Tundish of Refractory Materials

Product Application: Steel making, Tundish

Product Case: Anyang steel, shougang, yue yufeng steel plant

Product Classification: Tundish of refractory material

Product Description: Tundish refractory parts have inclusions, package cover, upper and lower nozzle, stopper, slag dam and dam block, impact steady flow plate, plate, etc., synthetic refractory masonry lining refractories, continuous casting and the casting refractory material.

Introduce of produce

The tundish is one of the important equipment of continuous casting process, so it is also called continuous casting tundish.

Synthetic refractory parts have inclusions, package cover, upper and lower nozzle, stopper, slag dam and dam block, impact steady flow plate, plate, etc., synthetic refractory masonry is divided into lining refractories (work and permanent layer and insulation layer), continuous casting and casting refractories, tundish on the basis of different parts, and use requirement, refractory materials used in the physical and chemical indexes and performance are also different.High quality refractory is the precondition to ensure the service time of continuous casting tundish, rongsheng can provide you with all kinds of tundish refractory according to your requirement.

The construction time of the tundish refractory: generally about 2 hours.

Service life of itundish refractory: the average service life of rongsheng contract middle package working layer is 30h, up to 35h, which is beyond the reach of firebrick masonry.

RS contract tundish service case: anyang iron and steel work intermediate magnesium-clad ramming material layer service life as the 31h, shougang synthetic magnesia vibration material service life of working layer in 33h, yue yu FengGang synthetic siliceous work ramming material layer for 30h service life.

Introduction to tundish refractory

1. 1.the tundish working layer with siliceous refractory dry vibration with magnesia ramming material dry material, the medium and small tundish for continuous casting time is shorter, the latter large tundish with long used in continuous casting.

• properties of fire-resistant materials for working layer of tundish

(1) convenient construction, mechanized operation and improved working efficiency

(2) sintering is compact, resistant to erosion, erosion and long service life

(3) non-polluting steel water can meet the needs of clean steel continuous casting

(4) the working layer does not crack during use, and it is easy to turn over the package.

1.2 physical and chemical indexes of refractory used in tundish working layer

2. Permanent layer with low cement refractory steel fibre reinforced castable, in the permanent layer is made of vibration or gravity casting forming, the service life of the furnace more than in 600, to meet the demand of continuous casting production to improve the service life.

• Properties of permanent laminated refractory

• good integrity, good thermal shock stability and long service life.
• high mechanical strength and strong combination with metal shell.
• the volume is stable. When the temperature changes, the volume will not expand or contract excessively.
• not easy to sintering with working layer.
• good heat insulation performance.

• Physical and chemical indexes of permanent layer refractory (steel fiber pouring material)

3. Thermal insulation layer with refractory vacuum fiber felt, vacuum fiber felt is high-grade refractory materials, thermal insulation heat preservation effect is good, cost-effective, easy construction, patent is RSinsulation refractories.

• characteristics of refractories for insulation layer: low thermal conductivity and easy masonry.

4. The functions of continuous casting and refractories for precast parts include

• The plug rod is made of aluminum carbon or magnesium carbon, which is suitable for casting different kinds of steel, and can be customized according to user requirements.
• Clay or high aluminum prefabricated parts for the middle bag cover can be determined according to the user’s requirements or the on-site situation.

Physical and chemical indexes of high aluminum intermediate bag cover prefabricated parts

• The water outlet area at the bottom of the middle bag is what we often refer to as the water outlet brick. The refractory material is made of high-alumina firebrick.

• Precast parts made of high aluminum, aluminum magnesium and magnesium castable materials for middle covered slag weir, slag wall and dam.

Characteristics of slag weir and impact plate for tundish

(1) good thermal shock resistance

(2) it has the best thermal strength at the working temperature

(3) the strength of PO2 is high when the content of PO2 is low

(4) less oxygen content is brought into the steel water, which is 80% lower than the high-aluminum slag wall

(5) absorb Al2O3 in the inclusion and form spinel on the surface of the slag retaining wall

• zirconium quartzite bricks or prefabricated blocks shall be used in the molten steel impact zone at the bottom of the package.

Price of tundish refractory

How much is the refractory used in continuous casting, The price is only for reference. Synthetic refractory material price depend on the type, construction technology of refractory material, in the selection of refractory at the same time, also choose the service partners, our purpose is to make the tundish increased service life.

Refractory construction technology for tundish continuous casting

Along with the development of refractory materials, construction technology for synthetic refractory brick composite masonry and amorphous powder integral pouring, and “three materials, 7 minutes of construction” can illustrate the importance of the construction. Different construction techniques meet various needs of users. RS recommends the integral casting process for continuous casting, which can improve the integrity of the inner lining of the tundish and increase the service life of the tundish. The permanent layer thickness of medium and small sized tundish is generally around 100-120mm, and the thickness of large tundish is around 150-200mm.

Matters need attention of tundish refractory

1. The steelmaking process of the steelmaking plant can directly influence the refractory materials used in the tundish and the types of use.
2. For firebrick masonry, appropriate grade of firebrick shall be selected according to the requirements of the use site.
3. Use amorphous refractory masonry in the middle, and choose the appropriate construction method for construction.
4. It is forbidden to use refractory materials that do not meet the requirements for use and the quality is not up to the standards.
5. Waterproof, waterproof, moisture-proof and classified storage are required when storing.
6. It is prohibited to use expired amorphous refractory. The shelf life of amorphous refractory is generally 6 months. If the shelf life is exceeded, the use effect will be greatly reduced.

Way of transportation for tundish refractory

1. Use tons of bags, woven bags or wooden supports and wooden boxes, depending on the refractories.
2. During transportation, it shall be rainproof and moisture-proof, and handle with care during loading and unloading.
3. If there is any damage during loading and unloading, the spare tonnage package delivered can be used.

Above is simple introduction for synthetic refractories, what kind of refractory material for steelmaking process depends on the steel mills, RS is a professional manufacturer of refractory materials and the development of synthetic monolithic refractories, and obtain good evaluation, several users more steelmaking, ironmaking and other metallurgical refractories solutions consulting rongsheng, we provide consulting service for you free of charge.