CN208378916U - A kind of compound iron runner lining - Google Patents

Abstract

The utility model discloses a kind of compound iron runner lining, including bottom of trench, left furrow bank and right furrow bank；Molten iron channel groove is formed between the bottom of trench, the left furrow bank and the right furrow bank, molten iron channel groove cross section is the isosceles trapezoid of falling that upper bottom edge length is greater than bottom edge lengths；The left furrow bank and the right furrow bank are from top to bottom followed successively by corundum silicon nitride and silicon carbide carbon exit or entrance of a clitch layer, fused alumina zirconia silicon nitride and silicon carbide carbon slag line layer and corundum silicon nitride and silicon carbide carbon molten bath layer.Cost is relatively low for the utility model compound iron runner lining, last a long time, corrosion rate consistency is good.

Description

A kind of compound iron runner lining

Technical field

The utility model relates to the resistance to material technical field of blast furnace ironmaking, in particular to a kind of compound iron tap channel working lining.

Background technique

Steel and iron industry is that the basic production in China is that great basic supporting role is played in national economy.Steel at present Iron is produced the overwhelming majority and is produced using long flow model, that is, uses blast furnace-converter-essence furnace-continuous casting -- steel rolling heat-treatment furnace (or it is cold Roll) mode.Coming out of the stove is an important ring for blast fumance.Ditch working lining of coming out of the stove plays an important role in tapping.

In actual use, be easy to damage position is at slag line, followed by molten bath to iron hook working lining.Working lining construction shape Formula has brick, ramming mass, prefabricated component, castable (including gravity flow pouring material) etc..Integrated poured integrally formed iron is mostly used at present Ditch lining.This lining has many advantages, such as that quick construction facilitates, saves labor, good integrity, lasting a long time.Monolithic castable casting lining Corresponding higher cost, service life also need to improve, my iron and steel output was seriously superfluous in recent years, was carrying out supply side reform, steel row Industry cost pressure is very big.

Utility model content

For this purpose, the technical problem to be solved by the utility model is to provide one kind, cost is relatively low, last a long time, corrodes speed Spend the good blast furnace iron outlet groove working lining of consistency.

In order to solve the above technical problems, the utility model provides the following technical solutions:

A kind of compound iron runner lining, including bottom of trench, left furrow bank and right furrow bank；The bottom of trench, the left furrow bank and the right ditch Molten iron channel groove is formed between wall, molten iron channel groove cross section is that upper bottom edge length is greater than falling for bottom edge lengths etc. Waist is trapezoidal；The left furrow bank and the right furrow bank are from top to bottom followed successively by AL₂O₃-Si₃N₄(i.e. corundum nitrogenizes the exit or entrance of a clitch-SiC-C layer SiGeC silicon-carbon exit or entrance of a clitch layer), fused alumina zirconia silicon carbide carbon slag line layer (i.e. fused alumina zirconia silicon nitride and silicon carbide carbon slag line layer) and AL₂O₃- Si₃N₄- SiC-C molten bath layer (i.e. corundum silicon nitride and silicon carbide carbon molten bath layer).

Above-mentioned compound iron runner lining, the ZrO₂-AL₂O₃-Si₃N₄The height H1 of-SiC-C slag line layer is the isosceles trapezoid 0.20-0.25 times of height；The ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer average thickness D1 is the ZrO₂-AL₂O₃- Si₃N₄0.5-0.75 times of the molten iron channel groove average transverse width D 2 corresponding to-SiC-C slag line layer.

The utility model achieves following beneficial technical effect:

1, damage serious position in iron tap channel and introduce fused alumina zirconia, the strength of materials is high, it is resistance to wash away, anti-erosion, anti-strip, Greatly improve the ditch lining service life.

2, fused alumina zirconia used in slag lining can handle to obtain using the resistance to material waste recovery of glass kiln lining, and cost is relatively low, together When preferably handled the resistance to material of cullet kiln lining, be allowed to turn waste into wealth.

3, the exit or entrance of a clitch, molten bath lining also widely apply the waste resistant materials such as useless electrolysis slot liner, and waste utilization is environmentally protective, has both dropped out Iron runner cost, and to environmental benefits, furthermore corrosion resistance and inoxidizability can be improved in silicon nitride comprising, to improve the service life.

4, by the corrosion resistance of fused alumina zirconia, fused alumina zirconia slag line layer height and thickness, the corresponding molten iron of fused alumina zirconia slag line layer Channel groove width, molten iron channel groove height combine, and realize exit or entrance of a clitch layer, fused alumina zirconia slag line layer and molten bath The corrosion of layer is synchronous, the amount ratio of the scrap iron ditch lining generated when not only increasing service life, and replace iron runner working lining It is less.

Detailed description of the invention

The structural schematic diagram of the compound iron runner lining of Fig. 1 the utility model.

Appended drawing reference indicates in figure are as follows: 100- bottom of trench；The left furrow bank of 200-；The right furrow bank of 300-；400- molten iron channel groove；1- AL₂O₃-Si₃N₄The exit or entrance of a clitch-SiC-C layer；2-ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer；3-AL₂O₃-Si₃N₄- SiC-C molten bath layer.

Specific embodiment

Embodiment 1

As shown in Figure 1, the compound iron runner lining bag of the present embodiment includes bottom of trench 100, left furrow bank 200 and right furrow bank 300；The bottom of trench 100, molten iron channel groove 400 is formed between the left furrow bank 200 and the right furrow bank 300, the molten iron channel groove 400 is horizontal Section is the isosceles trapezoid of falling that upper bottom edge length is greater than bottom edge lengths；The left furrow bank 200 and the right furrow bank 300 by up to Under be followed successively by AL₂O₃-Si₃N₄The exit or entrance of a clitch-SiC-C layer 1 (i.e. corundum silicon nitride and silicon carbide carbon exit or entrance of a clitch layer), ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer 2 (i.e. fused alumina zirconia silicon nitride and silicon carbide carbon slag line layer) and AL₂O₃-Si₃N₄(the i.e. corundum nitrogen of-SiC-C molten bath layer 3 SiClx silicon carbide carbon molten bath layer).The AL₂O₃-Si₃N₄The exit or entrance of a clitch-the SiC-C 1 and AL of layer₂O₃-Si₃N₄- SiC-C molten bath layer 3 is equal For the electrolytic cell lining reclaimed materials that gives up, while primary silicon nitride, silicon carbide and graphite is added.The ZrO₂-AL₂O₃-Si₃N₄-SiC-C The height H1 of slag line layer 2 is 0.20 times of the height of falling isosceles trapezoid；The ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer 2 is flat Equal thickness D1 is the ZrO₂-AL₂O₃-Si₃N₄400 average transverse of molten iron channel groove corresponding to-SiC-C slag line layer 2 0.75 times of width D 2.It makes when the compound iron runner of the present embodiment serves as a contrast and is constructed using Self-leveling, the feelings for being 1550 DEG C in tapping temperature , it can be achieved that crossing 180,000 tons of iron or more, and the exit or entrance of a clitch layer 1, ZrO under condition₂-AL₂O₃-Si₃N₄- SiC-C slag line layer 2 and AL₂O₃- Si₃N₄The damage of 3 Integral synchronous of-SiC-C molten bath layer.

Embodiment 2

The present embodiment the difference from embodiment 1 is that: the ZrO₂-AL₂O₃-Si₃N₄The height H1 of-SiC-C slag line layer 2 is 0.25 times of the height of falling isosceles trapezoid；The ZrO₂-AL₂O₃-Si₃N₄2 average thickness D1 of-SiC-C slag line layer is described ZrO₂-AL₂O₃-Si₃N₄0.6 times of the 400 average transverse width D 2 of molten iron channel groove corresponding to-SiC-C slag line layer 2. AL₂O₃-Si₃N₄The exit or entrance of a clitch-SiC-C layer 1, ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer 2 and AL₂O₃-Si₃N₄- SiC-C molten bath layer 3 Damage synchronizes.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among still in present patent application scope of protection of the claims.

Claims (2)

1. a kind of compound iron runner lining, which is characterized in that including bottom of trench (100), left furrow bank (200) and right furrow bank (300)；The ditch Molten iron channel groove (400) are formed between bottom (100), the left furrow bank (200) and the right furrow bank (300), the molten iron is logical Groove (400) cross section in road is the isosceles trapezoid of falling that upper bottom edge length is greater than bottom edge lengths；The left furrow bank (200) and described Right furrow bank (300) is from top to bottom followed successively by AL₂O₃-Si₃N₄The exit or entrance of a clitch-SiC-C layer (1), ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer (2) and AL₂O₃-Si₃N₄- SiC-C molten bath layer (3).

2. compound iron runner lining according to claim 1, which is characterized in that the ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer (2) height H1 is 0.20-0.25 times of the height of falling isosceles trapezoid；The ZrO₂-AL₂O₃-Si₃N₄- SiC-C slag line layer (2) average thickness D1 is the ZrO₂-AL₂O₃-Si₃N₄The molten iron channel groove (400) corresponding to-SiC-C slag line layer (2) 0.5-0.75 times of average transverse width D 2.