公开(公告)号：US20230373853A1

公开(公告)日：2023-11-23

申请号：US18247805

申请日：2021-10-05

申请人： KHD HUMBOLDT WEDAG GMBH

发明人： Marc FEISS

IPC分类号： C04B7/44 ,  C04B7/43 ,  C04B7/47

CPC分类号： C04B7/4476 ,  C04B7/432 ,  C04B7/475

摘要： A method for the thermal treatment of clays by: preheating the clay, which is suspended in a carrier gas, in a heat exchanger; thermally treating the clay in a calcination stage operated under chemically oxidizing conditions; subsequently thermally treating the clay in a calcination stage operated under chemically reducing conditions; cooling the clay in a cooling stage operated under chemically reducing conditions; cooling the clay in a cooling stage operating under chemically oxidizing conditions.

公开(公告)号：US20230278934A1

公开(公告)日：2023-09-07

申请号：US18102682

申请日：2023-01-27

申请人： Magnum Cementing Services Operations Ltd.

发明人： Shaun T. Mesher

IPC分类号： C04B40/02 ,  C04B7/52 ,  C04B7/51 ,  C04B7/44 ,  C04B7/47 ,  C04B7/42 ,  C04B22/06 ,  C04B22/12 ,  C04B28/02 ,  C09K8/46

CPC分类号： C04B40/0231 ,  C04B40/0281 ,  C04B7/52 ,  C04B7/51 ,  C04B7/44 ,  C04B7/47 ,  C04B7/427 ,  C04B22/064 ,  C04B22/12 ,  C04B28/02 ,  C09K8/46 ,  C04B2111/74

摘要： A method of carbonating cement powder and use thereof. An amount of water is supplied to an initial cementitious powder to create a moistened cementitious powder. Carbon dioxide is supplied to the moistened cementitious powder, while mechanically stirring the moistened cementitious powder, to cause a reaction of the carbon dioxide with the moistened cementitious powder to produce a carbonated cementitious material. The carbonated cementitious material is dried and ground to produce a carbonated cementitious powder. The carbonated cementitious powder may be combined with ordinary cement and various ingredients or additives, such as retarders, accelerators and extenders for use in well cementing applications. Methods for cementing casing, liners and remedial operations such as plugging back, and squeeze cementing are also provided. Methods for producing a low alkaline cement suitable for high CO2 gas wells are also provided. Methods to achieve a stable retarded cement used in higher temperatures are provided.

公开(公告)号：US20230150871A1

公开(公告)日：2023-05-18

申请号：US17916966

申请日：2021-03-25

申请人： thyssenkrupp Industrial Solutions AG

发明人： Thomas LAPPE ,  Eike WILLMS

IPC分类号： C04B7/47 ,  C04B7/44 ,  C04B7/43

CPC分类号： C04B7/47 ,  C04B7/4415 ,  C04B7/434

摘要： A process for producing cement clinker may involve preheating raw meal in a preheater, calcining the preheated raw meal in a calciner, burning the preheated and calcined raw meal in a furnace to give cement clinker, cooling the cement clinker in a cooler, branching off a portion of the furnace offgases flowing out of the furnace as bypass gas, cooling the bypass gas in a mixing chamber with a cooling gas, and separating out dust present in the bypass gas. The cooling gas is formed at least partly or completely from the bypass gas and/or the calciner offgas and/or the preheater offgas. The cooling gas is introduced into the mixing chamber in a ratio of 2-10:1 relative to the bypass gas.

公开(公告)号：US20230145917A1

公开(公告)日：2023-05-11

申请号：US17916636

申请日：2021-04-06

申请人： thyssenkrupp Industrial Solutions AG

发明人： Eike WILLMS ,  Oliver MAIER

IPC分类号： C04B7/43 ,  C04B7/44 ,  C04B7/47 ,  F27D19/00 ,  F27B7/42

CPC分类号： C04B7/432 ,  C04B7/434 ,  C04B7/4407 ,  C04B7/47 ,  F27D19/00 ,  F27B7/42 ,  F27D2019/0018 ,  F27M2003/03 ,  F27D2019/0043 ,  F27D2019/004

摘要： A process for producing cement clinker, may involve preheating raw meal in a preheater, calcining the preheated raw meal in a calciner, and burning the preheated and calcined raw meal in a furnace to give cement clinker. The furnace may be supplied with a combustion gas having an oxygen content, and the temperature within the furnace is ascertained. The process may involve cooling the cement clinker in a cooler. The oxygen supply to the furnace is under closed-loop control as a function of the temperature ascertained within the furnace. The temperature ascertained is compared with a target value and, in the event of any variance of the temperature ascertained from the target value, the oxygen supply to the furnace and/or to the calciner is increased or decreased. The target value is adjusted depending on a particle size distribution and/or a lime standard.

公开(公告)号：US11639311B2

公开(公告)日：2023-05-02

申请号：US16690505

申请日：2019-11-21

申请人： KNAUF INSULATION

发明人： Gerard Demott ,  Bostjan Marolt ,  David Ducarme

IPC分类号： C04B7/34 ,  C04B7/32 ,  C04B7/44 ,  C04B7/47 ,  F27B14/08 ,  F27D15/02 ,  C04B7/00 ,  C04B28/00 ,  C04B32/00 ,  C04B7/36 ,  C04B11/28 ,  C04B28/06 ,  F27B14/14 ,  F27B14/10 ,  F27D27/00 ,  F27D99/00

摘要： High alumina cement is produced in a submerged combustion melter, cooled and ground.

公开(公告)号：US20230002277A1

公开(公告)日：2023-01-05

申请号：US17781634

申请日：2020-12-18

申请人： HOLCIM TECHNOLOGY LTD

发明人： Michael WEIHRAUCH ,  Ernst BUCHER ,  Andreas SPULER ,  Peter KRUSPAN ,  Rudy BLUM

IPC分类号： C04B7/47 ,  C04B7/43 ,  C04B7/44 ,  C04B7/52 ,  F27B7/20 ,  F27D17/00

摘要： A method of producing cement clinker and a second calcined material, wherein the cement clinker is produced in a first production line and the second calcined material is produced from a raw material in a second production line by carrying out the following procedures e) optionally drying the raw material in a dryer, g) calcining the optionally dried raw material in a rotary kiln to obtain the second calcined material, wherein the sensible heat of a hot gas in the first production line is used as a heat source in the calcining step g) for calcining the raw material, and wherein the rotary kiln exhaust gas coming from the calcining step g) is introduced into the first production line for the secondary combustion of the rotary kiln exhaust gas.

公开(公告)号：US11384017B2

公开(公告)日：2022-07-12

申请号：US16754411

申请日：2018-10-02

申请人： HConnect 2 GmbH

发明人： Jan Skocek ,  Maciej Zajac ,  Gerd Bolte ,  Mohsen Ben Haha

IPC分类号： C04B28/02 ,  C04B7/44 ,  C04B7/47 ,  C04B7/52 ,  C04B40/00 ,  C04B40/02

摘要： A method for manufacturing a binder of a hydratable material includes providing a starting material from one or more raw materials convertible by tempering at 600 to 1200° C. into the hydratable material, tempering the starting material to provide the hydratable material containing not more than 10% by weight monocalcium silicate and at least 15% by weight hydratable phases in the form of lime and dicalcium silicate, wherein the residence time and the tempering temperature are adapted to obtain the hydratable material by converting not more than 80% by weight of the starting material, and cooling the hydratable material to provide the binder comprising the hydratable material. The binder can be mixed with water and optionally one or more of aggregate, additives, admixtures to obtain a binder paste that is placed, hydrated and carbonated to produce a building product.

公开(公告)号：US10989476B2

公开(公告)日：2021-04-27

申请号：US17089320

申请日：2020-11-04

申请人： Alite GmbH

发明人： Jörg Hammerich

IPC分类号： B65G25/06 ,  C04B7/47 ,  F27D15/02

摘要： A conveyor grate for conveying bulk material (preferably cement clinker) in a conveying direction, which has at least two conveying means and at least one motor for advancing such conveying means in the conveying direction and for retracting the conveying means, The grate can be installed and operated at reduced costs, if a first of these conveying means is coupled via a first clutch to the motor and a second of these conveying means is coupled via a second clutch to the same motor.

公开(公告)号：US10935319B2

公开(公告)日：2021-03-02

申请号：US16067171

申请日：2017-01-20

申请人： FLSmidth A/S

发明人： Jesper Lebæk ,  Morten Drivsholm ,  Linda Kaare Nørskov ,  Henrik Wassard ,  Klaus Hjuler

IPC分类号： F27B7/20 ,  C04B7/44 ,  F23B50/10 ,  F23G5/027 ,  F23G5/24 ,  C04B7/47 ,  F27B7/02

摘要： A method to thermally convert alternative fuels within a loop seal reactor by utilizing preheated/calcined cement meal as the heat source within which alternative fuels are immersed, subjected to drying, pyrolysis and subsequently charred, and an apparatus utilized to practice such method.

公开(公告)号：US20200161014A1

公开(公告)日：2020-05-21

申请号：US16195021

申请日：2018-11-19

申请人： KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY

发明人： Do Gyeum KIM ,  Eun A Seo

IPC分类号： G21F9/30 ,  C04B7/44 ,  C04B7/47 ,  C04B28/14

摘要： In accordance with the present invention, provided is a method for producing a solidifying material for radioactive waste disposal, the method including a first step (S100) of pulverizing radioactive concrete waste and separating aggregates and paste and a second step (S200) of using the paste to produce a solidifying raw material, wherein the second step (S200) includes a calcination treatment step (S210) of calcining a mixture obtained by mixing an additional material with the paste; a sintering treatment step (S220) of sintering the mixture in a sintering furnace after the calcination treatment step (S210); and a rapid-cooling treatment step (S230) of rapid-cooling the mixture after the sintering treatment step (S220) to produce a clinker.