Apparatus for the combustion of gas exiting from a furnace, for the preheating of scraps entering the furnace itself and related process

A furnace and equipment technology, applied in lighting and heating equipment, preheating costs, furnace components, etc., can solve problems such as high cost, difficult calibration and control, and complexity, and achieve the effect of improving efficiency, improving control, and reducing burden

Active Publication Date: 2008-02-06
ТЕНОВА ТЕКНОЛОДЖИЗ (ТЯНЬЦЗИНЬ) КО., ЛТД.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This part of the system is costly, complex and difficult to calibrate and control

Method used

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  • Apparatus for the combustion of gas exiting from a furnace, for the preheating of scraps entering the furnace itself and related process
  • Apparatus for the combustion of gas exiting from a furnace, for the preheating of scraps entering the furnace itself and related process

Examples

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Embodiment Construction

[0068] Referring to the drawings, generally and in particular to Figure 1, there is shown an embodiment of an apparatus according to the invention, wherein an electric arc furnace 10 for producing steel has an extended preheating chamber or tunnel 12, preferably a vibrating channel, for the Metal and non-metal charges are introduced into the furnace.

[0069] The furnace 10, which represents a three-phase electric furnace, may alternatively be a DC electric furnace, a plasma furnace or an induction furnace.

[0070] The preheating tunnel or cavity 12 has elongated supports 14 covered by corresponding elongated hoods, preferably coated with refractory material.

[0071] The preheating chamber or tunnel 12 has a mechanical seal 18 at the inlet end of the charge, and starting from the inlet end of the charge, the preheating tunnel or chamber successively comprises: an inlet or introduction section 21 of the charge, which includes an inlet or introduction section 21 for preventing...

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PUM

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Abstract

Apparatus for the combustion of gas exiting from an electric arc furnace where the heat of combustion is used for the preheating of scraps entering the furnace wherein the apparatus has an insertion device for introducing comburent substance into a preheating chamber or loading tunnel for scrap metal where the loding tunnel has an inlet section for scrap metal, a seal section to prevent an uncontrolled entrance of air in the tunnel, a heating section and an unloading section for delivering scrap metal to the furnace. The insertion device for the comburent substance has one or more adjustable openings placed in the loading tunnel, and said apparatus comprises a device or a series of devices.

Description

technical field [0001] The present invention relates to an apparatus and associated process for the combustion of exhaust gases from a furnace to preheat scrap steel entering the furnace itself. Background technique [0002] Continuous scrap charging systems in electric arc furnaces (EAFs) for steel production, such as the CONSTEEL(R) system, are of increasing interest. [0003] A continuous charging system for scrap in electric arc furnaces combined with a preheating system that preheats scrap metal entering the furnace itself allows to reduce the processing time of scrap metal in the EAF and to reduce the EAF heat requirements, in the form of electrical or chemical energy supply. [0004] In a structural procedure similar to the CONSTEEL(R) system, the hitherto uniform procedure, i.e. charging the scrap metal into the charging tunnel or preheating chamber of the furnace, is depressurized relative to the environment, thus actually functioning as a chimney, The hot gases p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/18F27D17/00F27D13/00F27D99/00
CPCF27B3/18C21C5/567F27D17/003F27B9/10F27D13/002Y10S266/901F27B3/28C21C5/565F27D19/00F27D99/0073F27B9/38Y02P10/20F27B3/10F27D13/00F27D17/00
Inventor P·阿根塔S·雷亚利C·洛达蒂M·比安奇费里
Owner ТЕНОВА ТЕКНОЛОДЖИЗ (ТЯНЬЦЗИНЬ) КО., ЛТД.
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