Coal fired flue gas furnace, coal fired high-temperature furnaceUsing smoke as a thermal conductor. Direct heating, high heat utilization rate, fast temperature rise, high temperature to meet drying requirements, equipped with a regulating device, temperature can be adjusted according to requirements, up to 1000 ℃ or above. Widely used as a supporting heat source for drying machines in chemical, mining, coal, feed and other industries, and used in conjunction with various drying equipment.