Patent ID: 6814268
Filing Date: 2004-11-09
Classification: B22D,Y10T

Abstract:
A refractory plate for a slide gate valve, comprising a shape circumscribed by a rectangle having two elongated sides, a farthest shortened sides, and a closest shortened side; the shape defining a pouring hole positioned substantially midway between the elongated sides and closer to the closest shortened side than to the farthest shortened side; the pouring bole circumscribed by a circle having a center; the rectangle having four quadrants defined by a first perpendicular line parallel to the elongated sides, a second perpendicular line parallel to the shortened sides, the first and second perpendicular lines intersecting at the center of the circle; each quadrant having a first diagonal intersecting the center and a second diagonal; the shape comprising at least two farthest inclined edges and two closest inclined edges, at least a portion of the farthest inclined edge of a quadrant no more than 5Â° off parallel from the second diagonal, and at least a portion of the closest inclined edge in a quadrant no more than 5Â° off parallel from a direction ranging from the second diagonal and a perpendicular to the first diagonal.