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RU2002100624A - The method of refining chromium or ferrochrome from nitrogen - Google Patents

The method of refining chromium or ferrochrome from nitrogen

Info

Publication number
RU2002100624A
RU2002100624A RU2002100624/02A RU2002100624A RU2002100624A RU 2002100624 A RU2002100624 A RU 2002100624A RU 2002100624/02 A RU2002100624/02 A RU 2002100624/02A RU 2002100624 A RU2002100624 A RU 2002100624A RU 2002100624 A RU2002100624 A RU 2002100624A
Authority
RU
Russia
Prior art keywords
ferrochrome
chromium
nitrogen
refining
refining chromium
Prior art date
Application number
RU2002100624/02A
Other languages
Russian (ru)
Other versions
RU2214471C2 (en
Inventor
Валерий Леонидович Кузнецов
Валерий Иванович Хяккинен
Анатолий Николаевич Учаев
Original Assignee
Общество с ограниченной ответственностью "Спецферросплав"
Filing date
Publication date
Application filed by Общество с ограниченной ответственностью "Спецферросплав" filed Critical Общество с ограниченной ответственностью "Спецферросплав"
Priority to RU2002100624A priority Critical patent/RU2214471C2/en
Priority claimed from RU2002100624A external-priority patent/RU2214471C2/en
Publication of RU2002100624A publication Critical patent/RU2002100624A/en
Application granted granted Critical
Publication of RU2214471C2 publication Critical patent/RU2214471C2/en

Links

Claims (2)

1. Способ рафинирования хрома или феррохрома от азота, включающий измельчение хрома или феррохрома и термообработку в вакууме, отличающийся тем, что термообработку хрома или феррохрома проводят при разряжении вакуума 70,00-0,13 Па, температуре 1050-1250°С и его измельчении до размеров не более 1,5 мм при содержании фракций 0,5-1,5 мм в количестве не менее 80%.1. The method of refining chromium or ferrochrome from nitrogen, including grinding chromium or ferrochrome and heat treatment in vacuum, characterized in that the heat treatment of chromium or ferrochrome is carried out by vacuum discharge of 70.00-0.13 Pa, a temperature of 1050-1250 ° C and grinding to sizes not more than 1.5 mm with a content of fractions of 0.5-1.5 mm in an amount of not less than 80%. 2. Способ рафинирования хрома или феррохрома от азота по п.1, отличающийся тем, что перед термообработкой в вакууме измельченный хром или феррохром брикетируют.2. The method of refining chromium or ferrochrome from nitrogen according to claim 1, characterized in that prior to heat treatment in vacuum, crushed chromium or ferrochrome is briquetted.
RU2002100624A 2002-01-03 2002-01-03 Method of refining chromium or ferrochromium from nitrogen RU2214471C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2002100624A RU2214471C2 (en) 2002-01-03 2002-01-03 Method of refining chromium or ferrochromium from nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2002100624A RU2214471C2 (en) 2002-01-03 2002-01-03 Method of refining chromium or ferrochromium from nitrogen

Publications (2)

Publication Number Publication Date
RU2002100624A true RU2002100624A (en) 2003-08-20
RU2214471C2 RU2214471C2 (en) 2003-10-20

Family

ID=31988678

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2002100624A RU2214471C2 (en) 2002-01-03 2002-01-03 Method of refining chromium or ferrochromium from nitrogen

Country Status (1)

Country Link
RU (1) RU2214471C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9771634B2 (en) 2014-11-05 2017-09-26 Companhia Brasileira De Metalurgia E Mineração Processes for producing low nitrogen essentially nitride-free chromium and chromium plus niobium-containing nickel-based alloys and the resulting chromium and nickel-based alloys
US10041146B2 (en) 2014-11-05 2018-08-07 Companhia Brasileira de Metalurgia e Mineraçäo Processes for producing low nitrogen metallic chromium and chromium-containing alloys and the resulting products

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