Title:
METHOD FOR RECOVERING VALUABLE MATTER FROM SCRAP ALLOY
Document Type and Number:
Japanese Patent JPS6230826
Kind Code:
A
Abstract:
PURPOSE: To inhibit the corrosion of an device and the worsening of work environment to the minimum extent by dissolving a crushed scrap alloy in an alkali metallic hydroxide soln., oxidizing the resulting soln. and recovering a part of the constituent metallic elements of the alloy as metal.
CONSTITUTION: A crushed scrap Se-As alloy consisting of ≤40wt% As and the balance essentially Se is dissolved in a sodium hydroxide soln. A gaseous mixture of an inert gas with a preferably one of air, oxygen or ozone is used as an oxidizing agent and blown into the resulting soln. Metallic Se is precipitated by an oxidation reaction at 5W70°C, preferably 20W40°C, separated from As by filtration and recovered.
Inventors:
UEHARA KIYOTOKI
IWASAKI NOBUO
INOUE SHIGETO
AKASHI ITSUJI
DEGUCHI TOMOYUKI
IWASAKI NOBUO
INOUE SHIGETO
AKASHI ITSUJI
DEGUCHI TOMOYUKI
Application Number:
JP17073785A
Publication Date:
February 09, 1987
Filing Date:
August 02, 1985
Export Citation:
Assignee:
SHINKO CHEM
International Classes:
C01B19/02; C22B7/00; C22B30/04; (IPC1-7): C01B19/02; C22B7/00; C22B30/04
Attorney, Agent or Firm:
Yamada Masakuni