JPS56163225A - Lump steel and its production - Google Patents

Lump steel and its production

Info

Publication number
JPS56163225A
JPS56163225A JP6640280A JP6640280A JPS56163225A JP S56163225 A JPS56163225 A JP S56163225A JP 6640280 A JP6640280 A JP 6640280A JP 6640280 A JP6640280 A JP 6640280A JP S56163225 A JPS56163225 A JP S56163225A
Authority
JP
Japan
Prior art keywords
pellets
raw materials
powder
sizes
basing
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.)
Granted
Application number
JP6640280A
Other languages
Japanese (ja)
Other versions
JPS5853697B2 (en
Inventor
Noboru Sakamoto
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP6640280A priority Critical patent/JPS5853697B2/en
Publication of JPS56163225A publication Critical patent/JPS56163225A/en
Publication of JPS5853697B2 publication Critical patent/JPS5853697B2/en
Expired legal-status Critical Current

Links

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To improve the distribution state of the charging raw materials in a furnace and uniformalize gas flow distributions by sprinkling powdery mixture of carbon sources and silica sources to the pellets molded from the powder and granules of iron source raw materials and sintering the pellets.
CONSTITUTION: Raw materials are properly ground with a grinding mechanism 11, are sieved with a screen 12, and are granulated to prescribed grain sizes, for example about 5W20mm in the 1st pelletizer 13a. The pellets are transferred into the 2nd pelletizer 13b. Respective raw materials are charged from hoppers 21, 22 containing coal and silica powder into a mixer 22 where they are mixed in such a manner that the carbon powder is contained at about 0.5W5.0% by basing on the silica powder, and these powders are sprinkled on the surfaces of the green pellets. The mixed powders are contained at about 1W10% by basing on the green pellets. Thence, the pellets are sintered in a static state in a sintering mechanism 18, and the sintered lumps of grown sizes are sent to a breaker 19, where they are broken so as not to breakdown the pellet grains 1, whereby the lump steel of suitable sizes is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP6640280A 1980-05-21 1980-05-21 Ingot steel and its manufacturing method Expired JPS5853697B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6640280A JPS5853697B2 (en) 1980-05-21 1980-05-21 Ingot steel and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6640280A JPS5853697B2 (en) 1980-05-21 1980-05-21 Ingot steel and its manufacturing method

Publications (2)

Publication Number Publication Date
JPS56163225A true JPS56163225A (en) 1981-12-15
JPS5853697B2 JPS5853697B2 (en) 1983-11-30

Family

ID=13314770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6640280A Expired JPS5853697B2 (en) 1980-05-21 1980-05-21 Ingot steel and its manufacturing method

Country Status (1)

Country Link
JP (1) JPS5853697B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191153U (en) * 1986-05-26 1987-12-04
EP0578253A1 (en) * 1986-12-15 1994-01-12 Nippon Kokan Kabushiki Kaisha Method for manufacturing agglomerates of fired pellets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62191153U (en) * 1986-05-26 1987-12-04
EP0578253A1 (en) * 1986-12-15 1994-01-12 Nippon Kokan Kabushiki Kaisha Method for manufacturing agglomerates of fired pellets

Also Published As

Publication number Publication date
JPS5853697B2 (en) 1983-11-30

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