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公开(公告)号：US12000011B2
公开(公告)日：2024-06-04
申请号：US17843013
申请日：2022-06-17
IPC分类号： C22B1/24 , C21B3/02 , C21B13/00 , C21B13/02 , C22B1/243 , C22B1/244 , F27B1/00 , F27D3/08 , F27D13/00
CPC分类号： C22B1/24 , C21B3/02 , C21B13/008 , C21B13/0086 , C21B13/02 , C22B1/243 , C22B1/244 , F27B1/00 , F27D3/08 , F27D13/00
摘要： A process for producing hot briquetted iron with increased solid carbonaceous material and/or flux includes: providing a shaft furnace of a direct reduction plant to reduce iron oxide with reducing gas; providing a hot briquette machine to produce hot briquetted iron; coupling a chute between a) a discharge exit of the shaft furnace for discharge of hot direct reduced iron and b) an entrance of the hot briquette machine; adding solid carbonaceous material and/or flux to the discharged hot direct reduced iron from the shaft furnace to produce a mixture of the discharged hot direct reduced iron and the solid carbonaceous material and/or flux before feeding to the hot briquette machine; and processing in the hot briquette machine to produce a product of hot briquetted iron with increased solid carbonaceous material content greater than about 3 weight percent and/or an increased flux content.
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公开(公告)号：US20220411327A1
公开(公告)日：2022-12-29
申请号：US17779213
申请日：2020-11-11
申请人： Cemgreen APS
摘要： The invention is concerned with a method for producing a cement comprising milled cement clinker and a supplementary cementitious material, wherein the method comprises the steps of: producing the milled cement clinker by a clinkerization process, comprising the steps of calcining and subsequently milling a limestone-based raw material; producing the supplementary cementitious material by calcining a raw material of the supplementary cementitious material at a temperature of less than 980° C. and subsequently milling the calcined raw material of the supplementary cementitious material, wherein the raw material of the supplementary cementitious material has an average particle size of 1 to 300 mm; and blending the milled cement clinker and the supplementary cementitious material; wherein the method is a continuous process comprising the step of calcining the raw material of the supplementary cementitious material in a kiln with a separate heating unit and/or combustion unit. Further, the invention is concerned with a method for producing a cement comprising milled cement clinker and a supplementary cementitious material, wherein the method comprises the steps of: producing the milled cement clinker by a clinkerization process, comprising the steps of calcining and subsequently milling a limestone-based raw material; producing the supplementary cementitious material by calcining a raw material of the supplementary cementitious material at a temperature of less than 980° C. and subsequently milling the calcined raw material of the supplementary cementitious material, wherein the raw material of the supplementary cementitious material has an average particle size of 1 to 300 mm, wherein at least 5 wt % of the particles have a particle size of above 4.75 mm; and blending the milled cement clinker and the supplementary cementitious material. The invention is also concerns a cement comprising milled cement clinker and a supplementary cementitious material, wherein the supplementary cementitious material comprises an amorphous constituent of more than 30 wt % as measured by XRD, wherein the supplementary cementitious material comprises less than 70 wt % of inert components selected from the group comprising mullite, spinel, feldspar, diopside, mica, or combinations thereof, and wherein the color of the cement in the range of 130-160, 130-160, 120-160, wherein the measurement of the cement color is conducted by a RGB2 colorimeter, wherein the colors are referenced to a RGB scale of 0 to 255.
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公开(公告)号：US11280546B2
公开(公告)日：2022-03-22
申请号：US15765002
申请日：2016-10-05
发明人： Ziad Habib , Guilhem Padox
IPC分类号： F27B1/00 , C04B2/12 , F27B1/16 , F27D7/02 , F27B1/02 , F27B1/10 , F27B1/04 , F27B1/24 , C04B2/02 , F27B1/28
摘要： Process for calcining mineral rock in a regenerative parallel-flow vertical shaft furnace, containing at least two shafts (1, 2) interconnected by a gas transfer channel (3), each shaft operating alternately in firing mode and in preheating mode, the firing mode comprising a combustion of fuel in the presence of air so as to obtain a firing of the rock to give calcined rock, an emission of combustion gases, and a passage of these gases from one shaft to the other by means of said channel (3), the preheating mode comprising a heat exchange between said rock and said combustion gases from said channel (3), this process additionally comprising an injection of supplementary air into said channel (3) with oxidation of unburnt products contained in the combustion gases passing through this channel.
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公开(公告)号：US20210348848A1
公开(公告)日：2021-11-11
申请号：US17238537
申请日：2021-04-23
摘要： A carbon baking furnace has at least one vertical baking shaft with a system and method for positioning green carbon bodies to be baked at the top of the vertical baking path and ringing the green carbon bodies with a sacrificial medium such as packing coke. The disclosure provides a system and method for controlling the delivery and removal of the sacrificial medium used to surround the carbon bodies within the baking paths. A volatile extraction system and method are provided. A system and method for unloading baked carbon bodies is disclosed.
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公开(公告)号：US10356852B2
公开(公告)日：2019-07-16
申请号：US15115824
申请日：2015-01-30
IPC分类号： F27D13/00 , H05B6/02 , C21C5/56 , F27B3/18 , F27D3/10 , H05B6/06 , C21C5/52 , F27B1/00 , H05B7/00 , F27D3/00
摘要： Plant for melting metal materials comprising at least a heating unit (11) provided with a container (13) to contain the mainly metal materials and with at least an induction heating device (22) configured to heat the mainly metal materials contained in the container (13). The plant also comprises a transfer unit (25) disposed downstream of the heating unit (11) and configured to move, substantially continuously, the mainly metal solid materials exiting from the heating unit (11) to a melting furnace (12). The container (13) is provided with an aperture (16) through which the mainly metal material, heated and in a solid state, is discharged onto the transfer unit (25), and opening/closing members (17) are associated with the aperture (16), commanded by an actuator (19) and configured to open, close and choke the aperture (16) in order to regulate the delivery of the metal materials that is discharged onto the transfer unit (25).
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6.发明授权公开(公告)号：US10301219B2
公开(公告)日：2019-05-28
申请号：US14909687
申请日：2014-07-28
申请人： MAERZ OFENBAU AG
发明人： Hannes Piringer
摘要： Burning and cooling carbonate rock in cocurrent regenerative lime kilns may involve alternately operating two shafts such that a first shaft operates as a burning shaft and a second shaft operates as a regenerative shaft during a first period and such that the first shaft operates as the regenerative shaft and the second shaft operates as the burning shaft during a second period. Carbonate rock introduced to upper regions of the shafts may be preheated and calcined. The carbonate rock may then be cooled in lower regions of the shafts before being discharged through discharge devices. The cooling of the carbonate rock may comprise introducing cooling air into the shafts partially through central displacement bodies in the shafts and partially through the discharge devices. Amounts of air entering through the central displacement bodies compared to the discharge devices may vary widely from the burning shaft to the regenerative shaft.
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公开(公告)号：US10246386B2
公开(公告)日：2019-04-02
申请号：US15509902
申请日：2015-09-09
发明人： Zeeshan Nawaz
IPC分类号： B01J8/06 , C07C5/32 , C07C5/333 , C07C5/48 , F27B1/00 , F27B1/08 , F27B1/10 , F27D99/00 , B01J38/04 , B01J38/06 , B01J38/10 , B01J38/12 , B01J38/16 , B01J38/38 , B01J35/00 , B01J23/26 , B01J23/42 , B01J23/62 , B01J23/92 , B01J23/96 , B01J8/08
摘要： Systems for dehydrogenating an alkane are provided. An exemplary system includes a furnace and further includes alkane heating chambers, regeneration mixture heating chambers, and two groups of reaction chambers, all located within the furnace. The alkane heating chambers and regeneration mixture heating chambers can preheat an alkane feed and a regeneration mixture feed, respectively. The two groups of reaction chambers can be switchably coupled to an alkane feed and a regeneration mixture feed such that an alkane can flow through one group of reaction chambers while a regeneration mixture flows through the other group of reaction chambers. Processes for dehydrogenating an alkane are also provided.
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公开(公告)号：US10228189B1
公开(公告)日：2019-03-12
申请号：US14713510
申请日：2015-05-15
申请人： Rapid TPC, LLC
摘要： A heating system for heating composite materials includes a housing defining a cavity therein, a vertical conveyor system provided in the cavity of the housing for moving objects through the housing, and a heating arrangement provided in the housing for heating the objects that are moved through the housing. The heating arrangement may include at least one heating element provided in at least one of an upper portion of the housing and a lower portion of the housing. The heating arrangement may include at least one fan to circulate heated air generated by the heating arrangement throughout the cavity of the housing.
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9.发明申请公开(公告)号：US20180361395A1
公开(公告)日：2018-12-20
申请号：US15991690
申请日：2018-05-29
发明人： Yuexin HAN , Yanjun LI , Shuai YUAN , Peng GAO , Yongsheng SUN , Wenbo LI
摘要： The invention discloses a multi-stage suspension magnetizing roasting-magnetic separation system and method for refractory iron ore, which belongs to the field of mineral processing technology. This system comprises multistage suspension preheater, multistage suspension oxidizer, multistage suspension redactor, on-line grade analyzer, ore-like splitter, magnetic separator, dust remover, roots blower and other components and connection modes. The refractory iron ore treated by the present method can be produced to homogeneous magnetite or maghemite accurately, and through magnetic separation, on-line grade analyzer detection and ore-like splitter, the concentrate powder which reach the set grade can be obtained, and the unqualified ore powder enters the next stage of oxidation-reduction-magnetic separation-split treatment. Through the present system and method, products with different roasting quality can be obtained, and can avoid the phenomenon of over burning or under burning occurring in the past process and equipment.
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公开(公告)号：US20170171919A1
公开(公告)日：2017-06-15
申请号：US15115824
申请日：2015-01-30
CPC分类号： H05B6/02 , C21C5/5241 , C21C5/527 , C21C5/56 , C21C5/565 , F27B1/00 , F27B3/18 , F27D3/10 , F27D13/002 , H05B6/067 , H05B7/00 , Y02P10/216 , Y02P10/253
摘要： Plant for melting metal materials comprising at least a heating unit (11) provided with a container (13) to contain the mainly metal materials and with at least an induction heating device (22) configured to heat the mainly metal materials contained in the container (13). The plant also comprises a transfer unit (25) disposed downstream of the heating unit (11) and configured to move, substantially continuously, the mainly metal solid materials exiting from the heating unit (11) to a melting furnace (12). The container (13) is provided with an aperture (16) through which the mainly metal material, heated and in a solid state, is discharged onto the transfer unit (25), and opening/closing members (17) are associated with the aperture (16), commanded by an actuator (19) and configured to open, close and choke the aperture (16) in order to regulate the delivery of the metal materials that is discharged onto the transfer unit (25).
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