ARCH BRICK, CYLINDRICAL INTERNAL LINING OF TUBULAR ROTARY KILN AND TUBULAR ROTARY KILN Russian patent published in 2018 - IPC F27B7/28 

FIELD: construction.

SUBSTANCE: invention relates to a refractory arch brick for lining a tubular rotary kiln. Refractory arch brick has a rectangular outer base surface with dimensions a×l, rectangular inner base surface with dimensions b×l, two rectangular side surfaces with dimensions l×h, two trapezoidal end surfaces with dimensions a/b×h, where a/b are two sides of the end surface, having different lengths, and before laying, said brick is divided into at least two separate sections along at least one separating surface extending from the base surface to the end surface, separating surface extends at an angle >20 degrees and ≤75 degrees with respect to the base surface and at least one section of the brick has two opposite surfaces in the form of a trapezoid or a triangle.

EFFECT: preventing self-destruction of bricks and the reduction of axial pressure and mechanical stress on the brick.

6 cl, 6 dwg