CA2642557A1 - Apparatus and method for the detection and rejection of metal in particulate material - Google Patents
Apparatus and method for the detection and rejection of metal in particulate material Download PDFInfo
- Publication number
- CA2642557A1 CA2642557A1 CA 2642557 CA2642557A CA2642557A1 CA 2642557 A1 CA2642557 A1 CA 2642557A1 CA 2642557 CA2642557 CA 2642557 CA 2642557 A CA2642557 A CA 2642557A CA 2642557 A1 CA2642557 A1 CA 2642557A1
- Authority
- CA
- Canada
- Prior art keywords
- conveyor
- intake opening
- particulate material
- metal
- redirection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract 24
- 239000011236 particulate material Substances 0.000 title claims abstract 21
- 238000000034 method Methods 0.000 title claims abstract 11
- 238000001514 detection method Methods 0.000 title 1
- 238000007599 discharging Methods 0.000 claims abstract 7
- 239000013618 particulate matter Substances 0.000 claims 7
- 239000000463 material Substances 0.000 claims 2
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 239000002002 slurry Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/02—General arrangement of separating plant, e.g. flow sheets specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
- E21C41/31—Methods of surface mining; Layouts therefor for oil-bearing deposits
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Sorting Of Articles (AREA)
Abstract
A system and method for removing a piece of tramp metal from particulate material transported by a conveyor is provided. A metal detector is used to detect tramp metal in the particulate material traveling along the conveyor. When a piece of tramp metal is detected, a redirection device positioned at the end of the conveyor is used to reject a portion of the particulate material that contains the tramp metal, by temporarily redirecting the flow of particulate material discharging from the conveyor.
After the portion of particulate material containing the piece of tramp metal has been redirected by the redirection device, the system resumes normal operation.
After the portion of particulate material containing the piece of tramp metal has been redirected by the redirection device, the system resumes normal operation.
Claims (24)
1. A system for rejecting a portion of non-metallic particulate material containing a piece of tramp metal, the system comprising:
a conveyor having a discharge end, the discharge end positioned to discharge particulate material from the conveyor to an intake opening;
a metal detector positioned adjacent to the conveyor and upstream a travel distance from the discharge end;
a redirection device provided at the discharge end of the conveyor, the redirection device operative to allow particulate matter discharging from the discharge end of the conveyor to enter the intake opening and, when activated, redirect particulate material discharged from the discharge end of the conveyor away from the intake opening; and a controller comprising at least one processor, the at least one processor operative to:
in response to receiving a metal detected signal from the metal detector, the metal detected signal indicating that the metal detector has detected a piece of metal in the particulate material traveling along the conveyor, determine a travel time for the piece of metal to reach the discharge end of the conveyor; and activate the redirection device to redirect particulate material discharged from the discharge end of the conveyor away from the intake opening at the travel time.
a conveyor having a discharge end, the discharge end positioned to discharge particulate material from the conveyor to an intake opening;
a metal detector positioned adjacent to the conveyor and upstream a travel distance from the discharge end;
a redirection device provided at the discharge end of the conveyor, the redirection device operative to allow particulate matter discharging from the discharge end of the conveyor to enter the intake opening and, when activated, redirect particulate material discharged from the discharge end of the conveyor away from the intake opening; and a controller comprising at least one processor, the at least one processor operative to:
in response to receiving a metal detected signal from the metal detector, the metal detected signal indicating that the metal detector has detected a piece of metal in the particulate material traveling along the conveyor, determine a travel time for the piece of metal to reach the discharge end of the conveyor; and activate the redirection device to redirect particulate material discharged from the discharge end of the conveyor away from the intake opening at the travel time.
2. The system of claim 1 wherein the at least one processor determines the travel time based on the travel distance and a speed of operation of the conveyor.
3. The system of claim 2 wherein the speed of operation of the conveyor is obtained by the controller from a speed sensing device.
4. The system of claim 1 wherein the at least one processor activates the redirection device for a discharge time by transmitting a reject signal to the redirection device before the travel time, the reject signal causing the redirection device to redirect particulate material discharged from the discharge end of the conveyor away from the intake opening and then waiting the discharge time after the reject signal is transmitted before transmitting a resume signal to the redirection device, the redirection device, in response to the resume signal, allowing particulate matter discharging from the conveyor to enter the intake opening.
5. The system of claim 4 wherein the redirection device comprises a second conveyor positioned so that particulate matter discharged from the discharge end of the conveyor lands on the second conveyor, the second conveyor being bidirectional such that the second conveyor can operate in a first direction and a second direction, a first end of the second conveyor positioned over the intake opening, a second end of the second conveyor positioned away from the intake opening, wherein in response to a reject signal from the controller, the second conveyor operates in the second direction, moving material on the second conveyor towards the second end of the conveyor, and in response to a resume signal from the controller, the second conveyor operates in a first direction, moving material on the second conveyor towards the first end of the second conveyor.
6. The system of claim 5 wherein the intake opening is an opening of a slurry preparation tower.
7. The system of claim 1 wherein the redirection device comprises:
a baffle wall, the baffle wall positionable between a first position, allowing particulate matter discharged from the discharge end of the conveyor to enter the intake opening, and a second position, directing particulate material discharged from the discharge end of the conveyor away from the intake opening, the baffle wall operative to move from the first position to the second position in response to receiving a reject signal from the controller and operative to move from the second position to the first position in response to receiving a resume signal from the controller.
a baffle wall, the baffle wall positionable between a first position, allowing particulate matter discharged from the discharge end of the conveyor to enter the intake opening, and a second position, directing particulate material discharged from the discharge end of the conveyor away from the intake opening, the baffle wall operative to move from the first position to the second position in response to receiving a reject signal from the controller and operative to move from the second position to the first position in response to receiving a resume signal from the controller.
8. The system of claim 7 wherein the baffle wall is moved from the first position to the second position by a hydraulic cylinder.
9. The system of claim 7 wherein the intake opening is an opening of a second conveyor.
10. The system of claim 7 further comprising a second conveyor having a discharge end, the discharge end of the second conveyor positioned away from the intake opening, wherein the baffle wall directs particulate material discharged from the discharge end of the conveyor belt to the second conveyor when the baffle wall is in the second position.
11. The system of claim 7 further comprising a rejection chute directed away from the intake opening, wherein the baffle wall directs particulate material discharged from the discharge end of the conveyor belt to the rejection chute when the baffle wall is in the second position.
12. The system of claim 10 wherein the intake opening is an opening of a surge bin.
13. The system of claim 11 wherein the intake opening is an opening of a surge bin.
14. A method for rejecting a portion of non-metallic particulate material containing a piece of tramp metal traveling along a conveyor discharging to an intake opening, the method comprising:
detecting a piece of metal in particulate material carried by the conveyor;
determining a travel time indicating when the piece of metal will be discharged from the conveyor; and directing particulate material being discharged from the conveyor away from an intake opening for a discharge time and then redirecting the particulate matter being discharged from the conveyor to the intake opening after the discharge time, wherein the travel time occurs within the discharge time.
detecting a piece of metal in particulate material carried by the conveyor;
determining a travel time indicating when the piece of metal will be discharged from the conveyor; and directing particulate material being discharged from the conveyor away from an intake opening for a discharge time and then redirecting the particulate matter being discharged from the conveyor to the intake opening after the discharge time, wherein the travel time occurs within the discharge time.
15. The method of claim 14 wherein the conveyor is operated at a substantially constant speed.
16. The method of claim 14 wherein the conveyor is operating at a first speed when the piece of metal is detected and the conveyor is operated at least the first speed during the method.
17. The method of claim 14 wherein the discharge time is less than 60 seconds.
18. The method of claim 17 wherein the discharge time is less than 30 seconds.
19. The method of claim 18 wherein the discharge time is between 5 seconds and seconds.
20. The method of claim 19 wherein the discharge time period is between 8 seconds and 15 seconds.
21. An apparatus for controlling a system to automatically remove a piece of tramp metal from particulate matter transported by a conveyor discharging into an intake opening, the apparatus comprising:
at least one processor operative to:
in response to receiving a metal detector signal from a metal detector indicating a piece of metal has been detected a portion of particulate material traveling along the conveyor, determine a travel time for the piece of metal to reach a discharge end of the conveyor; and using the travel time, generate at least one signal and transmitting the at least one signal to a redirection device to cause the redirection device to divert particulate material discharging from the conveyor away from the intake opening for a discharge time.
at least one processor operative to:
in response to receiving a metal detector signal from a metal detector indicating a piece of metal has been detected a portion of particulate material traveling along the conveyor, determine a travel time for the piece of metal to reach a discharge end of the conveyor; and using the travel time, generate at least one signal and transmitting the at least one signal to a redirection device to cause the redirection device to divert particulate material discharging from the conveyor away from the intake opening for a discharge time.
22. The apparatus of claim 21 wherein the at least one processor is a programmable logic controller.
23. The apparatus of claim 21 wherein the at least one processor determines the travel time based on the travel distance and a speed of operation of the conveyor.
24. The apparatus of claim 21 wherein the at least one processor is operative to:
generate a reject signal and transmits the reject signal to the redirection device before the travel time, the reject signal causing the redirection device to redirect particulate material discharged from the conveyor away from the intake opening;
wait the discharge time after the reject signal is transmitted before generating and transmitting a resume signal to the redirection device, the redirection device causing the redirection device to allow particulate matter discharging from the conveyor to enter the intake opening.
generate a reject signal and transmits the reject signal to the redirection device before the travel time, the reject signal causing the redirection device to redirect particulate material discharged from the conveyor away from the intake opening;
wait the discharge time after the reject signal is transmitted before generating and transmitting a resume signal to the redirection device, the redirection device causing the redirection device to allow particulate matter discharging from the conveyor to enter the intake opening.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2642557A CA2642557C (en) | 2008-10-31 | 2008-10-31 | Apparatus and method for the detection and rejection of metal in particulate material |
| CA2643292A CA2643292C (en) | 2008-10-31 | 2008-11-07 | Apparatus and process for wet crushing oil sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2642557A CA2642557C (en) | 2008-10-31 | 2008-10-31 | Apparatus and method for the detection and rejection of metal in particulate material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2642557A1 true CA2642557A1 (en) | 2010-04-30 |
| CA2642557C CA2642557C (en) | 2011-08-09 |
Family
ID=42126231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2642557A Active CA2642557C (en) | 2008-10-31 | 2008-10-31 | Apparatus and method for the detection and rejection of metal in particulate material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2642557C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474004A (en) * | 2020-11-10 | 2021-03-12 | 姚裕强 | Movable construction waste treatment equipment |
-
2008
- 2008-10-31 CA CA2642557A patent/CA2642557C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474004A (en) * | 2020-11-10 | 2021-03-12 | 姚裕强 | Movable construction waste treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2642557C (en) | 2011-08-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |