GB554290A - Improvements in or relating to cyanide processes for the recovery of metals - Google Patents

Improvements in or relating to cyanide processes for the recovery of metals

Info

Publication number
GB554290A
GB554290A GB10950/42A GB1095042A GB554290A GB 554290 A GB554290 A GB 554290A GB 10950/42 A GB10950/42 A GB 10950/42A GB 1095042 A GB1095042 A GB 1095042A GB 554290 A GB554290 A GB 554290A
Authority
GB
United Kingdom
Prior art keywords
metals
relating
recovery
aug
solution
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.)
Expired
Application number
GB10950/42A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB554290A publication Critical patent/GB554290A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/08—Obtaining noble metals by cyaniding

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

554,290. Extracting metals. AMERICAN CYANAMID CO. Aug. 5, 1942, No. 10950. Convention date, Aug. 15, 1941. [Class 82 (i)] The precipitation of undesired salts in cyanide processes is prevented by incorporating in the solution a small amount of a soluble metaphosphate or polyphosphate, which may be a hexametaphosphate, or a pyrophosphate, or a salt of sodium, potassium, ammonium, or an organic base. The presence of the required phosphate in the solution may be ensured by the addition of metaphosphoric acid.
GB10950/42A 1941-08-15 1942-08-05 Improvements in or relating to cyanide processes for the recovery of metals Expired GB554290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554290XA 1941-08-15 1941-08-15

Publications (1)

Publication Number Publication Date
GB554290A true GB554290A (en) 1943-06-28

Family

ID=21997729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10950/42A Expired GB554290A (en) 1941-08-15 1942-08-05 Improvements in or relating to cyanide processes for the recovery of metals

Country Status (1)

Country Link
GB (1) GB554290A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884322A (en) * 1957-01-22 1959-04-28 American Cyanamid Co Extraction of cyanidable precious metals from carbonaceous ores
US5916534A (en) * 1994-04-20 1999-06-29 Butler; Dean Noble metal recovery using selected base metal solubilizing agents at low pulp densities

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884322A (en) * 1957-01-22 1959-04-28 American Cyanamid Co Extraction of cyanidable precious metals from carbonaceous ores
US5916534A (en) * 1994-04-20 1999-06-29 Butler; Dean Noble metal recovery using selected base metal solubilizing agents at low pulp densities

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