Opportunities for recovery augmentation process as applied to molybdenum production

Patent metadata

Field	Value
Publication number	US-12123075-B2
Application number	US-202017001844-A
Country	US
Kind code	B2
Filing date	Aug 25, 2020
Priority date	Oct 16, 2015
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A copper/molybdenum separation processor is provide featuring a slurry/media mixture stage configured to receive a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron and other minerals that is conditioned with sodium hydrosulfide together with an engineered polymeric hydrophobic media, and provide a slurry/media mixture; and a slurry/media separation stage configured to receive the slurry/media mixture, and provide a slurry product having a copper concentrate and a polymerized hydrophobic media product having a molybdenum concentrate that are separately directed for further processing. The slurry/media mixture stage include a molybdenum loading stage configured to contact the conditioned pulp with the engineered polymeric hydrophobic media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered polymeric hydrophobic media.

First claim

What is claimed is:

1. A method for separating copper and molybdenum comprising:
configuring a copper and molybdenum separation processor with a slurry and media mixture stage and slurry and media separation stage;
receiving in the slurry and media mixture stage a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron and other minerals that is conditioned with sodium hydrosulfide together with an engineered polymeric hydrophobic media, and providing a slurry and media mixture;
receiving in the slurry and media separation stage the slurry and media mixture, and providing a slurry product having a copper concentrate and a polymerized hydrophobic media product having a molybdenum concentrate that are separately directed for further processing; and
directing with a media recovery stage forming part of the slurry and media separation stage the slurry product having the copper concentrate to a copper concentrate filtration stage and the polymerized hydrophobic media product to a media wash stage, the copper concentrate filtration stage having filters configured to provide the copper concentrate, and wherein the copper concentrate comprises the hydrophilic copper, and the polymerized hydrophobic media product comprises the engineered polymeric hydrophobic media loaded with hydrophobic molybdenite.

2. A method according to claim 1 , wherein the method further comprises configuring the slurry and media mixture stage with a molybdenite loading stage to contact the conditioned pulp with the engineered polymeric hydrophobic media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered polymeric hydrophobic media.

3. A method according to claim 1 , wherein the method further comprises configuring the slurry and media separation stage with a media recovery stage comprising a vibrating screen, rotating trommel, or separation device, to filter, separate and direct the slurry product having a copper concentrate to a copper concentrate filtration stage and the polymerized hydrophobic media product to a wash stage.

4. A method according to claim 1 , wherein the method further comprises configuring the slurry and media mixture stage with a molybdenum loading stage to contact the conditioned pulp with the engineered polymeric hydrophobic media in an agitated reaction chamber, load the hydrophobic molybdenite on the engineered polymeric hydrophobic media, direct the slurry product to a copper concentrate filtration stage and direct remaining load polymeric hydrophobic media in the slurry and media mixture to a media wash stage.

5. A method according to claim 2 , wherein the agitated reaction chamber comprises, or takes the form of, a tumbler-style reaction chamber, or a mechanical, rotating or tumbling, gravity flow, chemical, pneumatic, centrifugal reaction chamber.

6. A method according to claim 3 , wherein the method comprises configuring the copper and molybdenum separation processor with the media wash stage using a vibrating screen or trommel equipped with wash water sprays, to clean the polymerized hydrophobic media product, eliminate entrainment of hydrophilic particles, and provide washed engineered polymeric hydrophobic media.

7. A method according to claim 6 , wherein the method comprises configuring the media wash stage to advance the washed polymerized hydrophobic media to a media stripping stage, and return a wash solution, containing any residual hydrophilic particles, to a copper and molybdenum thickening stage that forms part of the slurry and media mixture stage.

8. A method according to claim 6 , wherein the method comprises configuring the copper and molybdenum separation processor with a media stripping stage to receive the washed engineered polymeric hydrophobic media, remove loaded hydrophobic minerals from the washed engineered polymeric hydrophobic media using a strip solution or surfactant, and provide washed and stripped engineered polymeric hydrophobic media.

9. A method according to claim 8 , wherein the method comprises configuring the copper and molybdenum separation processor with a media recovery stage of comprising a screen or trommel, to
receive the washed and stripped engineered polymeric hydrophobic media in the form of a slurried mixture of stripped media, recovered hydrophobic particles and residual strip solution,
recycle recovered, washed and stripped polymeric hydrophobic media to a molybdenite loading stage that forms part of the slurry and media mixture stage,
filter and direct residual slurry having the molybdenum concentrate to a moly filtration stage; and
recycle recovered stripping solution to the stripping stage.

10. A method according to claim 9 , wherein the method comprises configuring the copper and molybdenum separation processor with the moly filtration stage to receive the molybdenum concentrate and provide filtered molybdenum concentrate.

11. A method according to claim 3 , wherein the method comprises configuring the copper and molybdenum separation processor with the copper concentrate filtration stage to receive the slurry product and provide a filtered slurry product having a filtered copper concentrate.

12. A method according to claim 1 , wherein the method comprises forming the conditioned pulp in part from a pulp that is thickened by a copper and molybdenum concentrate thickening stage configured upstream copper and molybdenum separation processor.

13. A method according to claim 4 , wherein the method comprises configuring the copper and molybdenum separation processor with the media wash stage comprising a wash stage vibrating screen or trommel equipped with wash water sprays, to clean the remaining loaded engineered polymeric hydrophobic media, eliminate entrainment of hydrophilic particles, and provide washed engineered polymeric hydrophobic media.

14. A method according to claim 13 , wherein the method comprises configuring the media wash stage to advance the washed engineered polymeric hydrophobic media to a media stripping stage, and return a wash solution, containing any residual hydrophilic particles, to a copper and molybdenum thickening stage that forms part of the slurry and media mixture stage.

15. A method according to claim 14 , wherein the method comprises configuring the copper and molybdenum separation processor with a media stripping stage to receive the washed engineered polymeric hydrophobic media, remove loaded hydrophobic minerals from the washed engineered polymeric hydrophobic media using a strip solution or surfactant, and provide washed and stripped engineered polymeric hydrophobic media.

16. A method according to claim 15 , wherein the method comprises configuring the copper and molybdenum separation processor with a media recovery stage comprising a screen or trommel, to
receive the washed and stripped engineered polymeric hydrophobic media in the form of a slurried mixture of stripped media, recovered hydrophobic particles and residual strip solution,
recycle recovered, washed and stripped engineered polymeric hydrophobic media to the molybdenum loading stage,
filter and direct residual slurry having the molybdenum concentrate to the moly filtration stage; and
recycle recovered stripping solution to the stripping stage.

17. A method according to claim 16 , wherein the method comprises configuring the copper and molybdenum separation processor with the moly filtration stage to receive the molybdenum concentrate and provide filtered molybdenum concentrate.

18. A method according to claim 1 , wherein the method comprises configuring

Assignees

• Cidra Corporate Services Llc
• Cidra Corporate Services Inc

Inventors

• Rothman Paul J
• Fernald Mark R
• Amelunxen Peter A

Classifications

• Y02P10/20

  Recycling · CPC title

• C22B15/0089

  by chemical methods · CPC title

• C22B3/44

  by chemical processes (treatment or purification of solutions by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42) · CPC title

• C01G39/06

  Sulfides · CPC title

• C01G39/003

  Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange · CPC title