Hard felt sintering rack

The utility model discloses a hard felt sintering rack which comprises a stone mill bottom plate and a material plate, layer plates are evenly arranged above the graphite bottom plate at intervals, the layer plates are connected through supporting columns, the layer plates and the graphite bottom plate are connected through supporting columns, the stone mill bottom plate and hard felts to be sintered stacked at the upper end of each layer of layer plate are placed in a single-layer or double-layer mode, and the stone mill bottom plate and the hard felts to be sintered are placed in a single-layer or double-layer mode. Graphite paper and a material plate are laid at the upper end of the to-be-sintered hard felt from bottom to top, the graphite paper is arranged between the to-be-sintered hard felt on the upper portion and the material plate on the lower portion when double-layer placement is adopted, and a gap is formed between the to-be-sintered hard felt and the layer plate on the upper portion. Graphite pap