Method for manufacturing refractory oxide-carbon bricks

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Controlling varying temperature or plural heating steps

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264 63, C04B 3564

Patent

active

050247930

ABSTRACT:
A method for the manufacture of refractory, bricks that are resistant to molten iron and slag. The bricks are made of refractory oxides and/or the corresponding hydroxides and carbon by mixing fine-particle refractory oxides and/or the corresponding hydroxides with pitch to form a homogeneous green mixture, heating the green mixture in the presence of carbon to form a solid thermally stable sintered product of oxide and carbon, reducing the sintered product into smaller size particles, binding the reduced sintered particles with a mixture of refractory oxide and/or corresponding hydroxide and pitch, compacting the thus obtained substance into a green molded article, and firing the green molded article in a reducing atmosphere to form refractory bricks.

REFERENCES:
patent: 4059662 (1977-11-01), Murakami
patent: 4510191 (1985-04-01), Kagami
patent: 4532091 (1985-07-01), Dias
patent: 4634685 (1987-01-01), Pohl
patent: 4775504 (1988-10-01), Shikano

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