Title:
スポンジ白金の脱酸素方法及び前記方法に使用する水素還元炉及びスポンジ白金の粉砕方法
Document Type and Number:
Japanese Patent JP4604221
Kind Code:
B2
Abstract:
To provide an apparatus and a method for deoxidizing sponge platinum by which sponge platinum composed of platinum of ≤2 mm grain size, minimal in an undissolved residue at aqua regia dissolution and increased in dissolution rate can be efficiently and safely produced.
In the method for deoxidizing the sponge platinum, the platinum is previously ground coarsely at the removal of oxygen from the sponge platinum and held at 600 to 800°C in a hydrogen reduction furnace to improve dissolution rate at the aqua regia dissolution of the recovered sponge platinum and decrease the undissolved residue at the aqua regia dissolution.
COPYRIGHT: (C)2006,JPO&NCIPI
Inventors:
Koji Sakaki
Hidenori Okamoto
Kazuaki Takebayashi
Hidenori Okamoto
Kazuaki Takebayashi
Application Number:
JP2004277128A
Publication Date:
January 05, 2011
Filing Date:
September 24, 2004
Export Citation:
Assignee:
jx Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/02; C22B9/05; F27D7/02; F27D7/06; F27D21/00
Domestic Patent References:
| JP2001181749A | ||||
| JP2002180140A | ||||
| JP11211350A |