Electric detonators are produced in two groups according to the shell material as aluminium and copper detonators. They are available as instant electric detonators or delayed electric detonators .
Instant electrical detonators are used for the explosion of all the holes at the same time.
Aluminium delayed electric detonators are used for all kinds of blasting initiation purposes in underground mining , surface mining in quarries and in all general purpose blasting works.
Aluminium Detonators: They are used in all mines except coal mines. Three types of aluminium detanators are available:
Instant (No: 0)
Short Delay (No: 0-20) 25 ms or 30 ms delayed
Long Delay (No:0-12) 500 ms delayed
All aluminium detonators are produced in 6, 8 or 8 star strenght according to the request.
Copper Detonators: They are used in coal mines where there is matene or coal dust explosion risk. According to usage purpose they are seperated delayed and instant detonators.
Delay numbers are 0-6, delay interval is 25 ms.copper cable length shall be indicated at order.