JPS5446197A - Production of crystal-containing blast furnace granulated slag - Google Patents

Production of crystal-containing blast furnace granulated slag

Info

Publication number
JPS5446197A
JPS5446197A JP11360677A JP11360677A JPS5446197A JP S5446197 A JPS5446197 A JP S5446197A JP 11360677 A JP11360677 A JP 11360677A JP 11360677 A JP11360677 A JP 11360677A JP S5446197 A JPS5446197 A JP S5446197A
Authority
JP
Japan
Prior art keywords
slag
blast furnace
temp
contg
seeds
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
JP11360677A
Other languages
Japanese (ja)
Inventor
Yuichi Urakawa
Kazuo Kamei
Kanji Yokoe
Hisamitsu Harada
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP11360677A priority Critical patent/JPS5446197A/en
Publication of JPS5446197A publication Critical patent/JPS5446197A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/034—Stirring or agitating by pressurised fluids or by moving apparatus
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/068—Receptacle features where the slag is treated with a sealed or controlled environment
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Manufacture Of Iron (AREA)

Abstract

PURPOSE:To efficiently produce crystal-contg. blast furnace granulated slag by stepwise dropping molten blast furnace slag to cool and stir it in a reduced cooling time and charging inorg. metal oxide-contg. seeds to facilitate formation and growth of crystals, followed by granulation with water. CONSTITUTION:Molten blast furnace slag of 1,500-1,550 deg.C is stepwise and naturally dropped onto inclined spouts stepwise assembled to be cooled to a temp. around the melilite crystallization temp., usually 1,400-1,440 deg.C. At this time, each of the spouts is vibrated with a vibrator and cooled with water to reduce cooling time as well as to control formation and growth of solidified slag. The cooled slag is then charged with inorg. metal oxide-contg. seeds to facilitate formation and growth of crystals, and granulated by water quenching to obtain crystal-contg. blast furnace slag useful as fine aggregate for concrete. The seeds are of 300-100mu in diameter and less than 5% of them is charged into the slag when it is at a temp. between the melilite crytallization temp. and 70 deg.C lower than the temp.
JP11360677A 1977-09-20 1977-09-20 Production of crystal-containing blast furnace granulated slag Pending JPS5446197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11360677A JPS5446197A (en) 1977-09-20 1977-09-20 Production of crystal-containing blast furnace granulated slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11360677A JPS5446197A (en) 1977-09-20 1977-09-20 Production of crystal-containing blast furnace granulated slag

Publications (1)

Publication Number Publication Date
JPS5446197A true JPS5446197A (en) 1979-04-11

Family

ID=14616469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11360677A Pending JPS5446197A (en) 1977-09-20 1977-09-20 Production of crystal-containing blast furnace granulated slag

Country Status (1)

Country Link
JP (1) JPS5446197A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937334U (en) * 1982-08-31 1984-03-09 日本鋼管株式会社 Gutter for air crushed slag production
JPS59109737U (en) * 1982-12-29 1984-07-24 日本鋼管株式会社 Gutter equipment for air crushed slag production
JPS60156400U (en) * 1984-03-28 1985-10-18 川崎製鉄株式会社 Water crushing production equipment equipped with slag shell crushing equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5937334U (en) * 1982-08-31 1984-03-09 日本鋼管株式会社 Gutter for air crushed slag production
JPS6140743Y2 (en) * 1982-08-31 1986-11-20
JPS59109737U (en) * 1982-12-29 1984-07-24 日本鋼管株式会社 Gutter equipment for air crushed slag production
JPS60156400U (en) * 1984-03-28 1985-10-18 川崎製鉄株式会社 Water crushing production equipment equipped with slag shell crushing equipment
JPH0220187Y2 (en) * 1984-03-28 1990-06-01

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