CN212917609U - Ladle drainage device for ultra-long steel waiting - Google Patents
Ladle drainage device for ultra-long steel waiting Download PDFInfo
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- CN212917609U CN212917609U CN202020754310.3U CN202020754310U CN212917609U CN 212917609 U CN212917609 U CN 212917609U CN 202020754310 U CN202020754310 U CN 202020754310U CN 212917609 U CN212917609 U CN 212917609U
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Abstract
The utility model discloses a ladle drainage device for overlong steel waiting, which comprises a barrel body and drainage materials, wherein the drainage materials are filled in the barrel body, the barrel body is a prefabricated thin-wall steel part, the top of the barrel body is sealed by adopting prefabricated thin-wall steel, and the bottom of the barrel body is sealed by adopting hard low-temperature melting plastics; wherein: a refractory material component is pre-embedded in the drainage material, the refractory material component is located at the position where the upper end of the refractory material component is located at the position where a sintering layer is formed, the lower part of the refractory material component is fixedly connected with a pulling rope, the other end of the pulling rope is tied with a heavy object, the heavy object is located at the lower part of the refractory material component, and the heavy object and the pulling rope are pre-filled in the drainage material. Compared with the prior art, the method has the advantages of ultra-long steel waiting time, high casting rate and small pollution to molten steel, and is suitable for steel types with ultra-long steel receiving time.
Description
Technical Field
The utility model belongs to the technical field of the ladle drainage, concretely relates to can overlength treat ladle drainage device of steel.
Background
In order to realize automatic drainage of molten steel in the using process of a traditional steel ladle, the adopted process method is to pour drainage sand into a steel ladle brick cup from the position of a ladle opening, the operation efficiency is low, the consumption of the drainage sand is high, and meanwhile, because the steel ladle is a hot steel ladle, the temperature in the ladle is close to 1000 ℃, personnel are influenced by high-temperature air waves, and the hidden danger that the steel ladle slides and falls into the steel ladle exists. In recent years, the ladle drainage device is an automatic ladle drainage product capable of completely replacing ladle drainage sand, improves the steel waiting time, greatly improves the automatic drainage rate of the ladle, is relatively stable, and reduces the labor intensity of workers. The ladle drainage device is structurally characterized in that drainage sand is added into a metal shell, side holes are formed in the side face of the metal shell, the side holes are sealed by fusible films, the upper end of the metal shell is sealed, and the lower end of the metal shell is sealed by the fusible films. For example, an authorized bulletin date 2011.05.04 of an authorized bulletin number CN 201815653U discloses an automatic ladle flow diverter applied to a steelmaking system. The purpose is to greatly reduce the consumption of the drainage sand, simplify the operation procedure and simultaneously achieve the purpose of automatic drainage of the ladle. The technical key points are that the device comprises a cylinder body with one closed end, drainage sand in the cylinder body and a fusible material at the other end of the closed cylinder body, wherein the cylinder body is made of a material which can be melted in molten steel; the cylinder body is an integral body formed by a cylinder, and one or more side holes are formed in the side surface of the cylinder body.
The automatic ladle drainage device comprises a barrel body and a drainage material, wherein the drainage material is of a single-layer or multi-layer structure, the barrel body is a prefabricated thin-wall steel part, the top of the barrel body is sealed by the prefabricated thin-wall steel, and the bottom of the barrel body is sealed by hard low-temperature melting plastic. The invention can improve the automatic drainage efficiency and increase the steel waiting time which generally exceeds 2.5 hours if the steel waiting time in the material is increased. In production practice, the special condition that the steel waiting time reaches 3-4 hours sometimes occurs, so that high-temperature molten steel is contacted with the drainage sand for a long time to generate a too thick sintering layer, and the steel ladle cannot be normally poured. In addition, the steel receiving time of some steel grades is very long, such as stainless steel, electrical steel and the like, and the average steel receiving time is more than 200min and is far longer than that of other steel grades. And the boiling rate of the ladle drainage device in the prior art is difficult to meet the requirement. Therefore, research and development of an ultra-long ladle drainage device for waiting for steel is one of the directions which are continuously researched by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
For solving the technical defect that prior art exists, the utility model aims to provide a treat ladle drainage device of steel when overlength has overlength and treats the steel time, and it is high to open the casting rate, and it is little to the molten steel pollution.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the ladle drainage device for overlong steel waiting comprises a cylinder body and drainage materials, wherein the drainage materials are filled in the cylinder body, the cylinder body is a prefabricated thin-wall steel part, the top of the cylinder body is sealed by adopting prefabricated thin-wall steel, and the bottom of the cylinder body is sealed by adopting hard low-temperature melting plastics; the method is characterized in that: a refractory material component is pre-embedded in the drainage material, the refractory material component is located at the position where the upper end of the refractory material component is located at the position where a sintering layer is formed, the lower part of the refractory material component is fixedly connected with a pulling rope, the other end of the pulling rope is tied with a heavy object, the heavy object is located at the lower part of the refractory material component, and the heavy object and the pulling rope are pre-filled in the drainage material.
Preferably, the sand discharge port is formed in the upper portion of the cylinder body, hard low-temperature melting plastic is adopted to seal the sand discharge port, the sand discharge port is opened when the hard low-temperature melting plastic is melted in the using process, and partial drainage materials flow out of gaps of the filling water port to protect the cylinder body and prevent molten steel from permeating.
Preferably, the weight is a steel ball or a steel block, and the pulling rope is a steel wire or an iron chain or other high-temperature-resistant wires or chains.
Preferably, the traction rope is spirally embedded in the drainage material between the refractory material component and the steel ball or the steel block.
Preferably, a protective cover is arranged on the upper side of the heavy object, and the traction rope is wound in the protective cover.
Preferably, the refractory member is a corundum or zircon material member.
Preferably, the refractory member is an elongate body member having a cross-sectional shape or a circular or diamond shape.
Preferably, the cross-sectional dimension of the refractory member is 10-20mm long and 10-20mm wide.
Preferably, the drainage material is a chromium material, a zirconium material, a siliceous material, a magnesian material or composite drainage sand thereof.
Adopt above-mentioned technical scheme's beneficial effect: after molten steel is added into the ladle drainage device, drainage materials in the steel cylinder are distributed in a sintering layer and a powder flowing layer from top to bottom. Because the steel ladle is too long to wait for the steel time, the thickness of the sintering layer is thicker, the static pressure of the molten steel can not crush the sintering layer, which is also the reason that the casting can not be started. The utility model discloses in pre-buried a refractory material component in the drainage material, this refractory material component position is located sintering layer position for its upper end. That is, the upper end portion of the refractory member is located at the sintered layer, forming an integral structure with the sintered layer. The lower part of the refractory material component is fixedly connected with a pulling rope, the other end of the pulling rope is tied with a weight, the weight is positioned at the lower part of the refractory material component, and the weight and the pulling rope are pre-filled in the drainage material. When the sliding plate of the ladle burning port is opened, the flowing layer material at the lower layer of the drainage device falls and flows out rapidly, and the heavy object falls along with the weight when losing the support of the powder layer. The utility model discloses in this moment the refractory material component because of its upper end and sintering layer sintering together, when the whole releases of length of heavy object whereabouts stay cord, the heavy object has great kinetic energy, heavy object tractive refractory material component, pull out and together whereabouts it from the sintering layer, the sintering layer is pulled out the back at the refractory material component, form a breach at the sintering layer intermediate position, the molten steel flows out under the effect of static pressure, the sintering layer is under the scouring of the molten steel that flows out, all break, lose the holding power, flow out along with the molten steel together, thereby realize opening and burn completely. The utility model discloses the creative gravitational potential energy that utilizes the heavy object turns into kinetic energy at the potential energy of opening the heavy object when watering, and the refractory material component that tractive and sintering bed sintering are in the same place destroys the sintering bed to the realization is successfully opened and is watered. Compared with the prior art, the method can meet the requirement of ultra-long waiting time and has high casting rate. The weight is steel balls or steel blocks, and molten steel is not polluted. The refractory material component is a corundum or zirconium material component, has high heat-resistant temperature, can keep corresponding strength in use, and is suitable for being used in different steel grades. The refractory material is an elongated member, the cross section of the elongated member is in a cross shape, the cross section dimension is 10-20 mm/10-20 mm, a cross-shaped notch can be formed in the sintered layer after the refractory material member is pulled out of the sintered layer, and the notch is easily washed into a larger notch by molten steel, so that the whole sintered layer is damaged, and the success of casting is ensured.
The zircon material diversion sand has the excellent performances of low thermal expansion rate, good thermal conductivity, large volume density, good stability, difficult wetting by molten steel and the like, and is in a particle shape and good in fluidity.
The chromium material diversion sand has the advantages of high specific gravity, good fluidity, high melting point and no excessive sintering, and is beneficial to forming a continuous sintering layer. At high temperature, FeO in chromite reacts and dissolves and forms secondary spinel, so that the volume of a sintering layer changes to generate cracks, when the sliding plate is opened, unsintered drainage sand at the lower part of the water gap flows out rapidly, the cracks of the sintering layer expand rapidly, and the sintering layer is completely destroyed under the action of static pressure of molten steel, thereby achieving the purpose of automatic casting.
The magnesia material drainage sand is alkalescent, is beneficial to the formation of the alkaline environment of the tundish, and has good functions of desulfurizing and adsorbing impurities on molten steel.
Drawings
The following describes the present invention in further detail with reference to the attached drawings.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a situation of a use state;
FIG. 3 is a schematic drawing showing a steel ball in a pulled state;
FIG. 4 is a schematic cross-sectional view of a refractory component;
fig. 5 is a schematic structural view of the steel ball and the pulling rope.
Detailed Description
The ladle drainage device for overlong waiting steel shown in figures 1-5 is inserted into a pouring gate 9 of a ladle when in use, the bottom of the ladle is supported by a sliding plate 6, the sliding plate 6 is opened, and molten steel in the ladle is drained and poured, so that the requirement of overlong waiting time can be met, and the pouring rate is high. The ladle drainage device for treating steel in the overlong period comprises a barrel body 1 and drainage materials 5, wherein the drainage materials 5 are filled in the barrel body 1, the barrel body is a prefabricated thin-wall steel part, the top of the barrel body is sealed by adopting prefabricated thin-wall steel, the bottom of the barrel body is of an open structure and is sealed by hard low-temperature melting plastics 8, the drainage materials 5 are sealed in the barrel body 1, the drainage materials are prevented from moving in the carrying and using process, and meanwhile, moisture in air is prevented from entering the drainage materials. A refractory material component 2 is embedded in the drainage material in advance, the refractory material component 2 is a corundum or zirconium material component or other high-temperature resistant components, the refractory material component is located at the position that the upper end of the refractory material component is located at the position where a sintering layer is formed, a traction rope 3 is fixedly connected to the lower portion of the refractory material component, a weight 4 is tied to the other end of the traction rope 3, the weight is located at the lower portion of the refractory material component, and the weight 4 and the traction rope 3 are both pre-filled in the drainage material 5. The refractory material component is an elongated body component, the cross section is in a cross shape, and the cross section is 10-20mm long and 10-20mm wide. The elongate body member may also be circular or diamond or rectangular in cross-sectional shape. The cross-sectional shape is such that when the refractory material is drawn out of the position of the sintered layer, a hole is formed in the middle of the sintered layer, from which hole the molten steel in the upper part of the sintered layer can flow. The cross-sectional shape of the refractory member is designed to make it easier for the molten steel to crush or scour the sintered layer. Thus, the cross-sectional shape may also be triangular, pentagonal or other irregular shape. The weight 4 is a steel ball or a steel block, and the traction rope is a steel wire or an iron chain or other high-temperature-resistant wires or chains. The function of the pulling rope is to pull out the refractory material component from the sintering layer through the pulling force of the falling of the tied steel balls, so that the weight of the steel balls and the length of the pulling rope ensure that the refractory material component is pulled out from the sintering layer, and in order to prevent the pulling rope from knotting and winding, the pulling rope is spirally embedded in a drainage material between the refractory material component and the steel balls or the steel blocks. As shown in fig. 5, as another structure of the weight, a protective cover is arranged on the upper side of the weight, the pulling rope is wound in the protective cover, and drainage sand is filled in the protective cover, so that the position stability of the pulling rope can be protected by the drainage sand, and the phenomenon that the position of the pulling rope is changed to cause winding knotting during storage, transportation or installation is prevented.
As another optimized structure, as shown in fig. 2, a sand discharge port is arranged at the upper part of the cylinder body, hard low-temperature melting plastic is adopted to seal the sand discharge port, the sand discharge port is opened by melting the sand discharge port by the hard low-temperature melting plastic in the use process, and part of drainage materials flow out to fill a gap of the water gap, so that the cylinder body is protected and molten steel is prevented from permeating.
The utility model discloses treat the drainage material in the ladle drainage device's of steel for overlength is chromium material or zirconium material or siliceous material or magnesium material or its compound drainage sand. The zircon material diversion sand has the excellent performances of low thermal expansion rate, good thermal conductivity, large volume density, good stability, difficult wetting by molten steel and the like, and is in a particle shape and good in fluidity. The chromium material diversion sand has the advantages of high specific gravity, good fluidity, high melting point and no excessive sintering, and is beneficial to forming a continuous sintering layer. At high temperature, FeO in chromite reacts and dissolves and forms secondary spinel, so that the volume of a sintering layer changes to generate cracks, when the sliding plate is opened, unsintered drainage sand at the lower part of the water gap flows out rapidly, the cracks of the sintering layer expand rapidly, and the sintering layer is completely destroyed under the action of static pressure of molten steel, thereby achieving the purpose of automatic casting. The magnesia material drainage sand is alkalescent, is beneficial to the formation of the alkaline environment of the tundish, and has good functions of desulfurizing and adsorbing impurities on molten steel. Through the improvement of the structure of the ladle drainage device and the selection improvement of the drainage materials, the gravitational potential energy is converted into kinetic energy, the refractory material component is pulled, the refractory material component is separated from the sintering layer, a gap is formed in the sintering layer, and the gap is washed by molten steel in the flowing-out process, so that the whole sintering layer is broken, the casting is started, and the problem that the casting fails because the molten steel cannot break the sintering layer by static pressure when the steel is waited for in an overlong period is solved. Therefore, the ladle drainage device has the advantages of super-long steel waiting time which can reach 3-4 hours, high casting rate and little pollution to molten steel.
Claims (9)
1. A ladle drainage device for overlong waiting steel comprises a cylinder body and drainage materials, wherein the drainage materials are filled in the cylinder body, the cylinder body is a prefabricated thin-wall steel part, the top of the cylinder body is sealed by adopting prefabricated thin-wall steel, and the bottom of the cylinder body is sealed by adopting hard low-temperature melting plastic; the method is characterized in that: a refractory material component is pre-embedded in the drainage material, the refractory material component is located at the position where the upper end of the refractory material component is located at the position where a sintering layer is formed, the lower part of the refractory material component is fixedly connected with a pulling rope, the other end of the pulling rope is tied with a heavy object, the heavy object is located at the lower part of the refractory material component, and the heavy object and the pulling rope are pre-filled in the drainage material.
2. The ladle drainage device for overlong-time waiting steel according to claim 1, which is characterized in that: the sand discharging port is formed in the upper portion of the cylinder body, hard low-temperature melting plastics are adopted to seal the sand discharging port, the sand discharging port is opened when the hard low-temperature melting plastics are melted in the using process, and partial drainage materials flow out to fill gaps of the water gap, so that the cylinder body is protected, and molten steel is prevented from permeating.
3. The ladle drainage device for overlong-time waiting steel according to claim 1, which is characterized in that: the weight is a steel ball or a steel block, and the traction rope is a steel wire or an iron chain or other high-temperature-resistant wires or chains.
4. The ladle drainage device for overlong waiting steel according to claim 3, wherein: the traction rope is spirally embedded in the drainage material between the refractory material component and the steel ball or the steel block.
5. The ladle drainage device for overlong-time waiting steel according to claim 1, which is characterized in that: the upper side of the weight is provided with a protective cover, and the traction rope is wound in the protective cover.
6. The ladle drainage device for overlong-time waiting steel according to claim 1, which is characterized in that: the refractory material component is a corundum or zircon material component.
7. The ladle drainage device for overlong waiting steel according to claim 6, wherein: the refractory material component is an elongated body component, and the cross section of the elongated body component is in a cross shape, a circle shape or a diamond shape.
8. The ladle drainage device for overlong waiting steel according to claim 6, wherein: the cross section of the refractory material member is 10-20mm long and 10-20mm wide.
9. The ladle drainage device for overlong-time waiting steel according to claim 1, which is characterized in that: the drainage material is a chromium material, a zirconium material, a siliceous material, a magnesian material or composite drainage sand thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754310.3U CN212917609U (en) | 2020-05-09 | 2020-05-09 | Ladle drainage device for ultra-long steel waiting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020754310.3U CN212917609U (en) | 2020-05-09 | 2020-05-09 | Ladle drainage device for ultra-long steel waiting |
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| CN212917609U true CN212917609U (en) | 2021-04-09 |
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| CN202020754310.3U Active CN212917609U (en) | 2020-05-09 | 2020-05-09 | Ladle drainage device for ultra-long steel waiting |
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