Removal of sand impurities in wet processing

Patent metadata

Field	Value
Publication number	US-11613496-B2
Application number	US-202117331254-A
Country	US
Kind code	B2
Filing date	May 26, 2021
Priority date	May 26, 2021
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

Methods and systems for treating mined sand to remove an impurity in accordance with the disclosure. An example method mined sand provides mined sand containing the impurity, contacting the mined sand with an aqueous treatment fluid comprising an ethoxylated alcohol and a sulfonic acid derivative, and drying the mined sand; wherein at least a portion of the impurity is removed from the dried mined sand after contact of the mined sand with the aqueous treatment fluid.

First claim

What is claimed is:

1. A method for treating mined sand to remove an impurity, the method comprising:
providing mined sand containing the impurity,
contacting the mined sand with an aqueous treatment fluid comprising an ethoxylated alcohol and a sulfonic acid derivative whereby the contacting the mined sand with the aqueous treatment fluid removes at least a portion of the impurity contained in the mined sand, and
drying the mined sand after contacting the mined sand with the aqueous treatment fluid.

2. The method of claim 1 , wherein the ethoxylated alcohol comprises an ethoxylated alcohol selected from the group consisting of nonyl phenol ethoxylate, dodecyl phenol ethoxylate, octyl phenol ethoxylate, tridecyl alcohol ethoxylate, oleyl alcohol ethoxylate, butanol ethoxylate, isodecyl alcohol ethoxylate, and any combination thereof.

3. The method of claim 1 , wherein the ethoxylated alcohol is present in the aqueous treatment fluid in a concentration of about 0.1 to about 10 gpt.

4. The method of claim 1 , wherein the sulfonic acid derivative comprises a sulfonic acid derivative selected from the group consisting of diisopropyl naphthalene sulfonic acid, dodecylbenzene sulfonic acid, alkylaryl sulfonic acid, methyl naphthalene sulfonic acid, toluene sulfonic acid, sodium dodecylbenzene sulfonate, TEA-dodecylbenzene sulfonate, isopropylamine dodecylbenzene sulfonate, sodium C14-16 alpha olefin sulfonate, linear sodium alkylbenzene sulfonate, calcium slate of DDBSA, sodium xylene sulfonate, slats thereof, and any combination thereof.

5. The method of claim 1 , wherein the sulfonic acid derivative is present in the aqueous treatment fluid in a concentration of about 0.1 to about 10 gpt.

6. The method of claim 1 , wherein the aqueous treatment fluid further comprises an acid.

7. The method of claim 6 , wherein the acid is present in the aqueous treatment fluid in a concentration of about 0.1 to about 10 gpt.

8. The method of claim 6 , wherein the acid further comprises an acid selected from the group consisting of hydrochloric acid, sulfuric acid, nitric acid, acetic acid, citric acid, phosphoric acid, and any combination thereof.

9. The method of claim 1 , wherein the impurity is an impurity selected from the group consisting of quartz, calcite, K-feldspar, plagioclase, clay, and any combination thereof.

10. The method of claim 1 , further comprising treating the mined sand prior to or during the passing of the mined sand through a cyclone.

11. The method of claim 1 , further comprising treating the mined sand prior to or during the passing of the mined sand through a screen.

12. The method of claim 1 , further comprising treating the mined sand prior to or during the passing of the mined sand through a pump.

13. The method of claim 1 , further comprising treating the mined sand prior to or during the passing of the mined sand through a separator.

14. A system for treating mined sand to remove an impurity, the system comprising:
mined sand containing the impurity,
an aqueous treatment fluid comprising an ethoxylated alcohol and a sulfonic acid derivative, wherein the aqueous treatment fluid is configured to contact the mined sand with the impurity and after this contact, a portion of the impurity contained in the mined sand is removed from the mined sand; and
a pump for pumping the mined sand.

15. The system of claim 14 , wherein the ethoxylated alcohol comprises an ethoxylated alcohol selected from the group consisting of nonyl phenol ethoxylate, dodecyl phenol ethoxylate, octyl phenol ethoxylate, tridecyl alcohol ethoxylate, oleyl alcohol ethoxylate, butanol ethoxylate, isodecyl alcohol ethoxylate, and any combination thereof.

16. The system of claim 14 , wherein the sulfonic acid derivative comprises a sulfonic acid derivative selected from the group consisting of diisopropyl naphthalene sulfonic acid, dodecylbenzene sulfonic acid, alkylaryl sulfonic acid, methyl naphthalene sulfonic acid, toluene sulfonic acid, sodium dodecylbenzene sulfonate, TEA-dodecylbenzene sulfonate, isopropylamine dodecylbenzene sulfonate, sodium C14-16 alpha olefin sulfonate, linear sodium alkylbenzene sulfonate, calcium slate of DDBSA, sodium xylene sulfonate, salts thereof, and any combination thereof.

17. The system of claim 14 , wherein the aqueous treatment fluid further comprises an acid selected from the group consisting of hydrochloric acid, sulfuric acid, nitric acid, acetic acid, citric acid, phosphoric acid, and any combination thereof.

18. The system of claim 14 , wherein the impurity is an impurity selected from the group consisting of quartz, calcite, K-feldspar, plagioclase, clay, and any combination thereof.

19. The system of claim 14 , further comprising a cyclone and wherein the mined sand is treated prior to or during the passing of the mined sand through the cyclone.

20. The system of claim 14 , further comprising a screen and wherein the mined sand is treating prior to or during the passing of the mined sand through the screen.

Assignees

• Halliburton Energy Services Inc

Inventors

• Li Chunli
• Li Leiming
• Hazlewood Johnathan S
• Xu Liang

Classifications

• C03C1/022 Primary

  Purification of silica sand or other minerals · CPC title

• B03B7/00

  Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage · CPC title

• B07B4/08

  while the mixtures are supported by sieves, screens, or like mechanical elements · CPC title

• B03B9/02

  specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like · CPC title

• B07B11/02

  Arrangement of air or material conditioning accessories · CPC title