Types of Explosives accessories - Mining and … Tube NONEL Detonator [HMX] 3 mm 1 mm 10 ELECTRIC...
Transcript of Types of Explosives accessories - Mining and … Tube NONEL Detonator [HMX] 3 mm 1 mm 10 ELECTRIC...
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(Exploder)
Det-cord
INITIATING DEVICES
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σt = 120 KgF
σt = 100
σt = 95
σt = 100 KgF
Detonating chords
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Detonating Chord
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For Trunkline ExtendingFor Tying Downline to surface Trunkline
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Detonating relay Connectors (DRC)
45 ms
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35 ms
Red = 60 ms
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Signal Tube NONEL Detonator
[HMX]
3 mm1 mm
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ELECTRIC DETONATORS
a) Instantaneous Elect Detb) “L” Series Millisecond Delay Detc) Half Second (LP) Delay Detd) Electronic Detonators
a) Magnadet Detonatorsb) Magna Primer
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FuseheadComposition1- Ignition Composition(Lead Mono-Nitro Reserconate+Potassium Chlorate)
2- Flashing Composition(Potassium Chlorate+ Charcoal)
3- Protective Coating(Nitro Cellulose)
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Instantaneous
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MS Delay Electric Dets
Half Second Delay Elect Dets
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Electric Det
• Carrick coal mine detonators
• Ten delays ( 0 -10)• Delay interval = 30 sec
Carrick (Copper Tube) Det
Exploders
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Exploders
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I = 10-7 A
R =1010 Ohm
V = 1000 V
E = 0.6 mJ
C = 300 pF= 300 x10 -12F
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Magnadet High Frequency Electric Det.
Concept: Detonator wires are connected to a ring transformer consisting of a ferite ring – TOROID.
Toroid is frequency sensitive activated by the special AC powered exploder operating in the frequency range of 12 000 – 25 000 Hz. [AC]
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Electronic detonator
Micro Chip
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Top (Collar) Vs Bottom Initiation
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ANZOMEX PRIMERS (Boosters)
• Anzomex boosters are cast water proof primers, made principally of cast pentolite (mixture of PETN, TNT and other miner ingredients– High strength, and high densi– High VOD (7000 m/s)– Lower shock sensitivity, friction, impact.
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