Magnesite-carbon refractories

Details Magnesite-carbon refractories Magnesite-carbon refractories

C - Chemistry, Metallurgy

04

B

261/25

C04B 35/03 (2006.01) C04B 35/01 (2006.01) C04B 35/04 (2006.01) C04B 35/043 (2006.01) C04B 35/66 (2006.01)

Patent

CA 2038531

A mix for forming a carbon-bonded refractory comprising from about 8 to 30 wt.% of a high purity carbon, about 0.1 to 1 wt.% of aluminum metal, magnesium metal, or a mixture thereof, and the balance a high purity magnesite, and for each 100 wt.% of said magnesite, carbon, and metal, a carbonaceous bonding agent in an amount sufficient to bond the mix; said carbon containing at least about 98% carbon and said magnesite containing at least about 98% MgO, and con- taining less than about 0.03% boron oxide, less than about 0.3% silica, and having a CaO/SiO2 weight ratio above about 2, and the resultant carbon-bonded refractory shapes and liners for metal processing equipment, especially BOF, made from such shapes and the method of increasing the life of liners for such equipment.

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