Henan Changxing Refractory Material Co.,Ltd.
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Tap Hole Brick Introduction:
Taphole brick is made of high purity fused magnesia and large crystal magnesia, mixed with high purity flake graphite and added with special antioxidant and resin binders,usually shaped by cold isostatic presses. The Tap Hole Brick of converter is one of the most important technical indexes of steel melting, which directly affects the melting period, productivity and slag retaining,therefore affects the quality of steel.Our whole Tap Hole Brick achieve multiple people laying the furnace, improve the speed of laying, shorten the whole laying time, the Tap Hole Brick repair material reduced, and reduce the steel flow to improve the quality of molten steel, reduce the steel process temperature drop, enhance the Tap Hole Brick erosion resistance and mechanical erosion resistance.
Tap Hole Brick Advantages:
1.Tap hole brick is characterized by good oxidation resistance
2.high strength, good corrosion resistance
3.good integrity, easy replacing and long life
4.Tap hole brick is ideal material taphole of large and medium furnace
Tap Hole Brick Influence：
The taphole life is one of the important indicators of the converter sliding plate slag blocking technology. The taphole is easily damaged due to frequent direct erosion and violent erosion of high-temperature molten steel and high-oxidizing slag, combined with the effects of rapid cold and heat. The length of its life directly affects the converter smelting cycle, steelmaking productivity and slag retaining effect, which in turn affects the quality of steel. The integrity of the tap hole directly controls the amount of slag in the converter, and has a direct impact on the alloy yield and the next refining process.
Measures to improve the application of refractory materials:
1. Improve and optimize the material and structure of the skateboard to greatly increase the service life
2. Measures to improve the overall life of the taphole port during the converter tapping process
1 Standards for the use of tapping holes
1.1 It should be ensured that the shape of the tap hole is normal and can meet the requirements of the slag retaining process, and the tap hole should be at an angle of 0° to the horizontal. The tap hole is round.
1.2 The maximum diameter of the tap hole is not allowed to exceed 150 mm, and the shortest is not less than 400 mm. The tapping time is not less than 1 minute and 30 seconds. Otherwise, install a new tapping hole.
2 Maintenance operations of the tapping hole
2.1 When lowering the tap hole, use a reaming machine to remove the remaining bricks and residues in the tap hole. If there is residual steel, it must be blown away with an oxygen pipe.
2.2 Put the prefabricated taphole pipe bricks from the outer opening, and plug the outer joints tightly with external fillers. After the fillers harden, shake the furnace flat, and fill the inner joints with thin Martin sand. The inner mouth should be slightly concave, and the furnace can be lifted after sintering for 5 minutes.
3 Other matters
3.1 Residual steel and slag in the taphole jacket must be removed before taking over.
3.2 Residual steel at the outlet of the tapping hole must be removed after each furnace is tapped.
3.3 During the use of the tapping hole, it is strictly forbidden to pad the tapping hole to ensure that the tapping hole is round.
3.4 If there is a problem in the use of the tap hole, it must be replaced, and the steel pipe is strictly prohibited.
3.5 When the furnace is not making steel, the furnace should be shaken until the furnace mouth faces south (except for repairing the furnace).
4 Records
Email us: info@cxrefractories.com
What's App ID: +8619943865200
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E-mail：info@cxrefractories.com
Tel：+86-371-88888998
Fax：+86-371-88886886
Address：South Tower, Greenland Central Plaza, Zhengzhou, Henan Province, China
