JPS56163204A - Gelation method for blast furnace slag - Google Patents

Gelation method for blast furnace slag

Info

Publication number
JPS56163204A
JPS56163204A JP6398980A JP6398980A JPS56163204A JP S56163204 A JPS56163204 A JP S56163204A JP 6398980 A JP6398980 A JP 6398980A JP 6398980 A JP6398980 A JP 6398980A JP S56163204 A JPS56163204 A JP S56163204A
Authority
JP
Japan
Prior art keywords
blast furnace
furnace slag
slag
mineral acid
added
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
JP6398980A
Other languages
Japanese (ja)
Inventor
Izumi Kadona
Hideyuki Tokumaru
Masaaki Tadokoro
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 Chemical and Materials Co Ltd
Original Assignee
Nippon Steel Chemical Co 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 Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Chemical Co Ltd
Priority to JP6398980A priority Critical patent/JPS56163204A/en
Publication of JPS56163204A publication Critical patent/JPS56163204A/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
    • 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
    • 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

Abstract

PURPOSE:To obtain a lightweight material which is higher in the rate of swelling than that by conventional methods, that is, which is made further lighter in weight, by gelating blast furnace slag with mineral acids and alkali materials. CONSTITUTION:Blast furnace slag, more preferably quickly cooled blast furnace slag (blast furnace granuated slag and air blast slag) is ground to about 2,000- 6,000cm<2>/g Blaine's specific surface areas. Water is then added to this blast furnace slag to prepare a slurry of about 2-10%, after which a mineral acid such as sulfuric acid, a hydrochloric acid or the like is added with stirring for 1-2min, whereby it is swollen to about 5 times the original volume (in the case of a sulfuric acid.) The amount of addition of the mineral acid of this case is preferably 30-150pts.wt. based on 100pts.wt. of the blast furnace slag. An alkali material (e.g.; slaked lime) is then added to the product of reaction with the mineral acid at about 0-150 pts.wt. based on 100pts.wt. of the blast furnace slag and the mixture is stirred at 20-80 deg.C, to allow gelation to complete. As a result, the gel-like light-weight material having the rate of swelling about 14 times that of the product of reaction with the mineral acid is obtained.
JP6398980A 1980-05-16 1980-05-16 Gelation method for blast furnace slag Pending JPS56163204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6398980A JPS56163204A (en) 1980-05-16 1980-05-16 Gelation method for blast furnace slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6398980A JPS56163204A (en) 1980-05-16 1980-05-16 Gelation method for blast furnace slag

Publications (1)

Publication Number Publication Date
JPS56163204A true JPS56163204A (en) 1981-12-15

Family

ID=13245194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6398980A Pending JPS56163204A (en) 1980-05-16 1980-05-16 Gelation method for blast furnace slag

Country Status (1)

Country Link
JP (1) JPS56163204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465518A (en) * 1982-06-14 1984-08-14 Chiyoda Chemical Engineering & Const. Co. Process for strengthening soft soil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465518A (en) * 1982-06-14 1984-08-14 Chiyoda Chemical Engineering & Const. Co. Process for strengthening soft soil

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