JPS5528323A - Zinc removing method for blast furnace dust - Google Patents

Zinc removing method for blast furnace dust

Info

Publication number
JPS5528323A
JPS5528323A JP9997478A JP9997478A JPS5528323A JP S5528323 A JPS5528323 A JP S5528323A JP 9997478 A JP9997478 A JP 9997478A JP 9997478 A JP9997478 A JP 9997478A JP S5528323 A JPS5528323 A JP S5528323A
Authority
JP
Japan
Prior art keywords
slurry
vessel
adjusted
low
blast furnace
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
JP9997478A
Other languages
Japanese (ja)
Other versions
JPS5743138B2 (en
Inventor
Shigenori Uno
Masaru Omizu
Yukio Umetsu
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 JP9997478A priority Critical patent/JPS5528323A/en
Publication of JPS5528323A publication Critical patent/JPS5528323A/en
Publication of JPS5743138B2 publication Critical patent/JPS5743138B2/ja
Granted 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

PURPOSE: To effectively utilize the residue of blast furnace dust as sintering raw material by adjusting a slurry of the dust to a weakly alkaline pH range; separating the adjusted slurry into flows of high and low Zn contents; dehydrating the low Zn slurry; and acidifying the resulting cake to extraction-separate Zn.
CONSTITUTION: Blast furnace gas washing waste water 1 is adjusted to pH 7W8 with NaOH in pretreatment vessel 2 to deposit dissolved Zn ions. This suspension is fed to settling concn. vessel 3, and the resulting conc. slurry is introduced into wet cyclone 6 through concn. regulation vessel 5 and separated into fine grain overflow 12 of high Zn content and coarse grain underflow 7 of low Zn content. Underflow 7 is fed to dissolution vessel 8, where it is adjusted to pH 4W6 with sulfuric acid, hydrochloric acid or the like to dissolve residual Zn, and underflow 7 is dehydrated with dehydrator 9 to recover extraction residue B1 of low Zn content as sintering raw material. Filtrate 10 is fed to neutralization vessel 11 and adjusted to pH 7W8 to deposit Zn. This slurry is joined with overflow 12 and concn.-dehydrated to recover a Zn-contg. cake.
COPYRIGHT: (C)1980,JPO&Japio
JP9997478A 1978-08-18 1978-08-18 Zinc removing method for blast furnace dust Granted JPS5528323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9997478A JPS5528323A (en) 1978-08-18 1978-08-18 Zinc removing method for blast furnace dust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9997478A JPS5528323A (en) 1978-08-18 1978-08-18 Zinc removing method for blast furnace dust

Publications (2)

Publication Number Publication Date
JPS5528323A true JPS5528323A (en) 1980-02-28
JPS5743138B2 JPS5743138B2 (en) 1982-09-13

Family

ID=14261628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9997478A Granted JPS5528323A (en) 1978-08-18 1978-08-18 Zinc removing method for blast furnace dust

Country Status (1)

Country Link
JP (1) JPS5528323A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941408A (en) * 1982-05-04 1984-03-07 ホ−ゴベンス・グル−プ・ベ−・ブイ Method and device for treating blast furnace gas
WO1995018871A1 (en) * 1994-01-06 1995-07-13 Bethlehem Steel Corporation Method and system for removing and/or causing recycling of materials
KR100391571B1 (en) * 2000-12-29 2003-07-12 주식회사 포스코건설 Zn-separating apparatus from sludge of blast furnace
KR20040020380A (en) * 2002-08-30 2004-03-09 주식회사 포스코 Sludge separation method of furnace gas
KR100477094B1 (en) * 2000-12-12 2005-03-17 주식회사 포스코 Apparatus for treating high zinc sludge for the blast furnace

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941408A (en) * 1982-05-04 1984-03-07 ホ−ゴベンス・グル−プ・ベ−・ブイ Method and device for treating blast furnace gas
JPS6318653B2 (en) * 1982-05-04 1988-04-19 Hoogovens Groep Bv
WO1995018871A1 (en) * 1994-01-06 1995-07-13 Bethlehem Steel Corporation Method and system for removing and/or causing recycling of materials
US5435835A (en) * 1994-01-06 1995-07-25 Bethlehem Steel Corporation Method and system for removing and/or causing recycling of materials
KR100477094B1 (en) * 2000-12-12 2005-03-17 주식회사 포스코 Apparatus for treating high zinc sludge for the blast furnace
KR100391571B1 (en) * 2000-12-29 2003-07-12 주식회사 포스코건설 Zn-separating apparatus from sludge of blast furnace
KR20040020380A (en) * 2002-08-30 2004-03-09 주식회사 포스코 Sludge separation method of furnace gas

Also Published As

Publication number Publication date
JPS5743138B2 (en) 1982-09-13

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