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 Method, arrangement and pelletising plant US13881697 2011-10-26 US09011571B2 2015-04-21 Christian Fredriksson; Stefan Savonen
A method for the oxidation and sintering of pellets includes the introduction of a first medium into a compartment through an inlet connected to the compartment and the heating of the medium in the inlet through the use of a combustion arrangement. The use of the combustion arrangement includes the ignition of the fuel, the combustion of the fuel, and the transfer of combustion heat to the first medium that is present at the combustion arrangement. In a region in the inlet outside the direct passage of the first medium, the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium take place. By the introduction of a second medium into the region in the direct vicinity of the combustion arrangement, the combustion of the fuel and the transfer of combustion heat also to the second medium take place.
122 Method for flexibly sintering rare earth permanent magnetic alloy and sintering equipment thereof US14367897 2013-02-05 US20140348690A1 2014-11-27 Xiaodong Chen; Baoyu Sun
A method for flexibly sintering rare earth permanent magnetic alloy comprises: (1) weighing fine powder of rare earth permanent magnetic alloy, loading the fine powder in moulds, and orientedly compacting the fine powder in a press machine and in inert atmosphere to obtain blanks and loading the blanks into charging boxes; (2) opening the two isolating valves connected with each other; wherein after a first rolling wheel transmission in the second conveying vehicle transfers the charging tray into the first chamber of the glove box, the two isolating valves are closed, and the second conveying vehicle leaves; (3) locking two matching flanges of the two isolating valves tightly; (4) locking matching flanges tightly; and (5) processing the blanks with heating and heat preservation according to a preset process curve; wherein the blanks are sintered at a highest temperature of 1200° C.
123 Delivery chute for sinter material US13392636 2010-08-19 US08876526B2 2014-11-04 Heinrich Auberger; Edmund Fehringer; Gerhard Fritzl; Stephan Hattinger
A delivery chute for delivering sinter material onto a sinter cooler and a method for delivering sinter material from a sinter belt onto a sinter cooler are provided. The sinter material introduced into the delivery chute may be divided by distributor plates into at least two sinter material subflows flowing in different directions, which may be guided into the edge regions of a sinter material total flow obtained by combining them.
124 Hopper and reduction device using the same US12781990 2010-05-18 US08623269B2 2014-01-07 Jian-Xun Ren; Kang-Ding Yang; Qun Chen
The present disclosure relates to a hopper and a reduction device using the same. The hopper and the reduction device can be used to refining a material using thermal reduction reaction. The reduction device has a body defining cavity and a hopper, wherein the hopper is slidably disposed in the cavity.
125 Method, Arrangement and Pelletising Plant US13881697 2011-10-26 US20130220075A1 2013-08-29 Christian Fredriksson; Stefan Savonen
This invention concerns a method for the oxidation and sintering of pellets 1 arranged in a compartment 2 in which the oxidation and sintering take place with the aid of a medium with a defined temperature, which medium heats the pellets 1. The method comprises the introduction of a first medium 3 into the compartment through an inlet 4 connected to the compartment 2 and the heating of the medium in the inlet through the use of a combustion arrangement 5, or a part of a combustion arrangement, arranged in the inlet 4 and comprising fuel where the use of the combustion arrangement 5 comprises the ignition of the fuel, the combustion of the fuel whereby combustion heat is developed, and the transfer of combustion heat to the first medium 3 that is present at the combustion arrangement 5. The method is characterised by the arrangement of the combustion arrangement 5, or a part of it, in a region A in the inlet 4 that in turn is arranged outside of the direct passage of the first medium in and through the inlet 4 such that the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat to the first medium 3 take place in this region A, and by the introduction of a second medium 6 into the region A in the direct vicinity of the combustion arrangement 5, or a part of it, where the ignition of the fuel, the combustion of the fuel and the transfer of combustion heat also to the second medium 6 take place followed by further transport of the heated first medium 3 and the heated second medium 6 through the inlet 4 and into the compartment 2. The invention concerns also an arrangement 9 and a pelletising plant 13.
126 METHOD, ARRANGEMENT, AND PELLETISING PLANT US13881717 2011-10-26 US20130205949A1 2013-08-15 Christian Fredriksson; Stefan Savonen
This invention concerns a method during the oxidation and sintering of pellets (1) arranged in a compartment (2) in which the sintering takes place with the aid of a medium with a high temperature, which medium heats the pellets (1). The method comprises the introduction of a first medium (3) into the compartment (2) through an inlet (4) connected to the compartment (2) and the heating of the first medium (3) in the inlet (4) through the use of a combustion arrangement (5), or a part of a combustion arrangement, arranged in the inlet (4) and comprising fuel. The use of the combustion arrangement (5) comprises the ignition of the fuel, combustion of the fuel whereby combustion heat is developed, and the transfer of the combustion heat to the first medium (3) that is present at the combustion arrangement (5). The method is characterised by the introduction of a second medium (6) into the inlet (4) through an intake (7) in the direct vicinity of the combustion arrangement (5), the combustion arrangement part, where the ignition of the fuel and the combustion of the fuel take place for the transfer of combustion heat also to the second medium (6) that is present at the combustion arrangement (5), and the mixing of the heated first medium (3) and the heated second medium (6) before or during their introduction into the compartment (2). The invention concerns also an arrangement and a pelletising plant.
127 METHOD FOR THE CONTINUOUS SINTERING OF MINERAL MATERIAL AND SINTERING EQUIPMENT US13813622 2011-09-21 US20130130186A1 2013-05-23 Päivi Oikarinen
The invention relates to a method and equipment for the continuous sintering of mineral material in a sintering furnace (S). In the method, a material bed (2) is formed on a conveyor base (1), the material bed (2) is conveyed by the conveyor base (1) through the process zones (I-VII) of the sintering furnace that have different temperatures, the zones including at least one drying zone (I), at least one cooling zone (VII), and at least one other process zone (II, III, IV, V, VI) between the said drying zone and cooling zone, and gas is conducted through the conveyor base and the material bed (2), when the material bed travels through the process zones (I-VII), and gas is circulated in a circulation gas duct (3) from the last cooling zone (VII) to the drying zone (I). Part of the gas flow that is conducted to the drying zone (I) in the circulation gas duct (3) is removed as an exhaust gas flow (B) by the exhaust gas blower (5) of an exhaust gas duct (4). The volume flow of the exhaust gas flow (B) is regulated by regulating the blowing power of the blower (5) to control the temperature of the gas flow travelling through the material bed in the drying zone.
128 DELIVERY CHUTE FOR SINTER MATERIAL US13392636 2010-08-19 US20120225394A1 2012-09-06 Heinrich Auberger; Edmund Fehringer; Gerhard Fritzl; Stephan Hattinger
A delivery chute for delivering sinter material onto a sinter cooler and a method for delivering sinter material from a sinter belt onto a sinter cooler are provided. The sinter material introduced into the delivery chute may be divided by distributor plates into at least two sinter material subflows flowing in different directions, which may be guided into the edge regions of a sinter material total flow obtained by combining them.
129 METHOD AND DEVICE FOR SINTERING AN OBJECT WHILE DETERMINING THE GEOMETRIC SURFACE PROFILE OF THE OBJECT US12993438 2009-05-19 US20110069301A1 2011-03-24 Ulrich Marzok; Ralf Müller; Reinhard Schadrack; Michael Krauhausen
The invention relates to a method and a device for sintering objects by means of time-resolved detection of two- or three-dimensional surface profiles and, optionally, by means of temperature measurement in a high temperature furnace on the basis of optical measurement methods. During sintering, each surface point on an object can be measured for its position and, optionally, its temperature, and a change can be determined by successive measurements. The measured change additionally permits control of the sintering regime.The method comprises the steps of: placing an object 4 into a high temperature furnace 5; heating the furnace 5; generating a two- or three-dimensional surface profile at least of a subregion of the object 4 by: irradiating the object 4 with light from a light source 2a; detecting the light scattered by the object 4 with the aid of a detector 2b; determining the geometric surface profile from the detected light.
130 BOX-TYPE SINTERING CYCLE METHOD AND APPARATUS US12580653 2009-10-16 US20100098573A1 2010-04-22 Zhengfu Fan
The present disclosure relates to the sintering cycle method and apparatus of a kind of box-type sintering machine, which is peculiarly applicable to the production of lightweight aggregate using fly ash or industrial waste by sintering process. This apparatus includes four conveying systems, ignition station #1, ignition station #2, one tilt discharger, and one crusher; the box-type sintering stacking line A and B are straight and parallel, sharing one coarse dust collector; each box-type sintering stacking line is equipped with overhead workstation gantry crane rails and cranes, and each crane comprises two parts, i.e., hoist system and single rail trolley system; each box-type sintering stacking line has multiple sinter boxes; each sinter box has an air chamber below, under which there is the air chamber pipeline connected to the coarse dust collector. The present disclosure is a brand new cycle method and box-type sintering apparatus, resolving the long-standing issues of equipment waste and low efficiency associated with all sintering machines that return the empty sintering carts or boxes to the starting position following discharge, while also improving output efficiency, reducing the amount of equipment needed and related investment therein and considerably enhancing the reliability of system operation.
131 Rotary Hearth Sintering Furnace US11307705 2006-02-17 US20070205544A1 2007-09-06 Pete Komrowski; Steve Palin
A rotary hearth sintering furnace composed of a debinding system, a part loading station, a rotary hearth furnace having multiple heating zones, an atmosphere system for maintaining certain atmospheres within different zones of the furnace, an unloader station and a cooling conveyor that are preferably controlled with a single programmable logic controller and operating station for sintering powder metal parts in a minimal amount of space.
132 Process and system for thermally uniform materials processing US10775542 2004-02-10 US20040173608A1 2004-09-09 Donald A. Seccombe JR.; Gary Orbeck
The present invention provides a system and method for binder removal and sintering of materials such as ceramic materials and products, LTCC intervals, solid oxide fuel cells and powder metals. A combination of microwave and convection/radiation heating is employed for binder removal and sintering. Preferably, the microwave heating is accomplished using a variable or multi-frequency microwave source. A gas atmosphere is provided in the furnace chamber by one or more eductors which produces a high volume gas circulation in the furnace chamber to achieve a highly uniform gas environment and temperature. The process in accordance with the invention controls the heating cycle, the heat sources and thermal profile depending upon the composition of the particular material being processed. The thermal processing can be accomplished in a batch furnace in which a product is loaded for processing and unloaded after processing. The invention can also be practiced in a continuous process wherein the product is conveyed between furnace sections or chambers of a furnace.
133 Continuous sintering furnace and use thereof US09972933 2001-10-10 US06530780B2 2003-03-11 Kazumi Mori; Toru Iura; Tetsuya Ishimoto; Kazuhiko Katsumata; Hiroshi Machida
A continuous sintering furnace has an entrance-side deaerating chamber through which trays each with an material to be sintered being mounted thereon may pass, preheating, heating and cooling zones into which the trays are sequentially fed from the deaerating chamber, an exit-side deaerating chamber through which the trays having passed through the cooling zone may pass, a pusher for pushing the tray from the deaerating chamber to the preheating zone, a puller for pulling the tray from the cooling zone to the deaerating chamber, an intermediate puller for pulling the tray from the heating zone to the cooling zone, a vertically movable door between the deaerating chamber and the preheating zone, a vertically movable intermediate door adjacent to the door and arranged at an upstream end of the preheating zone in the direction of transportation of the trays, a vertically movable intermediate door between the heating and cooling zones and a vertically movable door between the cooling zone and the deaerating chamber. With the door being at a lowered position thereof for closing, heat input is suppressed to the cooling zone. Movement of the trays in the cooling zone is effected by the intermediate puller so as to decrease the number of trays needing to be pushed by the pusher.
134 Device for sintering a shaped body US10019102 2001-12-20 US20030024279A1 2003-02-06 Uwe Christiansen
The invention concerns a device (1) for sintering of a porous mold body (2) in a gas-tight chamber (3), with the mold body (2) hanging loose from a link chain (7) so that it can be fed continuously to a heating zone (5). In the area of the upper boiler (10), the traction direction of the link chain (7) is reversed by a deviation wheel (11). The tensile force is transmitted via a traction rope (13) that can be taken up on a take-up reel (14), such take-up reel (14) being driven by a drive (16) arranged outside the chamber (3). A drive shaft (15) for the take-up reel (14) provides for easy sealing of the duct (18) towards the chamber (3), because only a rotation and not a simultaneous axial displacement is required for the hoisting movement, and moreover, because the duct (18) is arranged at a spatial distance from the heating zone (5). The link chain (7) consists of carbon fiber reinforced mineral carbon materials and is thus resistant to high temperatures, so that no contamination of the mold body (2) by released components of the material of the link chain (7) will occur.
135 Method and apparatus for fabrication of cobalt alloy composite inserts US09563075 2000-04-24 US06500226B1 2002-12-31 Mahlon D. Dennis
This disclosure features a process of making a two part drill bit insert, namely, a body portion of hard particles such as tungsten carbide particles mixed in an alloy binding the particles. The alloy preferably comprises 6% cobalt with amounts up to about 10% permitted. The body is sintered into a solid member, and also joined to a PDC crown covering the end. The crown is essentially free of cobalt. The process sinters the crown and body while preserving the body and crown cobalt differences.
136 Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet US10173786 2002-06-19 US20020159909A1 2002-10-31 Akiyasu Oota; Tsuyoshi Wada; Katsumi Okayama
A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate, on which green compacts of rare-earth magnetic alloy powder are placed. The supporting rods are secured inside the body. At least the body and the door are made of molybdenum.
137 Sintering method and apparatus using centrifugal force US10024264 2001-12-21 US20020110475A1 2002-08-15 Koji Watari; Mamoru Aizawa; Syoji Uchimura; Hirohide Ishiguro; Hideki Morimitsu
A method and an apparatus for sintering a compact of particulate material for a ceramic or of particles of a metal, or a ceramic precursor film, wherein the sintering is performed by heating and burning the compact or the ceramic precursor film while applying centrifugal force to the compact or the ceramic precursor film.
138 Fly ash treatment US297003 1999-06-21 US6105517A 2000-08-22 Joshua Swithenbank
A process for treating toxic fly ash from an incinerator which comprises heating the fly ash held in suspension in a combustible or combusted gas at least to a temperature at which sintering of the fly ash takes place.
139 Method and apparatus for fabrication and sintering composite inserts US936392 1997-09-25 US6011248A 2000-01-04 Mahlon Denton Dennis
The present disclosure is directed to the fabrication of a highly wear layer either directly upon an article or tool support structure or body, or as a wear resistant insert or element which is subsequently attached to the tool body. The wear material is formed by sintering particulate material using the absorption of microwave energy as a means of heating. The disclosure also encompasses post manufacture annealing, using heating by microwave radiation, of both highly wear resistant inserts and composite articles which consist of a wear resistant layer and a body. The wear resistant material, whether fabricated directly upon an article or fabricated separately and subsequently affixed to an article, provides an abrasive wear surface and greatly increases the life of the article. Microwave sintered wear resistant surfaces for mills, drills, grinders, brakes, bearings, saw blades and other articles and assemblies are disclosed.
140 Method for repairing an interchangeable sintering furnace US434680 1995-05-04 US5607296A 1997-03-04 Donald C. Wadekamper
The refractory section of a sintering furnace for sintering mixed oxide nuclear fuel pellets is disposed between a pair of glove boxes. Extensions from the opposite ends in communication with the sintering channel project through glove ports in the glove boxes, facilitating movement of boats containing the pellets through the sintering channel. Flexible material connects between the opposite ends of the refractory section and the glove boxes to isolate the extensions, glove boxes and sintering channel from the surrounding environment. The refractory section may be replaced by disconnecting the extension from boat pushing apparatus, displacing the furnace away from one glove box, gathering the flexible material and sealing it at three longitudinal locations and severing the seal at the intermediate location whereby both the glove box and the sintering furnace are maintained isolated. The opposite end of the refractory section is similarly disconnected from the glove box whereby a new sintering furnace can be disposed and coupled to the glove boxes while maintaining the sintering channel and glove boxes isolated.
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