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High Alumina Runner Brick

High Alumina Runner Brick, which is made of Calcined Bauxite and high-quality clay and fired at a high temperature of 1380 ℃ ~ 1450 ℃, can be used well below 1450 ℃. Its high temperature resistance, erosion resistance of molten steel and molten iron are superior to that of the clay quality runner brick. It is widely used in the casting process of steel plants and foundries

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Description

1.Main performance parameters of High Alumina Runner Brick

ITEM	UNIT	CL-55	CL-65	CL-75
Al2O3	%	≥55	≥65	≥75
Refractoriness	℃	1770	1790	＞1790
Density	g/cm3	2.20~2.35	2.30~2.50	2.45~2.60
Porosity	%	22~25	24~27	24~27
Compressive strength	Mpa	40~50	45~60	45~65
Refractoriness under load	℃	≥1450	≥1480	≥1500
Reheating linear change rate 1450℃*2h,%	%	0.1~-0.3	0.1~-0.3	0.1~-0.3

2. Features of High Alumina Runner Brick:

1) High temperature resistance is better than clay products

2) Good strength, erosion resistance and corrosion resistance of molten steel and molten iron

3) 2-5 times of use

3. Application: Flowing casting process of molten iron and steel

4. Production process:

1)Raw material crushing

2)Mud preparation: according to the proportion of raw materials for preparation and mixing, feeding order: coarse particles + binder + fine powder, mixing 20-30 minutes

3) Molding and drying: press the mud into brick, control the porosity of brick at 25-30%, and dry it in the dryer,130-200℃*24h

4) Firing: tunnel kiln firing, about 1500 ℃, holding time about 10h

5) Then check the packing

5.Good feedback of product use effect,the products have been exported to South Korea, Japan,India

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