Non-flotation based recovery of mineral bearing ore using hydrophobic particle collection in a pipeline section

Patent metadata

Field	Value
Publication number	US-11241700-B2
Application number	US-201716339836-A
Country	US
Kind code	B2
Filing date	Oct 10, 2017
Priority date	Oct 7, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Apparatus uses hydrophobic synthetic beads to recover mineral particles in a slurry. The synthetic beads and the slurry are mixed into a mixture for processing. The apparatus has an interaction vessel installed in a section of pipeline. The interaction vessel is made from a pipeline folded or coiled into a compact struction having a continuous flow path. The interaction vessel has an input to receive the mixture of slurry and synthetic beads. The folded or coiled structure is used to increase the residence time of the mixture in the flow path, allowing more time for the mineral particles in the slurry to attach to the surface of the synthetic bead, while maintaining a small footprint. The interaction vessel may be formed from a number of loops of pipe section. The interaction vessel may be formed from one or more folded structures.

First claim

What is claimed is:

1. An apparatus, comprising:
a plurality of synthetic beads; and
a fluid conduit arranged to receive a mixture of slurry to be mixed with the plurality of synthetic beads, the slurry comprising mineral particles and undesirable ore material, the fluid conduit also arranged to discharge enriched synthetic beads having mineral particles attached thereon, the synthetic beads having a surface functionalized with a hydrophobic material, wherein at least part of the fluid conduit is shaped into an interaction vessel, wherein a fluid path is defined by and is substantially equal to the length of said fluid conduit in said interaction vessel and the interaction vessel having a first vessel end errand a second vessel end, and wherein a distance between the first vessel end and the second vessel end is at least 6 times smaller than the fluid path in the fluid conduit in the interaction vessel.

2. The apparatus according to claim 1 , wherein said part of fluid conduit is coiled into a plurality of loops, said plurality of loops comprises n loop, with n being a positive number greater 2.

3. The apparatus according to claim 2 , wherein n=8 or greater.

4. The apparatus according to claim 2 , wherein said plurality of loops comprises continuous loops placed one on top of another.

5. The apparatus according to claim 2 , wherein said plurality of loops comprises circular or elliptical loops.

6. The apparatus according to claim 5 , wherein each of the circular loops has a diameter substantially equal to the distance between the first vessel end and the second vessel end.

7. The apparatus according to claim 5 , wherein each of the elliptical loops has a semi-miner axis and a semi-major axis, the semi-major axis is substantially equal to half of the distance between the first vessel end and the second vessel end.

8. The apparatus according to claim 1 , wherein said part of fluid conduit is folded into n folded structures, each folded structure comprising m conduit segments interconnected to provide a continuous path therein, each conduit segment having a segment length substantially equal to the distance between the first vessel end and the second vessel end, wherein n and m are positive numbers with n×m being greater than 6.

9. The apparatus according to claim 8 , wherein n is equal to 10 or greater, and m is equal to 10 or greater.

10. The apparatus according to claim 8 , wherein at least some of the conduit segments comprises a path extending structure therein for increasing the fluid path in the conduit segment.

11. The apparatus according to claim 1 , further comprising a mixing chamber, the mixing chamber comprising
a first input arranged to receive the slurry;
a second input arranged to receive the synthetic beads, and
an output arranged to provide the mixture of the slurry and synthetic beads to the first conduit end of the fluid conduit.

12. The apparatus according to claim 1 , wherein the second conduit end is further arranged to discharge the undesirable ore material in the slurry, said apparatus further comprising a separation device, the separation device having an input, a first output and a second output, the input arranged to receive a mixed material comprising the enriched synthetic beads having mineral particles attached thereon and the undesirable ore material, the separation device configured to separate the mixed material into a first separated part and a second separation part, wherein the first output is arranged to discharge the first separated part and the second output arranged to discharge the second separated part, wherein the first separated part comprises the enriched synthetic beads having mineral particles attached thereon, and the second separated part comprises the undesirable ore material.

13. The apparatus according to claim 12 , wherein the synthetic beads are buoyant as to water, and wherein the separation device comprises a flotation chamber having a lower part and an upper part, the lower part arranged to receive the mixed material and the upper part arranged to gather the enriched synthetic beads having mineral particles attached thereon for providing the first separated part.

14. The apparatus according to claim 1 , wherein the hydrophobic material is selected from the group consisting of polysiloxanes, poly(dimethylsiloxane), hydrophobically-modified ethyl hydroxyethyl cellulose, polysiloxanates, alkylsilane and fluoroalkylsilane.

15. The apparatus according to claim 14 , wherein the synthetic beads are made of an open-cell foam.

16. The apparatus according to claim 14 , wherein the synthetic beads have a substantially spherical shape.

17. The apparatus according to claim 14 , wherein the synthetic beads have a substantially cubic shape.

Assignees

• Cidra Corporate Services Llc
• Cidra Corporate Services Inc

Inventors

• Fernald Mark R
• Rothman Paul J
• Kersey Alan D

Classifications

• B03D1/02

  Froth-flotation processes · CPC title

• B03C1/01

  by addition of magnetic adjuvants · CPC title

• B03D1/016 Primary

  Macromolecular compounds · CPC title

• B03D2203/02

  Ores · CPC title

• B03C1/30

  Combinations with other devices, not otherwise provided for · CPC title