Rock and Stone Quarrying applications
As a quarry blasting technique the Royex rock breaking system can be used both as a primary and secondary blast or rock breaking alternative. Since the system is very precise and causes minimal rock vibrations and fly rocks , drilling and blasting operations can be done simultaneously. This also means that efficient quarrying is possible close to other structures and in cities.
The three most frequent applications for Royex is pre-splits, secondary breaking and satellite charging.
A pre-split is basically a last row shot with tight hole spacing to create a split which will protect the remaining quarry wall from the fractures generated by the main blast. For this, Royex cartridges are placed in the holes and fired before the main shot which allows for a minimal back break and conservation of the hanging wall.
Secondary breaking is common in quarry applications as oversize is almost always generated when blasting. Rocks to big to handle or to fit in crushers may be broken very safely using Royex even if close to loaders and other pit equipment.
Satellite charging is a concept where a Royex cartridge is placed in the middle of a stemming column and fired with the main blast. This breaks up the crown rock minimizing the risk for oversize due to tall stemming columns.
The videos to the right shows a full quarry blast using Royex and also an example of secondary breaking close to a crusher.