CN212316154U

CN212316154U - Blast furnace iron runner

Info

Publication number: CN212316154U
Application number: CN202020604385.3U
Authority: CN
Inventors: 牛顺伟; 张玉民; 王玉伟; 卢利子
Original assignee: Yima Baoyi New Material Co ltd
Current assignee: Yima Baoyi New Material Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-01-08
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a blast furnace tapping runner, including outer steel casing, be equipped with permanent brick lining in the outer steel casing, there is clearance formation cooling channel between permanent brick lining and the thermal-insulated heat preservation, cooling channel one side lower part is equipped with the inlet tube, opposite side upper portion is equipped with the drain pipe, permanent brick lining outer wall is equipped with a plurality of radiating fin, the inner wall is equipped with the pouring material layer, pouring material layer inner wall is equipped with iron runner working layer, iron runner working layer top is equipped with the sediment indisputable runner, be equipped with the protecting brick layer on the sediment indisputable runner, the upper portion of pouring material layer both sides all sets up towards the outer steel casing place incline of neighbouring and forms oblique section, the inboard bottom of oblique section and top all are equipped with the platform, all laid the steel backplate on the inclined plane between two platforms and the two platforms, erect the apron between the steel. The utility model has strong slag and iron corrosion resistance, good cooling effect and speed, can effectively avoid the leakage of high-temperature dust and harmful gas, can greatly improve the service life of the iron tap channel, and ensures the stable and ordered production of the blast furnace.

Description

Blast furnace iron runner

Technical Field

The utility model belongs to the technical field of blast furnace tapping production, concretely relates to blast furnace tapping runner.

Background

The blast furnace tapping channel is an important facility in front of a blast furnace, and mainly has the functions of buffering iron slag sprayed out of a blast furnace tapping hole, realizing iron slag separation and further conveying the iron slag to a ladle and a slag flushing granulation facility respectively. In actual production, the working environment of the tapping runner is extremely severe, such as frequent scouring and erosion of high-temperature molten iron and slag, severe thermal shock effect of intermittent tapping, corrosion effect of high-temperature flue gas and the like. However, the structure of the existing iron runner is simple, particularly, the working layer is extremely easy to be affected to cause abrasion and thinning, meanwhile, the iron runner is in a high-temperature working environment and needs to be cooled in time, the existing cooling mode adopts natural cooling or air cooling, the effect and the efficiency are low, the iron runner is easily damaged, the service life of the iron runner is greatly shortened, and the normal and ordered production of a blast furnace is not facilitated. In addition, current iron notch is mostly open structure, and the high temperature harmful gas and the dust that the during operation produced are scattered all around, can produce great adverse effect to production environment and staff's healthy on every side, remain to improve.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a blast furnace tapping channel that slag and iron erosion resistance is strong, cooling effect and speed are good and can effectively avoid high temperature dust and harmful gas to leak improves the life of tapping channel, guarantees the stable orderly production of blast furnace to solve above-mentioned problem.

In order to achieve the above object, the utility model adopts the following technical scheme: a blast furnace iron runner comprises a U-shaped outer steel shell, wherein a heat insulation layer is arranged on the inner wall of the outer steel shell, a plurality of support columns are arranged at intervals along the length direction at two ends of the heat insulation layer at the bottom of the outer steel shell, a U-shaped permanent brick lining layer is erected on the support columns, a gap is formed between the permanent brick lining layer and the heat insulation layer to form a cooling channel, the lower part of one side of the cooling channel is communicated with a water inlet pipe, the upper part of one side, opposite to the water inlet pipe, of the cooling channel is communicated with a water outlet pipe, a cooling water tank is arranged outside the outer steel shell, the water inlet pipe is connected with a water outlet of the cooling water tank, a plurality of radiating fins are arranged at intervals on the outer wall of the permanent brick lining layer, a U-shaped pouring material layer is arranged on the inner wall of the pouring material layer, a square iron runner working layer is, the utility model discloses a slag iron runner, including the slag iron runner, be equipped with the protection brick layer on the slag iron runner, the upper portion of casting bed both sides all sets up towards the adjacent outer steel casing place side slope and forms oblique section, the inboard bottom and the top of oblique section all are equipped with the platform, all laid the steel backplate on the inclined plane between two platforms and two platforms, erect the apron between the steel backplate on two oblique sections.

Preferably, the heat insulation layer is made of heat insulation materials, the permanent brick lining layer is built by high-alumina silicon carbide bricks, the pouring material layer is made by corundum silicon carbide, the iron runner working layer is built by carbon bricks, and the protection brick layer is built by high-alumina bricks.

Preferably, the top of the cooling channel is plugged by a refractory castable.

Preferably, the water inlet pipe is provided with a water inlet valve and a water inlet pump, and the water outlet pipe is provided with a drainage pump.

Preferably, the upper parts of both sides of the permanent brick lining layer are obliquely arranged towards the side where the adjacent outer steel shell is positioned, and the inclination angle of the permanent brick lining layer is matched with the inclined section of the castable layer.

Preferably, the bottom of the inclined section of the castable layer is higher than the top of the working layer of the iron runner.

Preferably, the cross section of the cover plate is an inverted isosceles trapezoid, the bottoms of the two sides of the cover plate are lapped on the steel guard plate of the bottom platform of the corresponding inclined section, the waist of the cover plate is matched with the inclined plane between the two platforms and is lapped on the steel guard plate on the corresponding inclined plane, flanges are arranged at the tops of the two sides of the cover plate, and the flanges are lapped on the steel guard plate of the top platform of the corresponding inclined section.

Preferably, the upper surface of the cover plate is provided with a hanging ring.

The utility model has the advantages that: the utility model relates to a rationally, moreover, the steam generator is simple in structure, the protection brick layer that adopts the high-alumina brick to build by laying bricks or stones on the indisputable ditch uses the initial stage to protect the iron runner working layer at the iron runner, avoid iron runner working layer direct contact iron to erode, the iron runner working layer that cooperation carbon brick was built by laying bricks or stones, the castable layer that corundum carborundum was made and the permanent brick lining that high-alumina carborundum was built by laying bricks or stones, can strengthen the anti sediment of iron runner greatly, the ability of iron erosion, improve the working quality and the life of iron runner, thereby guarantee the normal orderly production of blast furnace, improve enterprise economic benefits.

The cooling water forced circulation that has adopted radiating fin and water-cooling method, cooling efficiency is higher, the effect is better, and during the water-cooling, through advancing, drain pump and coolant tank's cooperation, can realize that the lower part is intake, the cooling water forced circulation of upper portion drainage flows, when guaranteeing that water pressure is sufficient, can make the cooling water evenly spread in cooling channel again, strengthen the cooling effect greatly, improve iron notch life, the while cooling water can also cyclic utilization, the water resource is not wasted, reduction in production cost.

The cover plate can prevent high-temperature dust and harmful gas generated during the operation of the iron runner from leaking, and is beneficial to maintaining the quality of the surrounding environment and the health of workers; the apron has adopted wide isosceles trapezoid structure narrow down in the top, the ability of automatic centering location has, it is more convenient to install, and can reduce the gap of apron and overlap joint, the closure is better, and the overlap joint has adopted the inclined plane structure of upper and lower two platforms and looks adaptation, including the steel backplate, can improve the structure steadiness of overlap joint greatly, can effectively avoid the overlap joint to sink, prevent that the apron from appearing slope rake angle scheduling problem, guarantee the apron to the sealed of iron runner, improve the life of apron.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numbers in the figures: the heat-insulating and heat-preserving combined type steel wall comprises an outer steel shell 1, a heat-insulating layer 2, a cooling channel 3, heat-radiating fins 4, a permanent brick lining layer 5, a water inlet pipe 6, a water inlet valve 7, a water inlet pump 8, a cooling water tank 9, a support column 10, a drain pipe 11, a drain pump 12, a casting material layer 13, an iron runner working layer 14, a protective brick layer 15, a slag iron runner 16, a refractory casting material 17, an inclined section 18, a platform 19, a steel protective plate 20, a cover plate 21 and a hanging ring 22.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

as shown in FIG. 1, a blast furnace tapping runner comprises a U-shaped outer steel shell 1 for the outer protection of the tapping runner. Be equipped with thermal-insulated heat preservation 2 on the inner wall of outer box hat 1 for play thermal-insulated heat preservation effect, avoid outer box hat 1 high temperature and cause damage or scald staff's the condition emergence, guarantee safety in production. The heat insulation layer 2 can be made of conventional heat insulation materials such as heat insulation cotton. The two ends of the heat insulation layer 2 at the bottom of the outer steel shell 1 are provided with a plurality of supporting columns 10 at intervals along the length direction, U-shaped permanent brick linings 5 are erected on the supporting columns 10 and built by high-alumina silicon carbide bricks, so that the steel shell has high refractoriness, high-temperature strength, thermal shock resistance and good heat conductivity, good temperature gradient is formed, and the use quality of the tapping channel is improved.

A gap exists between the permanent brick lining 5 and the heat insulation layer 2 to form a cooling channel 3 for matching with water cooling. The lower part of one side of the cooling channel 3 is communicated with a water inlet pipe 6, the water inlet pipe 6 is provided with a water inlet valve 7 and a water inlet pump 8, the upper part of one side of the cooling channel 3 opposite to the water inlet pipe 6 is communicated with a water outlet pipe 11, the water outlet pipe 11 is provided with a water discharge pump 12, the outside of the outer steel shell 1 is provided with a cooling water tank 9, the water inlet pipe 6 is connected with a water outlet of the cooling water tank 9, the water outlet pipe 11 is connected with a water inlet of the cooling water tank 9, and the outer wall of the permanent brick lining 5 is provided with a plurality of heat radiation fins 4 at intervals, so that a double heat radiation cooling mode of the heat radiation fins 4 and water cooling is formed, the cooling efficiency is higher, the effect is better, and when water cooling is carried out, the forced circulation flow of the cooling water of the lower part water inlet and the upper part water discharge can, the service life of the iron tap channel is prolonged, and meanwhile, cooling water can be recycled, so that water resources are not wasted, and the production cost is reduced. The cooling water tank 9 can adopt a conventional integrated cooling water tank in the prior art, is an existing advanced circulating water cooling device, is widely suitable for matching with other electrical appliances and mechanical equipment which need circulating water cooling, and the like, is internally integrated with parts such as a water circulation radiator, a cooling fan, a water path circulation system, a water level indicating device and the like, can realize cooling operation of cooling water on the equipment and backflow recycling of the cooling water by matching with a circulating water pump during use, is convenient to use, and does not waste water resources.

The inner wall of the permanent brick lining layer 5 is provided with a U-shaped castable layer 13 which is made of corundum silicon carbide refractory material, so that the permanent brick lining layer is high temperature resistant and high in strength, and can effectively prevent the working layer 14 of the iron runner from cracking and molten iron from leaking, and ensure the normal and stable work of the iron runner. The inner wall of the casting material layer 13 is provided with a square iron runner working layer 14 which is built by carbon bricks, the heat stability is good, the erosion of molten metal and various molten slag can be resisted, the top of the iron runner working layer 14 which can be used as an iron storage type molten iron and slag channel is provided with an iron slag runner 16, the iron slag runner 16 is provided with a protective brick layer 15 which is built by high-alumina bricks, the refractoriness and the slag resistance are high, the iron runner working layer 14 can be protected in the initial stage of the use of the iron runner, the direct contact between the iron slag and the erosion of the iron slag working layer 14 is avoided, the iron runner working layer 14 built by carbon bricks, the casting material layer 13 made of corundum silicon carbide and the permanent brick lining layer 5 built by high-alumina silicon carbide are matched, the slag and iron erosion resistance of the iron runner can be greatly enhanced, the working quality and the service life of the iron runner are improved, the normal and ordered production of a blast furnace is ensured, and the economic.

In this embodiment, the upper portions of both sides of the castable layer 13 are both obliquely arranged towards the side where the adjacent outer steel shell 1 is located to form an oblique section 18, the bottom and the top of the inner side of the oblique section 18 are both provided with a platform 19, steel guard plates 20 are laid on the two platforms 19 and the inclined plane between the two platforms 19, and the steel guard plates 20 can be integrally formed. A cover plate 21 is erected between the steel guard plates 20 on the two inclined sections 18, the cross section of the cover plate 21 is in an inverted isosceles trapezoid shape, the bottoms of the two sides of the cover plate 21 are lapped on the steel guard plates 20 of the bottom platforms 19 of the corresponding inclined sections 18, the waist of the cover plate 21 is matched with the inclined planes between the two platforms 19 and lapped on the steel guard plates 20 on the corresponding inclined planes, flanges are arranged at the tops of the two sides of the cover plate 21, and the flanges are lapped on the steel guard plates 20 of the top platforms 19 of the corresponding inclined sections 18. By arranging the cover plate 21, high-temperature dust and harmful gas generated during the operation of the iron runner can be prevented from leaking, and the quality of the surrounding environment and the health of workers are favorably maintained; apron 21 has adopted wide isosceles trapezoid structure narrow down in the top, the ability of automatic centering location has, it is more convenient to install, and can reduce the gap of apron 21 with the overlap joint, the closure is better, and the overlap joint has adopted the inclined plane structure of upper and lower two platforms 19 and looks adaptation, in addition steel backplate 20, can improve the structure steadiness of overlap joint greatly, can effectively avoid the overlap joint to sink, prevent that apron 21 from appearing the slope rake scheduling problem, guarantee the apron 21 to the sealed of iron runner, improve apron 21's life. The upper surface of the cover plate 21 is provided with a hanging ring 22, which is convenient for taking and placing the cover plate 21.

In the present embodiment, the top of the cooling channel 3 is sealed by a refractory castable material, so as to ensure the sealing performance of the cooling channel.

In this embodiment, the upper parts of both sides of the permanent brick lining 5 are inclined towards the adjacent side of the outer steel shell 1, and the inclination angle of the upper parts is matched with the inclined section 18 of the castable layer 13, so as to ensure the uniformity and stability of the whole structure. The bottom of the inclined section 18 of the castable layer 13 is higher than the top of the working layer 14 of the iron runner, so as to ensure that the bottom of the cover plate 21 is higher than the top of the working layer 14 of the iron runner, and the normal work of the iron runner is not influenced.

The utility model discloses a theory of operation: the utility model discloses when using, utilize the indisputable runner 16 of sediment to separate and transport blast furnace exhaust sediment iron, the ability of anti sediment of iron attack can be strengthened greatly to the mutually supporting between each layer of tapping runner, improves the operating mass with rated load and the life of tapping runner to guarantee the normal orderly production of blast furnace, improve enterprise economic benefits. In the working process of the iron runner, the cover plate 21 seals the top of the iron runner, so that high-temperature dust and harmful gas generated in the working process of the iron runner can be prevented from leaking, and the quality of the surrounding environment and the physical health of workers are favorably maintained. When the iron runner works, the heat dissipation fins can dissipate heat effectively, the water inlet valve 7 is opened at the same time, the water inlet pump 8 and the water discharge pump 12 are started, the cooling water in the cooling water tank 9 can be pumped out by the water inlet pump 8, so that the cooling water can enter the cooling channel 3 through the water inlet pipe 6 for water cooling, and can return to the cooling water tank 9 again through the water discharge pipe 11 under the action of the water discharge pump 12, thereby forming a double heat dissipation cooling mode of the heat dissipation fins 4 and the water cooling, the cooling efficiency is higher, the effect is better, in addition, in the water cooling process, the forced circulation flow of the cooling water of the lower water inlet part and the upper water discharge part can be realized through the matching of the water inlet pump 8, the water discharge pump 12 and the cooling water tank 9, the cooling water can be uniformly dispersed in the cooling channel 3 while the enough water pressure is ensured, the cooling effect is greatly enhanced, the service, the production cost is reduced.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A blast furnace iron runner is characterized by comprising a U-shaped outer steel shell, wherein a heat insulation layer is arranged on the inner wall of the outer steel shell, a plurality of support columns are arranged at intervals along the length direction at two ends of the heat insulation layer at the bottom of the outer steel shell, a U-shaped permanent brick lining layer is erected on the support columns, a gap is formed between the permanent brick lining layer and the heat insulation layer to form a cooling channel, the lower part of one side of the cooling channel is communicated with a water inlet pipe, the upper part of one side, opposite to the water inlet pipe, of the cooling channel is communicated with a water outlet pipe, a cooling water tank is arranged outside the outer steel shell, the water inlet pipe is connected with a water outlet of the cooling water tank, the water outlet pipe is connected with a water inlet of the cooling water tank, a plurality of radiating fins are arranged at intervals on the outer wall of the permanent brick lining layer, the top on iron runner working layer has been seted up the sediment iron runner, be equipped with the protection brick layer on the sediment iron runner, the upper portion of casting bed both sides all sets up towards the adjacent outer steel casing place side slope and forms oblique section, the inboard bottom of oblique section and top all are equipped with the platform, the steel backplate has all been laid on the inclined plane between two platforms and two platforms, erect the apron between the steel backplate on two oblique sections.

2. The blast furnace runner of claim 1 wherein the insulating layer is made of insulating material, the permanent brick lining layer is made of high alumina silicon carbide bricks, the castable layer is made of corundum silicon carbide, the runner working layer is made of carbon bricks, and the protective brick layer is made of high alumina bricks.

3. The blast furnace tapping channel according to claim 1, wherein the top of the cooling channel is blocked by a refractory castable material.

4. The blast furnace tapping runner of claim 1 wherein the inlet pipe is provided with a water inlet valve and a water inlet pump, and the drain pipe is provided with a drain pump.

5. The blast furnace tapping runner according to claim 1, wherein the permanent brick lining is inclined at an angle at both sides towards the adjacent outer steel shell side, the angle of inclination being adapted to the angle of inclination of the castable layer.

6. The blast furnace tapping runner according to claim 1, wherein the bottom of the sloping portion of the castable layer is higher than the top of the working layer of the runner.

7. The blast furnace tapping runner according to claim 1, wherein the cross-section of the cover plate is an inverted isosceles trapezoid, the bottoms of both sides of the cover plate are lapped on the steel guard plate of the bottom platform of the corresponding inclined section, the waist of the cover plate is matched with the inclined plane between the two platforms and is lapped on the steel guard plate on the corresponding inclined plane, and the tops of both sides of the cover plate are provided with flanges which are lapped on the steel guard plate of the top platform of the corresponding inclined section.

8. The blast furnace tapping runner of claim 7 wherein the cover plate has a lifting ring on an upper surface thereof.