Puffed microbead firing furnace

The utility model relates to an expanded microbead firing furnace, which belongs to the field of expanded microbead firing equipment, and comprises a firing furnace body, a feed port and a discharge port are respectively arranged at two ends of the firing furnace body, the firing furnace body is connected with a base through a support frame, and the firing furnace body is arranged obliquely relative to the horizontal plane. The position of the feeding port is higher than that of the discharging port, the firing furnace body is connected with the driving assembly to achieve rotation, the heat preservation assembly is arranged on the periphery of the firing furnace body, a gap is formed between the heat preservation assembly and the firing furnace body, and the combustor is fixedly connected with the heat preservation assembly and communicated with a gas pipeline and a heat exchanger which are arranged outside the heat preservation assembly. The device has the characteristics of good heat preservation effect and convenience in operation.