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Title:
VERTICAL MICROWAVE SMELTING FURNACE
Document Type and Number:
WIPO Patent Application WO/2010/087464
Kind Code:
A1
Abstract:
A microwave smelting furnace has a starting material feed opening at the top of a vertical furnace body, and a hearth member that can move up and down is provided in a hearth section. A microwave irradiation chamber that connects with the inside of the vertical furnace body is provided surrounding the hearth section. The inner surface of the microwave irradiation chamber is constructed with copper, a copper alloy, or the like that reflects microwaves. A starting material is introduced into the microwave irradiation chamber through an opening between a side section at the lower part of the vertical furnace body and the hearth member and the starting material is irradiated with microwaves (MW) with high efficiency in a concentrated manner inside the microwave irradiation chamber. Thus, iron ores in the heated starting material are reduced by a carbon source, molten pig iron is produced, and the molten pig iron is removed through an output port. Molten pig iron can thus be manufactured with high energy efficiency in lieu of blast furnace ironmaking, and precious metals, etc., can be recovered from so-called urban mines.

Inventors:
NAGATA KAZUHIRO (JP)
SATO MOTOYASU (JP)
Application Number:
PCT/JP2010/051299
Publication Date:
August 05, 2010
Filing Date:
January 31, 2010
Export Citation:
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Assignee:
TOKYO INST TECH (JP)
KEK HIGH ENERGY ACCELERATOR (JP)
NAGATA KAZUHIRO (JP)
SATO MOTOYASU (JP)
International Classes:
C21B11/02; C21B11/10; C22B7/00; C22B9/22; C22B11/02; F27B1/09; F27B1/14; F27D11/12; H05B6/80
Foreign References:
JP2007205639A2007-08-16
JPH06243963A1994-09-02
JPS54159312A1979-12-17
JPS60105195A1985-06-10
JPH11229007A1999-08-24
JPH06116616A1994-04-26
Other References:
KYOSUKE HARA ET AL.: "Micro-ha Kanetsu Renzoku Seijuho no Kaihatsu", CURRENT ADVANCES IN MATERIALS AND PROCESSES, vol. 21, no. 1, 1 March 2008 (2008-03-01), pages 222
See also references of EP 2385146A4
Attorney, Agent or Firm:
FUJIMAKI, MASANORI (JP)
Masanori Fujimaki (JP)
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