| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Open-arc furnace for carbothermic reduction of metal oxide | JP22141790 | 1990-08-24 | JPH03117882A | 1991-05-20 | BISHIYU DEE DOSA |
| PURPOSE: To obtain a two-stage open-arc furnace for carbothermic reduction of metal silicon, by using hollow crystallized silicon carbide beams as refractory in areas of an open-arc furnace which require high-temperature and chemical stability and electrical resistance. CONSTITUTION: A two-stage arc furnace is surrounded by a steel plate 1, and is composed of a first-stage furnace body 8 at the lower part thereof and a second-stage shaft 7 at the upper part thereof. An assembly 4 that is an energy source enters the first-stage furnace body 8 at the end portion thereof opposite to the shaft 7 through a stainless steel water-cooled panel 5. The water-cooled panel 5 is supported by a chrome-alumina tray 17. Hollow silicon carbide refractory beams 16 contact with the tray 17 to insulate the energy source 4 from highly electrically conductive materials. A silicon carbide beam 6 is used in areas of the furnace which are exposed to temperatures higher than those tolerated by standard refractories, the areas requiring chemical stability to oxidation and reduction type reactions and sufficient electric resistance to minimize arcing from the exposed electrode. COPYRIGHT: (C)1991,JPO | ||||||
| 122 | JPH0159520B2 - | JP7248381 | 1981-05-13 | JPH0159520B2 | 1989-12-18 | ECHIGO RYOZO; NODA TAKAAKI |
| 123 | JPS6222072B2 - | JP4959979 | 1979-04-21 | JPS6222072B2 | 1987-05-15 | SAWADA MASAHISA; KOMATSU FUMIAKI; SANADA KAZUSUKE; SAKAKI YORIHISA |
| 124 | Stirrer for molten metal | JP12364582 | 1982-07-14 | JPS5913016A | 1984-01-23 | YONEKAWA TADAO |
| PURPOSE:To stir the molten metal in a melting furnace with simple constitution by sucking the molten metal to a riser located under the molten metal in said furnace and connected to the furnace, and returning the sucked metal into the melting furnace. CONSTITUTION:A titled stirrer is constituted of a riser 10 which is located under the surface 8 of the molten metal 5 in a melting furnace 1 and is connected to the furnace 1, an electric heater 31 which is provided in the position where the surface of the molten metal sucked in the riser 10 arrives and heats the riser 10, a selector valve 18 which is communicated with the top end part 11 of the riser 10, a vacuum source 20 which is connected to the valve 18 and decreases the pressure in the part 11 of the riser 10, and a duct means 21 which is connected to the valve 18 and supplies the waste gas from a melting furnace 25 to the part 11 of the riser 10. The heater 31 for heating is provided so as to enclose the riser 10 coaxially with the riser 10. | ||||||
| 125 | Method and apparatus for recycling top gas for shaft furnace | US14967375 | 2015-12-14 | US10093996B2 | 2018-10-09 | John D. Winter; Haruyasu Michishita |
| Method, apparatus and system for improved energy efficiency in a direct reduction iron production process which uses a direct reduction shaft furnace and syngas as the reduction gas. The method and system of the invention use a part of the top gas emanating from the shaft furnace as transport gas for the gasifier, and control the volume of the top gas used as recycled top gas or fuel for the gas heater. The present invention achieves high energy efficiency, and reduces the need to use additional CH4 source for the reduction gas. | ||||||
| 126 | Process for operating a blast furnace installation with top gas recycling | US13996869 | 2011-12-20 | US10054366B2 | 2018-08-21 | Philippe Blostein; Michel Devaux; Richard Dubettier-Grenier |
| Blast furnace installation having top gas recycling and process for operating same, in which the oxygen concentration of the oxidizing gas injected into the blast furnace is regulated as a function of the flow rate of the recycled top gas. | ||||||
| 127 | Sintering furnace with a gas removal device | US14385655 | 2013-03-13 | US09841236B2 | 2017-12-12 | Eberhard Ernst; Rene Albert; Thomas Schupp |
| A sintering furnace with a first zone, in particular a burn-off zone, and a second zone, in particular a sintering zone, and also a transitional zone arranged between the first zone and the second zone. The sintering furnace has at least one transporting mechanism for transporting bodies to be sintered on a transporting area. With this transporting mechanism, the bodies to be sintered can be transported from the first zone and through the transitional zone to the second zone. The sintering furnace also has at least one gas removal device with at least one gas removal device opening. Here, the gas removal device opening is at least partially arranged in the region of the transitional zone. Furthermore, a method by means of which gases can be removed from a sintering furnace is claimed. | ||||||
| 128 | METHOD FOR SINTERING WORKPIECES TO BE SINTERED, AND SYSTEM FOR THIS PURPOSE | US14902424 | 2014-07-01 | US20160368828A1 | 2016-12-22 | Axel Weiand |
| In a method for sintering workpieces to be sintered, the workpieces to be sintered are debindered in an oxygen-free or at least oxygen-reduced inert gas atmosphere, wherein a debindering atmosphere is generated which is loaded with binding auxiliaries that are released from the workpieces to be sintered during the debindering process. The workpieces to be sintered are brought to a sintering temperature, wherein a sintering discharge gas is generated, and the workpieces to be sintered are cooled in a controlled manner. The sintered workpieces are debindered in a separate debindering chamber and sintered in a separate sintering chamber. The invention further relates to a system for sintering workpieces to be sintered. | ||||||
| 129 | PNEUMATIC ORE CHARGING | US15117374 | 2015-01-27 | US20160348199A1 | 2016-12-01 | Robert MILLNER; Jan-Friedemann PLAUL; Norbert REIN |
| A method for reducing metal oxide containing charge materials (1): reducing the metal oxide containing charge materials (1) in at least two fluidized bed units (RA,RE) by means of a reduction gas (2), wherein at least some of the resulting off-gas (3) is recycled and wherein the metal oxide containing charge materials (1) are conveyed into the fluidized bed unit RE by a propellant gas. Also, apparatus for carrying out the method according to the invention is disclosed. | ||||||
| 130 | ENERGY AND WATER RECOVERY FROM PRESSURE OXIDATION FLASH VESSEL STEAM | US14653232 | 2013-12-20 | US20160186288A1 | 2016-06-30 | John O'CALLAGHAN; Timo HAAKANA; Risto PIEVILÄINEN |
| The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate having a first low condensate temperature to con-dense at least part of the water vapour comprised in the said first dirty flash steam on the first recirculating condensate and simultaneously to heat the said first recirculating condensate to obtain a first recirculating condensate having a first high condensate temperature and a first vent steam. The invention further relates to a pressure oxidation arrangement adapted for recovering energy from pressure oxidation flash steam and to a use of high temperature condensate and to a use of a direct contact condenser for recovery of energy and water from a pressure oxidation flash steam. | ||||||
| 131 | Pot heat exchanger | US13824950 | 2011-09-01 | US09360145B2 | 2016-06-07 | Anders Kenneth Sorhuus; Geir Wedde; Odd Edgar Bjarno |
| A raw gas collection system for collecting raw gas from a plurality of aluminum smelting pots is equipped with a plurality of branch ducts (28d), each of which is arranged to channel a respective branch flow (38d) of raw gas from an aluminum smelting pot to a collection duct (26A), which is common to and shared by the branch ducts (28d). Each of said branch ducts (28d) is, near an outlet (52d) thereof, equipped with a curved section (50d) for aligning the branch flow (38d) with a flow direction of raw gas (27A) already present in the common collection duct (26A), and a constriction (54d) for accelerating the branch flow (38d) through the branch duct outlet (52d) into the common collection duct (26A). Furthermore, each of said branch ducts (28d) is equipped with a heat exchanger (40d) for removing heat from the respective branch flow (38d) of raw gas. The combined flow resistance of the constriction (54d) and the heat exchanger (40d) reduces the need for adjusting the respective branch flows (28d) using dampers, thereby reducing the power required to transport the raw gas. | ||||||
| 132 | Partially-reduced iron producing apparatus | US14032980 | 2013-09-20 | US09163879B2 | 2015-10-20 | Susumu Kamikawa; Hideaki Mizuki; Hideki Ito; Keiichi Sato; Khanhson Pham |
| A partially-reduced iron producing apparatus includes: an exhaust gas circulating device which supplies an oxygen-containing gas to raw-material pellets to be heated by a heat of ignition raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas discharged from the raw-material pellets by use of the heat of the ignition raw-material pellets heated in a heating furnace and mixing the discharged exhaust gas with air; and a liquid-tar separating device which is provided in the exhaust gas circulating device and which separates a tar component in the exhaust gas from the exhaust gas as a liquid tar. | ||||||
| 133 | Raw gas collection system | US13824969 | 2011-09-14 | US09115437B2 | 2015-08-25 | Anders Kenneth Sorhuus; Geir Wedde; Odd Edgar Bjarno |
| A raw gas collection system (15) for collecting raw gas from a plurality of aluminum smelting pots (4) is equipped with a plurality of branch ducts (16, 16a-d). Each branch duct (16, 16a-d) is arranged to channel a respective branch flow (32, 32a-b) of raw gas from an aluminum smelting pot (4) to a collecting duct (20a), which is common to and shared by branch ducts (16, 16a-d). Several of the branch ducts (16, 16a-d) are equipped with a combined heat transfer and flow resistance generating element (17) to remove heat from the respective branch flow (32, 32a-b) of raw gas and to balance the flow of raw gas in the raw gas collecting system (15). The combined heat transfer and flow resistance generating elements (17) reduce the need for adjusting the respective branch duct (16, 16a-d) flow volumes using dampers, thereby reducing the power required to transport the raw gas through the system. | ||||||
| 134 | METHODS AND SYSTEMS FOR RECOVERY OF CO2 GAS IN CEMENT-MANUFACTURING FACILITIES, AND PROCESSES FOR MANUFACTURING CEMENT | US14659686 | 2015-03-17 | US20150183685A1 | 2015-07-02 | Hirokazu SHIMA; Naohiro Higuchi; Yoshinori Takayama; Takuya Komatsu; Junzhu Wang |
| An object of the present invention is to separate CO2 gas generated in a cement-manufacturing facility in a high concentration and recover the CO2 gas. The present invention includes: feeding a cement material before calcination and a heat medium which has a particle diameter larger than that of the cement material and has been heated to the calcination temperature or higher in a medium-heating furnace (14), to a mixing calciner (12); and recovering the CO2 gas generated by the calcination of the cement material. The heat medium circulates between the medium-heating furnace and the mixing calciner. Another aspect of the present invention includes: feeding a cement material before calcination to a regenerative calciner (112) which has been heated to the calcination temperature or higher and has stored heat therein; and recovering the CO2 gas generated by the calcination of the cement material. | ||||||
| 135 | Metal recovery from contaminated metal scrap | US13578399 | 2011-02-04 | US08845777B2 | 2014-09-30 | Rifat Al Chalabi; Ophneil Henry Perry |
| A metal reclaiming system and method for reclaiming metal from scrap material is provided. The system has a furnace (12) and a controller (106) for controlling operation of the system. The controller (106) operates the metal reclaiming system in a first operating mode in which the furnace (12) is operated at a first temperature in the range of 350° C. to 550° C. to incinerate pollutants and drive off volatile organic compounds (VOCs) from the scrap material without melting the metal. The controller (106) is operates the metal reclaiming system in a subsequent operating mode in which the furnace (12) is operated at a further, higher temperature to melt metal in the said scrap for reclaiming. | ||||||
| 136 | Device for recovering heat of molten slag | US13320080 | 2010-05-11 | US08764439B2 | 2014-07-01 | Tadaaki Shimizu |
| A device for recovering heat of molten slag, having a simple structure and high heat recovery efficiency. The device includes: a fluidized bed (3) formed of a fluidized bed material (32) composed of a crushed solidified slag; a slag pool (4) for feeding a molten slag to the fluidized bed; heat transfer tubes (7) for recovering heat from the fluidized bed; and a solidified slag withdrawing device (21) for recovering a solidified slag (34), such solidified slag (34) being formed in the fluidized bed as the molten slag is solidified therein. Molten slag droplets (31) are dripped into the fluidized bed (3) from the slag pool (4) and solidified in the corresponding fluidized bed. The heat released at that time is transferred to the heat transfer tubes (7) through the bed material (32). Further, heat-transfer coefficient between the heat transfer tubes and the bed material is about 10 times larger than that between the heat transfer tubes and gas, thereby reducing heat-transfer area for required heat recovery amount, thus making it possible to reduce the size of the heat recovery device. | ||||||
| 137 | METAL RECOVERY FROM CONTAMINATED METAL SCRAP | US13578399 | 2011-02-04 | US20130199338A1 | 2013-08-08 | Rifat Al Chalabi; Ophneil Henry Perry |
| A metal reclaiming system and method for reclaiming metal from scrap material is provided. The system has a furnace (12) and a controller (106) for controlling operation of the system. The controller (106) operates the metal reclaiming system in a first operating mode in which the furnace (12) is operated at a first temperature in the range of 350° C. to 550° C. to incinerate pollutants and drive off volatile organic compounds (VOCs) from the scrap material without melting the metal. The controller (106) is operates the metal reclaiming system in a subsequent operating mode in which the furnace (12) is operated at a further, higher temperature to melt metal in the said scrap for reclaiming. | ||||||
| 138 | PROCESS AND PLANT FOR PRODUCING HOT METAL | US13700745 | 2011-05-19 | US20130118306A1 | 2013-05-16 | Jean-Paul Nepper; Tobias Stefan |
| A process for producing hot metal includes partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture. The reduced mixture is cooled to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium that is preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus. The reduced mixture is then supplied to a smelting reduction unit via a discharge system. | ||||||
| 139 | REFLOW FURNACE | US13514969 | 2010-12-07 | US20120240424A1 | 2012-09-27 | Takashi Sugihara; Hiroshi Taguchi; Daisuke Kasahara; Koichiro Hosokawa; Yuta Saito |
| To prevent evaporated flux from being attached to rotation axes of motors which rotate fans positioned in a preheating zone, a main heating zone and a cooling zone and being solidified, the evaporated flux is efficiently and surely collected with the flux liquefying before the flux is solidified and having fluidity.A drain portion 20 constituting a flux collection apparatus 10A is formed at a side of a motor base 16 opposed to the fan and at a circumferential portion of the rotation axis 14. A surface of the drain portion 20 opposed to the fan is formed as an inclined surface 20A which is inclined from a level position of the motor base 16 to a discharge port 46 provided at a back side of the motor base 16. The flux collected to a center portion of the motor base 16 by the rotation drive of the fan is flown to the drain portion 20 formed in the center portion of the motor base 16, is flown along the inclined surface 20A and contained into a collection container 34 from the drain portion 20 through the discharge port 46, a drain pipe and a pipe 48. | ||||||
| 140 | DEVICE FOR RECOVERING HEAT OF MOLTEN SLAG | US13320080 | 2010-05-11 | US20120055658A1 | 2012-03-08 | Tadaaki Shimizu |
| A device for recovering heat of molten slag, having a simple structure and high heat recovery efficiency. The device includes: a fluidized bed (3) formed of a fluidized bed material (32) composed of a crushed solidified slag; a slag pool (4) for feeding a molten slag to the fluidized bed; heat transfer tubes (7) for recovering heat from the fluidized bed; and a solidified slag withdrawing device (21) for recovering a solidified slag (34), such solidified slag (34) being formed in the fluidized bed as the molten slag is solidified therein. Molten slag droplets (31) are dripped into the fluidized bed (3) from the slag pool (4) and solidified in the corresponding fluidized bed. The heat released at that time is transferred to the heat transfer tubes (7) through the bed material (32). Further, heat-transfer coefficient between the heat transfer tubes and the bed material is about 10 times larger than that between the heat transfer tubes and gas, thereby reducing heat-transfer area for required heat recovery amount, thus making it possible to reduce the size of the heat recovery device. | ||||||
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