Extracting mined ore, minerals or other materials using sensor-based sorting

• US 9,290,913 B2
• Filed: 12/29/2014
• Issued: 03/22/2016
• Est. Priority Date: 06/29/2011
• Status: Active Grant

• Current Assignee: MineSense Technologies Ltd.
• Original Assignee: MineSense Technologies Ltd.
• Inventors: Bamber, Andrew Sherliker, Houlahan, Darcy James
• Primary Examiner(s): LOGAN, KYLE O
• Application Number:
  US14/584,654
• Publication Number:
  US 20150108258A1
• Time in Patent Office: 449 Days
• Field of Search: 700/223
• US Class Current: 1/1
• CPC Class Codes: B02C 23/08 Separating or sorting of material, associated with crushing or disintegrating B02C23/18 takes precedence ; beater mills combined with sifting devices B02C13/13, B02C13/14; for tumbling mills B02C17/1835
• CPC Class Codes: B07C 5/00 Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches sorting by hand only B07C7/00; separating solids from solids by sieving, screening, or sifting or by using gas currents or other separating by dry methods applicable to bulk material B07B
• CPC Class Codes: B07C 5/344 according to electric or electromagnetic properties sorting according to size measured electrically or electronically B07C5/08; material testing by magnetic means G01N24/00, G01N27/00, by electrical means G01N27/00; electrical measuring devices in general G01R; coin testing G07D5/00
• CPC Class Codes: E02F 3/28 with digging tools mounted on a dipper- or bucket-arm , i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
• CPC Class Codes: E02F 3/40 Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets devices to connect tools to arms or booms E02F3/3604; teeth therefor E02F9/28
• CPC Class Codes: E02F 7/06 Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators for back-filling E02F5/226 takes precedence; separating equipment in general B03; delivery chutes in general B65G
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: E02F 9/265 with follow-up actions (e.g. control signals sent to actuate the work tool)
• CPC Class Codes: G01N 27/025 a current being generated within the material by induction
• CPC Class Codes: G01N 33/24 Earth materials G01N33/42 takes precedence

Abstract

A method of analyzing minerals received within a mining shovel bucket includes collecting data associated with ore received in the bucket, where the bucket includes at least one active sensor, where the ore includes one or more mineral, and where the ore is within a field of the active sensor. The method further includes determining a content of the minerals using the data, transmitting information relating to the content of the minerals to a decision support system, and sorting or processing the ore based on an output of the decision support system. Collecting data associated with the ores may include generating source signals, applying the source signals to the active sensor, collecting a response from the active sensor, and comparing the response with a reference or threshold. Other features are disclosed.

Claims

1. A mining apparatus comprising:

a bucket

configured to receive ore comprising one or more minerals;

an electromagnetic sensor system associated with the bucket for collecting data related to the ore,

wherein the electromagnetic sensor system comprises at least one active sensor coupled to an interior wall of the bucket, and

wherein the electromagnetic sensor system is configured to;

generate source signals,

apply the source signals to the at least one active sensor, and

collect a response to the source signals from the at least one active sensor in the presence of the ore; and

a data analysis system communicatively coupled to the electromagnetic sensor system and configured to;

compare the response of the at least one active sensor in the presence of the ore to the response of at least one reference sensor not in the presence of the ore, and

analyze the data to determine a content of the one or more minerals in the ore.

2. The mining apparatus of claim 1, further comprising a decision support system coupled to the data analysis system and configured to provide an output related to sorting and processing ore in response to the content of the one or more minerals.

3. The mining apparatus of claim 1, wherein each of the at least one active sensors comprises:

a coil wound from signal wire,

an upper electrostatic shield,

a lower electrostatic shield,

a molded casing, and

a shielded signal cable connecting the coil to a bridge network.

4. The mining apparatus of claim 1, wherein each of the at least one reference sensors comprises:

a coil wound from signal wire,

an upper electrostatic shield,

a lower electrostatic shield,

a molded casing, and

a shielded signal cable connecting the coil to a bridge network.

5. The mining apparatus of claim 1, wherein the decision support system comprises a user interface.

6. The mining apparatus of claim 1, wherein the source signals are generated using an arbitrary waveform generator,

wherein the electromagnetic sensor system is further configured to:

apply the source signals to the at least one reference sensor, and

collect a response to the source signals from the at least one reference sensor,

wherein the response to the source signals comprises impedance, and

wherein the impedance of the at least one active sensor is compared to the impedance of the at least one reference sensor.

7. A method of analyzing minerals received within a mining bucket, comprising:

collecting data associated with ore received in the bucket;

wherein the ore includes one or more mineral,

wherein the bucket includes at least one active sensor coupled to an interior wall of the bucket;

wherein the ore is within a field of the at least one active sensor, and

wherein collecting data associated with the ores comprises;

generating source signals,

applying the source signals to the at least one active sensor,

collecting a response to the source signals from the at least one active sensor, and

comparing the response of the at least one active sensor with a reference or threshold;

determining a content of the one or more mineral using the data.

8. The method of claim 7, wherein determining a content of the one or more minerals comprises:

performing spectral analysis on the data,

comparing the data with previously recorded data associated with minerals of known content, and

determining the content of the one or more minerals based on the comparison.

9. The method of claim 7, wherein collecting data associated with the ores further comprises:

applying the source signals to at least one reference sensor, and

collecting a response to the source signals from the at least one reference sensor,

wherein the response to the source signals comprises impedance, and wherein the reference comprises the impedance of the at least one reference sensor.

10. The method of claim 7, wherein the content of the minerals is determined in substantially real-time.

11. The method of claim 7,

further comprising:

transmitting information relating to the content of the one or more mineral to a decision support system; and

sorting or processing the ore based on an output of the decision support system in response to the transmitted information relating to the content of the one or more minerals.

12. The method of claim 11, wherein the decision support system comprises a user interface, and the method further comprises:

displaying the information relating to the content of the minerals on the user interface.

13. A method of extracting materials, comprising:

classifying mineral ore into a first group, a second group, and a waste group based on a grade of the mineral ore,

wherein the first group has a higher grade than the second group,

wherein the second group has a higher grade than the waste group;

separating the first group and the second group into first subgroups and second subgroups based on a particles size of the mineral ore,

wherein the first subgroup of the first group has a smaller particle size than the second subgroup of the first group, and

wherein the first subgroup of the second group has a smaller particle size than the second subgroup of the second group;

diverting the first subgroup of the first group and the first subgroup of the second group into a final product group;

sorting the second subgroup of the first group into a first sub-subgroup and a second sub-subgroup based on grade,

wherein the first sub-subgroup of the second subgroup of the first group has a higher grade than the second sub-subgroup of the second subgroup of the first group; and

diverting the first sub-subgroup of the second subgroup of the first group into the final product group.

14. The method of claim 13, wherein classifying mineral ore into a first group, a second group, and a waste group based on a grade of the mineral ore comprises determining the grade of the mineral ore using electromagnetic sensors.

15. The method of claim 13, wherein sorting the second subgroup of the first group into a first sub-subgroup and a second sub-subgroup based on grade comprises determining the grade of the mineral ore using electromagnetic sensors.

16. The method of claim 13, wherein classifying mineral ore into a first group, a second group, and a waste group based on a grade of the mineral ore comprises determining whether the grade of the mineral ore is higher or lower than a first threshold value and higher or lower than a second threshold value that is less than the first threshold value.

17. The method of claim 13, wherein sorting the second subgroup of the first group into a first sub-subgroup and a second sub-subgroup based on the grade of the mineral ore comprises determining whether the grade of the mineral ore is higher or lower than a third threshold value.

18. The method of claim 13, further comprising:

combining the second sub-subgroup of the second subgroup of the first group with the second subgroup of the second group to form a combined group;

sorting the combined group into a first group and a second group based on the grade of the mineral ore, wherein the first group has a higher grade than the second group; and

diverting the first group of the combined group into the final product group.

19. The method of claim 18, further comprising:

diverting the second group of the combined group into the waste group.

20. The method of claim 18, wherein sorting the combined group into a first group and a second group based on grade comprises determining the grade of the mineral ore using electromagnetic sensors.

21. The method of claim 18, wherein sorting the combined group into a first group and a second group based on the grade of the mineral ore comprises determining whether the grade of the mineral ore is higher or lower than a fourth threshold value.