REFRACTORY SHAPED PRODUCT FOR LAYING OF COKE-OVEN DOORS Russian patent published in 1994 - IPC

FIELD: coke-oven structural members. SUBSTANCE: refractory product for laying coke-oven doord has vertical (side) faces, one of which is cylindrical one, and horizontal faces. Novelty in configuration of refractory product is making of horizontal faces in form od isosceles right-angled triangle. From vertex of acute angle, the triangle is reduced by sector area. Sector radius is equal to radius of door opening and arc length amounts to not more than 1/8 of opening length. In this case, triangle base size equals maximum 6 raii of opening. EFFECT: higher efficiency. 3 dwg