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A water-cooling device for the main ditch of a blast furnace tapping ditch and its installation and use method

A blast furnace tapping and water-cooling technology, applied in cooling devices, discharge devices, etc., can solve the problems of gas, mechanical damage, time-consuming and energy-consuming maintenance of large trenches, and high labor intensity of workers, achieving high safety, simple structure, The effect of improving the service life

Active Publication Date: 2019-04-05
南京联合荣大工程材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is still a very time-consuming and energy-consuming task to maintain the big trench every time, especially the labor intensity of the workers in front of the furnace is still very high, and they are faced with risks such as high temperature, dust, noise, gas, and mechanical damage.

Method used

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  • A water-cooling device for the main ditch of a blast furnace tapping ditch and its installation and use method
  • A water-cooling device for the main ditch of a blast furnace tapping ditch and its installation and use method
  • A water-cooling device for the main ditch of a blast furnace tapping ditch and its installation and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: as figure 1 , figure 2 , image 3 and Figure 4 As shown, a water-cooling device for the main channel of a blast furnace tapping channel, the cooler body 8 contains a cooler cavity 1, the top of the cooler cavity 1 is connected to the sealing plate 2, the sealing plate 2 can be opened, and the metal ceramic 3 is filled in the metal back Between the plate 5 and the shell of the cooler body 8, the cooling water pipe 4 is connected in the cermet 3, the cooling water pipe 4 has a water pipe inlet section 6, and the water pipe inlet section 6 protrudes from the metal back plate 5 and is located in the cooler cavity In 1, the skimmer beam 9 and the cooler body 8 are respectively located in the iron ditch castable 12, and there is a slag-iron mixture 11 in the large ditch surrounded by the iron ditch castable 12, and the lower part of the iron ditch castable 12 is connected with iron Ditch material or pre-cast iron ditch permanent layer 14, main ditch steel s...

Embodiment 2

[0036] Embodiment 2: A method for installing and using water-cooled devices in the main ditch of a blast furnace tapping ditch; it includes the steps of making the cooler, installing it, and pouring it,

[0037] Cooler manufacturing steps: first use metal seamless pipes as cooling water pipes 4, process them into circular rotary devices by filling sand with hot bending, and then fix the bent metal seamless pipes to the cavity made of steel plates On the surface of the structure, metal ceramics are used to cast the protective layer of metal seamless pipes by casting;

[0038] The structure of the main ditch water cooler is completed. After the cermet is solidified, it will be dried at a temperature above 500°C, and the free water in the cermet will be removed before being transported to the site for installation;

[0039] Installation steps: Remove the materials in the original iron ditch during installation, then fix the cooler in the ditch, and install the inner mold for iron...

Embodiment 3

[0046] Embodiment 3: as figure 1 , figure 2 , image 3 As shown in Fig. 1, a water-cooling device for the main channel of a blast furnace tapping channel, its core is designed with a cavity structure, a seamless metal tube bending pipeline, and a protective layer made of cermets is attached to the metal pipeline.

[0047] The thickness of a single stave of the cooler is 400-600mm, the height is 600-1200mm, and the length is 1000-2000mm. The actual size is related to the size of the big ditch and the size of the blast furnace.

[0048] The seamless pipe used in the cooler is a 1-3 inch seamless pipe, which is bent by a hot bending process to form a rotary channel.

[0049] The cermet material covering the metal seamless pipe is composed of alumina particles and fine powder, corundum particles and fine powder, binder, steel fiber, and mixed into the mold by mechanical stirring.

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Abstract

The invention belongs to the technical field of blast furnace tapping, and relates to a main channel water-cooling device of a blast furnace tapping channel and a mounting and utilizing method. The main channel water-cooling device is composed of a cooler body, a metal seamless pipe, metal ceramic and a steel plate. The metal seamless pipe serves as a cooling water pipeline for cooling liquid circulation heat exchange. The metal ceramic serves as a middle heat conductor and seamless pipe protection layer. A hollow cavity is formed in the back face through the steel plate and used for pipeline distribution, and a relatively open space is formed. The main channel water-cooling device is simple in structure and high in safety, and the service life of the blast furnace tapping channel can be effectively prolonged. In the ideal state, the one-time iron flux of the existing blast furnace tapping channel can be increased by many times, or the service life under the same working condition is greatly prolonged.

Description

technical field [0001] The invention relates to a water-cooling device for a main ditch of a blast furnace tapping ditch and a method for installing and using it, and belongs to the technical field of blast furnace iron storage. Background technique [0002] Blast furnace iron chute is an essential facility in the blast furnace ironmaking process. Its main function is to buffer the slag and iron ejected from the tap hole and realize the separation of slag and iron. Finally, the separated slag and iron are transported to the ladle and flushing Slag granulation facility. Whether it is a large blast furnace such as 4500m 3 Still a small 450m 3 The basic function of the blast furnace has not changed. Its structural material system has gone through the ramming material dry ditch to the pouring material dry ditch to the current mainstream pouring iron storage ditch. The life expectancy has been extended from the original 1 to 2 weeks to the current 1 to 3 months. [0003] How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/14C21B7/10
CPCC21B7/10C21B7/14
Inventor 司翔
Owner 南京联合荣大工程材料有限责任公司
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