JPS5760003A - Production of controlling grain for steel bath temperature - Google Patents

Production of controlling grain for steel bath temperature

Info

Publication number
JPS5760003A
JPS5760003A JP13643080A JP13643080A JPS5760003A JP S5760003 A JPS5760003 A JP S5760003A JP 13643080 A JP13643080 A JP 13643080A JP 13643080 A JP13643080 A JP 13643080A JP S5760003 A JPS5760003 A JP S5760003A
Authority
JP
Japan
Prior art keywords
powder
iron
forming
shell layers
necessary
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
JP13643080A
Other languages
Japanese (ja)
Other versions
JPS6051525B2 (en
Inventor
Masakazu Yamaguchi
Tomonori Murakami
Takao Ono
Nobuo Taniguchi
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.)
Yoshikawa Kogyo Co Ltd
Nippon Steel Corp
Original Assignee
Yoshikawa Kogyo Co Ltd
Nippon Steel Corp
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 Yoshikawa Kogyo Co Ltd, Nippon Steel Corp filed Critical Yoshikawa Kogyo Co Ltd
Priority to JP13643080A priority Critical patent/JPS6051525B2/en
Publication of JPS5760003A publication Critical patent/JPS5760003A/en
Publication of JPS6051525B2 publication Critical patent/JPS6051525B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To decrease the inclusion of sulfur contents into an iron or steel bath while providing necessary strength by dividing granulation to a base grain forming period and a shell forming period for forming firm shell layers on the outside of the base grains, and changing the cement formulation in the raw materials used in the respective forming periods. CONSTITUTION:Iron-contg. powder and granules such as rolling sludge, converter dust, powder iron one and the like are so compounded that fine powder components of <=44mu are contained at >=80%. A small amt. of cement setting agent necessary for forming base grains and maintaining their shapes is added and these are mixed under controlled humidity so as to contain 11-15% water, after which the mixture is granulated by rolling to allow the contained water to ooze on the surfaces. Said base grains are then rolled in covering powder consisting of iron-contg. powder in a dry state, and a cement setting agent of an amt. necessary for formation of shell layers of required strength, whereby the covering powder is stuck on their surfaces and the shell layers are formed.
JP13643080A 1980-09-29 1980-09-29 Manufacturing method of steel bath temperature control grains Expired JPS6051525B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13643080A JPS6051525B2 (en) 1980-09-29 1980-09-29 Manufacturing method of steel bath temperature control grains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13643080A JPS6051525B2 (en) 1980-09-29 1980-09-29 Manufacturing method of steel bath temperature control grains

Publications (2)

Publication Number Publication Date
JPS5760003A true JPS5760003A (en) 1982-04-10
JPS6051525B2 JPS6051525B2 (en) 1985-11-14

Family

ID=15174955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13643080A Expired JPS6051525B2 (en) 1980-09-29 1980-09-29 Manufacturing method of steel bath temperature control grains

Country Status (1)

Country Link
JP (1) JPS6051525B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596333A (en) * 1982-06-30 1984-01-13 Sumitomo Metal Ind Ltd Treatment of caustic lime dust

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322746Y2 (en) * 1986-05-20 1991-05-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS596333A (en) * 1982-06-30 1984-01-13 Sumitomo Metal Ind Ltd Treatment of caustic lime dust
JPS629653B2 (en) * 1982-06-30 1987-03-02 Sumitomo Metal Ind

Also Published As

Publication number Publication date
JPS6051525B2 (en) 1985-11-14

Similar Documents

Publication Publication Date Title
IE790672L (en) Solid additives.
DE2611889A1 (en) High grade cement made from steelworks slags - by melting with lime in oxygen converter, using lance to heat slag mixt.
JPS5760003A (en) Production of controlling grain for steel bath temperature
JPH1119917A (en) Calcium compound coated granulated body or formed body, and manufacture thereof
JPS55155086A (en) Ground conditioner
JPS5413409A (en) Method and equipment for producing steel-making pellets using sludge containing oil and iron
JPS5663818A (en) Manufacture of zeolite molded body
DE3168648D1 (en) Process for the preparation of n,o-disubstituted urethanes, and their use as raw materials in the manufacture of isocyanates
US4220475A (en) Raw mix for producing Portland cement clinker
JPS5442305A (en) Stoppers for preventing molten slag outflow
JPS57200529A (en) Preparation of sintered ore having iron ore fine powder highly compounded therein
JPS5288520A (en) Treatment of waste generated in manufacturing alloy steel
JPS5791732A (en) Method for granulating powder stock material
JPS57188628A (en) Manufacture of sintered material
JPS5534266A (en) Soil stabilizer
RU2087420C1 (en) Method of the granulated phosphogypsum making
JPS5625934A (en) Uniform mixing and storaging method of dust comprising primarily blast furnace dust and steel making furnace dust
DE731816C (en) Process for the production of calcareous nitrogen fertilizers, especially those containing blast furnace slag
ES2006094A6 (en) A method of granulating lime powder or the like.
JPS553824A (en) Granulation of collected dust as main raw material
Kock Coating test with practical applications for determining coating behavior in the burning zone of cement rotary kilns: I
JPS579838A (en) Manufacture of sintered ore with high reducibility
JPS5358966A (en) Solidifying method for slimy waste
JPS56111568A (en) Floating plate material particle for casting
JPS57207109A (en) Production of synthetic slag making material for steel making