公开(公告)号：US3985857A

公开(公告)日：1976-10-12

申请号：US387191

申请日：1973-08-09

Applicant: Francisco Javier Sitges Menendez ,  Vicente Arregui Fernandez

Inventor： Francisco Javier Sitges Menendez ,  Vicente Arregui Fernandez

IPC: C22B19/20 ,  C01B20060101 ,  C01G9/00 ,  C01G9/06 ,  C01G49/00 ,  C01G49/14 ,  C22B20060101 ,  C22B3/00 ,  C22B3/04 ,  C22B7/00 ,  C22B19/00 ,  C22B19/02 ,  C22B19/30 ,  C25C1/16 ,  C22B19/22

CPC classification number: C22B19/22 ,  Y02P10/234

Abstract: The improvement in the process for recovering zinc from ferrites which includes treating electrolytic zinc plants residues with a sulfuric acid solution to dissolve the zinc and metals, a solution resulting which contains sulphates of zinc and the other dissolved metals. The undissolved residue is separated in a certain manner from the solution. The solids-free solution is neutralized in a second step with calcine or another neutralizing agent containing zinc until a certain acidity is reached so that the iron remaining in solution separates therefrom in the form of its complex basic sulfate. The solids are settled out and then sent to a neutralization step, which is part of the residue separation scheme, where they are used as seeds of crystals of complex basic sulfate of iron which helps to remove iron in the first neutralization step. This final solution is added to the normal circuit or process flow path of electrolytic zinc plants. Any Fe.sup.+.sup.+ existing or forming during the process is oxidized by MnO.sub.2.

Abstract translation: 从铁氧体中回收锌的方法的改进，其中包括用硫酸溶液处理电解锌工厂残留物以溶解锌和金属，产生含有硫酸锌和其它溶解金属的溶液。 未溶解的残余物以某种方式与溶液分离。 不含固体的溶液在第二步中用煅烧物或含锌的另一中和剂中和，直到达到一定的酸度，使得残留在溶液中的铁以其复合碱性硫酸盐的形式分离。 将固体沉淀出来，然后送入中和步骤，该中和步骤是残余物分离方案的一部分，其中它们用作在第一中和步骤中有助于除铁的复合碱式硫酸铁的晶体种子。 该最终解决方案被添加到电解锌厂的正常电路或工艺流程中。 在过程中存在或形成的任何Fe ++都被MnO2氧化。

公开(公告)号：US3905802A

公开(公告)日：1975-09-16

申请号：US47029874

申请日：1974-05-15

Applicant: DSO METALURGIA I RUDODOBIV BG1

Inventor： STOILOV IVAN KOSTADINOV ,  RALCHEV PENCHO IVANOV ,  KORUDANOV GEORGI NIKOLOV ,  STAREV LYUBEN RANGELOV ,  GRIGOROV IVAYLO YANEV ,  SHIKOV TODOR VASSILEV ,  KIREV KIRIL SPASSOV ,  ZASHEV IVAN ZAHARIEV ,  YOVKOV YOVKO NIKOLOV ,  APOSTOLOV KOSTADIN DIMITROV ,  IVANOV GEORGI ILIEV ,  MUTAFCHIEV STOYCHO IVANOV

IPC: C22B19/00 ,  C01G9/06 ,  C22B19/20

CPC classification number: C22B19/26 ,  C01G9/06 ,  Y02P10/234

Abstract: Method for the continuous separation of the solid phase in the purification of zinc sulphate solutions. The solutions are filtered on chamber disc filters under an elevated pressure up to 4 atm. The precipitate is removed mechanically from the filtering elements by the action of a strong jet of zinc sulphate solution at a temperature of 40*-60*C. The recovery of the filtrability of the filter cloth of the chamber disc filter is achieved by washing it with hot water. Chamber disc filter for carrying out the above method. The apparatus has a collector shaft with mounted collector tubes, filtering elements, clothed with a synthetic filtering cloth, a nozzle washing device, means for rotating the collector shaft and filtering elements, and a driven screw for collecting the separated solid phase, the pipe connecting the filtering elements with the collector shaft having section of above 13 mm.

Abstract translation: 硫酸锌溶液纯化中固相连续分离的方法。 将溶液在高达4个大气压的高压下在室盘式过滤器上过滤。 通过强烈喷射硫酸锌溶液在40°-60℃的温度下，从过滤元件机械地除去沉淀物。通过洗涤来实现室盘式过滤器的滤布的过滤性能的恢复 用热水。

公开(公告)号：US3434947A

公开(公告)日：1969-03-25

申请号：US3434947D

申请日：1965-12-29

Applicant: NORSKE ZINKKOMPANI AS

Inventor： STEINTVEIT GEORG

IPC: C22B19/20 ,  C01G1/10 ,  C01G9/00 ,  C01G9/06 ,  C22B3/00 ,  C22B3/04 ,  C22B3/08 ,  C22B19/00 ,  C22B19/32 ,  C25C1/06 ,  C22D1/24 ,  C22D1/22

CPC classification number: C22B17/04 ,  C01G1/10 ,  C01G9/06 ,  C22B3/08 ,  C22B19/26 ,  Y02P10/138 ,  Y02P10/234

公开(公告)号：US3434798A

公开(公告)日：1969-03-25

申请号：US3434798D

申请日：1965-09-20

Applicant: ASTURIENNE MINES COMP ROYALE

Inventor： MENENDEZ FRANCISCO JAVIER SITG ,  FERNANDEZ VICENTE ARREGUI

IPC: C22B19/20 ,  C01G9/00 ,  C01G9/06 ,  C08L23/02 ,  C22B19/00 ,  C22B19/04 ,  C22B19/28

CPC classification number: C22B19/04 ,  C01G9/00 ,  C01G9/06 ,  C22B19/22 ,  Y02P10/234

公开(公告)号：US12104224B2

公开(公告)日：2024-10-01

申请号：US18549540

申请日：2022-07-13

Applicant: Helios Project Ltd.

Inventor： Jonathan Hausner ,  Jonathan Geifman ,  Linoam Eliad ,  Yossi Gofer ,  Baruch Hirsh ,  Oran Lori

IPC: C22B5/18 ,  C21B15/00 ,  C22B15/00 ,  C22B19/20 ,  C22B23/02 ,  C22B26/10 ,  C22B34/32 ,  C22B47/00

CPC classification number: C22B5/18 ,  C21B15/00 ,  C22B15/0052 ,  C22B19/20 ,  C22B23/02 ,  C22B26/10 ,  C22B34/32 ,  C22B47/0036

Abstract: The present disclosure generally relates to processes for the reduction of transition metals using alkali metals to produce reduced transition metals.

公开(公告)号：US20230357888A1

公开(公告)日：2023-11-09

申请号：US18096641

申请日：2023-01-13

Applicant: Pyrogenesis Canada Inc.

Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

IPC: C22B21/00 ,  C22B7/00 ,  F27B17/00 ,  C22B5/00 ,  C22B3/00 ,  C22B19/20 ,  C22B7/04 ,  C22B9/05 ,  C22B21/06 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/20 ,  F27D3/16

CPC classification number: C22B21/0092 ,  C22B7/003 ,  F27B17/00 ,  C22B21/00 ,  C22B5/00 ,  C22B13/045 ,  C22B19/20 ,  C22B23/04 ,  C22B7/04 ,  C22B9/055 ,  C22B21/0069 ,  C22B21/064 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/2016 ,  F27D3/16 ,  Y02P10/20 ,  Y02P10/25 ,  F27D2003/163 ,  F27D2003/167

Abstract: A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt.

公开(公告)号：US11274047B2

公开(公告)日：2022-03-15

申请号：US16523408

申请日：2019-07-26

Applicant: KOREA RESOURCES CORPORATION

Inventor： Jeon Woong An ,  Youn Kyu Yi ,  Gwang Seop Lee ,  Young Hun Kim

IPC: C01G51/00 ,  C22B19/20 ,  C22B3/00 ,  C01G9/00

Abstract: Provided is a method for inhibiting extractant degradation comprising preparing step, extracting step and scrubbing step, the method including: (a) the preparing step of a DSX solvent by adjusting the extractant concentration of the DSX solvent to a specific range; (b) the extracting step of metal included in the feed solution by adjusting the ratio of the organic (solvent) and an aqueous (solution) as a feed solution; (c) the scrubbing step of adjusting the zinc concentration of the solution using zinc sulfate; and (d) stripping step.

公开(公告)号：US11254584B2

公开(公告)日：2022-02-22

申请号：US16523286

申请日：2019-07-26

Applicant: KOREA RESOURCES CORPORATION

Inventor： Jeon Woong An ,  Youn Kyu Yi ,  Young Hun Kim

IPC: C01G51/00 ,  C01G49/00 ,  C01G49/02 ,  C22B19/20 ,  C01G9/00 ,  C22B3/00 ,  C01F7/34

Abstract: Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.

公开(公告)号：US20210024367A1

公开(公告)日：2021-01-28

申请号：US16523286

申请日：2019-07-26

Applicant: KOREA RESOURCES CORPORATION

Inventor： Jeon Woong AN ,  Youn Kyu YI ,  Young Hun KIM

IPC: C01G51/00 ,  C01G49/00 ,  C01G49/02 ,  C01F7/34 ,  C01G9/00 ,  C22B3/00 ,  C22B19/20

Abstract: Provided is a method for inhibiting extractant degradation in the DSX process through the metal extraction control, the method comprising steps of: (a) adding limestone to a copper solvent extraction-raffinate to precipitate iron (Fe) and aluminum (Al) as a slurry, recovering a clarifying liquid; and (b) adding sulfuric acid to the recovered clarifying liquid to adjust the pH thereof.

公开(公告)号：US20200332392A1

公开(公告)日：2020-10-22

申请号：US16712810

申请日：2019-12-12

Applicant: Pyrogenesis Canada, Inc.

Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

IPC: C22B21/00 ,  C22B7/00 ,  F27B17/00 ,  C22B5/00 ,  C22B3/00 ,  C22B19/20 ,  C22B7/04 ,  C22B9/05 ,  C22B21/06 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/20 ,  F27D3/16

Abstract: A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.