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Title:
MATERIAL PURIFICATION METHOD AND DEVICE, MOLTEN METAL HEATING AND RETAINING DEVICE, AND CONTINUOUS PURIFICATION SYSTEM FOR MATERIAL WITH HIGH PURITY
Document Type and Number:
WIPO Patent Application WO/2017/209034
Kind Code:
A1
Abstract:
To provide a material purification method and device which have a high purification efficiency, can suppress splashing of molten material, improve energy costs, and do not have a high degree of mechanization difficulty. The present invention is a material purification method in which a cooling body 2 is immersed in a molten material 6 that is to be purified, said molten material 6 being contained in a molten metal retention container 1, and the cooling body 2 being rotated as crystals of the material are crystallized on a surface of the cooling body 2, wherein the shortest distance L1 in the horizontal direction between the inner periphery surface of the molten metal retention container 1 at the upper surface of the molten metal and the outer periphery surface of the cooling body 2 is at least 150 mm, and the shortest distance L2 in the horizontal direction between the inner periphery surface of the molten metal retention container 1 and the lowest edge of the cooling body 2 is at least 100 mm in the entire region where the molten material 6 is present in molten metal retention container 1.

Inventors:
YOSHIDA KATSUOKI (JP)
HAGIWARA YASUHISA (JP)
OZEKI YUICHIRO (JP)
MAEDA MASAO (JP)
Application Number:
PCT/JP2017/019876
Publication Date:
December 07, 2017
Filing Date:
May 29, 2017
Export Citation:
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Assignee:
SHOWA DENKO KK (JP)
International Classes:
C22B9/02; C22B21/06
Foreign References:
JP2008163420A2008-07-17
JP2001172729A2001-06-26
JP2009024234A2009-02-05
Attorney, Agent or Firm:
SHIMIZU Yoshihito et al. (JP)
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