Kiln bottom fire-resistant heat-insulation strengthening device

The utility model belongs to the technical field of shaft kiln structures, and particularly relates to a kiln bottom fire-resistant heat-insulation strengthening device which comprises a dish-shaped kiln bottom component with a plurality of feed openings and a center hole, and a steel structure and a fire-resistant material layer are arranged in the kiln bottom component. An outer wall steel structure, a center hole steel structure, a bottom steel structure, a feed opening steel structure and feed opening reinforcing steel bars in the steel structure are connected into a whole in a welded mode, an outer kiln wall heat preservation and insulation refractory material layer is built on the inner side of the outer wall steel structure, and an inner kiln wall heat preservation and insulation refractory material layer is built on the outer side of the center hole steel structure. A kiln bottom wear-resistant castable layer is built on the upper surface of the bottom steel structure, and all the parts are bonded thr