Title:
【発明の名称】フッ化物含有鉱石からのセリウムの回収
Document Type and Number:
Japanese Patent JPH08508543
Kind Code:
A
Abstract:
Recovery of cerium values from fluoride-containing ores such as bastnasite is enhanced. The ore is ground, roasted, and leached with dilute hydrochloric acid to produce an ore concentrate. The concentrate is treated with a solution of hydrochloric acid and boric acid to solubilize cerium values and convert fluoride to tetrafluoroborate ion. Tetrafluoroborate is removed from the solution, e.g., by precipitation, and the solution is further processed for recovery of cerium values. Removal of tetrafluoroborate avoids loss of cerium as insoluble cerium tetrafluoroborate during said further processing.
Inventors:
BOSSERMAN PAULA J (US)
Application Number:
JP52199894A
Publication Date:
September 10, 1996
Filing Date:
March 29, 1993
Export Citation:
Assignee:
UNION OIL CO (US)
International Classes:
C01F17/00; C22B3/06; C22B3/10; C22B3/44; C22B59/00; (IPC1-7): C22B59/00; C01F17/00
Attorney, Agent or Firm:
Yasuo Ishikawa