Global Patent Index - EP 0974680 A1

EP 0974680 A1 2000-01-26 - Process for the electrolytic production of cyanide in nitrocarburizing molten baths

Title (en)

Process for the electrolytic production of cyanide in nitrocarburizing molten baths

Title (de)

Verfahren zur elektrolytischen Erzeugung von Cyanid in Nitrocarburierschmelzen

Title (fr)

Procédé de production de cyanure dans des bains fondus de nitrocarburation

Publication

EP 0974680 A1 (DE)

Application

EP 99112333 A

Priority

DE 19832404 A

Abstract (en)

[origin: DE19832404C1] Cyanide is produced from nitrocarburised melts containing cyanate by electrolyzing the melt.

Abstract (de)

Zur Verkürzung der Wartezeiten bis zur Einstellung des Gleichgewichtes zwischen Cyanat und Cyanid und zur Einschränkung der Verwendung cyanidhaltiger Stoffe und Produkte für die Nitrocarburierung in Salzschmelzen werden Schmelzen, die nur Cyanat und gegebenenfalls Carbonat enthalten, mit einer Stromdichte von 4 bis 100 A/dm<2>-Elektrodenfläche zur Bildung eines vorteilhaften Cyanidgehaltes von 1 bis 5 Gew.% elektrolysiert.

IPC 1-7 (main, further and additional classification)

C23C 8/54

IPC 8 full level (invention and additional information)

C23C 8/54 (2006.01); C25B 1/00 (2006.01); C25B 11/10 (2006.01)

CPC (invention and additional information)

C23C 8/54 (2013.01); C25B 1/00 (2013.01)

Citation (search report)

  • [X] FR 2708623 A1 19950210 - STEPHANOIS RECH MEC [FR]
  • [A] DE 1255438 B 19671130 - DEGUSSA
  • [A] KOSHELEV A T: "INTENSIFICATION OF THE CARBONITRIDING PROCESS WITH THE AID OF DC", METAL SCIENCE AND HEAT TREATMENT, vol. 32, no. 11 / 12, 1 November 1990 (1990-11-01), pages 918 - 921, XP000261572, ISSN: 0026-0673

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

EPO simple patent family

DE 19832404 C1 19991021; AT 225869 T 20021015; BR 9902971 A 20000425; CA 2277495 A1 20000118; EP 0974680 A1 20000126; EP 0974680 B1 20021009; ES 2183462 T3 20030316; JP 2000054109 A 20000222; TR 9901661 A2 20000221; US 6159355 A 20001212; ZA 9904621 B 20000114

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- Inventor name: BAUDIS, ULRICH, DR.

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- Inventor name: DOOSE, MANDY

2000-02-16 [RIN1] INVENTOR (CORRECTION)

- Inventor name: PRIETZEL, KARL-OTTO, PROF.

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