Magnesite-carbon refractories

Details Magnesite-carbon refractories Magnesite-carbon refractories

C - Chemistry, Metallurgy

04

B

6/167, 261/25, 4

C04B 35/043 (2006.01) B22D 41/02 (2006.01) C04B 35/01 (2006.01) C04B 35/66 (2006.01)

Patent

CA 1337367

A mix for forming a carbon-bonded refractory shape comprising from about 70 to 92 wt.% of a high purity magnesite and about 8 to 30 wt.% of a high purity graphite, and for each 100 wt.% of said magnesite and graphite, from about 1.5 to 6 wt.% of a carbon-containing bonding agent; said graphite containing at least about 98% carbon and having at least about 75% by weight -65 mesh or finer particles and said magnesite containing at least about 98% MgO, and containing 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 shape and liner for basic oxygen furnaces made from such shapes and the method of increasing the life of liners for basic oxygen furnaces.

610045

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