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21. 发明专利

JP2002105543A METHOD FOR MELTING SCRAP AND MELTING FURNACE 失效
公开(公告)号：JP2002105543A
公开(公告)日：2002-04-10
申请号：JP2000297479
申请日：2000-09-28
申请人： MITSUBISHI MATERIALS CORP
发明人： HASEGAWA NOZOMI , TANAKA FUMITO
IPC分类号： C22B7/00 , C21C5/46 , C22B9/16 , C22B15/06 , F27B3/10 , F27D27/00 , F27D23/04
摘要： PROBLEM TO BE SOLVED: To provide a method for melting scrap and a melting furnace with which the scrap can efficiently be melted by a simple furnace structure unnecessary to drastic investment for the facility. SOLUTION: In the melting furnace 1 provided with a furnace body 2 for holding molten material M, and plural sets of top-blown lances 3 arranged in positions at the upper part of the furnace body 2 and faced to the upper surface of the molten material M, the top-blown lances are so constituted that at least one cavity among plural cavities formed by blowing of the plural top- blown lances 3, is formed deeper than the other cavities.

22. 发明专利

JPH09281029A METHOD FOR TESTING EROSION OF REFRACTORY MATERIAL 失效
公开(公告)号：JPH09281029A
公开(公告)日：1997-10-31
申请号：JP9070596
申请日：1996-04-12
申请人： MITSUBISHI MATERIALS CORP
发明人： TOKUSHIGE NAOTO , TANAKA FUMITO , OKABE SUSUMU
IPC分类号： G01N17/00 , G01N33/38
摘要： PROBLEM TO BE SOLVED: To test the erosion state of a test refractory material coming into contact with metal and slag by using a test furnace formed from the test refractory material in such a state that the bottom surface thereof is inclined and shaking the test furnace to move the metal and slag of eroding molten matter along the inclined bottom surface. SOLUTION: Eroding molten matter is introducing into a test furnace 11 so that the interface of the metal and slag thereof comes into contact with the inclined bottom surface of the furnace and, when the test furnace is tilted in this state, the eroding molten matter relatively moves along the inclined bottom surface and the metal 13a comes into contact with the whole of the inclined surface on a single side and the slag 13b comes into contact with the inclined surface on the opposite side to move. Continuously, when the test furnace is tilted reversely, the inclined surface brought into contact with the slag 13b up to now is covered with the metal 13a while the slag 13b comes into contact with the inclined surface covered with the metal 13a. As a result, a contact range X only of slag, an alternate contact range Y of metal and slag and a contact range Z only of metal are formed on the inclined surface and the erosion states of respective parts can be grasped at the same time.

23. 发明专利

JPH09218148A REFRACTORY MATERIAL EROSION TESTER 失效
公开(公告)号：JPH09218148A
公开(公告)日：1997-08-19
申请号：JP4827796
申请日：1996-02-09
申请人： MITSUBISHI MATERIALS CORP
发明人： TOKUSHIGE NAOTO , TANAKA FUMITO , OKABE SUSUMU
IPC分类号： G01N17/00 , G01N33/38
摘要： PROBLEM TO BE SOLVED: To ensure the easy control of test temperature as well as test atmosphere, and provide a high correlation with a practical application, regarding an erosion test device for a refractory material exposed to a high temperature molten material. SOLUTION: This device has a sealable testing furnace 10 for loading an erosion molten material 13 and a drive means for the testing furnace 10. Furthermore, the testing furnace 10 is lined so as to keep a testing refractory material 11 in contact with the erosion molten material 13. The testing furnace 10 is internally provided with a heating element, and has inlet and outlet holes for the erosion molten material 13 and atmosphere gas. In addition, the testing furnace 10 is provided with a temperature measurement means. In this case, the inner bottom of the testing furnace 10 is preferably made to have a slope formed out of the testing refractory material 11, and the metal and slag of the erosion molten material 13 are moved on the inclined inner bottom on the oscillation of the testing furnace 10.

24. 发明专利

JP2003231925A METHOD FOR COLLECTING VALUABLE METAL 审中-公开
公开(公告)号：JP2003231925A
公开(公告)日：2003-08-19
申请号：JP2002032181
申请日：2002-02-08
申请人： MITSUBISHI MATERIALS CORP
发明人： TANAKA FUMITO , SATO HIDEYA , IIDA OSAMU
IPC分类号： B09B3/00 , B09B5/00 , C22B7/02 , C22B9/10 , C22B15/00
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently collecting valuable metals containing little silicon and phosphorus from waste incinerated ash. SOLUTION: The method for collecting the valuable metals comprises a separation step of melting the waste burned ash in a melting furnace, and separating slag from the melt, and an oxidation step of charging the molten metal produced in the separation step into a treatment furnace, adding lime to it, heating it in an oxidizing atmosphere to change at least one impure element of silicon, phosphorus and iron in the metal into slag, and separating it. COPYRIGHT: (C)2003,JPO

25. 发明专利

JP2000080419A SMELTING FURNACE 失效
公开(公告)号：JP2000080419A
公开(公告)日：2000-03-21
申请号：JP24760498
申请日：1998-09-01
申请人： MITSUBISHI MATERIALS CORP
发明人： OKABE SUSUMU , TANAKA FUMITO , HORIBATAKE NAOKI
IPC分类号： C22B15/00
摘要： PROBLEM TO BE SOLVED: To restrain wave motion on a molten metal bath surface without needing a large auxiliary facility and to reduce the erosion of a refractory by disposing a top-blown lance above a position apart from the node of a standing wave caused on the molten metal bath surface in a furnace by blowing wind from the top-blown lance. SOLUTION: In a smelting furnace 1 disposing a top-blown lance 2, the depth n2 (m) of a cavity formed on a molten metal bath surface caused by blowing wind from the top-blown lance 2 is obtd. by equations I and II, and a natural frequency fc (Hz) of the cavity is obtd. from this depth n2. Successively, the natural frequency (f) (Hz) of the standing wave formable on the molten metal bath surface. In this natural frequency (f), under assuming that the standing wave having the natural frequency (f) equal to 1/2 of the natural frequency fc causes on the bath surface, the top-blown lance 2 is disposed above a position apart from the node 6 of this standing wave. Then, in the equations, n1 is the depth (m) of slag, ρ1 is the density (kg/m3) of slag, ρ2 is the density (kg/m3) of crude copper and H is the height (m) of the top-blown lance from the molten metal bath surface, etc.

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