Types of tundish and main components of tundish lining

 

Different types of tundish

1. High temperature tundish

The tundish is set up for a specific metallurgical process, the lining is made of magnesia brick, and it is preheated to about 1500°C.
2. Hot tundish
That is, a kind of tundish commonly used in steel plants at present, which uses fired bricks or unfired bricks or castables as the lining of the tundish. Before pouring, it should be preheated to 800～1100℃.
3. Cold tundish
The insulation board is used as the lining, which can be used without preheating before pouring. As for the choice of which tundish type and which material is better for the lining, it depends on the cast steel, smelting method, baking conditions and the ability of the steel plant itself.

The tundish lining is mainly composed of the following parts:

(1) Insulation layer (10~30mm) This layer is next to the steel shell of the tundish, and its material is usually asbestos board, insulation brick or lightweight castable.
(2) Permanent layer (100~200mm) This layer is in contact with the insulation layer, and its material is generally clay bricks.
(3) The working layer (20~50mm) is the layer in contact with molten steel, namely the working layer. The lining materials of this layer mainly include: high alumina bricks, alkaline bricks (such as magnesia bricks, etc.), siliceous thermal insulation panels, magnesia thermal insulation panels, forsterite thermal insulation panels and coatings, such as magnesia, magnesia chrome coatings, etc. .At present, castables are also used as tundish linings.
(4) The bricks are inlaid at the bottom of the tundish for installing the tundish nozzle. The material is usually high aluminum.
(5) The material of the bottom of the bag and the bottom of the middle bag are basically equivalent to that of the working layer.
(6) Cover the tundish cover, covering the tundish, which can play the role of heat preservation and prevent molten steel from splashing. The material is usually made of clay bricks or castables.

(7) Slag retaining wall.

If you need tundish refractory products or other refractory products, welcome to contact us.

Article Source:Types of tundish and main components of tundish lining

Company name ：Luoyang Wanhao New Material Co., Ltd.

More Refractory Products: http://www.wanhaorefractory.com/en/product.html

Website: http://www.wanhaorefractory.com/

 

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