An electric arc furnace anti-shock baffle feeding scrap steel preheating chamber-dust removal structure

Abstract

The invention discloses an electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure, and belongs to the technical field of metallurgy. The electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure comprises a steel scrap preheating chamber arranged obliquely, wherein a discharge port in the lower end of the steel scrap preheating chamber is connected with an electric-arc furnace; a dedusting pipe chamber is arranged at the upper end of the steel scrap preheating chamber; a finger-like bracket is arranged at an interface side of the steel scrap preheating chamber and the electric-arc furnace; the steel scrap preheating chamber is provided with at least one bending part; a charging port is formed directly above the upper end of the steel scrap preheating chamber; and a vertical projection surface of the charging port can not be directly projected onto the finger-like bracket. By bending the vertical the steel scrap preheating chamber, steel scrap is completely prevented from directly falling onto the finger-like bracket, the movement direction of the steel scrap is changed by employing oblique surface flow guide, and internal friction and impact are generated in the steel scrap, so that impact energy of the steel scrap on the finger-like bracket is consumed, the falling height of the steel scrap is reduced, the maintenance frequency of a scrap preheating device is reduced greatly, and the reliability of equipment is improved greatly. The electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure has high popularization value on the electric-arc furnace.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an anti-impact baffle feeding scrap steel preheating chamber-dust removal structure of an electric arc furnace. Background technique [0002] Energy saving, consumption reduction, and environmental protection in electric arc furnace steelmaking have always been one of the core technologies in the development of global electric arc furnace steelmaking technology. Among them, the technology of using electric arc furnace flue gas to preheat scrap steel is a technology that has been studied at home and abroad for more than 20 years. However, due to the technical difficulty, only a small number of solutions have been put into practical use at present, and the typical representative is finger shaft furnace. (DE4025249A1-1992), shaft side push feeding (US2007 / 0013112A1) and CONSTEEL (US5400358-1992) technology of continuous vibration feeding. [0003] The finger shaft fu...

AI Technical Summary

Problems solved by technology

Therefore, this kind of scrap steel preheating technology with a supporting device has a better effect of preheating and energy saving because the flue gas can penetrate the scrap steel layer, which can reach 60-100kw.h per ton of steel. The direct impact of the bracket can easily lead to being smashed by scrap steel, which increases equipment maintenance and affects the popularization and use of scrap steel preheating technology

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