Refractories for Iron and Steel
With the experience in iron and steel industry,Fengyuan Refractories provides a series of refractory lining for electric arc furnace,converters,tundish,torpedo ladle,AOD furnace,blast furnace and steel ladle.
The following lets' talk about the application of refractory lining in different furnace.
Electric Arc Furnace
EAF is one of the most important steel making equipment in the area of metallurgy, using scrap steels as raw materials. In recent years, a series of new technologies have emerged in EAF steel making, which leads to higher demand for electric arc furnace.
EAF furnace including four parts: bottom,tap hole,wall and roof.
In electric arc furnace,the mainly used products are magnesia bricks,magnesia carbon bricks,magnesia chrome bricks, magnesia series ramming mass and castables.
Bottom | Tap Hole | Wall | Roof |
Magnesia bricks,Magnesia chorome bricks | Magnesia carbon brick,magnesia bricks,blocks | Magnesia carbon bricks | High alumina blocks or corundum blocks |
Converter Refractory Brick
At present, top-bottom combined blowing technology is the main converter steel making process,as it can abbreviate steel making time, enhance quality of liquid steel and reduces the cost of steel making. Meanwhile, lining erosion is accelerated. In this connection, Fengyuan provides clients with high-quality converter refractories and a complete solution for combined blowing converters.
Refractory lining for converter is mainly magnesia carbon brick.
Because converter furnace is mainly affected by erosion-corrosion,slag corrosion and mechanical damage,magnesia carbon brick with high corrosion resistance is the good choice.
Furnace crown,Trunnion,Slag line,Charging side,Tap hole | Others |
magnesia carbon bricks | Permanent lining: Magnesia brick Working lining:MgO based or MgO-C based gunning mix Joint filler:MgO based gunning mix |
Tundish Refractories
The role of the tundish is to stabilize the temperature of liquid steel and make the inclusions in liquid steel floating, in order to assure continuous casting process can smooth working when liquid steel is lacking in a short time or ladle is changing.
With the advancement of the continuous casting process, and the high requirement for quality of steel, the proportion of the clean steel and special steel in production is expanding.
Continious casting should have the characteristics of high corrosion resistance, non-clogging, non pollution to liquid steel, and can even improve the liquid steel cleanliness.
Blast Furnace Refractories
Blast furnace is a thermal equipment for continuous iron making under high temperature. The furnace body including throat, shaft, belly, bosh, hearth and bottom from above to below.
Fengyuan Material provides a solution for blast furnace with super refractories suitable for every part:
Materials | Application |
Fire Clay Brick | Bottom,Shaft,Crucible |
High Alumina Brick | Bosh,Stave,Shaft,Bottom |
Alumina Carbon Brick | Shaft,Belly |
Corundum Brick | Shaft,Belly,Bosh |
Combined Brown | Ceramic Cup Hearth |
Corundum Brick | Ceramic Pad |
Corundum Mullite Brick | Stave,Bottom, Hearth |
Mullite Brick | Hearth, Bottom,Shaft |
Mullite Cordierite Brick | Stave |
Al2O3-SiC-C Brick | Stave |
Steel Ladle Refractory Brick
Steel ladle is an equipment of steel making-continuous casting process, which is separated into ingot casting ladle and continuous casting ladle.
As the using conditions of steel ladle is different, the requirement for selection of steel ladle refractories is also not necessarily the same, and there also exist differences in service life of linings.
The refractory lining for steel ladle including :
Ingot casting ladle
Ladle of EAF | Ladle of Converters |
Permanent layer:fireclay bricks, agalmatolite bricks Working layer: alumina magnesia carbon bricks Monolithic refractory materials: Al2o3-MgO-C well blocks for purging plug of ladle, silica-based stuffing sand, Al₂O₃-MgO refractory mortar | Permanent layer: calcium silicate boards, high-alumina refractory castables; |
Continuous casting ladle
Ladle of EAF | Ladle of Converters |
Slag line: magnesia carbon bricks; | For small sized ladle, alumina-magnesia refractory castables are generally used as integral permanent linings. |