Title:
【発明の名称】鉄系スクラップの予熱装置および予熱方法
Document Type and Number:
Japanese Patent JP3092083
Kind Code:
B2
Abstract:
In order to preheat pieces of iron scrap of various sizes and shapes highly effectively while avoiding the fusion of the pieces of iron scrap, a rotary kiln type preheating furnace and a shaft type preheating furnace are arranged in parallel with each other in the front stage of a melting furnace in which iron scrap is melted, and preheated iron scrap is charged from both preheating furnaces into the melting furnace. A damper is provided between the shaft type preheating furnace and the melting furnace, so that exhaust gas discharged from the melting furnace is prevented from directly flowing into the shaft type preheating furnace and introduced into the rotary kiln type preheating furnace. Exhaust gas which has passed through the rotary kiln type preheating furnace is introduced into the shaft type preheating furnace preferably from an upper portion and discharged from a lower portion. The rotary kiln type preheating furnace and/or the shaft type preheating furnace includes an air or oxygen gas introducing port used for burning combustible components contained in the exhaust gas
Inventors:
Toshiya Harada
Yukinori Shigeyama
Yukinori Shigeyama
Application Number:
JP4841096A
Publication Date:
September 25, 2000
Filing Date:
February 13, 1996
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21C5/42; C21C5/56; F27B3/18; F27D13/00; C21C5/40; F27B7/00; (IPC1-7): F27D13/00
Domestic Patent References:
| JP5266813A | ||||
| JP821691A | ||||
| JP914865A | ||||
| JP7332874A | ||||
| JP5747247B2 | ||||
| JP6038636B2 |
Attorney, Agent or Firm:
Masamitsu Akizawa (1 person outside)