CN211227208U - Pumping pouring repair equipment for converter tapping hole - Google Patents
Pumping pouring repair equipment for converter tapping hole Download PDFInfo
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- CN211227208U CN211227208U CN201922266978.3U CN201922266978U CN211227208U CN 211227208 U CN211227208 U CN 211227208U CN 201922266978 U CN201922266978 U CN 201922266978U CN 211227208 U CN211227208 U CN 211227208U
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Abstract
The utility model provides a pumping pouring repair device for a converter tapping hole, belonging to the technical field of construction and equipment of fire-resistant self-flowing castable, comprising a support frame fixed on a carrying platform, and a storage device fixed on the support frame; the material storage device is connected with a feeding hole of the pumping device through the material conveying device, and a discharging hole of the pumping device is communicated with the heat-preservation chute through a discharging pipe; the material conveying device and the pumping device are both fixed on the carrying platform; the material conveying device is also communicated with a high-pressure air source through a high-pressure air pipe. The utility model utilizes the thermal state self-flow performance of the castable, utilizes the heat preservation chute to convey the castable to the interior of the converter, pours the castable into small gaps between the periphery of the casing brick and the large brick of the steel tapping hole, and utilizes the residual temperature of the lining brick of the converter to sinter; adding a liquid binder in the self-flowing process of the castable; the castable is a magnesia self-flow castable, the main raw materials are sintered magnesia and fused magnesia, explosion-proof fibers and a polycarboxylic acid high-efficiency dispersant are added, and silica micropowder, graphite or carbon black powder are compounded.
Description
Technical Field
The utility model relates to a construction of refractory pouring material that flows automatically and equip technical field, concretely relates to pumping pouring repair equipment after converter tapping hole is changed.
Background
The integrity of the steel-tapping hole of the converter directly controls the slag discharge amount of the converter and directly influences the alloy yield and the subsequent treatment (LF, RH and the like), so that the steel-tapping hole repairing technology is developed to the present, the steel-tapping hole related repairing technology is arranged at an important position no matter whether the converter is large or small, and refractory repairing materials mainly comprise traditional dry gunning materials, magnesium-chromium castable and the like. The magnesium-chromium castable gradually develops from the original traditional cement combination to ultra-low cement or even cement-free combination, and is corresponding to the development of the ultra-micro powder technology and the water reducing agent technology, and the castable for replacing and repairing the joint filling at the tap hole is developing towards low water adding amount and high self-fluidity.
The dry gunning material repair has short and uneven mixing time of the material and water due to the addition of low-melting inorganic salt and uncertainty of water addition amount, and the material has loose structure to generate air gaps and low strength; in addition, the dry gunning material has fine granularity and poor spalling resistance, so that the service life of a steel outlet is not high and can meet the use requirement of the converter. Therefore, at present, more magnesium-chromium castable is adopted on site to solve the problem of air gaps generated around a steel-tapping hole sleeve and slow down the damage speed of the steel-tapping hole, but due to the limitation of converter hot patching construction conditions, a shovel needs to be manually used for stirring on site, then a trolley is used for pushing the mixture into a furnace, and then the castable is put into the furnace in a manual material-turning mode; the castable is limited by the influence of the residual temperature of a furnace lining on site and inaccuracy caused by long-distance throwing construction, so that the castable cannot completely and accurately enter a gap between a steel-tapping hole sleeve and a brick cup, and the hot brick lining is damaged on site by adopting the assistance of flushing and brushing of a tap water pipe, and the castable is more in pores and poor in compactness after being sintered due to the influence of high temperature of the furnace lining and flushing and mixing of tap water, so that the castable is not resistant to slag corrosion, low in strength and short in service life; meanwhile, a certain amount of chromium oxide contained in the material seriously pollutes the field workshop environment and has severe influence on the health of the workers in the steel mill.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a converter tap hole pump sending pouring repair equipment utilizes pouring repair equipment to pour into converter tap hole with high self-flowing pouring material, pours the joint filling to the tap hole after the change and repairs to solve the technical problem who exists among the above-mentioned background art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a converter tapping hole pump sending pouring repair equipment, include:
the device comprises a carrying platform, a storage device and a lifting device, wherein a supporting frame is fixed on the carrying platform, and the storage device is fixed on the supporting frame; the material storage device is connected with a feeding hole of the pumping device through a material conveying device, and a discharging hole of the pumping device is communicated with the heat-preservation chute through a discharging pipe; the material conveying device and the pumping device are both fixed on the carrying platform; the material conveying device is also communicated with a high-pressure air source through a high-pressure air pipe.
Preferably, the carrying platform is a carrying trolley and comprises a driving steering wheel, a driven wheel, a power transmission shaft, a vehicle body carrying platform, a support frame/plate, a motor speed reducer assembly and a direction control rod;
the motor speed reducer component comprises a power motor, and the power motor is connected with a speed reducer;
the speed reducer is connected with the driving steering wheel, the driving power transmission shaft is connected with the driven wheel, power transmission of the power motor is utilized during movement, and the direction control rod is manually operated to adjust and control the moving advancing direction of the driving steering wheel.
Preferably, the material conveying device comprises a short spiral stirrer, a high-pressure air pipe, a material conveying pipeline, a sealing valve and a three-way connecting pipe; the spiral stirrer is communicated with the material storage device through a material conveying pipeline, a discharge hole of the spiral stirrer is communicated with a first end of a three-way connecting pipe through a sealing valve, a second end of the three-way connecting pipe is communicated with a high-pressure air pipe through the sealing valve, and a third end of the three-way connecting pipe is communicated with a feed inlet of the pumping device through the sealing valve.
Preferably, the pumping device is a pumping machine.
Preferably, the discharge hole of the pumping machine is communicated with the heat preservation chute through a discharge pipe.
Preferably, the heat-preservation chute comprises an inner-layer metal pipe, a layer of heat-preservation refractory material is poured on the outer side of the inner-layer metal pipe, and the outer layer of the heat-preservation refractory material is wrapped by an aluminum silicate fiber felt.
Preferably, the inner layer metal pipe is formed by butt joint of two semicircular steel pipes through buckles.
The utility model discloses beneficial effect: the utility model solves the problems of excessive water addition (up to more than 30 percent), poor compactness, non-scouring resistance, unmatched service life and sleeve pipe and the like of most of the joint filling repair materials and dry gunning materials after the steel tapping hole of the converter is replaced at present, effectively ensures that the gap between the steel tapping hole sleeve pipe and the brick cup can be fully filled, the bonding performance is good, the material sintering is uniform, the anti-explosion performance is high, ensures that the steel tapping hole sleeve pipe achieves the best design service life, and ensures the simplicity and convenience in site construction operation, the equipment and the safety; in addition, the minimum water adding amount of the pouring self-flowing material can be less than or equal to 4 percent, and the pouring self-flowing material has good self-flowing property, so that the repairing construction and material sintering time can be greatly shortened.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a structural diagram of a pumping, pouring and repairing device for a converter tap hole according to an embodiment of the present invention.
FIG. 2 is a schematic view of a pumping, pouring and repairing state of a converter tap hole according to an embodiment of the present invention.
Wherein: 1-a carrying platform; 2-a support frame; 3-a material storage device; 4-a material conveying device; 5-a pumping device; 6-a discharge pipe; 7-a heat preservation chute; 8-high-pressure air pipe; 9-a vehicle body bearing platform; 10-a conveying pipeline; 11-casting material; 12-casing bricks; 13-tapping hole large brick; 14-furnace lining brick.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or modules having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or modules, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, and/or groups thereof.
It should be noted that, unless otherwise explicitly stated or limited, the terms "connected" and "fixed" in the embodiments of the present invention are to be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, connected between two elements, or interacting between two elements, unless explicitly stated or limited. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking specific embodiments as examples with reference to the drawings, and the embodiments do not constitute limitations of the embodiments of the present invention.
It will be understood by those skilled in the art that the drawings are merely schematic representations of one embodiment, and that the elements or devices in the drawings are not necessarily required to practice the invention.
Examples
As shown in fig. 1, an embodiment of the present invention provides a pumping pouring repair device for a converter tap hole, including: the device comprises a carrying platform 1, wherein a support frame 2 is fixed on the carrying platform 1, and a material storage device 3 is fixed on the support frame 2; the material storage device 3 is connected with a feed inlet of a pumping device 5 through a material conveying device 4, and a discharge outlet of the pumping device 5 is communicated with a heat-preservation chute 7 through a discharge pipe 6; the material conveying device 4 and the pumping device 5 are both fixed on the carrying platform 1; the material conveying device 4 is also communicated with a high-pressure air source through a high-pressure air pipe 8.
The carrying platform 1 is a carrying trolley and comprises a driving steering wheel, a driven wheel, a power transmission shaft, a vehicle body carrying platform 9, a support frame/plate, a motor speed reducer assembly and a direction control rod;
the motor speed reducer component comprises a power motor, and the power motor is connected with a speed reducer;
the speed reducer is connected with the driving steering wheel, the driving power transmission shaft is connected with the driven wheel, power transmission of the power motor is utilized during movement, and the direction control rod is manually operated to adjust and control the moving advancing direction of the driving steering wheel.
The material conveying device 4 comprises a short spiral stirrer, a high-pressure air pipe, a material conveying pipeline, a sealing valve and a three-way connecting pipe; the spiral stirrer is communicated with the material storage device 3 through a material conveying pipeline 10, a discharge hole of the spiral stirrer is communicated with a first end of a three-way connecting pipe through a sealing valve, a second end of the three-way connecting pipe is communicated with a high-pressure air pipe 8 through the sealing valve, and a third end of the three-way connecting pipe is communicated with a feed inlet of a pumping device through the sealing valve.
The pumping device is a pumping machine.
And a discharge hole of the pumping machine is communicated with the heat-preservation chute through a discharge pipe.
The heat-preservation chute comprises an inner-layer metal pipe, a layer of heat-preservation refractory material is poured on the outer side of the inner-layer metal pipe, and the outer layer of the heat-preservation refractory material is wrapped by an aluminum silicate fiber felt.
The inner layer metal pipe is formed by butt joint of two semicircular steel pipes through a buckle.
In the embodiment of the utility model, the method for pumping, pouring and repairing the converter tap hole by using the equipment comprises the following steps:
the hot self-flowing performance of the castable is utilized, the castable is conveyed into the converter by a heat-insulating chute, poured into a small gap between the periphery of the casing brick and a large brick of a steel tapping hole, and sintered by the residual temperature of the lining brick of the converter; adding a liquid binder in the self-flowing process of the castable; the castable is a magnesia self-flow castable, the main raw materials are sintered magnesia and fused magnesia, explosion-proof fibers and a polycarboxylic acid high-efficiency dispersant are added, and silica micropowder, graphite or carbon black powder are compounded.
The magnesium self-flow castable comprises the following components in percentage by weight: MgO: 82% of SiO2: 10%, C: 5%, explosion-proof fiber: 0.1%, liquid binder: 2.9 percent.
The liquid bonding agent is prepared by preparing various magnesium basic inorganic salts according to a certain proportion and uniformly stirring and mixing.
The embodiment of the utility model provides an in, repair with magnesian pouring material that flows automatically uses sintering and electric smelting magnesite as the main part raw materials, add a small amount of explosion-proof fiber and polycarboxylic acid high efficiency dispersant, and adopt silica micropowder, graphite/charcoal black powder etc. carry out the complex, realize the high fever self-fluidity of material (liquid dosage is minimum under being not more than 5% the condition, 1min self-fluidity is not less than 230mm), make the material can be in the pipeline self-flowing under high temperature environment (1000 supplementarian food 1200 ℃), fully and closely knit the packing to the clearance.
The self-flowing material conveying system is mainly realized by a material conveying device, and the material conveying device mainly comprises a small short spiral stirrer, a high-pressure air pipe, a material conveying pipeline, a sealing valve, a tee joint and other structures; the material conveying pipeline mainly adopts two types of rubber material pipes and alloy material pipes, and the joints of the material pipes with different diameters are transited by metal reducing diameters.
The gravity flow material conveying device is hermetically connected with the feeding system and the pumping system through the material conveying pipeline.
The feeding system mainly comprises a forced stirring device, a metering device and a discharge pipeline, wherein the upper part of the forced stirring device is provided with a stirring barrel, the castable bulk cargo to be stirred can be placed in the stirring barrel in advance, and if stirring is needed, the liquid binder with the addition amount strictly controlled by the metering device enters the stirring barrel through a rubber pipeline and is fully mixed and stirred with the bulk cargo.
The heat preservation chute is mainly used for smoothly conveying a self-flowing castable to a part needing to be cast and repaired of a steel tapping hole in a furnace and preventing the self-flowing castable from being solidified and hardened in a pipeline under the action of high temperature of a furnace lining, and mainly comprises the following structures: in order to reduce the construction load, the inner layer structure is a stainless steel pipe with the thickness of 1mm and two semicircles are butted through a buckle, a layer of light heat-preservation refractory castable is poured on the outer layer of the stainless steel pipe, and the outer part of the castable is hermetically wrapped by an aluminum silicate fiber felt.
The vehicle body, namely the vehicle body bearing platform, has the functions of supporting and carrying various devices and is also connected with a traveling system, a direction control rod and the like.
The walking system mainly comprises a driving steering wheel, a driven wheel, a power transmission shaft, a supporting frame/plate, a motor speed reducer assembly and the like, the power transmission of a motor is utilized during moving, and a direction control rod is manually operated to adjust and control the moving direction
The castable is made of a magnesia self-flow castable, the main raw material is sintered and fused magnesia, a small amount of explosion-proof fiber and a polycarboxylic acid high-efficiency dispersant are added, and silica micropowder, graphite/carbon black powder and the like are compounded, and the main technical indexes of the material are as follows: MgO is more than or equal to 80 percent, SiO2 is less than or equal to 10 percent, C is less than or equal to 6 percent, explosion-proof fiber is 0.06 to 0.1 percent, the total amount of other additives is about 3 percent, and low-melting-point organic matters such as asphalt/resin and the like and low-melting-point inorganic salts such as sodium silicate, sodium phosphate and the like are not added.
As shown in fig. 2, in the embodiment of the present invention, the castable 11 itself has excellent thermal state self-flow performance, is conveyed to the inside of the converter through the heat preservation chute, and can be poured into the fine gap between the periphery of the casing brick 12 and the steel outlet brick 13 rapidly, uniformly and flatly, and then sintered by using the residual heat of the lining brick 14.
Those of ordinary skill in the art will understand that: the components in the device in the embodiments of the present invention may be distributed in the device in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The pumping, pouring and repairing equipment for the converter tap hole is characterized by comprising the following components:
the device comprises a carrying platform (1), wherein a support frame (2) is fixed on the carrying platform (1), and a storage device (3) is fixed on the support frame (2); the storage device (3) is connected with a feeding hole of the pumping device (5) through the material conveying device (4), and a discharging hole of the pumping device (5) is communicated with the heat-preservation chute (7) through a discharging pipe (6); the material conveying device (4) and the pumping device (5) are both fixed on the carrying platform (1); the material conveying device (4) is also communicated with a high-pressure air source through a high-pressure air pipe (8).
2. The converter tap hole pumping pouring repair apparatus according to claim 1, characterized in that: the carrying platform (1) is a carrying trolley and comprises a driving steering wheel, a driven wheel, a power transmission shaft, a vehicle body carrying platform (9), a support frame/plate, a motor speed reducer assembly and a direction control rod;
the motor speed reducer component comprises a power motor, and the power motor is connected with a speed reducer;
the speed reducer is connected with the driving steering wheel, the driving power transmission shaft is connected with the driven wheel, power transmission of the power motor is utilized during movement, and the direction control rod is manually operated to adjust and control the moving advancing direction of the driving steering wheel.
3. The converter tap hole pumping pouring repair apparatus according to claim 2, characterized in that: the material conveying device (4) comprises a short spiral stirrer, a high-pressure air pipe, a material conveying pipeline, a sealing valve and a three-way connecting pipe; the spiral stirrer is communicated with the storage device (3) through a material conveying pipeline (10), a discharge hole of the spiral stirrer is communicated with a first end of a three-way connecting pipe through a sealing valve, a second end of the three-way connecting pipe is communicated with a high-pressure air pipe (8) through the sealing valve, and a third end of the three-way connecting pipe is communicated with a feed inlet of a pumping device through the sealing valve.
4. The converter tap hole pumping pouring repair apparatus according to claim 3, characterized in that: the pumping device is a pumping machine.
5. The converter tap hole pumping pouring repair apparatus according to claim 4, characterized in that: and a discharge hole of the pumping machine is communicated with the heat-preservation chute through a discharge pipe.
6. The converter tap hole pumping pouring repair apparatus according to any one of claims 1 to 5, characterized in that: the heat-preservation chute comprises an inner-layer metal pipe, a layer of heat-preservation refractory material is poured on the outer side of the inner-layer metal pipe, and the outer layer of the heat-preservation refractory material is wrapped by an aluminum silicate fiber felt.
7. The converter tap hole pumping pouring repair apparatus according to claim 6, wherein: the inner layer metal pipe is formed by butt joint of two semicircular steel pipes through a buckle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922266978.3U CN211227208U (en) | 2019-12-17 | 2019-12-17 | Pumping pouring repair equipment for converter tapping hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922266978.3U CN211227208U (en) | 2019-12-17 | 2019-12-17 | Pumping pouring repair equipment for converter tapping hole |
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| CN211227208U true CN211227208U (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923391A (en) * | 2019-12-17 | 2020-03-27 | 北京联合荣大工程材料股份有限公司 | Pumping pouring repair equipment and method for converter tapping hole |
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2019
- 2019-12-17 CN CN201922266978.3U patent/CN211227208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923391A (en) * | 2019-12-17 | 2020-03-27 | 北京联合荣大工程材料股份有限公司 | Pumping pouring repair equipment and method for converter tapping hole |
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