Rock-Tech > Products > Secondary Blasting

Rockraker™

Rockraker™ is a new propellant based system for breaking oversized boulders without the safety concerns of noxious gases or explosives and detonators. Rockraker™ uses a composite propellant and non-electric shock tube thermal igniter to detonate gas pressure in the hole bottom and fracture the boulder.

Safety First

RT-5, the unique RockTek propellant, was developed to minimize the production of carbon monoxide and oxides of nitrogen in the combustion gases. This makes Rockraker™ the best choice for underground or other sensitive environments. And, since the entire cartridge is effectively inert until confined in the drill hole, it is much safer to use for boulder breakage than conventional explosives.

Fast, Efficient, and economical

Rockraker™ is fast! As quickly as you can do the following four easy steps, you can fracture an oversize boulder and move on to the next one.

Drill a 38mm (11/2inch) or larger hole
Insert the Rockraker cartridge in the hole
Load stemming above the cartridge
Initiate the cartridge Gone are the large capital investments of equipment and the expensive downtime and disruptions associated with explosive methods.

Download Rockraker™ Brochure

Download Rockraker™ Operating Manual

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Rockbreaking power choices

Two Rockraker™ 38 series cartridges (38/40) and (38/60) can be used. You choose the right charge for the individual boulder, depending on size, rock type, and any existing fractures.

Innovations in Rockbreaking

RockTek is leading the way to safe, reliable, and cost effective propellant based methods of rockbreaking in mining. For more information about Rockraker™ and other Rocktek products that can increase productivity in your mining, quarrying, or construction operations, contact us today via telephone, email, or letter.

The Rockraker™ system for breaking oversize boulders uses gas pressure developed at the bottom of a drill hole. The pressure comes from the ignition of RockTek's proprietary RT-5 composite propellant, designed to minimize carbon monoxide and oxides of nitrogen. The Rockraker™ cartridge is initiated with a non-electric shocktube igniter. An alternative electrical ignition system is also available, if required.

Propellant-based-RockTek's RT-5 propellant burns rapidly upon ignition of the non-electric thermal igniter.
The system was designed specifically for use in underground and surface mines, quarries and construction operation -Minimal flyrock-Cartridges are available in two charge strengths to easily adjust the amount of energy required for an individual shot -Simplified transport and storage requirements
Hazard class 1.4S, UN0323, Cartridges, Power Device
No capital cost-RockTek's unique concept allows use of the system with a very wide range of hole sizes and drilling machines ranging from hand-held sinkers to large hydraulic track-drills
No production downtime
Generally, no blasting permit is required as for conventional explosives
Reduced noise levels
The pressure generated by the RT-5 propellant is very limited, compared to high explosives
Multiple boulders
Any number of Rockraker™ cartridges can be connected together, if desired and shot simultaneously
Low fume levels-RockTek's composite propellant produces minimal amounts of carbon monoxide and oxides of nitrogen as compared to conventional propellant and explosives
Holes can be drilled at any convenient angle from horizontal to vertically downwards
Rockraker™ cartridges can be used to break oversize rock in crushers, chutes, grizzlies or anywhere an oversize rock is causing a problem
Electric Firing Option
An electric match can be used in conjunction with an optional shocktube starter for electric firing.


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