A pulse combustion rotary hearth furnace

Abstract

A pulse type combustion rotary hearth furnace belongs to the field of energy chemical industry and metallurgy technology. The equipment includes a furnace body, a furnace bottom, a transmission mechanism and a support frame. The furnace body defines a ring-shaped space structure, and multiple A pulse type burner, the furnace body forms a furnace chamber along the circumferential direction, and the furnace chamber is divided into a feeding area, a preheating area, a medium temperature area, a high temperature area, and a discharging area according to the direction of material movement. The feeding area includes a feeding area The discharge area includes a discharge port, the bottom of the furnace is made of refractory material, and a plurality of channels are arranged under the bottom of the furnace. Since the material and the flame are separated by refractory materials, the strength of the reduced pellets obtained is much higher than that obtained by other methods. At the same time, the burner periodically injects flames into the bottom channel for heating, which can effectively improve the service life of the rotary furnace. It has high productivity, Features such as high energy efficiency.

Description

technical field [0001] The invention belongs to the technical fields of energy, chemical industry and metallurgy, in particular to a pulse type combustion rotary hearth furnace. Background technique [0002] The traditional rotary hearth furnace reduction technology process is to combine iron-based oxides (or laterite nickel ore, vanadium-titanium magnetite, sulfuric acid slag or metallurgical dust, dust removal ash, steelmaking sludge, etc.) Powder, etc.) are made into spherical carbon-containing pellets after mixing the ingredients. The carbon-containing pellets are evenly distributed on the bottom of the furnace through the distribution machine, and are burned in an open flame at a furnace temperature of about 1350 ° C, and rotate with the bottom of the furnace for a circle, and the iron ore is reduced by carbon. Because the rotary hearth furnace has the advantages of wide application range of raw materials, low investment, low energy consumption, and little harm to the ...

AI Technical Summary

Problems solved by technology

But this greatly reduces the output of pellets and the utilization efficiency of the furnace. In order to solve the problem of low heating efficiency on one side of pellets and insufficient heating quality, this invention proposes a new type of pulse combustion rotary hearth furnace

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