Method for producing a basic sintered material

Details Method for producing a basic sintered material Method for producing a basic sintered material

C - Chemistry, Metallurgy

04

B

261/30

C04B 9/20 (2006.01) C04B 35/047 (2006.01)

Patent

CA 1072130

ABSTRACT OF THE DISCLOSURE A basic sintered material for use in the production of refractory magnesia-chromite and chromite-magnesia bricks is formed by mixing (a) magnesium oxide or a substance which produces magnesium oxide on combustion in a grain size of less than 0.2 mm but 80% < 0.063 mm with (b) a substance containing chromic oxide or chrome ore. Component (b) is used partly in fine grain form (35 to 75% by weight < 0.063 mm) with the balance in coarse grain form (grain size 0.5 to 3 mm). Thus, a grain-size gap exists. The mixture is formed into briquettes, sintered and then crushed to give a material which can be used in the production of bricks having good hot and cold strength, resistance to cracking in use, and wear resistance.

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