CN219869121U

CN219869121U - Tap hole combined carbon brick device

Info

Publication number: CN219869121U
Application number: CN202321195237.0U
Authority: CN
Inventors: 于兆斌; 马元明; 孙全芹; 武天文; 张敏敏
Original assignee: Fangda Carbon New Material Co ltd
Current assignee: Fangda Carbon New Material Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-10-20
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to submerged arc furnace equipment, in particular to a tap hole combined carbon brick device. The iron notch is formed by arranging through holes along the axis of the carbon rod. The utility model adopts the combined carbon brick device at the tapping hole, the structural form can meet the requirement of the submerged arc furnace for intensified smelting, can maintain higher service life and has the advantages of good thermal shock resistance, corrosion resistance, scouring resistance, oxidation resistance and the like. The utility model has stable and novel structure and unique design, and greatly improves the production quality and the comprehensive performance of the submerged arc furnace while prolonging the service life of the submerged arc furnace.

Description

Tap hole combined carbon brick device

Technical Field

The utility model relates to submerged arc furnace equipment, in particular to a tap hole combined carbon brick device.

Background

The submerged arc furnace is smelting equipment. The submerged arc furnace iron notch is a very important structure in the submerged arc furnace, and is subjected to the influence of heat radiation and convection, and also subjected to abrasion of descending material flows, scouring of air flows, splashing of slag irons and corrosion of iron flows, and the submerged arc furnace iron notch is related to the service life, production quality and the like of the submerged arc furnace. The existing iron notch brick is easy to oxidize and break in the use process, and cannot meet the service life and quality requirements of an ore-smelting furnace. Meanwhile, when the existing equipment is overhauled under the condition that the iron notch brick is damaged, the furnace needs to be shut down for a long time for integral replacement, the replacement process is complex and time-consuming, the production is delayed by frequent disassembly, and the production efficiency is low.

Disclosure of Invention

The utility model aims to provide a tap hole combined carbon brick device which is novel and stable in structure, solves the problem of oxidization and fracture of tap hole carbon bricks of the existing submerged arc furnace, and greatly prolongs the service life of the submerged arc furnace.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a tap hole combination carbon brick device, includes inboard carbon brick, carbon rod and outside carbon brick, offers the through-hole on inboard carbon brick and the outside carbon brick, and the through-hole concatenation of inboard carbon brick and outside carbon brick constitutes the carbon rod passageway, and the carbon rod penetrates the carbon rod passageway combination and assembles into an organic wholely, and the carbon rod is offered the through-hole along the axle center and is formed the tap hole. The most serious of the exit end damage of the tap hole when the existing carbon brick is used, the exit end damage speed is obviously faster than that of the entrance end, the existing carbon brick is generally of a monolithic structure, and the monolithic structure is required to be disassembled during replacement. The utility model overcomes the defects of the prior art and designs the carbon brick into a combined structure; firstly, be convenient for quick installation of carbon brick, change and use, separate spare part damages simultaneously and can dismantle the change alone, especially like wearing parts such as carbon rod and outside carbon brick can be changed alone, greatly promotes and changes efficiency, reduces the time assurance production efficiency of blowing out. Secondly, the combined carbon brick structure facilitates the selection of carbon brick products with higher performance specifications for the outside carbon bricks, improves the protection strength of specific positions and effectively controls the production cost.

The inner side carbon brick is positioned at the feeding side of the carbon rod tapping hole, and the outer side carbon brick is positioned at the discharging side of the carbon rod tapping hole. The design of block combination and assembly is convenient to be independently disassembled and replaced according to the requirement.

The inner side carbon bricks and the outer side carbon bricks are cuboid. The thickness of the outer carbon brick is smaller than that of the inner carbon brick. The outside carbon brick is the apron form, and inside carbon brick has certain thickness installation embedding oven in more stable firm, and outside carbon brick covers in inside carbon brick outside, reduces wearing parts materials and the apron form structure is more quick detachable when the brick body damages simultaneously and needs to be changed.

The inner side carbon bricks and the outer side carbon bricks are made of ultra-microporous carbon bricks, and the carbon rods are made of high corrosion-resistant carbon bricks. Different structures are made of different materials, so that the production process requirements can be better met, and the production quality is improved.

And gaps among the inner carbon bricks, the carbon rods and the outer carbon bricks are filled with castable, and gaps among the inner carbon bricks, the outer carbon bricks and the submerged arc furnace wall are filled with castable. The integral sealing strength of the combined brick is improved.

The beneficial effects of the utility model are as follows: the utility model adopts the combined carbon brick device at the tapping hole, the structural form can meet the requirement of the submerged arc furnace for intensified smelting, and can maintain higher service life

Has the advantages of good thermal shock resistance, corrosion resistance, scouring resistance, oxidation resistance and the like. The utility model has stable and novel structure and unique design, and greatly improves the production quality and the comprehensive performance of the submerged arc furnace while prolonging the service life of the submerged arc furnace.

The device comprises inner and outer carbon bricks which have good thermal shock resistance and can be chilled and heated rapidly, wear-resistant and flushing-resistant carbon rods are arranged in holes drilled in the carbon bricks, a tap hole is arranged in the center of each carbon rod, and one end of each carbon rod is connected with the outer carbon bricks which are replaceable and have good oxidation resistance. The utility model has novel and stable structure, solves the problem of oxidization and fracture of the carbon brick at the tapping hole of the traditional submerged arc furnace, and greatly prolongs the service life of the submerged arc furnace.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a cross-sectional view of the structure of the present utility model.

Detailed Description

The utility model provides a tap hole combination carbon brick device, includes inboard carbon brick 1, carbon rod 2 and outside carbon brick 3, offers the through-hole on inboard carbon brick 1 and the outside carbon brick 3, and the through-hole concatenation of inboard carbon brick 1 and outside carbon brick 3 constitutes the carbon rod passageway, and carbon rod 2 penetrates carbon rod passageway combination and assembles into an organic wholely, and the through-hole is offered along the axle center to carbon rod 2 forms the tap hole.

The inner side carbon brick 1 is positioned at the feeding side of the tap hole of the carbon rod 2, and the outer side carbon brick 3 is positioned at the discharging side of the tap hole of the carbon rod 2. The inner side carbon bricks 1 and the outer side carbon bricks 3 are cuboid. The thickness of the outer carbon brick 3 is smaller than that of the inner carbon brick 1. The inner side carbon bricks 1 and the outer side carbon bricks 3 are made of ultra-microporous carbon bricks, and the carbon rods 2 are made of high corrosion-resistant carbon bricks. And gaps among the inner carbon bricks 1, the carbon rods 2 and the outer carbon bricks 3 are filled with castable, and gaps among the inner carbon bricks 1, the outer carbon bricks 3 and the submerged arc furnace wall are filled with castable.

The inner carbon brick 1 is a super-microporous carbon brick with the cross section of 400 x 400 mm or 800 x 800mm, the carbon rod 2 is processed by the high corrosion resistant carbon brick, and the outer carbon brick 3 is a super-microporous carbon brick with the cross section of 400 x 800mm and the length of 100-300 mm. The thickness of the outer carbon brick is smaller than that of the inner carbon brick. The outside carbon brick is the apron form, and inside carbon brick has certain thickness installation embedding oven in more stable firm, and outside carbon brick covers in inside carbon brick outside. The iron notch combined bricks are three combined bricks, and the pouring material fills gaps between the sleeve bricks and the combined bricks. And the castable is prepared by adopting a conventional high-temperature furnace castable for joint filling.

The ultra-microporous carbon brick and the high corrosion resistant carbon brick can be of the following types: the ultra-microporous carbon brick (FDG-20), which has a better microporous compact structure and molten iron erosion resistance, has a higher heat conductivity coefficient, can reduce the erosion speed of a blast furnace body, effectively prevent molten iron from penetrating and eroding, and prolong the service life of the blast furnace. The ultramicropore carbon brick can meet the requirement of using in large blast furnace hearth. The high corrosion resistant carbon brick (FDG-20T) has excellent molten iron corrosion resistance and oxidation resistance, has excellent heat conductivity coefficient, can reduce the corrosion speed of key parts of a blast furnace body, and effectively prevents molten iron infiltration corrosion.

When the furnace is used, the inner side carbon brick 1 is firstly installed to be embedded into the furnace wall, the carbon rod 2 penetrates into the inner side carbon brick 1, the gap between the sleeve brick and the combined brick is filled with casting material for the first time, the outer side carbon brick 3 is sleeved on the carbon rod 2, and the outer side carbon brick 3 is in a cover plate shape and covers one side of the inner side carbon brick 1.

The inner side carbon brick 1 is positioned at the feeding side of the tap hole of the carbon rod 2, the outer side carbon brick 3 is positioned at the discharging side of the tap hole of the carbon rod 2, and the pouring material is used for filling the gap between the sleeve brick and the combined brick for the second time to complete the whole installation. When the brick is disassembled, as shown in fig. 1, the iron outlet direction is right in and left out, the leftmost brick body is a wearing part, the combined technology innovation is that the iron mouth carbon brick combination with different performances is applied to a required position, and is easy to overhaul and replace, the service life can be prolonged in production practice, the brick body can be quickly tilted along the edge of the outer carbon brick 3 by using a conventional tool, after the outer carbon brick 3 is taken out, one end of the carbon rod 2 is exposed, the end of the carbon rod 2 can be disassembled by adopting a hanging screwing and pulling mode by grabbing the end of the carbon rod 2, finally, a conventional tool hook claw penetrates along the through hole of the inner carbon brick 1 and hooks out the inner carbon brick 1 to complete the disassembly of the whole combined brick body, and in practical use, if the inner carbon brick 1 is not seriously damaged, the inner carbon brick 1 can not be disassembled, and only the outer carbon brick 3 and the carbon rod 2 can be disassembled.

Claims

1. The utility model provides a tap hole combination carbon brick device, its characterized in that includes inboard carbon brick (1), carbon rod (2) and outside carbon brick (3), sets up the through-hole on inboard carbon brick (1) and outside carbon brick (3), and the through-hole concatenation of inboard carbon brick (1) and outside carbon brick (3) constitutes the carbon rod passageway, and carbon rod (2) penetrate carbon rod passageway combination and assemble into an organic whole, and the through-hole is seted up along the axle center to carbon rod (2) and is formed the tap hole.

2. A tap hole combined carbon brick device according to claim 1, characterised in that the inner carbon brick (1) is located on the feed side of the tap hole of the carbon rod (2) and the outer carbon brick (3) is located on the discharge side of the tap hole of the carbon rod (2).

3. A tap hole combined carbon brick device according to claim 1, characterised in that the inner carbon brick (1) and the outer carbon brick (3) are cuboid.

4. A tap hole combined carbon brick arrangement according to claim 3, characterised in that the thickness of the outer carbon brick (3) is smaller than the thickness of the inner carbon brick (1).

5. The tap hole combined carbon brick device according to claim 1, wherein the inner carbon brick (1) and the outer carbon brick (3) are made of ultra-microporous carbon bricks, and the carbon rod (2) is made of high corrosion-resistant carbon bricks.

6. The tap hole combined carbon brick device according to claim 1, wherein gaps among the inner carbon brick (1), the carbon rod (2) and the outer carbon brick (3) are filled with castable, and gaps among the inner carbon brick (1) and the outer carbon brick (3) and the submerged arc furnace wall are filled with castable.