Heating furnace for laboratory

The heating furnace comprises a furnace body, a refractory layer is arranged at the bottom of the furnace body, and a heat preservation interlayer is arranged on the side wall of the furnace body. A hearth is arranged in the furnace body, a heating device is arranged at the bottom in the hearth, a supporting frame is arranged above the heating device and fixed to the side wall of the hearth, a heating container is arranged on the supporting frame, and a feeding and discharging port is formed in the heating container. A heat preservation cover plate is arranged on the top of the hearth. The constant-temperature heating device is unique in structure, the heating temperature can be adjusted between 0 DEG C and 500 DEG C, constant-temperature heating can be well achieved, heat loss in the heating process is small, use and maintenance are convenient, and the constant-temperature heating device can better meet the requirements of actual production and research and development. 本实用新型公开了一种实验室用加热炉，包括炉体，炉体底部设置耐火层，炉体侧壁设