JPS6431909A - Method for charging raw material in blast furnace - Google Patents

Method for charging raw material in blast furnace

Info

Publication number
JPS6431909A
JPS6431909A JP18730487A JP18730487A JPS6431909A JP S6431909 A JPS6431909 A JP S6431909A JP 18730487 A JP18730487 A JP 18730487A JP 18730487 A JP18730487 A JP 18730487A JP S6431909 A JPS6431909 A JP S6431909A
Authority
JP
Japan
Prior art keywords
raw material
furnace
fine granular
granular raw
blast furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18730487A
Other languages
Japanese (ja)
Inventor
Takanobu Inada
Yoshimasa Kajiwara
Tsutomu Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP18730487A priority Critical patent/JPS6431909A/en
Publication of JPS6431909A publication Critical patent/JPS6431909A/en
Pending legal-status Critical Current

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  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To restrain flowing of fine granular raw material into the center part in a furnace and to stabilize the operation of the blast furnace by charging the raw material having near globular shape preceded charge of the fine granular raw material at the time of charging in the blast furnace as dividing coarse granular raw material and the fine granular raw material. CONSTITUTION:At the time of charging the raw material into the blast furnace as dividing the coarse grain and the fine grain, the raw material having near globular shape or mixing material of the coarse granular raw material and the raw material having near globular shape are charged, preceded charge of the fine granular raw material. Then, pellet or molded coke in which the shape factor phi=So/S, is >=0.8 (So shows surface area of a sphere having the same volume as the volume of the raw material grain and S shows the surface area of the raw material grain), is used as the raw material having near globular shape. Therefore, inclined angle on the sloping surface in the furnace is made to small and flowing of the fine granular raw material successively charged into the center part in the furnace is restrained and the fine granular raw material is locally and accurately piled near the furnace wall in the furnace.
JP18730487A 1987-07-27 1987-07-27 Method for charging raw material in blast furnace Pending JPS6431909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18730487A JPS6431909A (en) 1987-07-27 1987-07-27 Method for charging raw material in blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18730487A JPS6431909A (en) 1987-07-27 1987-07-27 Method for charging raw material in blast furnace

Publications (1)

Publication Number Publication Date
JPS6431909A true JPS6431909A (en) 1989-02-02

Family

ID=16203657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18730487A Pending JPS6431909A (en) 1987-07-27 1987-07-27 Method for charging raw material in blast furnace

Country Status (1)

Country Link
JP (1) JPS6431909A (en)

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