Invention Grant
- Patent Title: Granulation method using an underwater cutting (UWC) device
- Patent Title (中): 使用水下切割(UWC)装置的造粒方法
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Application No.: US13697634Application Date: 2011-05-12
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Publication No.: US09248585B2Publication Date: 2016-02-02
- Inventor: Seiji Takamoto , Fumio Kobayashi , Reo Fujita , Shigeki Inoue , Junichi Iwai
- Applicant: Seiji Takamoto , Fumio Kobayashi , Reo Fujita , Shigeki Inoue , Junichi Iwai
- Applicant Address: JP Tokyo
- Assignee: THE JAPAN STEEL WORKS, LTD.
- Current Assignee: THE JAPAN STEEL WORKS, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2010-111657 20100514
- International Application: PCT/JP2011/060991 WO 20110512
- International Announcement: WO2011/142434 WO 20111117
- Main IPC: B29C47/78
- IPC: B29C47/78 ; B29B9/06 ; B01J2/20 ; B29C47/60 ; B29C47/92 ; B29C47/00 ; B29C47/08 ; B29C47/30 ; B29C47/36 ; B29C47/68 ; B29C47/76 ; B29C47/86

Abstract:
An object of the invention is to provide a granulation method and a granulation apparatus that can reduce the manufacturing costs of pellets. There is provided a granulation method which uses an underwater cutting (UWC) device 107 that cuts a medium to be processed extruded from holes of a die 106 by using cutter blades provided in a circulation box 109 and conveys the cut pellets from the circulation box 109 while cooling the cut pellets by pellet cooling/transport water (PCW). The granulation method includes circulating the PCW and stopping the circulation of the PCW after pushing the cutter blades against the die 106 while rotating the cutter blades, before the start of the granulation; storing a predetermined amount of PCW in the circulation box 109 by discharging the PCW; and heating the PCW, which is stored in the circulation box 109, up to 69° C. or more.
Public/Granted literature
- US20130062804A1 GRANULATION METHOD AND GRANULATION APPARATUS Public/Granted day:2013-03-14
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