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1. 发明专利

JP2000009388A MELTING FURNACE FOR INCINERATION RESIDUE 失效
公开(公告)号：JP2000009388A
公开(公告)日：2000-01-14
申请号：JP18975298
申请日：1998-06-19
申请人： SHINAGAWA REFRACTORIES CO , DAIDO STEEL CO LTD
发明人： MATSUBARA KENICHI , NISHIMURA MASAAKI , KANEFUJI KOICHIRO
IPC分类号： F27D1/00 , F27D1/04
摘要： PROBLEM TO BE SOLVED: To prolong the lifetime of melting furnace while stabilizing the structure of the furnace by employing a high SiC based reduction firing refractory brick having SiC content of specified level or above at the furnace side wall part coming into face contact with a molten produced in the furnace. SOLUTION: A melting furnace for incineration residue, i.e., an arc furnace, comprises a furnace body 11, a furnace cover 12 applied thereto, and an electrode 13 inserted into the furnace from the furnace cover 12. A molten 21 comprising a lower molten metal layer 22, an upper molten slag layer 23 and a thin uppermost molten salt layer 24 is produced in the furnace when incineration residue is melted. The furnace side wall part (lower part of the side wall of the furnace body 11) coming into face contact with the molten 21 in the furnace is constructed, sequentially from the inside toward the outside of the furnace, of a high SiC based reduction firing refractory brick 31 having SiC content of 92 wt.% or above and apparent porosity of 12% or less, a refractory heat insulating material 32, and a steel plate 33 (furnace shell). The furnace side wall part coming into face contact with gas 26 is constructed sequentially of an irregular refractories 41, a refractory heat insulating material 42, and the steel plate 33 furnace shell.

2. 发明专利

JPH05118522A MUNICIPAL REFUSE INCINERATED ASH MELTING FURNACE 失效
公开(公告)号：JPH05118522A
公开(公告)日：1993-05-14
申请号：JP30670791
申请日：1991-10-24
申请人： SHINAGAWA REFRACTORIES CO , DAIDO STEEL CO LTD
发明人： MATSUBARA KENICHI , OKADA HARUO , KANEFUJI KOICHIRO
IPC分类号： C04B33/00 , F23G5/44 , F23J1/00 , F23J1/08 , F23M5/00 , F27B3/08
摘要： PURPOSE:To prevent floating and peel and the damage of a furnace floor by a method wherein fire bricks are laid in an inverted arch shape on the whole on the surface, making contact with a molten substance in a furnace, of a furnace floor through unshaped refractories. CONSTITUTION:A stamp material 41 is compacted on the furnace floor of a furnace shell 31 of a furnace body 11 and fire bricks 51 are laid in an inverted arm shape on the whole on the upper part of the stamp material 41. The furnace wall of the furnace shell 31 of the furnace body 11 is lined with fire bricks 52 and 61 and the fire brick 52 is lined with a protection wall 71. A molten metal A in the furnace is in contact with the fire bricks 51 on the furnace floor and molten slug B positioned at the upper layer of the molten metal A makes contact with the protection wall 71. Thus, even when the fire bricks are pushed against each other owing to thermal expansion, the press force thereof is exerted in the direction of unshaped refractories formed at a lower part to prevent floating of a furnace floor. Further, the fire bricks are prevented from lifting owing to entrance of molten slug.

3. 发明专利

JP2006176830A Method for concentrating/recovering metal nickel from powder comprising nickel element 有权
标题翻译：从包含镍元素的粉末中浓缩/回收金属镍的方法
公开(公告)号：JP2006176830A
公开(公告)日：2006-07-06
申请号：JP2004371073
申请日：2004-12-22
申请人： Daido Steel Co Ltd , Taiyo Nippon Sanso Corp , 大同特殊鋼株式会社 , 大陽日酸株式会社
发明人： IGARASHI HIROSHI , MATSUMURA TAKAYUKI , MIYAKE SHINICHI , TAKESONO YOSHISATO , MASAKI YOSHINORI , TATEISHI TORU , MATSUI KOJI , OKURA SUEYOSHI , KANEFUJI KOICHIRO
IPC分类号： C22B5/12 , C22B7/00 , C22B7/02 , C22B23/02
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a method for concentrating/recovering metal nickel from nickel element-containing powder where metal nickel with high purity can be recovered in a powdery shape from a nickel element-containing powder without producing a metal bath. SOLUTION: Nickel element-containing powder is fed into a high temperature reducing air flow heated at ≥500°C, so as to cause reduction reaction in the high temperature reducing air flow, and metal nickel is locally concentrated in the powder. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种从含镍元素的粉末中浓缩/回收金属镍的方法，其中可以从含镍元素的粉末中回收粉末状的高纯度的金属镍而不产生金属浴。解决方案：将含镍元素的粉末进料到加热到≥500℃的高温还原气流中，以在高温还原气流中引起还原反应，金属镍局部浓缩在粉末中。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2000220819A METHOD FOR TREATING EXHAUST GAS IN ASH-MELTING FURNACE 失效
公开(公告)号：JP2000220819A
公开(公告)日：2000-08-08
申请号：JP2164299
申请日：1999-01-29
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO
IPC分类号： F23J15/04 , F23J15/00 , F23J15/06 , F23J15/08
摘要： PROBLEM TO BE SOLVED: To provide a method for treating the exhaust gas of an ash-melting furnace with a small amount of exhaust gas to be discharged to the environment. SOLUTION: Dust and acid gas in an exhaust gas that is diluted and cooled by blowing a gas for diluting and cooling into a high-temperature exhaust gas Ga being discharged from an ash-melting furnace 1 are eliminated. An obtained exhaust gas Gd is partially blown into the high-temperature gas Ga being discharged from the ash-melting furnace 1 via the reflux tube 25 and is used as the gas for diluting and cooling along with air Q for cooling that is blown into the exhaust gas.

5. 发明专利

JPH11148635A FLY ASH SUPPLYING DEVICE FOR FLY ASH MELTING FURNACE 失效
公开(公告)号：JPH11148635A
公开(公告)日：1999-06-02
申请号：JP31980797
申请日：1997-11-20
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO
IPC分类号： F23J1/00 , F23K3/02
摘要： PROBLEM TO BE SOLVED: To prevent the clogging of fly ash in a pipe for supplying fly ash into a melting furnace and prevent the pipe from breakage due to the fly ash. SOLUTION: In a pipe for supplying fly ash into a melting furnace, a metallic pipe 45 is employed for a division AB, wherein a radius of curvature is small, while pipes 10, 10', made of abrasion resistant rubber, are employed for the other parts of the pipeline. When the flying ash passes through the pipeline, the rubber tubes are deformed or vibrated properly by the pressure of the flying ash and, therefore, the pipes are hardly clogged with the fly ash. On the other hand, the metallic pipe is employed for the division AB whereby the pipe hardly receives damage due to the fly ash. Further, when a pressure in the pipe, which is detected by a pressure sensor 42, has shown increasing tendency, a vibrator 44 deforms the rubber tubes and an oscillator 46 oscillates the metallic pipe 45 whereby the fly ash, trying to adhere to the pipes, is removed and the fly ash can be fed smoothly into the fly ash melting furnace at all the times.

6. 发明专利

JPH10244117A EXHAUST GAS COOLING DEVICE FOR WASTE PRODUCT MELTING FURNACE 失效
公开(公告)号：JPH10244117A
公开(公告)日：1998-09-14
申请号：JP7073797
申请日：1997-03-06
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO , GOTO HIROSHI
IPC分类号： F23G5/00 , B01D51/00 , B09B3/00 , F23J1/00 , F23J15/06
摘要： PROBLEM TO BE SOLVED: To efficiently cool high temp. exhaust gas passing through a duct by providing plural numbers of small holes for blowing cooling medium into the duct for discharging the exhaust gas generated in a furnace on a waste product melting path. SOLUTION: A cylindrical duct 7 is vertically provided on an exhaust gas discharge port 6 provided on a ceiling wall 3 of the arc type waste product melting path, and the exhaust gas is introduced into a dust collector, etc., via the successive duct 8 connected to the upper end of the duct 7. Plural numbers of small holes 10 are provided on the duct 7 by making the installation pitch narrower such that the installation density is higher at the lower part side 15 of the duct, and also the outer periphery of the duct 7 is covered with a feed chamber 12 of the cooling medium and the inside of the chamber 12 is partitioned with partitioning walls 13, 14 into three partitioning chambers 12a-12c. The cooling media produced by spraying water in the air are independently fed to respective partitioned chambers 12a-12c to cool the exhaust gas passing through the duct 7.

7. 发明专利

JPH08197034A TREATMENT ACIDIC FUSED FLYING ASH 失效
公开(公告)号：JPH08197034A
公开(公告)日：1996-08-06
申请号：JP2587195
申请日：1995-01-20
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO , HIYANE HITOSHI
IPC分类号： F23J1/00 , A62D3/33 , A62D101/08 , B09B3/00 , F23G5/00
摘要： PURPOSE: To economically and sufficiently prevent the elution of heavy metals contained in acidic fused flying ash. CONSTITUTION: In a method of treating acidic fused flying ash generated when waste and its incinerated residue are fused, slaked lime is added to acidic fused flying ash to adjust pH to >=8.5. Next, 0.1-10 prt.wt. calcium polysulfide based on 100 prt.wt. of acidic fused flying ash is added, and besides mineral acid is added to adjust pH to 8.5-10.0, and then, 10-35 prt.wt. water based on 100 prt.wt. acidic fused flying ash is added to perform kneading.

8. 发明专利

JPH0467106B2 失效
公开(公告)号：JPH0467106B2
公开(公告)日：1992-10-27
申请号：JP2607685
申请日：1985-02-12
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO , OKADA SHO , TANAKA HIROSHI
IPC分类号： F27B9/24

9. 发明专利

JPH0346529B2 失效
公开(公告)号：JPH0346529B2
公开(公告)日：1991-07-16
申请号：JP3006283
申请日：1983-02-24
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO
IPC分类号： C21D1/52 , C21D1/00 , C21D1/34 , F23C99/00 , F27B3/20 , F27B9/36 , F27D17/00

10. 发明专利

JPH0395391A FURNACE COVER 失效
公开(公告)号：JPH0395391A
公开(公告)日：1991-04-19
申请号：JP23105089
申请日：1989-09-06
申请人： DAIDO STEEL CO LTD
发明人： KANEFUJI KOICHIRO
IPC分类号： F27D1/18
摘要： PURPOSE:To perform pumping also for a small furnace cover utilizing pumping for a large furnace cover, and hence prolong a life and replace only the small furnace cover when damaged by connecting pumping tubes each for blowing water droplets of cooling water to lower plates of hollow parts of the large and small furnace covers divide into annular parts and control parts. CONSTITUTION:In a large furnace cover 54, water droplets blown out of a nozzle 32 is blown over a lower plate 7a and an inner peripheral side plate 56 for cooling thereof. The blown cooling water flows down along the slope of the lower plate 7a and is sucked in through a suction inlet 35 and discharged via an exhaust tube 37. On the contrary, in a small furnace cover 55, the cooling water supplied from a water supply header 30 of the large furnace cover 54 through a connection tube 83 to a water supply inlet 82 is blown as water droplets from a nozzle 81 through a water supply header 79 and a branch tube 80 toward a casing 9b and a lower plate 71 for their cooling. Further, the cooling water flows down to the outer peripheral part and is sucked up through the exhaust tubes 85, 86 and therefore discharged from discharge parts 87, 86 to discharge tubes 36, 37 of the large furnace cover 54. When only a part 74 of a heating electrode where it is existent is damaged, only the replacement of the small furnace cover 55 is sufficient.

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