RH vacuum refining furnace which is a liquid steel refining equipment with vacuum degassing is mainly used for the clean steel production, such as low carbon steel, low nitrogen clean steel and low hydrogen steel.

　　Refractories used for RH vacuum refining furnace should have the properties of good vacuum resistance, erosion resistance and thermal shock resistance. Thus it can be seen that it is necessary to select refractories carefully in order to meet the requirements for RH vacuum refining furnace.

　　While based on high-quality refractory products, Hitech Material provides the most perfect solution for RH vacuum refining furnace.

　　Taking into account the demand of smelting clean steel, RH vacuum refining furnace refractories had better contain no carbon, nitrogen and hydrogen element, etc, so as not to impact the quality liquid steel.

　　1. Vacuum chamber

　　The upper and lower of vacuum chamber is generally lined with magnesia chrome bricks.

　　2. Snorkel

　　The interior of snorkel is built by magnesia chrome bricks, while exterior uses magnesia-spinel refractory castables.

　　Along with the steady development of refractory materials, new refractories begins to used for RH vacuum refining furnace as substitute of magnesia chrome bricks in order to solve the problem of environmental protection.

　　Experiments results prove that low-carbon MgO-C bricks have been made obvious progress are many worthy of further improvement. Besides that, monolithic refractory materials will be a trend. Especially, magnesia-alumina-spinel and magnesia-zircon castables are gradually used for snorkel.