JPS5252176A - Method of making cr sludge harmless - Google Patents

Method of making cr sludge harmless

Info

Publication number
JPS5252176A
JPS5252176A JP50127984A JP12798475A JPS5252176A JP S5252176 A JPS5252176 A JP S5252176A JP 50127984 A JP50127984 A JP 50127984A JP 12798475 A JP12798475 A JP 12798475A JP S5252176 A JPS5252176 A JP S5252176A
Authority
JP
Japan
Prior art keywords
making
sludge
sludge harmless
harmless
trivalent
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
JP50127984A
Other languages
Japanese (ja)
Inventor
Kenjiro Takeshita
Isao Mochida
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP50127984A priority Critical patent/JPS5252176A/en
Publication of JPS5252176A publication Critical patent/JPS5252176A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Extinguishing Compositions (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: Cr sludge is mixed with at least one selected from charcoal, coke, S, etc. and burnt at above 500°C in the absence of air to reduce to trivalent Cr, the surface of the sludge is coated with a hard carbon material, and Cr compounds are reduced to Cr carbide or metallic Cr.
COPYRIGHT: (C)1977,JPO&Japio
JP50127984A 1975-10-24 1975-10-24 Method of making cr sludge harmless Pending JPS5252176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50127984A JPS5252176A (en) 1975-10-24 1975-10-24 Method of making cr sludge harmless

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50127984A JPS5252176A (en) 1975-10-24 1975-10-24 Method of making cr sludge harmless

Publications (1)

Publication Number Publication Date
JPS5252176A true JPS5252176A (en) 1977-04-26

Family

ID=14973557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50127984A Pending JPS5252176A (en) 1975-10-24 1975-10-24 Method of making cr sludge harmless

Country Status (1)

Country Link
JP (1) JPS5252176A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972301A (en) * 1996-06-04 1999-10-26 The United States Of America As Represented By The Environmental Protection Agency Minimizing emission of hexavalent chromium from combustion sources
JP2005305354A (en) * 2004-04-23 2005-11-04 Penta Ocean Constr Co Ltd Detoxification treatment method for contaminants, detoxification treatment system and method for recycling fired products
JP2016054948A (en) * 2014-09-10 2016-04-21 昭和電工株式会社 Method for treating hexavalent chromium-containing material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972301A (en) * 1996-06-04 1999-10-26 The United States Of America As Represented By The Environmental Protection Agency Minimizing emission of hexavalent chromium from combustion sources
JP2005305354A (en) * 2004-04-23 2005-11-04 Penta Ocean Constr Co Ltd Detoxification treatment method for contaminants, detoxification treatment system and method for recycling fired products
JP2016054948A (en) * 2014-09-10 2016-04-21 昭和電工株式会社 Method for treating hexavalent chromium-containing material

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