What is the weight strength of ANFO?

1, Pneumatically loaded, 1.1 g cm−3; 2, pneumatically loaded, 0.95 g cm−3; 3, poured ANFO, 0.8 g cm−3. Typical values quoted for the weight strength and bulk strength of ANFO are 70% BG (blasting gelatine) and 30% BG, respectively.

What is the ratio for ANFO?

ANFO and emulsion explosives are now the most widely used explosives all over the world. ANFO is composed of approximately 94% AN and 6% fuel oil by weight. The main characteristics of ANFO are as follows: (1) ANFO is detonator-insensitive, so it must be initiated by a primer.

What is the minimum prime weight of ANFO?

Only ANFO manufactured with emulsion compatible AN prills is recommended for use in TITAN 1000 Heavy ANFO blends. The minimum cast booster weight recommended to prime TITAN 1000 Heavy ANFO blends with 50% or greater ANFO content is 454 g (16 oz). ALWAYS double prime when bulk explosive columns exceed 6 m (20 ft).

How much does a bag of ANFO weigh?

ANFO provides excellent heave energy. Bagged ANFO is available in packaged form varying from bulk bags (500kg) through to smaller plastic bags (10, 20 and 25kg).

Does ANFO expire?

Shelf Life – ANFO has a maximum shelf life of six (6) months dependent on temperature and humidity conditions. Storage in a high humidity and high temperature environment will accelerate product breakdown and should be avoided.

What is the formula for ANFO?

The authors derived these values from ANFO’s shock Hugoniot given by equation: Us = 0.92 + 1.4 up. The same parameters of n and κB are used for ANFOs having densities in the range 0.8–0.91 g/cm, while molar volume (V0) is calculated from density and molecular weight of ANFO ( V 0 = M w / ρ 0 ) .

Is ANFO a secondary explosive?

ANFO is a tertiary explosive, meaning that it cannot be set off by the small quantity of primary explosive in a typical detonator. A larger quantity of secondary explosive, known as a primer or a booster, must be used.

Why is ANFO used in mining?

ANFO Explosive – A Versatile Solution Ammonium Nitrate is an adaptable oxidizer that works well when explosions are needed during mining or quarrying operations. When combined with fuel oil, it makes an effective explosive that has a wide range of applications.

What is ANFO emulsion?

ANFO (Ammonium Nitrate Fuel Oil) ANFO is the simplest commercial explosive available. This free flowing mixture of porous prilled Ammonium Nitrate and Fuel Oil is formulated to be oxygen balanced in dry blastholes and is very quickly dissolved by water.