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DROSS GENERATION SUPPRESSION METHOD, METAL REFINEMENT METHOD, AND METAL REFINEMENT APPARATUS 新技術説明会

Foreign code F210010276
Posted date 2021年1月27日
Country 世界知的所有権機関(WIPO)
International application number 2020JP017050
International publication number WO2020218237
Date of international filing 令和2年4月20日(2020.4.20)
Date of international publication 令和2年10月29日(2020.10.29)
Priority data
  • 特願2019-082166 (2019.4.23) JP
Title DROSS GENERATION SUPPRESSION METHOD, METAL REFINEMENT METHOD, AND METAL REFINEMENT APPARATUS 新技術説明会
Abstract This dross generation suppression method involves: setting an environmental atmosphere, in which a metal-containing object is placed, to a condition of having a water content less than that of the air environment of the periphery of the environmental atmosphere; and heating and melting the metal-containing object.
Outline of related art and contending technology BACKGROUND ART
In the metal production process, heating and melting and molten metal treatment are performed. In the plating treatment, a plating bath in which a metal is melted is used, and in many cases, the metal is melted when the metal is bonded. Dross is mainly generated at the interface in contact with the atmosphere in the melt when such a melting treatment is performed. The main component of the dross is an oxide of a metal. The molten metal is oxidized at a rate of as many% of the molten amount to form dross (oxide). Dross reduces metal recovery efficiency and has a large environmental load. The inclusion of dross in the product causes troubles. For example, Non-Patent Document 1 describes a method of efficiently separating metal from dross.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • TOHOKU UNIVERSITY
  • Inventor
  • HIRAKI Takehito
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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