Tenders are invited for Supply of Emulsion based cap sensitive Explosive 0.125 Kg weight per cartridge 25 mm X 200 mm size with following specification Density: 1.15 0.05 gm per cc, Velocity of detonation: 4200 300 M/sec., Relative Bulk strength
: 170 to 175 (% of ANFO), Non toxic, Water Resistant Excellent, Shelf life: 6 months.
Its bulk strength
and weight properties are also very favorable when compared to metals, and it can be easily formed using molding processes.
Its bulk strength
and weight are also better than many metals, and it can be more readily molded into complex shapes.
These geometrical techniques address mechanisms that allow the bulk strength
of the solid to exceed the failure criteria in the critical arching dimensions of the flow channel.
In both categories, the insert's bulk strength
is exceeded leading to complete failure and tool breakage.
The ultimate tensile strength of single-end-gated samples is referred to as bulk strength
, while the failure strength of double-end-gated samples with weld lines will be called weld strength.
High bulk strength
, 100% coupling and faster charging lead to more effective, and predictable, blasts, combined with consistently higher productivity.
The use of high bulk strength
explosives, such as heavy AN/FO, and the realization of the associated direct and indirect cost savings, is becoming more common in the mining industry today.
Highlights will include: Orica offers bulk explosives that range from less than half, to almost triple the Relative Bulk Strength
of ANFO with additional flexibility in Velocity of Detonation.
Figure 4 shows that for heating and welding pressures of 0.31 MPa, even long heating times could not improve the average weld strength beyond [similar to]16 MPa, which is only 65% of the bulk strength
Vistis produces over three and a half times the detonation pressure of ANFO at triple the Relative Bulk Strength
. The energy levels generated and the speed with which they are released delivers optimal fragmentation that reduces overall operating costs either through pattern expansion, without impacting load and haul rates, or by providing broken stock that increases milling efficiency.
For each parameter setting, the weld line strength was measured and related to the bulk strength
via a weld line factor.