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Title:
ELECTRIC ORE HEATING FURNACE WITH NO BRANCH CURRENT BETWEEN ELECTRODES
Document Type and Number:
WIPO Patent Application WO/2019/052499
Kind Code:
A1
Abstract:
An electric ore heating furnace with no branch current between electrodes is a combination of a plurality of independent hearths (2) and furnace housings (3). Each independent hearth (2) has a one-phase electrode (1). The number of electrodes (1) of each phase may be one or multiple. A sufficient cooling distance between the furnace housings (3) of the independent hearths is ensured. The furnace housings (3) are insulated from a common furnace bottom (9). A smelting current between the independent hearths (2) is conducted only from the furnace bottom (9), and no current is allowed to flow through furnace walls (4) or the furnace housings (3) of the independent hearths (2). The electric ore heating furnace with no branch current between electrodes is arranged in the shape of a circular array and a rectangular array. A horizontal section of the independent hearth may be round or polygonal. When the electric ore heating furnace with no branch current between electrodes uses a three-phase alternating-current power supply, power is supplied to electrodes via an angular connection or a star connection. When the electric ore heating furnace with no branch current between electrodes uses a direct-current power supply, the common furnace bottom (9) and common electrodes (6, 7, 8) are positive electrodes, and the electrodes (1) of the independent hearths are negative electrodes. The high-, medium-, and low-frequency three-phase power supply modes are the same as an industrial-frequency three-phase alternating-current power supply mode.

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Inventors:
BA, Yong (Room 1701, Unit 1 Building 5,Huafu Yipin, Kuiwen Distric, Weifang Shandong 1, 261021, CN)
Application Number:
CN2018/105423
Publication Date:
March 21, 2019
Filing Date:
September 13, 2018
Export Citation:
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Assignee:
BA, Yong (Room 1701, Unit 1 Building 5,Huafu Yipin, Kuiwen Distric, Weifang Shandong 1, 261021, CN)
International Classes:
F27B3/00
Foreign References:
CN201666723U2010-12-08
CN107401917A2017-11-28
CN207622493U2018-07-17
CN203719426U2014-07-16
CN101639317A2010-02-03
CN203132321U2013-08-14
US4883258A1989-11-28
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (Room 1215-1218, Floor 12Left Bank Community No.68 Beisihuanxilu, Haidian District, Beijing 0, 100080, CN)
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