Improvement on non-oxidation firing electric furnace for carbon-containing materials

Abstract

The invention relates to the improvement on a non-oxidation firing electric furnace for carbon-containing materials, which is characterized in that the inner cover of a sealed cavity, which serves the function of one-way discharging, is arranged on the opening of a furnace body; a furnace cover provided with a discharging passage is located above the inner cover; and electric heating elements are particularly split-type surface-insulated electric heating tubes. Compared with the prior art, the invention can overcome the shortcomings of inner containers and greatly save the heating power, particularly, the invention can save the energy by about 30% to 50%; the carbon-containing materials can also be fired rapidly and directly without the inner containers, and meanwhile, the shortcomings caused by the original exposed electric heating wires can be avoided; the invention can greatly accelerate the cooling process in a sealed manner at the high temperature and greatly improve the service factor and the utilization factor of equipment; an external discharge cooling device allows the heavily polluted substances in the discharge to be cooled and returned from the original discharge pipe and further collected between the inner and the outer furnace covers, thereby reducing the environmental pollution.

Description

technical field [0001] The invention relates to the improvement of an electric furnace for non-oxidation firing of carbonaceous materials, in particular to an electric furnace for non-oxidation firing with no liner and long service life. Background technique [0002] Carbon-containing materials (such as carbon-containing refractory materials, carbon particles, carbon rods, graphite electrodes, etc.) , During the firing process, volatiles need to be discharged. In the prior art, in order to ensure the firing in an oxygen-isolated or reducing environment, a nested structure firing electric furnace with an additional inner furnace is usually used to ensure effective sealing at high temperatures, for example: [0003] Well type electric furnace ( figure 1 ), its structure is to place upright in the hollow heating furnace body 4-slightly smaller than the heat-resistant stainless steel liner 2 of the furnace body cavity, and the inner wall surface of the furnace body is wound wi...

AI Technical Summary

Problems solved by technology

The existing electric furnace adopts direct discharge, causing environmental pollution, which needs to be collected and processed separately, and additional equipment is required

Therefore, the existing baking and firing furnaces are not environmentally friendly, which is another major defect

Images