk density; Allly realize that defective phenomenon must scrap and search cause; 3), formed green brick going into drier after air dry, adobe is carried out drying by certain heating curve in drier, dried adobe could loading of kiln through the qualified semi-products in inspection back.Burn till and quote tunnel cave and burn till facility, burn till temperature at 1300～1420 ℃, 4), burn till the back down the mouth of a river with vertical vacuum jar immersion oil; The oil immersion jar is put at the following mouth of a river after preheating, be evacuated to after the sealing below the vacuum 133Pa, charges into the mid temperature pitch that is preheating to 200 ℃ of front and back; In order to let pitch be inserted into down more in the pore at the mouth of a river, to carrying out pressurization in the jar, pressure reaches 1.0～1.4MPa; But pitch is extracted in both releases after must the dipping in time out, draws out down the mouth of a river.Handle through sand removal, reinforce with the iron overcoat at last.
4. like claim 1,2, the compound mouth of a river down of 3 described sequence casting corundum-mullites, it is characterized in that selecting AL
2O
3Be higher than the above high grade bauxite of 80-85%.Carry out the moulding compacting with the forcing press more than 400 tons, to the strict control of mouth of a river bulk density down, just can go into klining after semi-finished product are qualified, firing temperature is that example can reach 1600 ℃ with the tunnel cave gas fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259935.2A CN102744397B (en) | 2012-07-26 | 2012-07-26 | Sequence casting corundum-mullite composite collector nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259935.2A CN102744397B (en) | 2012-07-26 | 2012-07-26 | Sequence casting corundum-mullite composite collector nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102744397A true CN102744397A (en) | 2012-10-24 |
| CN102744397B CN102744397B (en) | 2015-05-20 |
Family
ID=47025089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210259935.2A Active CN102744397B (en) | 2012-07-26 | 2012-07-26 | Sequence casting corundum-mullite composite collector nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102744397B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588049A (en) * | 2016-12-15 | 2017-04-26 | 王世泰 | Silicon-free and carbon-free corundum water port stopper rod product for continuous casting and preparation process thereof |
| CN107586121A (en) * | 2017-08-31 | 2018-01-16 | 云南濮耐昆钢高温材料有限公司 | A kind of compound collector nozzle of ladle and preparation method thereof |
| CN109369199A (en) * | 2018-12-05 | 2019-02-22 | 攀枝花钢城集团有限公司 | Utilize the method for waste magnesia carbon brick preparation continuous casting tundish dry vibration material |
| CN109834252A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of improving ladle upper nozzle service life |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986002633A1 (en) * | 1984-10-23 | 1986-05-09 | Nippon Crucible Co., Ltd. | Refractory containing aluminum nitride oxide, refractory for sliding nozzle, and nozzle for continuously casting steel |
| CN1068093A (en) * | 1992-07-04 | 1993-01-20 | 阳泉市东风耐火材料厂 | Mullite sprue brick manufacture method, mullite sprue brick and uses thereof |
| CN101712559A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Water gap lining layer material for continuous casting |
| CN102503450A (en) * | 2011-09-28 | 2012-06-20 | 苏州宝蠡耐火材料有限公司 | Runner brick and processing method thereof |
-
2012
- 2012-07-26 CN CN201210259935.2A patent/CN102744397B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986002633A1 (en) * | 1984-10-23 | 1986-05-09 | Nippon Crucible Co., Ltd. | Refractory containing aluminum nitride oxide, refractory for sliding nozzle, and nozzle for continuously casting steel |
| CN1068093A (en) * | 1992-07-04 | 1993-01-20 | 阳泉市东风耐火材料厂 | Mullite sprue brick manufacture method, mullite sprue brick and uses thereof |
| CN101712559A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Water gap lining layer material for continuous casting |
| CN102503450A (en) * | 2011-09-28 | 2012-06-20 | 苏州宝蠡耐火材料有限公司 | Runner brick and processing method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588049A (en) * | 2016-12-15 | 2017-04-26 | 王世泰 | Silicon-free and carbon-free corundum water port stopper rod product for continuous casting and preparation process thereof |
| CN106588049B (en) * | 2016-12-15 | 2020-06-09 | 王世泰 | Silicon-free carbon-free corundum nozzle stopper rod product for continuous casting and preparation process thereof |
| CN107586121A (en) * | 2017-08-31 | 2018-01-16 | 云南濮耐昆钢高温材料有限公司 | A kind of compound collector nozzle of ladle and preparation method thereof |
| CN109369199A (en) * | 2018-12-05 | 2019-02-22 | 攀枝花钢城集团有限公司 | Utilize the method for waste magnesia carbon brick preparation continuous casting tundish dry vibration material |
| CN109834252A (en) * | 2019-04-01 | 2019-06-04 | 山东钢铁集团日照有限公司 | A method of improving ladle upper nozzle service life |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102744397B (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103131969B (en) | Ceramic grid enhanced metal matrix composite perform and preparation method thereof | |
| CN105541352B (en) | A kind of chromium Al2O3C Bricks and preparation method thereof | |
| CN102744397B (en) | Sequence casting corundum-mullite composite collector nozzle | |
| CN105645977A (en) | Air brick for special steel refining and preparation method thereof | |
| CN103319183A (en) | Sequence continuous casted AL2O3-SiO2-C metal composite sliding plate | |
| CN102757251A (en) | Nanometer material contained ladle bottom argon blowing permeable brick and preparation process thereof | |
| CN102531643A (en) | Gunning lining-making method for steel ladle | |
| CN104591757A (en) | Low-temperature curing abrasion-resistant pouring material | |
| CN101804456A (en) | Carbon-free unburned brick and production method thereof | |
| CN103265297A (en) | Refining steel ladle carbon-free periclase spinel baking-free brick and preparation method thereof | |
| CN103613397B (en) | Bottom of steel ladle working lining mould material and preparation method thereof | |
| CN110256057A (en) | Exempt to impregnate sliding plate brick and preparation method thereof | |
| CN202263929U (en) | Metal continuous casting composite slag line long nozzle | |
| CN109160807A (en) | A kind of Metal Substrate aluminum-spinel slide plate and preparation method thereof | |
| CN102627465A (en) | Magnesium spinel brick, production method of magnesium spinel brick, and method for preparing RH furnace circulation pipe by using magnesium spinel brick | |
| CN108911767A (en) | A kind of RH refining furnace key position corundum system unburned brick and preparation method thereof | |
| CN109987950A (en) | A kind of unburned composite aluminum-carbon SiClx carbon brick | |
| CN101708987B (en) | Compound advanced magnesia-chromite brick for RH dip pipes and production method thereof | |
| CN101503303B (en) | Ladle brick and production technology thereof | |
| CN105084927A (en) | Method for preparing honeycomb shaped ceramic particle prefabricated block | |
| CN115650747A (en) | Magnesia-hercynite ladle wall gunning mix and preparation method thereof | |
| CN104311089A (en) | Preparation method of dense chromium oxide refractory material by utilizing gel-casting | |
| CN106810218A (en) | Carbon-free ladle brick of high intensity and preparation method thereof | |
| CN111113636B (en) | Preparation method of tundish turbulence controller for low-cost long-service-life continuous casting of special-shaped blank and tundish turbulence controller prepared by preparation method | |
| CN108484136A (en) | A kind of high abrasion sliding plate brick and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |