JPS5564851A - Metal detector for mineral - Google Patents
Metal detector for mineralInfo
- Publication number
- JPS5564851A JPS5564851A JP13666978A JP13666978A JPS5564851A JP S5564851 A JPS5564851 A JP S5564851A JP 13666978 A JP13666978 A JP 13666978A JP 13666978 A JP13666978 A JP 13666978A JP S5564851 A JPS5564851 A JP S5564851A
- Authority
- JP
- Japan
- Prior art keywords
- ores
- resistance
- change
- search coil
- mineral
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE: To perform the detection of metal pieces exactly by utilizing a change in impedance produced when mineral ore passes through a search coil for the detection of mixed metal pieces in mineral ore which are attributable to damage on conveyer belt for ores.
CONSTITUTION: When passing ores with magnetism through the search coil 1 by the conveyer belt, the inductance L is increased by the magnetic permeability of ores and also the DC resistance R is increased by the iron loss of ores. The amount of energy consumed in the oscillating circuit 11 is varied with the change in the impedance of the search coil, and the change in voltage at both ends of the DC resistance RL caused thereby is taken out as an output signal through the condenser C. In this case, when the constant of the return circuit 3 is regulated and the increment and decrement of energy loss in the oscillating circuit 11 due to the changed amount of the DC resistance R are equilibrated, ore itself is not detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13666978A JPS5564851A (en) | 1978-11-08 | 1978-11-08 | Metal detector for mineral |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13666978A JPS5564851A (en) | 1978-11-08 | 1978-11-08 | Metal detector for mineral |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564851A true JPS5564851A (en) | 1980-05-15 |
JPS5635948B2 JPS5635948B2 (en) | 1981-08-20 |
Family
ID=15180710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13666978A Granted JPS5564851A (en) | 1978-11-08 | 1978-11-08 | Metal detector for mineral |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564851A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597582U (en) * | 1978-12-27 | 1980-07-07 | ||
CN105151717A (en) * | 2015-10-16 | 2015-12-16 | 潍坊华强电磁设备有限公司 | Metal detector for belt conveyer |
-
1978
- 1978-11-08 JP JP13666978A patent/JPS5564851A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597582U (en) * | 1978-12-27 | 1980-07-07 | ||
CN105151717A (en) * | 2015-10-16 | 2015-12-16 | 潍坊华强电磁设备有限公司 | Metal detector for belt conveyer |
Also Published As
Publication number | Publication date |
---|---|
JPS5635948B2 (en) | 1981-08-20 |
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