The basic principle of reverberatory furnace smelting

The basic principle of reverberatory furnace smelting

In the reverberatory furnace smelting process, the main endothermic reaction on the material slope, followed by the exothermic reaction that generates slag. In the total heat balance of the smelting process, the heat released by the generated slag does not exceed 6% to 8% of the heat required for the smelting process. If the blowing air is not preheated, the total heat required for reverberatory furnace smelting is 85% to 90% From the combustion of fuel, only a small part of the heat generated by fuel combustion is consumed in the melting of the charge, and most of it is taken away with the furnace gas and compensates for the loss. The actual fuel consumption during the smelting process is generally 2 to 3 times the theoretical requirement.

Graphite resistance radiation heating furnace classification

According to the heat transfer method, resistance furnaces are divided into radiation resistance furnaces and convection resistance furnaces. Radiant resistance furnace is mainly used for radiant heat transfer, and convection heat transfer is less effective; convection resistance furnace is mainly used for convection heat transfer, usually called air circulation resistance furnace, which is heated by hot air, and the furnace temperature is mostly lower than 650℃ .

The resistance furnace can heat the material to a very high temperature. For example, the carbon material graphitization electric furnace can heat the material to more than 2500 □. The direct heating resistance furnace can be made into a vacuum resistance heating furnace or a protective gas resistance heating furnace. In powder metallurgy, it is often used for sintering tungsten, tantalum, niobium and other products.

Graphite resistance radiation heating furnace is an electric furnace that uses Joule heat generated by current passing through a conductor as the heat source. The resistance furnace uses electricity as the heat source, and converts electrical energy into heat energy through electric heating elements, and heats the metal in the furnace. Resistance furnace and flame ratio, high thermal efficiency, up to 50-80?G, easy control of the thermal system, good working conditions, long furnace life, suitable for heating demanding workpieces, but high power consumption.

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