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

• US 8,958,905 B2
• Filed: 06/29/2012
• Issued: 02/17/2015
• Est. Priority Date: 06/29/2011
• Status: Active Grant

• Current Assignee: MineSense Technologies Ltd.
• Original Assignee: MineSense Technologies Ltd.
• Inventors: Bamber, Andrew S., Houlahan, Darcy J.
• Primary Examiner(s): Crawford, Gene
• Assistant Examiner(s): LOGAN, KYLE O
• Application Number:
  US13/538,931
• Publication Number:
  US 20130026263A1
• Time in Patent Office: 963 Days
• Field of Search: 700/223
• US Class Current: 700/223
• 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 chassis;

an articulable arm operably coupled to the chassis;

a bucket rotatably connected to the arm and defining an interior cavity,

wherein the bucket is 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 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; and

a decision support system coupled to the data analysis system configured to provide an output related to sorting and processing ore in response to the content of the one or more minerals, the decision support system comprising a user interface and the user interface is configured to display a recommended action based on the content of the one or more minerals.

2. The mining apparatus of claim 1, wherein the mining apparatus is a mining vehicle and wherein the mining apparatus further comprises an operator cabin connected to an upper side of the chassis and receiving the user interface.

3. The mining apparatus of claim 1, wherein each of the at least one active sensors in an array 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 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.

6. The mining apparatus of claim 1, wherein the sensor system is coupled to a computing device disposed within the operator'"'"'s cabin, and wherein the electromagnetic sensor system is controlled by the computing device.

7. The mining apparatus of claim 1, wherein the bucket comprises a first sidewall and a second sidewall, wherein the at least one active sensor comprises a plurality of active sensors, and wherein at least one active sensor is coupled to the first sidewall and at least one active sensor is coupled to the second sidewall.

8. The mining apparatus of claim 1, wherein the content of the one or more minerals comprises at least one of:

composition, grade, conductivity, or magnetic susceptibility, and wherein the data analysis system is further configured to;

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

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

9. The mining apparatus of claim 8, wherein the data analysis system is further configured to:

calculate an impedance value based on a difference between the impedance of the at least one active sensor and the impedance of the at least one reference sensor; and

calculate a value representing a quantity of conductive and magnetic material in the ore based on the impedance value.

10. 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;

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,

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

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; and

determining a recommended action based on the content of the minerals, and displaying the recommended action on the user interface.

11. The method of claim 10, wherein the content of the one or more minerals comprises at least one of:

composition, grade, conductivity, or magnetic susceptibility.

12. The method of claim 10, wherein the signal source is an arbitrary waveform generator, and wherein the method further comprises controlling the waveform generator using a computing device disposed within an operator cabin of a mining apparatus.

13. The method of claim 10, 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.

14. The method of claim 10, wherein collecting data associated with the ores further comprises:

applying the source signals to at least one reference sensor,

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.

15. The method of claim 10, wherein the method further comprises:

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

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

17. A method of extracting materials, comprising:

collecting mineral ore;

classifying the mineral ores 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;

preparing each of the first group and the second group for sorting,

wherein the preparing comprises separating, based on particle size, the first group and the second group into first subgroups and second subgroups, wherein the first subgroups have a smaller size particle size than the second subgroups,

wherein the preparing further comprises coarse crushing and wet size classification;

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;

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

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

diverting the first group of the combined group into the final product group; and

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

18. A mining apparatus comprising:

a chassis;

an articulable arm operably coupled to the chassis;

a bucket rotatably connected to the arm and defining an interior cavity,

wherein the bucket is 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 the bucket,

wherein the bucket comprises a first sidewall and a second sidewall, wherein the at least one active sensor comprises a plurality of active sensors, and wherein at least one active sensor is coupled to the first sidewall and at least one active sensor is coupled to the second sidewall,

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; and

a decision support system coupled to the data analysis system configured to provide an output related to sorting and processing ore in response to the content of the one or more minerals.