Top charging device of shaft furnace

Abstract

The invention discloses a top charging device of a shaft furnace, which comprises a charging tank, an upper sealing valve arranged on an inlet of the charging tank, a material flow regulating valve arranged on an outlet of the charging tank, a lower sealing valve connected with an outlet of the material flow regulating valve, a bunker connected with a discharging hole of the lower sealing valve, and a distributor connected with an outlet of the bunker, wherein a uniform pressure relief interface is arranged in the charging tank. According to the top charging device of the shaft furnace, the uniform pressure relief interface is connected with a uniform pressure relief device, so that a pressure in the charging tank can be regulated to reach a required value, the charging operation is realized on the bunker or a region above the bunker under the working condition of normal pressure, the smooth charging of the shaft furnace under the working condition of pressure is realized; and the top charging device can carry out charging operation under the working condition of normal pressure. The top charging device of the shaft furnace has the advantages of compact and simple structure, less devices, and lower building cost; and a modular design is adopted, all single devices can be separately maintained, the maintenance time can be greatly saved, and the maintenance cost is lowered.

Description

technical field [0001] The invention relates to the technical field of ironmaking equipment, in particular to a furnace top charging device for a shaft furnace. Background technique [0002] Due to its stable composition, low harmful impurities, uniform particle size and many other advantages, direct reduced iron plays an increasingly important role in the field of iron and steel metallurgy. In recent years, the growth rate of global direct reduced iron production has reached 9%, which shows that its development potential is quite huge. There are many kinds of direct reduced iron production techniques, among which the gas-based shaft furnace is the mainstream technology, and the output of direct reduced iron has accounted for about 75% of the total output. [0003] The furnace top charging device is the key equipment of the direct reduction shaft furnace, and its working performance directly affects the normal production of the shaft furnace. The shaft furnace is continuou...

AI Technical Summary

Problems solved by technology

The shaft furnace is continuously charged. It is relatively easy to charge the shaft furnace operated under normal pressure, but it is more difficult to charge the shaft furnace operated under pressure.

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