CN114130546A - Method for enriching metal sulfide ore by intensified froth flotation method - Google Patents
Method for enriching metal sulfide ore by intensified froth flotation method Download PDFInfo
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- CN114130546A CN114130546A CN202111408805.6A CN202111408805A CN114130546A CN 114130546 A CN114130546 A CN 114130546A CN 202111408805 A CN202111408805 A CN 202111408805A CN 114130546 A CN114130546 A CN 114130546A
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- Prior art keywords
- ore
- flotation
- froth flotation
- metal sulfide
- axial pulse
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000009291 froth flotation Methods 0.000 title claims abstract description 19
- 229910052976 metal sulfide Inorganic materials 0.000 title claims abstract description 16
- 238000005188 flotation Methods 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 12
- 239000011707 mineral Substances 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 239000012141 concentrate Substances 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 9
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000012991 xanthate Substances 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000001143 conditioned effect Effects 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- YIBBMDDEXKBIAM-UHFFFAOYSA-M potassium;pentoxymethanedithioate Chemical compound [K+].CCCCCOC([S-])=S YIBBMDDEXKBIAM-UHFFFAOYSA-M 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- FLVLHHSRQUTOJM-UHFFFAOYSA-M sodium;2-methylpropoxymethanedithioate Chemical compound [Na+].CC(C)COC([S-])=S FLVLHHSRQUTOJM-UHFFFAOYSA-M 0.000 claims description 5
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 9
- 150000001768 cations Chemical class 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical group [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for enriching metal sulfide ores by a reinforced froth flotation method, and belongs to the technical field of mineral processing technology. The method comprises the following steps: suspending the sulphide ore in water and grinding to a particle size P80 of 200 μm, thereby forming a pulp; enriching the ore pulp with required minerals by froth flotation; and applying radial air stirring and axial pulse to the ore dressing tank for radial stirring and axial pulse, wherein the radial air stirring is 300-350r/min, and the axial pulse strength is 0.05-0.5 MPa. The invention applies radial air stirring and axial pulse to improve the stability of foam in the early stage of flotation operation, and acts on the ore pulp through the acting force of the radial air stirring and the axial pulse, thereby increasing the collision probability between hydrophobic particles and bubbles, improving the number of the hydrophobic particles adhered to the bubbles, reducing the flotation cost and having important significance for the popularization and the application of the cation flotation process.
Description
Technical Field
The invention relates to the technical field of mineral processing technology, in particular to a method for enriching metal sulfide ore by a reinforced foam flotation method.
Background
Froth flotation is a process of separation in a variety of different industries, and the most common way to recover the desired minerals from metal sulfide ores is by a procedure involving froth flotation, during which air is introduced into the slurry as microbubbles providing surfaces for attachment of relatively hydrophobic minerals. When the bubbles rise to the top of the container, a foam is formed. The froth may be arranged to overflow from a flotation vessel containing hydrophobic particles and hydrophilic particles. Those particles can be purified to a concentrate. Typically, in mineral froth flotation, hydrophobic particles are the desired product and attempts are made to recover the hydrophobic particles from the froth. Hydrophilic gangue particles are less adsorbed on the air bubbles and therefore tend to remain in the slurry. The gas flows through the slurry and through the selective adherence of the hydrophobic particles to the gas bubbles, while any hydrophilic particles retain the liquid flowing between the gas bubbles in the vessel to effect the separation. Foaming agents and pH modifiers are often used in practice to enhance separation. Collectors may also be introduced to help promote the attachment of minerals to the gas bubbles. In more complex flotation schemes, proper oxidation of the pulp is an important parameter in the flotation of complex metal sulphide ores. However, improper oxygen content can adversely affect separation and recovery. Therefore, the conditions under which the oxidation is carried out are very important to the ultimate success of the enrichment procedure. In addition, the pH of the slurry, the concentration of the various chemicals added to the flotation vessel, the concentration of solids, and the gas flow rate to the flotation vessel all affect the performance quality of the flotation process. However, the presence of such a large number of variables reduces the adaptability of the froth flotation process, and the amount or type of agent added is now also changed to counteract the change in the influencing parameters. However, these measures only lead to a limited maintenance of the foam product quality or separation efficiency.
Disclosure of Invention
The invention aims to provide a method for enriching metal sulfide ores by a reinforced foam flotation method, which improves the stability of foam in the early stage of flotation operation by applying radial air stirring and axial pulse, increases the collision probability between hydrophobic particles and bubbles by acting the acting force of the radial air stirring and the axial pulse on ore pulp, improves the number of the hydrophobic particles adhered to the bubbles, improves the separation effect of the flotation process, reduces the flotation cost and has important significance for the popularization and the application of a cation flotation process.
The invention specifically adopts the following technical scheme for realizing the purpose:
a method of enriching a metal sulfide ore by enhanced froth flotation, comprising the steps of:
s1: suspending the sulphide ore in water and grinding to a particle size P80 of 200 μm, thereby forming a pulp;
s2: enriching the pulp obtained in the step S1 with the required minerals through froth flotation; firstly, transferring the ore pulp obtained in the step S1 to a flotation tank, mixing for two minutes to homogenize, blowing air bubbles into the ore pulp through an air stirring device, and applying radial air stirring and axial pulse to the ore separation tank for radial stirring and axial pulse, wherein the radial air stirring is 300-350r/min, and the axial pulse strength is 0.05-0.5 MPa;
s3: the slurry from step S2 was conditioned for 10 minutes, the pH was maintained at 10.8 by the addition of lime, four concentrates were collected at 30 second, 1.5, 2.0 and 4.0 minute intervals for a total flotation time of 5 minutes, each concentrate was collected by scraping foam from the surface of the slurry by hand every 10 seconds, giving 12% Cu and 19% As.
Further, the sulfide ore used in step S1 is a copper sulfide ore, and the sulfide gangue is iron sulfide.
Further, in step S2, axial pulses are applied to the middle and upper and lower portions of the concentrate tank.
Further, in step S2, a xanthate collector was added in an amount of 3 grams per ton with radial air agitation applied and an axial pulse width of 20T/m.
Further, the xanthate collecting agent consists of potassium amyl xanthate and sodium isobutyl xanthate in a mass fraction ratio of 2: 1.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, radial air stirring and axial pulse are introduced, and the stirring speed and the axial pulse strength are regulated and controlled to improve the adaptability of the traditional foam flotation process, in the earlier stage of flotation operation, the radial air stirring can improve the stability of foam, the axial pulse can reduce the circulation amount of intermediate minerals, reduce the loss of useful minerals in tailings, and avoid agglomeration caused by adhesion of fine-fraction sulfide minerals and gangue minerals with strong activity under the condition of large dosage. The required sulfide ore can float sufficiently, the recovery rate of the sulfide ore is improved, the separation of copper and arsenic, antimony and bismuth is facilitated, the device is environment-friendly and pollution-free, the medicament consumption is saved, the flotation cost is reduced, the whole device is assembled in a modularized mode, and the industrial production is easy to realize.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
Example 1
The embodiment provides a method for enriching metal sulfide ores by using an intensified froth flotation method, which comprises the following steps: the mill ground porphyry copper in the presence of water to a particle size P80 of 200 μm. The ore is tested to obtain the ore containing the following components: 0.85% Cu, 20.3% Fe, 514ppm As, 0.37ppm Au, 125ppm Mo and 3.5% S. The resulting ore pulp was transferred to a flotation cell and mixed for two minutes for homogenization. Wherein the air stirring speed is 350r/min, and the axial pulse intensity is 0.5 MPa. Xanthate collectors, consisting of potassium amyl xanthate and sodium isobutyl xanthate in a mass ratio of 2:1, were added in an amount of 3 grams per ton under the application of radial air agitation and an axial pulse width of 20T/m. The pulp was then conditioned for 10 minutes. The pH was maintained at 10.8 by the addition of lime. Four concentrates were collected at 30 second, 1.5, 2.0 and 4.0 minute intervals for a total flotation time of 5 minutes. Each concentrate was collected by scraping the froth from the pulp surface by hand every 10 seconds to give a Cu of 12% and an As of 19%.
Example 2
The embodiment provides a method for enriching metal sulfide ores by using an intensified froth flotation method, which comprises the following steps: the mill ground porphyry copper in the presence of water to a particle size P80 of 200 μm. Extensive testing of the ore gave the following results: 0.85% Cu, 20.3% Fe, 514ppm As, 0.37ppm Au, 125ppm Mo and 3.5% S. The resulting ore pulp was transferred to a flotation cell and mixed for two minutes for homogenization. Under the conditions of applying radial air stirring and axial pulse, wherein the air stirring speed is 300r/min, and the axial pulse strength is 0.05 MPa. Xanthate collectors (2:1 potassium amyl xanthate and sodium isobutyl xanthate) were added in an amount of 3 grams per ton. The pulp was then conditioned for 10 minutes. The pH was maintained at 10.8 by the addition of lime. Four concentrates were collected at 30 second, 1.5, 2.0 and 4.0 minute intervals for a total flotation time of 5 minutes. Each concentrate was collected by scraping the froth from the pulp surface by hand every 10 seconds to give a Cu of 10.6% and an As of 37%.
Comparative test example
The experimental example provides a method for enriching metal sulfide ores by using a reinforced froth flotation method, which comprises the following steps: the mill ground porphyry copper in the presence of water to a particle size P80 of 200 μm. Extensive testing of the ore gave the following results: 0.85% Cu, 20.3% Fe, 514ppm As, 0.37ppm Au, 125ppm Mo and 3.5% S. The resulting ore pulp was transferred to a flotation cell and mixed for two minutes for homogenization. Under the condition of not applying radial air stirring and axial pulse, 3 g of xanthate collecting agent is added per ton, and the xanthate collecting agent is composed of potassium amyl xanthate and sodium isobutyl xanthate in a mass ratio of 2: 1. The pulp was then conditioned for 10 minutes. The pH was maintained at 10.8 by the addition of lime. Four concentrates were collected at 30 second, 1.5, 2.0 and 4.0 minute intervals for a total flotation time of 5 minutes. Each concentrate was collected by scraping the froth from the pulp surface by hand every 10 seconds to give 8.5% Cu and 41% As.
The above description is only exemplary of the invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the invention should be included in the protection scope of the invention.
Claims (5)
1. A method for enriching a metal sulfide ore by an enhanced froth flotation process, comprising the steps of:
s1: suspending the sulphide ore in water and grinding to a particle size P80 of 200 μm, thereby forming a pulp;
s2: enriching the pulp obtained in the step S1 with the required minerals through froth flotation; firstly, transferring the ore pulp obtained in the step S1 to a flotation tank, mixing for two minutes to homogenize, blowing air bubbles into the ore pulp through an air stirring device, and applying radial air stirring and axial pulse to the ore separation tank for radial stirring and axial pulse, wherein the radial air stirring is 300-350r/min, and the axial pulse strength is 0.05-0.5 MPa;
s3: the slurry from step S2 was conditioned for 10 minutes, the pH was maintained at 10.8 by the addition of lime, four concentrates were collected at 30 second, 1.5, 2.0 and 4.0 minute intervals for a total flotation time of 5 minutes, each concentrate was collected by scraping foam from the surface of the slurry by hand every 10 seconds, giving 12% Cu and 19% As.
2. The process for the enhanced froth flotation process for the enrichment of metal sulfide ores according to claim 1, wherein: the sulfide ore used in step S1 is a copper sulfide ore.
3. The process for the enhanced froth flotation process for the enrichment of metal sulfide ores according to claim 1, wherein: in step S2, axial pulses are applied to the middle and upper and lower portions of the concentrate launder.
4. The process for the enhanced froth flotation process for the enrichment of metal sulfide ores according to claim 1, wherein: in step S2, a xanthate collector was added in an amount of 3 grams per ton with radial air agitation applied and an axial pulse width of 20T/m.
5. The process for the enhanced froth flotation process for the enrichment of metal sulfide ores according to claim 4, wherein: the xanthate collecting agent consists of potassium amyl xanthate and sodium isobutyl xanthate in a mass fraction ratio of 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408805.6A CN114130546A (en) | 2021-11-24 | 2021-11-24 | Method for enriching metal sulfide ore by intensified froth flotation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408805.6A CN114130546A (en) | 2021-11-24 | 2021-11-24 | Method for enriching metal sulfide ore by intensified froth flotation method |
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| Publication Number | Publication Date |
|---|---|
| CN114130546A true CN114130546A (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111408805.6A Pending CN114130546A (en) | 2021-11-24 | 2021-11-24 | Method for enriching metal sulfide ore by intensified froth flotation method |
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| Country | Link |
|---|---|
| CN (1) | CN114130546A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2097753C1 (en) * | 1994-04-05 | 1997-11-27 | Александр Иванович Обручков | Method of rapidly determining sulfide ore oxidation degree |
| CN1761523A (en) * | 2003-03-14 | 2006-04-19 | 奥托昆普技术公司 | Method for controlling oxygen when separating minerals from a slurry |
| CN102989592A (en) * | 2012-12-13 | 2013-03-27 | 广西华锡集团股份有限公司 | Multi-air-stream pulse injection-type floatation machine |
| CN104080541A (en) * | 2012-01-27 | 2014-10-01 | 赢创德固赛有限公司 | Enrichment of metal sulfide ores by oxidant assisted froth flotation |
| CN112191370A (en) * | 2020-08-27 | 2021-01-08 | 中国恩菲工程技术有限公司 | Flotation method for copper minerals |
-
2021
- 2021-11-24 CN CN202111408805.6A patent/CN114130546A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2097753C1 (en) * | 1994-04-05 | 1997-11-27 | Александр Иванович Обручков | Method of rapidly determining sulfide ore oxidation degree |
| CN1761523A (en) * | 2003-03-14 | 2006-04-19 | 奥托昆普技术公司 | Method for controlling oxygen when separating minerals from a slurry |
| CN104080541A (en) * | 2012-01-27 | 2014-10-01 | 赢创德固赛有限公司 | Enrichment of metal sulfide ores by oxidant assisted froth flotation |
| CN102989592A (en) * | 2012-12-13 | 2013-03-27 | 广西华锡集团股份有限公司 | Multi-air-stream pulse injection-type floatation machine |
| CN112191370A (en) * | 2020-08-27 | 2021-01-08 | 中国恩菲工程技术有限公司 | Flotation method for copper minerals |
Non-Patent Citations (1)
| Title |
|---|
| 许孙曲: "脉冲对复杂硫化矿石浮选的影响" * |
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Application publication date: 20220304 |