Vertical shaft stock bin for scrap steel preheating processing

Abstract

The invention discloses a vertical shaft stock bin for scrap steel preheating processing. The vertical shaft stock bin comprises a bin body, a feeding port and a sealing system are arranged on the upper portion of the bin body, the sealing system comprises a valve, an upper air suction port and a lower air suction port, the valve is arranged at the feeding port, and the upper air suction port andthe lower air suction port are arranged on a bin main body of the bin body up and down. According to the vertical shaft stock bin, the arrangement manner that a vertical shaft stock bin is directly arranged on a smelting electric furnace in the past is changed, and the problem that the service life of the electric furnace is affected due to large impact to the smelting electric furnace below whensteel scrap with the weight of dozens of tons is discharged is solved; and meanwhile, the vertical shaft stock bin has the characteristics of being good in steel scrap preheating effect and good in sealing performance, the problem that the temperature in the electric furnace is sharply reduced cannot be caused during steel scrap discharging, high-temperature foam slag in the furnace cannot be affected, and therefore the steel smelting efficiency is further improved.

Description

technical field [0001] The invention relates to a feed bin, in particular to a shaft feed bin for preheating processing of scrap steel. Background technique [0002] Scrap iron and steel resources are one of the indispensable resources in today's world iron and steel industry. According to the statistics of international authoritative professional organizations, in the past 50 years, 40% of the crude steel produced in the world is made of scrap steel. A large amount of high-temperature heat is generated during the smelting of scrap steel, which cannot meet the requirements of direct discharge due to its high temperature. It is necessary to cool this high-temperature heat. The concept of preheating scrap steel. [0003] Shaft preheating is a scrap steel preheating device placed on the smelting electric furnace. Its principle is to fully absorb and utilize the heat generated during scrap steel smelting to the greatest extent. However, there are certain problems in this metho...

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Problems solved by technology

[0003] Shaft preheating is a scrap steel preheating device placed on the smelting electric furnace. Its principle is to fully absorb and utilize the heat generated during scrap steel smelting to the greatest extent. However, there are certain problems in this way. The scrap steel is fed into the external cold air, which further affects the temperature in the melting furnace and reduces the melting efficiency. Second, the weight of the preheated scrap steel is very large, usually tens of tons. Large impact will affect the service life of the electric furnace. At the same time, due to the excessive cutting, the temperature in the electric furnace will drop sharply, so that high-temperature foam slag cannot be formed, which will affect the efficiency of scrap steel smelting

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