Title:
AUTOCLAVE APPARATUS USED DURING HIGH-PRESSURE ACID LEACHING PROCESS
Document Type and Number:
WIPO Patent Application WO/2013/191020
Kind Code:
A1
Abstract:
The purpose of the present invention is to facilitate mixing of a raw material slurry with a sulfuric acid during a high-pressure acid leaching process in order to reduce a management value of a discharged free fluoric acid concentration. This autoclave apparatus (100) is to be used during a high-pressure acid leaching process wherein the leaching progresses by agitating a raw material slurry and a fluoric acid, which have been heated and pressurized, by using agitators (30A, 30B, … 30G) that are installed inside multiple compartments (20A, 20B, … 20G) of an autoclave body (110), which has been compartmentalized with partitions (10A, 10B, … 10F), and the slurry is transferred from upstream compartments to downstream compartments so that the leaching progresses in sequence. The partitions (10A, 10B, … 10F) are respectively provided with a slurry transfer flow port (52A, 52B, … 52F) that can be opened/closed by means of a slurry transfer flow port door. The slurry transfer flow ports (52A, 52B, … 52F) are positioned such that the heights between the lowest part of the autoclave and the centroids of the slurry transfer flow port doors are 0.1 - 0.3 times the diameter of the autoclave and the distances between central lines of the partitions and the centroids of the slurry transfer flow port doors are 0.05 - 0.25 times the diameter of the autoclave, and are shaped so as not to reach an edge of any partition.
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Inventors:
MATSUBARA SATOSHI (JP)
NAKAI OSAMU (JP)
KYOUDA YOUJI (JP)
SAKAMOTO TAKASHI (JP)
ISHIKAWA HARUO (JP)
MAKI KOICHIRO (JP)
NAKAI OSAMU (JP)
KYOUDA YOUJI (JP)
SAKAMOTO TAKASHI (JP)
ISHIKAWA HARUO (JP)
MAKI KOICHIRO (JP)
Application Number:
PCT/JP2013/065959
Publication Date:
December 27, 2013
Filing Date:
June 10, 2013
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
MATSUBARA SATOSHI (JP)
NAKAI OSAMU (JP)
KYOUDA YOUJI (JP)
SAKAMOTO TAKASHI (JP)
ISHIKAWA HARUO (JP)
MAKI KOICHIRO (JP)
MATSUBARA SATOSHI (JP)
NAKAI OSAMU (JP)
KYOUDA YOUJI (JP)
SAKAMOTO TAKASHI (JP)
ISHIKAWA HARUO (JP)
MAKI KOICHIRO (JP)
International Classes:
C22B23/00; B01D11/02; B01F27/91; B01J3/02; C22B3/04
Foreign References:
JP2011241446A | 2011-12-01 | |||
JP2009530077A | 2009-08-27 | |||
JP2005350766A | 2005-12-22 | |||
JP2003082420A | 2003-03-19 | |||
JPH0784623B2 | 1995-09-13 | |||
JP2009515044A | 2009-04-09 |
Other References:
See also references of EP 2862951A4
Attorney, Agent or Firm:
KOIKE, Akira et al. (JP)
Akira Koike (JP)
Akira Koike (JP)
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