Heat storage structure based on steel slag heat storage bricks and heating method

The invention relates to the field of heat storage equipment, and particularly relates to a heat storage structure based on steel slag heat storage bricks and a heating method. The heat storage structure is a stack body formed by stacking rectangular heat storage bricks of the same specification in a front-back mode, wherein each heat storage brick body is provided with a rectangular air duct groove, the two sides and the lower surface of each air duct groove are provided with a rectangular protrusion and a groove correspondingly, and thus the upper-layer heat storage brick and the lower-layer heat storage brick can be engaged with each other conveniently; the two sides of each heat storage brick are provided with a semicircular protrusion and a semicircular groove correspondingly, thus the left-right adjacent heat storage bricks can be engaged with each other conveniently, and the stability of the structure of a heat storage device is improved; and the lower surface of each heat storage brick is provided wit