High temperature sintering kiln

The invention provides a high temperature sintering kiln, which comprises a kiln body (1), a plurality of microwave heating devices (7) arranged on the kiln body (1) and transmitting microwave to the inside of the kiln body (1), a closed type polygon track (10), a push rod (8) and a controller. The kiln body (1) is provided with a temperature rising section (4) communicated with a feeding port (2) of the kiln body (1), a high temperature section (5) communicated with the temperature rising section (4) and a cooling section (6) communicated with the high temperature section (5) and a discharging port (3) of the kiln body (1). One side of the closed type polygon track (10) penetrates through the kiln body (1), and the closed type polygon track is provided with the closed type polygon track (10) of a push plate (9) for containing vanadium nitrogen alloy materials (19). The push rod (8) is arranged at the turning position of the closed type polygon track (10) and capable of pushing the push plate (9) to move on the closed type polygon track (10). The controller controls the push rod (8) and the microwave heating device (7) to work. The high temperature sintering kiln enables the production process to be more energy-saving and higher in efficiency while achieving continuous production.