JPS5678671A - Treatment for making waste containing heavy metal unharmful - Google Patents

Treatment for making waste containing heavy metal unharmful

Info

Publication number
JPS5678671A
JPS5678671A JP15561779A JP15561779A JPS5678671A JP S5678671 A JPS5678671 A JP S5678671A JP 15561779 A JP15561779 A JP 15561779A JP 15561779 A JP15561779 A JP 15561779A JP S5678671 A JPS5678671 A JP S5678671A
Authority
JP
Japan
Prior art keywords
heavy metal
waste
slag
cooling
unharmful
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
JP15561779A
Other languages
Japanese (ja)
Other versions
JPS5760074B2 (en
Inventor
Minoru Yoshida
Susumu Yamaguchi
Yoshihiko Hirano
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 Corp
Original Assignee
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP15561779A priority Critical patent/JPS5678671A/en
Publication of JPS5678671A publication Critical patent/JPS5678671A/en
Publication of JPS5760074B2 publication Critical patent/JPS5760074B2/ja
Granted legal-status Critical Current

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  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE: To make a waste containing heavy metal unharmful and to stabilize the same by mixing waste containing heavy metal into molten slag produced in a process of manufacturing steel and by cooling and solidifying it.
CONSTITUTION: Blast furnace slag and converter slag in molten state are kept at temperatures of higher than 1,000°C required to sinter or vitrify heavy metal and contain many glass forming oxides (e.g. SiO2, P2O5, etc.) and network modified oxides (e.g. CaO, etc.) effective for the fixing of the heavy metal. Then, the waste of the heavy metal is added to and mixed with the slag and, after being sintered or vitrified, solidified by air-cooling, water-cooling, etc. Any form of the waste and any adding and mixing method is applied and it is preferable to add less than about 50pts.wt. waste to 50pts.wt. melted slag. Thus, the heavy metal is made hardly soluble and stabilized.
COPYRIGHT: (C)1981,JPO&Japio
JP15561779A 1979-12-03 1979-12-03 Treatment for making waste containing heavy metal unharmful Granted JPS5678671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15561779A JPS5678671A (en) 1979-12-03 1979-12-03 Treatment for making waste containing heavy metal unharmful

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15561779A JPS5678671A (en) 1979-12-03 1979-12-03 Treatment for making waste containing heavy metal unharmful

Publications (2)

Publication Number Publication Date
JPS5678671A true JPS5678671A (en) 1981-06-27
JPS5760074B2 JPS5760074B2 (en) 1982-12-17

Family

ID=15609918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15561779A Granted JPS5678671A (en) 1979-12-03 1979-12-03 Treatment for making waste containing heavy metal unharmful

Country Status (1)

Country Link
JP (1) JPS5678671A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448981A (en) * 1990-06-15 1992-02-18 Chubu Kohan Kk Method and apparatus for incinerating and melting waste using slag ladle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139504A (en) * 1974-10-02 1976-04-02 Nippon Steel Corp Korodasutono shorihoho
JPS5324001A (en) * 1976-08-13 1978-03-06 Kuraray Co Production of leather like sheet with rich color variation
JPS5329327A (en) * 1976-08-31 1978-03-18 Matsushita Electric Works Ltd Method of producing base plate consisting of inorganic matter
JPS563407A (en) * 1979-06-22 1981-01-14 Zafira France Needle assembly and producing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139504A (en) * 1974-10-02 1976-04-02 Nippon Steel Corp Korodasutono shorihoho
JPS5324001A (en) * 1976-08-13 1978-03-06 Kuraray Co Production of leather like sheet with rich color variation
JPS5329327A (en) * 1976-08-31 1978-03-18 Matsushita Electric Works Ltd Method of producing base plate consisting of inorganic matter
JPS563407A (en) * 1979-06-22 1981-01-14 Zafira France Needle assembly and producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448981A (en) * 1990-06-15 1992-02-18 Chubu Kohan Kk Method and apparatus for incinerating and melting waste using slag ladle

Also Published As

Publication number Publication date
JPS5760074B2 (en) 1982-12-17

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