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JPS54136596A - Granular substance manufactured by refining converter slag and manufacture thereof - Google Patents

Granular substance manufactured by refining converter slag and manufacture thereof

Info

Publication number
JPS54136596A
JPS54136596A JP4512478A JP4512478A JPS54136596A JP S54136596 A JPS54136596 A JP S54136596A JP 4512478 A JP4512478 A JP 4512478A JP 4512478 A JP4512478 A JP 4512478A JP S54136596 A JPS54136596 A JP S54136596A
Authority
JP
Japan
Prior art keywords
slag
granular substance
diameter
manufacture
air jet
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
JP4512478A
Other languages
Japanese (ja)
Inventor
Kiyomi Taguchi
Yoshio Miyashita
Shigeyuki Ono
Joji Ando
Takafumi Nakahara
Tatsuro Usuda
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.)
Mitsubishi Heavy Industries Ltd
JFE Engineering Corp
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd, NKK Corp, Nippon Kokan Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP4512478A priority Critical patent/JPS54136596A/en
Publication of JPS54136596A publication Critical patent/JPS54136596A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: To manufacture a granular substance which hardly undergoes slaking disintegration and has various uses such as civil engineering and construction by spouting a high-speed air jet upon molten converter slag in the vicinity of a slag outflow part so that the diameter of the resulting granular substance and the oxidation rate of the slag are regulated to below and above a specific value, respectively.
CONSTITUTION: Molten converter slag 3 is dropped from ladle 2 optionally through channel 2, and high-speed air jet 5 is sprayed upon the dropping slag from air nozzle 4. Thus, the molten slag is spheroidized by surface tension, solidified by cooling from the surface, and turned to a granular substance at dropping point 5. At this time, air jet 5 is so spouted that the diameter of the granular substance is regulated to below about 2 mm and the oxidation rate of the slag above 70%. In order to regulate the diameter, etc., the ratio of air flow rate and slag wt. is set to 400W6200 Nm3/T and the speed of flowing air to 80W300 m/s. Thus, esp. slakable CaO in Ca solid soln. in the slag is fixed as dicalcium ferrite (2CaO.Fe2O3) with Fe2O3 formed to be protected from slaking.
COPYRIGHT: (C)1979,JPO&Japio
JP4512478A 1978-04-17 1978-04-17 Granular substance manufactured by refining converter slag and manufacture thereof Pending JPS54136596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4512478A JPS54136596A (en) 1978-04-17 1978-04-17 Granular substance manufactured by refining converter slag and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4512478A JPS54136596A (en) 1978-04-17 1978-04-17 Granular substance manufactured by refining converter slag and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS54136596A true JPS54136596A (en) 1979-10-23

Family

ID=12710509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4512478A Pending JPS54136596A (en) 1978-04-17 1978-04-17 Granular substance manufactured by refining converter slag and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS54136596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002974A1 (en) * 1991-08-07 1993-02-18 Litovitz, Theodore, A. Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160686A (en) * 1974-11-26 1976-05-26 Nippon Steel Corp Tenroryusaino seizohoho oyobi sochi
JPS5311920A (en) * 1976-07-20 1978-02-02 Nippon Steel Corp Blast furnace granulated slag production process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160686A (en) * 1974-11-26 1976-05-26 Nippon Steel Corp Tenroryusaino seizohoho oyobi sochi
JPS5311920A (en) * 1976-07-20 1978-02-02 Nippon Steel Corp Blast furnace granulated slag production process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002974A1 (en) * 1991-08-07 1993-02-18 Litovitz, Theodore, A. Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste
US5340372A (en) * 1991-08-07 1994-08-23 Pedro Buarque de Macedo Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste

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