CN104827019B - Automatic ladle drainage device - Google Patents
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- CN104827019B CN104827019B CN201510189867.0A CN201510189867A CN104827019B CN 104827019 B CN104827019 B CN 104827019B CN 201510189867 A CN201510189867 A CN 201510189867A CN 104827019 B CN104827019 B CN 104827019B
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Abstract
The invention provides a kind of automatic ladle drainage device, the drainage system technical field belonged in smelting iron and steel.Automatic ladle drainage device, including cylinder and drainage material, the drainage material is single or multiple lift structure, and the cylinder is prefabricated thin-wall steelwork, the top of the cylinder is sealed using prefabricated thin-wall steel, and plastic closures are melted in the bottom of the cylinder using hard low temperature.Structure of the present invention is novel, simple to operate, automatic jet efficiency high, avoid that the mouth of a river clears up that problem causes completely not from opening drainage phenomenon, stuffing sand moisture-sensitive and is not difficult to be polluted by other materials in ladle and influenceed self-opening rate in pipe, saves labour, stability is good, uses safety.
Description
Technical field
The invention belongs to ladle draining technical field, and in particular to a kind of automatic ladle drainage device.
Background technology
Ladle draining is the key technology in smelting iron and steel, traditional method generally using ladle nozzle fill stuffing sand come
Realize that drainage is opened to pour, be referred to as sand replacement method.Then need to be burnt with oxygen rifle when stuffing sand fails automatic jet and blow, progress pressure, which is opened, pours,
But oxygen-enriched burning, which is blown, can increase Oxygen Content in Liquid Steel, cause steel to degrade, failure is poured if burning to blow overlong time or burn to blow open, can be caused
Production stops.So, automatic jet rate is to evaluate the good and bad important indicator of drainage agent.Function admirable, high automatic jet rate are drawn
Quicksand can realize that continuous casting overall process full guard is poured into a mould, it is ensured that continuous casting system is smooth.
Traditional sand replacement method drainage, which is opened, pours current common problem to be mainly casting rate stability poor, fills sand technique and answers
Miscellaneous, execute-in-place is difficult to grasp, and labor strength is big, and cost is high.Automatic jet rate is easily influenceed by live many factors, mainly
Including following aspect：
Ⅰ：Ladle nozzle is not cleaned out, has slag residual wherein, residual slag and stuffing sand mixing after sand is filled, by molten steel
Heat effect and be bonded together, block the mouth of a river, cause drainage to fail；
Ⅱ：When stuffing sand fills sand, intact arc sand-flood enough could not be formed, or arc sand-flood is launched the factors such as alloy
Destruction, causes drainage to fail；
Ⅲ：Without pipeline introduction method, limited by field condition, add sand technique to also result in simple hand throwing method and draw
Flow rate is reduced；
Ⅳ：The refining of overlength treats that the steel time causes the reduction of drainage rate；
Ⅴ：Stuffing sand makes moist or the reason such as contaminated causes the change of stuffing sand performance.
After all, the sand replacement method of traditional ladle draining does not open that the influence factor poured is more, and casting rate stability is poor.
The content of the invention
The technical problems to be solved by the invention are that the above-mentioned deficiency for prior art is high there is provided a kind of casting rate, surely
It is qualitative good, simplify process, simple to operate, the automatic ladle drainage device of labor and material saving.
In order to solve the above technical problems, the technical solution adopted in the present invention is：Automatic ladle drainage device, including cylinder
With drainage material, the drainage material is single or multiple lift structure, and the cylinder is prefabricated thin-wall steelwork, the top of the cylinder
Portion is sealed using prefabricated thin-wall steel, and plastic closures are melted in the bottom of the cylinder using hard low temperature.
The overall diameter of the cylinder is smaller than the interior diameter of ladle nozzle 0.1 ~ 3 millimeter.
The height of the cylinder is higher by 100 ~ 300 millimeters than ladle bottom.
When the drainage material is single layer structure, chrome ore of the drainage material by 50 ~ 95 parts by weight, 5 ~ 50 parts by weight
Silica sand, be not more than 3 parts by weight carbon black and/or graphite be made.
When the drainage material is sandwich construction, the drainage material is from top to bottom followed successively by the anti-molten steel infiltration of Fast Sintering
Layer of sand, anti-molten steel infiltration layer of sand and the quick drifting sand layer of alkaline material are sintered slowly.
The anti-molten steel infiltration layer of sand of the Fast Sintering is by the chrome ore of 60 ~ 90 parts by weight, the silica sand of 10 ~ 40 parts by weight, no
Carbon black and/or graphite more than 2 parts by weight are made；It is described sinter slowly anti-molten steel infiltration layer of sand by 60 ~ 90 parts by weight chrome ore,
The carbon black and/or graphite of the silica sand of 10 ~ 40 parts by weight, no more than 8 parts by weight are made；The quick drifting sand layer of alkaline material is magnesium
Material sand or calcareous material sand.
The granularity of the chrome ore is 20 ~ 80 mesh.
The granularity of the silica sand is 0.2 ~ 2 millimeter.
The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
Wherein, the preparation method of above-mentioned drainage material is existing routine techniques.
The application method of automatic ladle drainage device of the present invention is first to clean out ladle nozzle and install slide plate,
Then the present apparatus is inserted into ladle nozzle, closes slide plate, you can tap and smelt, smelting, which is finished, hangs ladle to continuous casting station, beats
Slide plate is opened, the plastic closures of present apparatus bottom are melted, stuffing sand outflow, the static pressure of ladle crushes the top of the present apparatus by steel
The sinter layer of water sintering, realizes automatic jet.
In addition, the size design of cylinder meets claimed below：The height of cylinder is higher by 100 ~ 300 millimeters of the bottom of ladle,
The overall diameter of cylinder is smaller than the interior diameter of ladle nozzle 0.1 ~ 3 millimeter, it is ensured that cylinder can be smoothly and close from the bottom of ladle
The ground insertion mouth of a river is defined.When cylinder injects mouth of a river closing slide plate, cylinder is higher by 100 ~ 300 millimeters of ladle bottom.
The mechanism of action of drainage material is：Molten steel injects the initial stage of ladle, and the drainage material for inserting mouth of a river upper surface is fast
Speed sintering and hinder the infiltration of molten steel, sinter layer can be born under the support of bottom material the static pressure of molten steel without
Destruction；The sintering velocity of material is slack-off simultaneously, and sinter layer is maintained at certain thickness, and opens the un-sintered material of bottom when pouring because certainly
Recast falls, and sinter layer loses support, causes sinter layer to be crushed under the static pressure effect of molten steel, realization, which is opened, pours.Meanwhile,
Research shows, the particle composition of ladle draining material, grain shape, material, structure of application method and filling pipe end etc. are direct
It is related to the height of automatic casting ratio, and the height of automatic casting ratio is related to personal safety, labor intensity, the production of workman
The quality of efficiency and steel, it is clear that keep higher automatic casting ratio to have great importance.
Many factors for influenceing ladle automatic free-opening rate, the present invention it is main from the following aspects propose improvement and
Improve all measure of ladle nozzle self-opening rate.
One is the improvement of drainage system, can be according to ladle nozzle position adjustment using the automatic drainage device of the present invention
Charging, improves the precision of charging, reduces the consumption of stuffing sand, improves the working environment of operator, improves the automatic casting of ladle
Rate.Meanwhile, present invention employs being fully sealed for top and bottom, the stuffing sand in cylinder can be avoided to make moist or pollute, protected
Demonstrate,prove the stabilization of its performance.
Two be the improvement of stuffing sand composition and proportioning, selects appropriate stuffing sand to improve casting rate.The drainage of the present invention
Material is constituted and formula is to explore to come by long-term practical experience, can be reached top layer Fast Sintering, be prevented on stuffing sand
Excess agglomeration is avoided that again while floating.Drainage material in automatic ladle drainage device of the present invention is matched somebody with somebody based on chrome ore
With silica sand, and/or additive（Carbon materials）, wherein, chrome ore has refractoriness high, and unit weight is big, good fluidity, and flow velocity is fast,
Excess agglomeration, the characteristics of steel grade is adaptable, do not study and find when chrome ore with silica sand, carbon black and/or graphite with appropriate
Ratio and combination of particle size are in use, secondary spinel becomes apparent from so that sinter layer has more preferable fragility, and apparent porosity is high, resists
Infiltration of molten steel ability is strong, and sintering character is more excellent.When lower skateboard is in an open position, the deadweight of drainage material is fallen, and is sintered
Layer broken shell under ferrostatic pressure goes downstream, and reaches automatic casting.
Three be the reasonably combined of stuffing sand grain graininess, and the grain graininess of stuffing sand, which crosses conference, causes mobility to be deteriorated, and
And rough particle can also produce scaffold phenomenon, prevent stuffing sand from flowing down completely.The present invention uses granularity for 20 ~ 80 purposes
Chrome ore, is equipped with 0.2 ~ 2 millimeter of silica sand, automatic casting ratio is significantly improved in practice.
Compared with prior art, the beneficial effects of the invention are as follows：Structure of the present invention is novel, and cost is low；Simplify technique, operation
Simply；Automatic jet efficiency high；Labour is saved, improves operating environment；Avoid nozzle blocking completely, stuffing sand not moisture-sensitive or
Pollution, stability is good, realizes that continuous casting overall process full guard is poured into a mould, it is ensured that the trouble-free operation of continuous casting system.
Brief description of the drawings
Fig. 1：The structural representation of the embodiment of the present invention 1；
Fig. 2：The structural representation of the embodiment of the present invention 5；
Wherein, 1- cylinders, the anti-molten steel infiltration layer of sand of 2- Fast Sinterings, 3- sinters anti-molten steel infiltration layer of sand, 4- alkalescence materials slowly
The quick drifting sand layer of matter, 5- hard low temperature melts plastic closures.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
Automatic ladle drainage device of the present invention, including cylinder 1 and drainage material, the drainage material are single layer structure, institute
State cylinder 1 to be made up of prefabricated thin-wall steel, the top of the cylinder 1 is sealed using prefabricated thin-wall steel, and the bottom of the cylinder 1 is adopted
Melt plastic closures 5 with hard low temperature.
Specifically, the drainage material is the chrome ore, the silica sand of 48.5 parts by weight, 1.4 parts by weight by 50.1 parts by weight
Carbon black and/or graphite be made.Wherein, the granularity of the chrome ore is 20 ~ 80 mesh；The granularity of the silica sand is 0.2 ~ 2 millimeter.
The preparation method of above-mentioned drainage material is existing routine techniques.
In addition, the size design of cylinder 1 meets claimed below：The height of cylinder 1 is higher by the milli of bottom 100 ~ 300 of ladle
Rice, the overall diameter of cylinder 1 is smaller than the interior diameter of ladle nozzle 0.1 ~ 3 millimeter, it is ensured that cylinder 1 can from the bottom of ladle smoothly and
The mouth of a river is inserted tightly into be defined.When cylinder 1 injects mouth of a river closing slide plate, cylinder 1 is higher by 100 ~ 300 millimeters of ladle bottom.
The application method of the present apparatus is first to clean out ladle nozzle and install slide plate, then insert the present apparatus
Ladle nozzle, closes slide plate, you can tap and smelt, and smelting, which is finished, hangs ladle to continuous casting station, opens slide plate, present apparatus bottom
Plastic closures be melted, stuffing sand outflow, the static pressure of ladle crushes the sinter layer that the top of the present apparatus is sintered by molten steel, real
Existing automatic jet.
The automatic ladle drainage device of the present embodiment is used in certain A steel mill, and statistics stove number is 1007 stoves；Open and pour stove number and be
1005 stoves, automatic casting ratio is 99.8%, and it is 2.5 ~ 3 hours to treat the steel time.
Embodiment 2
The apparatus structure be the same as Example 1 of the present embodiment, except that：The drainage material is by the chromium of 94.5 parts by weight
Ore in sand form, the silica sand of 5.2 parts by weight, the carbon black of 0.3 parts by weight and/or graphite are made.The granularity of the chrome ore is 20 ~ 80 mesh.
The granularity of the silica sand is 0.2 ~ 2 millimeter.
The preparation method of the drainage material is existing routine techniques.Its application method and size require be the same as Example
1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain B steel mill, and statistics stove number is 1012 stoves；Open and pour stove number and be
1010 stoves, automatic casting ratio is 99.8%, and it is 2.5 ~ 3 hours to treat the steel time.
Embodiment 3
The apparatus structure be the same as Example 1 of the present embodiment, except that：The drainage material is by the chromium of 70.8 parts by weight
Ore in sand form, the silica sand of 26.2 parts by weight, the carbon black of 3.0 parts by weight and/or graphite are made.The granularity of the chrome ore is 20 ~ 80 mesh.
The granularity of the silica sand is 0.2 ~ 2 millimeter.
Wherein, the preparation method of the drainage material is according to existing routine techniques.Its application method and size requirement are same
Embodiment 1, is repeated no more.
The automatic ladle drainage device of the present embodiment is used in certain A steel mill, and statistics stove number is 1007 stoves；Open and pour stove number and be
1007 stoves, automatic casting ratio is 100%, treats the steel time more than 3 hours.
Embodiment 4
The apparatus structure be the same as Example 1 of the present embodiment, except that：The drainage material is by the chromium of 62.7 parts by weight
Ore in sand form, the silica sand of 35.2 parts by weight, the carbon black of 2.1 parts by weight and/or graphite are made.The granularity of the chrome ore is 20 ~ 80 mesh.
The granularity of the silica sand is 0.2 ~ 2 millimeter.The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
Wherein, the preparation method of the drainage material is according to existing routine techniques.Its application method and size requirement are same
Embodiment 1, is repeated no more.
The automatic ladle drainage device of the present embodiment is used in certain C steel mill, and statistics stove number is 1023 stoves；Open and pour stove number and be
1022 stoves, automatic casting ratio is 99.9%, and it is 3 hours to treat the steel time.
Embodiment 5
As shown in Fig. 2 automatic ladle drainage device of the present invention, including cylinder 1 and drainage material, the drainage material is many
Rotating fields, the cylinder is made up of prefabricated thin-wall steel, and the top of the cylinder 1 is sealed using prefabricated thin-wall steel, the cylinder 1
Bottom using hard low temperature melt plastic closures 5.Wherein, the drainage material is from top to bottom followed successively by the anti-molten steel of Fast Sintering
Permeate layer of sand 2, sinter anti-molten steel infiltration layer of sand 3 and the quick drifting sand layer 4 of alkaline material slowly.
The anti-molten steel infiltration layer of sand of Fast Sintering is the chrome ore, the silica sand of 39.5 parts by weight, 0 weight by 60.5 parts by weight
The carbon black and/or graphite for measuring part are made；Slowly the anti-molten steel infiltration layer of sand that sinters is chrome ore, 38.2 weights by 60.8 parts by weight
The silica sand, the carbon black of 1.0 parts by weight and/or graphite of amount part are made；The quick drifting sand layer of alkaline material be magnesian sand or
Calcareous material sand.Wherein, the granularity of the chrome ore is 20 ~ 80 mesh.The granularity of the silica sand is 0.2 ~ 2 millimeter.It is described magnesia
The granularity of material sand or calcareous material sand is 0.3 ~ 3 millimeter.
Wherein, above-mentioned Fast Sintering anti-molten steel infiltration layer of sand 2, sinter anti-molten steel infiltration layer of sand 3 slowly and alkaline material is quick
The preparation method of drifting sand layer 4 is according to existing routine techniques.Its application method and size require be the same as Example 1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain A steel mill, and statistics stove number is 1007 stoves；Open and pour stove number and be
1007 stoves, automatic casting ratio is 100%, and it is 3 hours to treat the steel time.
Embodiment 6
The apparatus structure be the same as Example 5 of the present embodiment, except that：The anti-molten steel infiltration layer of sand of the Fast Sintering be by
The chrome ore of 87.9 parts by weight, the silica sand of 10.1 parts by weight, the carbon black of 2 parts by weight and/or graphite are made；It is described to sinter anti-steel slowly
Water penetration layer of sand is by the chrome ore of 87.0 parts by weight, the silica sand of 10.8 parts by weight, the carbon black of 1.2 parts by weight and/or graphite system
Into；The quick drifting sand layer of alkaline material is magnesian sand or calcareous material sand.The granularity of the chrome ore is 20 ~ 80 mesh.
The granularity of the silica sand is 0.2 ~ 2 millimeter.The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
The above-mentioned anti-molten steel of Fast Sintering permeates layer of sand 2, sinters anti-molten steel infiltration layer of sand 3 and the quick drifting sand layer of alkaline material slowly
4 preparation method is according to existing routine techniques.Its application method and size require be the same as Example 1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain B steel mill, and statistics stove number is 1012 stoves；Open and pour stove number and be
1011 stoves, automatic casting ratio is 99.9%, and it is 3 hours to treat the steel time.
Embodiment 7
The apparatus structure be the same as Example 5 of the present embodiment, except that：The anti-molten steel infiltration layer of sand of the Fast Sintering be by
The chrome ore of 80.7 parts by weight, the silica sand of 18.6 parts by weight, the carbon black of 0.7 parts by weight and/or graphite are made；The slow sintering is anti-
Molten steel infiltration layer of sand is by the chrome ore of 80.1 parts by weight, the silica sand of 11.9 parts by weight, the carbon black of 8 parts by weight and/or graphite system
Into；The quick drifting sand layer of alkaline material is magnesian sand or calcareous material sand.Wherein, the granularity of the chrome ore be 20 ~
80 mesh.The granularity of the silica sand is 0.2 ~ 2 millimeter.The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
The above-mentioned anti-molten steel of Fast Sintering permeates layer of sand 2, sinters anti-molten steel infiltration layer of sand 3 and the quick drifting sand layer of alkaline material slowly
4 preparation method is according to existing routine techniques.Its application method and size require be the same as Example 1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain C steel mill, and statistics stove number is 1023 stoves；Open and pour stove number and be
1023 stoves, automatic casting ratio is 100%, and it is 3 ~ 4 hours to treat the steel time.
Embodiment 8
The apparatus structure be the same as Example 5 of the present embodiment, except that：The anti-molten steel infiltration layer of sand of the Fast Sintering be by
The chrome ore of 68.5 parts by weight, the silica sand of 31.1 parts by weight, the carbon black of 0.4 parts by weight and/or graphite are made；The slow sintering is anti-
Molten steel infiltration layer of sand is by the carbon black and/or graphite of the chrome ore, the silica sand of 28.5 parts by weight, 3.2 parts by weight of 68.3 parts by weight
It is made；The quick drifting sand layer of alkaline material is magnesian sand or calcareous material sand.Wherein, the granularity of the chrome ore is 20
~ 80 mesh.The granularity of the silica sand is 0.2 ~ 2 millimeter.The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
The above-mentioned anti-molten steel of Fast Sintering permeates layer of sand 2, sinters anti-molten steel infiltration layer of sand 3 and the quick drifting sand layer of alkaline material slowly
4 preparation method is according to existing routine techniques.Its application method and size require be the same as Example 1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain B steel mill, and statistics stove number is 1012 stoves；Open and pour stove number and be
1012 stoves, automatic casting ratio is 100%；The steel time is treated more than 4 hours, the sinter layer of formation is uniform and thin, moderate strength.
Embodiment 9
The apparatus structure be the same as Example 5 of the present embodiment, except that：The anti-molten steel infiltration layer of sand of the Fast Sintering be by
The chrome ore of 72.7 parts by weight, the silica sand of 26.2 parts by weight, the carbon black of 1.1 parts by weight and/or graphite are made；The slow sintering is anti-
Molten steel infiltration layer of sand is by the chrome ore of 79.1 parts by weight, the silica sand of 20.9 parts by weight, the carbon black of 0 parts by weight and/or graphite system
Into；The quick drifting sand layer of alkaline material is magnesian sand or calcareous material sand.Wherein, the granularity of the chrome ore be 20 ~
80 mesh.The granularity of the silica sand is 0.2 ~ 2 millimeter.The granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 millimeter.
The above-mentioned anti-molten steel of Fast Sintering permeates layer of sand 2, sinters anti-molten steel infiltration layer of sand 3 and the quick drifting sand layer of alkaline material slowly
4 preparation method is according to existing routine techniques.Its application method and size require be the same as Example 1, repeat no more.
The automatic ladle drainage device of the present embodiment is used in certain C steel mill, and statistics stove number is 1023 stoves；Open and pour stove number and be
1023 stoves, automatic casting ratio is 100%, and it is 3.5 hours to treat the steel time.
Comparative example 1
The apparatus structure be the same as Example 1 of the present embodiment, except that：The drainage material is by the chrome ore of 70 parts by weight
Sand, the quartz sand of 22 parts by weight, the crystalline flake graphite of the potassium feldspar of 7 parts by weight and 1 parts by weight are made.
The preparation method of the drainage material is according to existing routine techniques.Its application method be the same as Example 1, no longer goes to live in the household of one's in-laws on getting married
State.
The automatic ladle drainage device of the present embodiment is used in certain A steel mill, and statistics stove number is 1007 stoves；Open and pour stove number and be
991 stoves, automatic casting ratio is 98.4%；It is about 100 minutes to treat the steel time.
Comparative example 2
The apparatus structure be the same as Example 1 of the present embodiment, except that：The drainage material is by the chrome ore of 73 parts by weight
Sand, high-purity crystobalite sand, the fused magnesite of 10 parts by weight of 17 parts by weight are made.
The preparation method of the drainage material is according to existing routine techniques.Its application method be the same as Example 1, no longer goes to live in the household of one's in-laws on getting married
State.
The automatic ladle drainage device of the present embodiment is used in certain B steel mill, and statistics stove number is 1012 stoves；Open and pour stove number and be
990 stoves, automatic casting ratio is 97.8%；It is 115 minutes to treat the steel time.
The present invention is effectively improved by the combination of device and drainage material it can be seen from above-described embodiment and comparative example
Automatic casting ratio, uses, automatic casting ratio has generally reached 100% in different steel mills, treats that the steel time is generally small more than 2.5
When；And drainage material wide material sources, execute-in-place are simple, pollution-free.The drainage material of the present invention has refractoriness height, high temperature
Sintering character is good, anti-molten steel and slag corrosion are good, particle size distribution is uniform, good fluidity, coefficient of thermal expansion are smaller, cost is suitable
Preferably with self-opening rate it is high the characteristics of.
Claims (4)
1. automatic ladle drainage device, including cylinder and drainage material, it is characterised in that：The cylinder is prefabricated thin-wall steel
Part, the top of the cylinder is sealed using prefabricated thin-wall steel, and plastic closures are melted in the bottom of the cylinder using hard low temperature；
The drainage material is sandwich construction, the drainage material be from top to bottom followed successively by Fast Sintering anti-molten steel infiltration layer of sand,
Slowly anti-molten steel infiltration layer of sand and the quick drifting sand layer of alkaline material are sintered；
The anti-molten steel infiltration layer of sand of Fast Sintering is by the chrome ore of 60 ~ 90 parts by weight, the silica sand of 10 ~ 40 parts by weight, no more than 2
The carbon black and/or graphite of parts by weight are made；It is described sinter slowly anti-molten steel infiltration layer of sand by 60 ~ 90 parts by weight chrome ore, 10 ~ 40
The silica sand of parts by weight, the carbon black of 3.2 ~ 8 parts by weight and/or graphite are made；The quick drifting sand layer of alkaline material is magnesian
Sand or calcareous material sand.
2. automatic ladle drainage device as claimed in claim 1, it is characterised in that：The overall diameter of the cylinder compares ladle nozzle
Interior diameter it is small 0.1 ~ 3 millimeter.
3. automatic ladle drainage device as claimed in claim 1, it is characterised in that：The height of the cylinder is higher than ladle bottom
Go out 100 ~ 300 millimeters.
4. the automatic ladle drainage device as described in any one of claim 1 ~ 3, it is characterised in that：The granularity of the chrome ore is
20 ~ 80 mesh, the granularity of the silica sand is 0.2 ~ 2 millimeter, and the granularity of the magnesian sand or calcareous material sand is 0.3 ~ 3 milli
Rice.
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| CN201510189867.0A CN104827019B (en) | 2015-04-21 | 2015-04-21 | Automatic ladle drainage device |
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| CN106881458B (en) * | 2017-03-23 | 2019-01-18 | 张国令 | A kind of refining ladle flow diverter and preparation method thereof |
| CN108326274A (en) * | 2018-02-26 | 2018-07-27 | 首钢京唐钢铁联合有限责任公司 | A kind of process that ladle draining sand is added |
| CN110681851B (en) * | 2019-11-08 | 2021-05-04 | 鞍山市和丰耐火材料有限公司 | Compositely-thrown steel ladle chromium drainage agent with ultrahigh self-pouring rate |
| CN113979759A (en) * | 2021-11-16 | 2022-01-28 | 中天钢铁集团有限公司 | Drainage sand suitable for high-manganese steel continuous casting production and high self-opening rate and use method |
| CN114042904B (en) * | 2021-12-01 | 2023-01-24 | 山东钢铁集团日照有限公司 | Method for improving ladle self-opening rate |
| CN114247877A (en) * | 2021-12-03 | 2022-03-29 | 山东莱钢永锋钢铁有限公司 | Device and method for casting of square billet continuous casting tundish |
| CN114247876A (en) * | 2021-12-14 | 2022-03-29 | 吉林金钢钢铁股份有限公司 | Ladle stuffing sand adding device and method |
| CN114453577B (en) * | 2022-01-25 | 2024-02-13 | 何霞 | Sizing quick-change tundish drainage rod and drainage rod casting process |
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