Sulfur burning furnace

The invention relates to a sulfur burning furnace, belonging to the technical field of chemical industry. The sulfur burning furnace is characterized in that: the sulfur burning furnace comprises a furnace body; a firebrick insulation layer is arranged at an outer side of the furnace body; a firebrick insulation layer in the furnace body forms a furnace chamber in an encircling manner; a furnace grate is arranged in the furnace chamber; a sulfur spraying nozzle penetrating through the firebrick insulation layers is arranged at an upper part of the furnace chamber; a circulating water cooling sleeve is arranged at an outer side of the sulfur spraying nozzle; and the sulfur spraying nozzle is connected with an automatic sulfur spraying device arranged outside the furnace body. According to the sulfur burning furnace provided by the invention, sulfur is automatically added, the time and the quantity for sulfur adding in each time are adjusted according to the time for sulfur burning after the sulfur is added at a time so as to guarantee complete combustion, no pollution and closed operation, and the labor and materials are saved.