KR960007450A - How to Treat Phosphate Sludge - Google Patents

How to Treat Phosphate Sludge Download PDF

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Publication number
KR960007450A
KR960007450A KR1019950024457A KR19950024457A KR960007450A KR 960007450 A KR960007450 A KR 960007450A KR 1019950024457 A KR1019950024457 A KR 1019950024457A KR 19950024457 A KR19950024457 A KR 19950024457A KR 960007450 A KR960007450 A KR 960007450A
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KR
South Korea
Prior art keywords
phosphate
precipitate
sludge
phosphate sludge
insoluble basic
Prior art date
Application number
KR1019950024457A
Other languages
Korean (ko)
Other versions
KR0168498B1 (en
Inventor
히로끼 다구찌
류지 고지마
Original Assignee
사또미 유따까
니혼파커라이징 가부시끼가이샤
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Application filed by 사또미 유따까, 니혼파커라이징 가부시끼가이샤 filed Critical 사또미 유따까
Publication of KR960007450A publication Critical patent/KR960007450A/en
Application granted granted Critical
Publication of KR0168498B1 publication Critical patent/KR0168498B1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/86—Regeneration of coating baths

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Treatment Of Sludge (AREA)

Abstract

산업 폐기물의 재생이용으로써, 금속 물질을 위한 인산염 전환 코팅 처리에서 발생되는 50중량% 이하의 인산염 슬러지를 함유하며 pH 7 미만의 인산염 슬러지 함유 수성 슬러리 및 철 성분을 모두 밀폐 압력 용기에 충진하고, 가압력하에 내용물에 대하여 열처리를 수행하며, 이어서 침전물을 함유하는 생성물을 여과하고, 침전물로써 불용성 염기성 인산철을 회수하는 것을 포함하는 인산염 슬러지의 처리 방법이 제공된다. 환경 오염에 문제를 일으키지 않는 불용성 염기성 인산철이 회수될 수 있다.Recycling of industrial wastes, containing up to 50% by weight of phosphate sludge from the phosphate conversion coating process for metal materials and containing all of the aqueous slurry and iron components containing phosphate sludge below pH 7 in a closed pressure vessel, A process for treating phosphate sludge is provided, which comprises conducting a heat treatment on the contents, followed by filtering the product containing the precipitate and recovering insoluble basic iron phosphate as the precipitate. Insoluble basic iron phosphate may be recovered which does not cause environmental pollution.

Description

인산염 슬러지 처리 방법How to Treat Phosphate Sludge

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 인산염 슬러지 처리 단계의 개략도이다.1 is a schematic of the phosphate sludge treatment step.

Claims (2)

금속 물질을 위한 인산염 전환 코팅 처리에서 발생되는 pH 7 미만의 인산염 슬러지 함유 수성 슬러리 및 철 성분을 모두 밀폐 압력 용기에 충진하고, 가압력하에 내용물에 대하여 열처리를 수행하며, 이어서 침전물을 함유하는 생성물을 여과하고, 침전물로써 불용성 염기성 인산철을 회수하는 것을 포함하는 인산염 슬러지의 처리 방법.The aqueous slurry containing less than pH 7 phosphate sludge and the iron component generated in the phosphate conversion coating treatment for the metal material were filled in a closed pressure vessel, heat treated the contents under pressure, and then the product containing the precipitate was filtered. And recovering the insoluble basic iron phosphate as a precipitate. 금속 물질을 위한 인산염 전환 코팅 처리에서 발생되는 50중량% 이하의 인산염 슬러지를 함유하며 pH 7 미만의 인산염 슬러지 함유 수성 슬러리 및 철 성분을 모두 밀폐 압력 용기에 충진하고, 2시간 이상 동안 4㎏/㎤G 이상의 압력하에 150℃ 이상의 온도에서 내용물에 대하여 열처리를 수행하며, 이어서, 침전물을 함유하는 생성물을 여과하고, 침전물로써 불용성 염기성 인산철을 회수하는 것을 포함하는 인산염 슬러지의 처리 방법.An aqueous slurry containing up to 50% by weight of phosphate sludge resulting from the phosphate conversion coating treatment for metal materials and an iron component containing phosphate sludge below pH 7 is filled in a closed pressure vessel and 4 kg / cm 3 for at least 2 hours. Performing a heat treatment on the contents at a temperature of at least 150 ° C. under a pressure of at least G, followed by filtration of the product containing the precipitate and recovering the insoluble basic iron phosphate as the precipitate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950024457A 1994-08-09 1995-08-08 Treatment of phosphate sludge KR0168498B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP94-208086 1994-08-09
JP20808694A JPH0853771A (en) 1994-08-09 1994-08-09 Treatment of phosphate sludge

Publications (2)

Publication Number Publication Date
KR960007450A true KR960007450A (en) 1996-03-22
KR0168498B1 KR0168498B1 (en) 1999-01-15

Family

ID=16550413

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950024457A KR0168498B1 (en) 1994-08-09 1995-08-08 Treatment of phosphate sludge

Country Status (3)

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JP (1) JPH0853771A (en)
KR (1) KR0168498B1 (en)
CN (1) CN1126175A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001198546A (en) * 2000-01-19 2001-07-24 Sanki Eng Co Ltd Process for recovering phosphorus from sewage sludge or sewage sludge incineration ash
KR100499546B1 (en) * 2002-10-10 2005-07-05 가부시키가이샤 고베 세이코쇼 Method of treating aluminium alloy molten metal and flux used therefor
KR100823997B1 (en) * 2006-05-26 2008-04-23 평화오일씰공업주식회사 Process for phosphating metal parts
CN111924819B (en) * 2020-07-03 2022-04-29 山东毅聪新能源有限公司 Method for recycling waste disassembled lithium iron phosphate cathode material

Also Published As

Publication number Publication date
CN1126175A (en) 1996-07-10
KR0168498B1 (en) 1999-01-15
JPH0853771A (en) 1996-02-27

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