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131.发明授权公开(公告)号：US11124858B2
公开(公告)日：2021-09-21
申请号：US17272437
申请日：2019-08-27
Applicant: FLSmidth A/S
Inventor： David J. Chaiko
Abstract: A method for removing sulfate iron-containing compounds from a low- to moderate-temperature metal sulfide leach circuit (1) is disclosed. A reactor (6) within a chloride leach circuit (5) and which is preferably maintained at a temperature between 20 and 150 degrees Celsius may be provided with a catalyst (4) comprising a material selected from the group consisting of: colloidal hematite, colloidal goethite, particulate containing FeOOH, particulate containing α-FeOOH, particulate containing γ-FeOOH, particulate containing Fe2O3, particulate containing α-Fe2O3, particulate containing γ-Fe2O3, particulate containing Fe3O4, particulate containing Fe(OH)SO4, and a combination thereof. The catalyst (4) may also be used with heap leach and/or dump leach circuits (22), without limitation. Methods for using and generating the catalyst (4) are also disclosed. In some embodiments, the catalyst (4) may be used as an anti-frothing agent (e.g., for zinc leaching, without limitation).
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132.发明申请公开(公告)号：US20210187517A1
公开(公告)日：2021-06-24
申请号：US16762783
申请日：2018-11-07
Applicant: FLSmidth A/S
Inventor： Mathew Walker
Abstract: The disclosure relates to an adapter (200) for converting a naturally-aspirated flotation cell (10) to a forced-gas flotation cell without replacing the naturally-aspirated flotation cell reducer (21) with a specialized conversion reducer (103). The adapter (200) is designed to be located below the naturally-aspirated flotation cell reducer (21) and at a location along the drive shaft. The adapter (200) comprises an outer static casing (201) having a forced gas inlet (210); an inner rotating spanner (204) having at least one port (205) therein; sealing means (203, 224, 225, 226) provided between the static casing (201) and the spanner (204); and, a chamber (213) formed between the outer static casing (201) and the spanner (204). Related methods and apparatus incorporating the adapter (200) are further disclosed.
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公开(公告)号：US20210130129A1
公开(公告)日：2021-05-06
申请号：US16500951
申请日：2018-04-04
Applicant: FLSMIDTH A/S
Inventor： Donald Todd Kennedy , Henry T. Laarakker , Marcus Thiesen
IPC: B66B5/22
Abstract: The disclosure relates to a mine shaft conveyance safety brake for controlling the rate of deceleration of a free-falling conveyance, operating within or upon fixed shaft guides, in a vertical, substantially vertical or inclined mine shaft. The safety brake includes an activation system, one or more guide clamp assemblies operable for locking onto one or more shaft guides, one or more braking assemblies and one or more brake paths attached upon the conveyance. Upon detection of a conveyance suspension failure or slack rope condition associated with a free-falling or obstructed condition of the conveyance, the activation system is triggered, causing each guide clamp assembly to self-lock onto a shaft guide. Upon further downward travel of the conveyance, the braking assemblies travel upwardly upon the brake paths, generating increasing braking forces in a controlled manner until the conveyance comes to a controlled stop. The safety brake is purely mechanical in nature, as there are no electronics, electro-mechanical controls or hydraulic systems involved.
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公开(公告)号：US10974992B2
公开(公告)日：2021-04-13
申请号：US16643190
申请日：2018-08-29
Applicant: FLSmidth A/S
Inventor： Damien Grévain , Mads Nielsen
Abstract: A system for reducing NOx emission levels during the manufacture of cement clinker having a calciner unit with the following features: an upper portion; a lower portion; a NOx reduction zone in the lower portion; a tertiary air inlet in the upper portion for introducing tertiary air into the upper portion; a main calciner meal inlet located above the NOx reduction zone for introducing a main calciner meal portion into the upper portion; a first cooling calciner meal inlet located in the NOx reduction zone for introducing a first cooling calciner meal portion into a periphery of the NOx reduction zone; and a fuel inlet located in or below the NOx reduction zone for introducing fuel into the reduction zone.
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公开(公告)号：US10751725B2
公开(公告)日：2020-08-25
申请号：US16469720
申请日：2017-12-14
Applicant: FLSmidth A/S
Inventor： Peter Weller , Eduardo Hurtado
Abstract: Driving arrangement for a heavy-duty grinding mill (50) having a horizontal tube with a circumferential girth gear (51), comprising a driving assembly, comprising a motor (10); at least two engaging pinions (42, 44) configured to engage the girth gear (51) for driving the grinding mill (50); at least one gearbox (20) comprising an input shaft (22) for coupling the motor (10) with the at least one gearbox (20), at least two output shafts (31, 32) for coupling the gearbox (20) with the at least two engaging pinions (42, 44) and a torque split arrangement being configured to transmit torque of the input shaft (22) to the at least two output shafts (31, 32); and at least one frame (48) for supporting the at least two engaging pinions (42, 44) separate from the gearbox (20), and a heavy-duty grinding mill.
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Patent Agency Ranking
公开(公告)号：US10689732B2
公开(公告)日：2020-06-23
申请号：US16465856
申请日：2017-11-30
Applicant: FLSmidth A/S
Inventor： David John Chaiko , Frank Baczek , Sara (Sally) Rocks
Abstract: A method of controlling iron in a hydrometallurgical process is disclosed. The method may comprise the steps of: leaching (14, 114) a feed slurry (2, 102); forming a pregnant leach solution (12a, 12b; 112a, 112b); removing a first leach residue (18, 118) from the pregnant leach solution (12a, 12b); and sending a portion (12b, 112b) of the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom, to an iron removal process (34, 134). According to some preferred embodiments, the iron removal process (34, 134) may comprise the steps of: sequentially processing the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom in a first reactor (R1) a second reactor (R2), and a third reactor (R3); maintaining a pH level of the first reactor (R1) above 4, by virtue of the addition of a first base; maintaining a pH level of the second (R2) and/or third (R3) reactors above 8.5, by virtue of a second base; and forming solids (46) comprising magnetite (68). The method may further comprise the steps of performing a solid liquid separation step (36) after the iron removal process (34, 134); and performing a magnetic separation step (64) to remove magnetite (68) from said solids comprising magnetite (68), without limitation. A system for performing the method is also disclosed.
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公开(公告)号：US20190358640A1
公开(公告)日：2019-11-28
申请号：US16469720
申请日：2017-12-14
Applicant: FLSmidth A/S
Inventor： Peter Weller , Eduardo Hurtado
Abstract: Driving arrangement for a heavy-duty grinding mill (50) having a horizontal tube with a circumferential girth gear (51), comprising a driving assembly, comprising a motor (10); at least two engaging pinions (42, 44) configured to engage the girth gear (51) for driving the grinding mill (50); at least one gearbox (20) comprising an input shaft (22) for coupling the motor (10) with the at least one gearbox (20), at least two output shafts (31, 32) for coupling the gearbox (20) with the at least two engaging pinions (42, 44) and a torque split arrangement being configured to transmit torque of the input shaft (22) to the at least two output shafts (31, 32); and at least one frame (48) for supporting the at least two engaging pinions (42, 44) separate from the gearbox (20), and a heavy-duty grinding mill.
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公开(公告)号：US10391501B2
公开(公告)日：2019-08-27
申请号：US15503431
申请日：2015-09-18
Applicant: FLSMIDTH A/S , Roald Sogno
Inventor： David Dustin Udy , Roald Sogno
Abstract: A roller press includes a frame assembly and a force generation device. The force generation device is configured to move so that it is removable when top members of the frame assembly are connected to the side members of the frame assembly and fixed in a closed horizontal position. The connection device for attaching the force generation device to the frame assembly includes a mounting plate and a hinge or sliding device.
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公开(公告)号：US20180243746A1
公开(公告)日：2018-08-30
申请号：US15753918
申请日：2016-11-23
Applicant: FLSmidth A/S
Inventor： David Udy
CPC classification number: B02C4/02 , B02C4/28 , B02C4/32 , B02C4/42 , B02C23/04 , B30B3/04 , B30B15/04 , F16C13/00 , F16C13/02
Abstract: A comminution device configured to comminute material is disclosed. According to some embodiments the comminution device may comprise a first cylindrical roll having a first axis; and a second cylindrical roll having a second axis; wherein the first axis may be substantially parallel with the second axis to form a nip between the first cylindrical roll and the second cylindrical roll during operation of the comminution device. A first drive 50 may be operatively connectable to the first cylindrical roll, and a second drive 50 may be operatively connectable to the first cylindrical roll. The first drive 50 and the second drive 50 may be connected to a mount 10; wherein the mount 10 may be supported by an upper base 30. The mount 10 is movable along a direction (A-Axis), which is substantially parallel with the first and/or second axis. Also disclosed, is a drive assembly 1 for a comminution device and a method of removing a drive assembly 1 from a comminution device.
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公开(公告)号：US20180118617A1
公开(公告)日：2018-05-03
申请号：US15573040
申请日：2016-05-09
Applicant: FLSmidth A/S
Inventor： Hisham Omar
CPC classification number: C04B7/364 , B01D53/002 , B01D53/56 , B01D53/78 , B01D53/79 , B01D2251/2062 , B01D2251/2067 , B01D2257/2025 , B01D2257/2064 , B01D2257/302 , B01D2257/404 , B01D2257/602 , B01D2258/0233 , B01D2259/124 , F23J15/06 , F23J2215/10 , F27B7/2016 , F27D17/008
Abstract: Disclosed is a bypass system for use with off gases that have exited a cement kiln utilized in a cement making process. The bypass system is adapted to remove both NOx and volatile components that are present in the off gases while the off gases are in the bypass duct.
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