National standard rotary kiln refractory brick masonry requirements:

The refractory bricks are closely attached to the kiln body, the bricks and the bricks are strict, the brick joints should be straight, the crossovers should be accurate, the brick joints should be firm, the position is good, and the sag is not drooping.

The seams must be aligned, not climbing, not deviating, avoiding the wrong circle or meandering.

The lock seam bricks must be complete and strictly constructed according to the lock seam.

The steel for seaming should preferably not exceed 2mm and must be flat, not curled, not twisted, and free of burrs.