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71. 发明专利

JPS58136746A MANUFACTURE OF TREATMENT OF FERROCHROMIUM 失效
公开(公告)号：JPS58136746A
公开(公告)日：1983-08-13
申请号：JP18359582
申请日：1982-10-18
申请人： KAUNSHIRU FUOO MINERARU TEKUNO , MIDORUBAAGU STTEL ANDO AROIZU
发明人： TOOMASU ROBAATO KAA , NIKORASU ADORIAN BAAZAA
IPC分类号： C22C33/04 , C21B13/12 , C22B4/00 , C22C35/00

72. 发明专利

JPS58123809A REDUCTION OF FINE GRAIN ORE CONTAINING OXIDE AND DEVICE THEREFOR 失效
公开(公告)号：JPS58123809A
公开(公告)日：1983-07-23
申请号：JP162683
申请日：1983-01-07
申请人： VOEST AG
发明人： BUARUTERU RUUKUSHIYUNAIDERU , AROISU ROITOGEOBU , ERUNSUTO RIIGURERU , PAURU MIYURUNERU
IPC分类号： C21B11/00 , C21B13/12 , C22B4/00 , C22B5/10 , C22C33/04

73. 发明专利

JPS586947A TREATMENT OF CONCENTRATE OF RARE EARTH METAL 失效
公开(公告)号：JPS586947A
公开(公告)日：1983-01-14
申请号：JP10480081
申请日：1981-07-03
申请人： INOUE JAPAX RES
发明人： INOUE KIYOSHI
IPC分类号： B01J19/12 , C01F17/00 , C22B3/22 , C22B4/00 , C22B9/00 , C22B9/22 , C22B59/00 , H05B6/02 , H05B6/64 , H05B6/80
摘要： PURPOSE:To refine rare earth metals contained in a powdered concentrate by reduction in high yields while saving energy and resources by kneading the concentrate with an electrolytic soln., heating the kneaded material in a treating vessel with electric power induced by high frequency electric power, and causing electric discharge. CONSTITUTION:A concentrate contg. rare earth metals such as a powdered concentrate mixture of monazite or xenotime with bastnaesite is kneaded with an aqueous soln. of an acidic or alkaline electrolyte, and the kneaded material 2 is put in a tightly sealed treating vessel 1. A high frequency current having 300MHz-300GHz microwaves is supplied from a power source 4a to a coil 4, and the material 2 is heated with the induced current. Water in the material 2 is evaporated, and the induced current is interrupted to locally cause spark discharge, and rare earth metals in the concentrate react with the electrolyte to decompose and reduce the rare earth metallic compounds. When an alkaline substance including NaOH is used as the electrolyte, the material 2 can be heated to a high temp. such as about 1,000 deg.C to accelerate the decomposition and reduction.

74. 发明专利

JPS5755773B2 失效
公开(公告)号：JPS5755773B2
公开(公告)日：1982-11-26
申请号：JP16006878
申请日：1978-12-27
IPC分类号： C21C7/00 , C21C7/072 , C22B4/00 , C22B9/05 , C22B9/10

75. 发明专利

JPS5767138A Collection of metal from ore 失效
标题翻译：从ORE收集金属
公开(公告)号：JPS5767138A
公开(公告)日：1982-04-23
申请号：JP8894381
申请日：1981-06-11
申请人： Kiyatou Research Corp
发明人： POORU AARU KURUEJI , BUERIRU EICHI FURAAMU JIYUNIA
IPC分类号： C22B1/02 , C22B4/00 , C22B9/22 , C22B15/00 , C22B34/00 , C22B34/34 , C22B61/00 , H05B6/64
CPC分类号： C22B4/00 , C22B9/225 , C22B15/00 , C22B34/34 , C22B61/00

77. 发明专利

JPS5713107A PRODUCTION OF STAINLESS STEEL 失效
公开(公告)号：JPS5713107A
公开(公告)日：1982-01-23
申请号：JP17020180
申请日：1980-12-02
申请人： ESUKEIEFU SUTEIIRU ENG AB
发明人： SUBEN SANTEN , JIYON OROFU EDOSUTOROOMU
IPC分类号： C21B13/02 , C21B13/00 , C21B13/12 , C21C5/28 , C21C5/56 , C22B4/00

78. 发明专利

JPS5551498B2 失效
公开(公告)号：JPS5551498B2
公开(公告)日：1980-12-24
申请号：JP8083976
申请日：1976-07-09
IPC分类号： C22B7/00 , B03B13/06 , B29B11/00 , B29B17/02 , C22B4/00 , C22B5/00 , C25C1/00

79. 发明专利

JPS5544147B2 失效
公开(公告)号：JPS5544147B2
公开(公告)日：1980-11-11
申请号：JP10614372
申请日：1972-10-25
IPC分类号： C22C33/04 , C22B4/00

80. 发明专利

JPS5539118B2 失效
公开(公告)号：JPS5539118B2
公开(公告)日：1980-10-08
申请号：JP1873776
申请日：1976-02-23
IPC分类号： C22B4/00 , F27D11/06 , H05B6/16

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