ANFO explosives is a simple mixture of ammonium nitrate and fuel oil , also known as ammonium nitrate - fuel oil explosives. Granular ANFO , ammonium nitrate and fuel oil, its porous granular ratio of 94.5:5.5 , totally , this ratio exothermic reaction volume . Powdered ANFO flour is added to the formulation , the ratio was 92% ammonium nitrate and fuel oil 4% 4% wood flour , outdoor ANFO is ammonium nitrate from 92 %, 3% and 5% of diesel flour composition , if selected porous granular ammonium nitrate , a system of production Lu was porous granular ANFO , using its aperture fuel oil adsorption capillary action live . Typically the effective porosity 0.07cm2 / g , it can absorb about 6% fuel oil , charge density of the product is generally 0.80 ~ 0.85g/cm3. Under conditions of large- diameter detonation velocity is 4300 ~ 4500m / s.
ANFO rich source of raw materials , low cost , easy to manufacture , safe operation and easy to use. Once invention, development and application of extremely active , and soon occupied the main market of industrial explosives , heavy use of ANFO instead of in the mining , quarrying and mining take buy special low- salt areas of explosives, ammonium nitrate and fuel oil at the same time and even anti- into the drilling machine to use. Its main drawback is easy to absorb moisture and are water purification , fire -sensitive , easy to produce static electricity , filling low density, small blast force , the surfactant is added ANFO , the better.
ANFO production usually jet mixing method , coming from the fuel nozzle mixed with ammonium nitrate particles. Cars now use more mixed method, the project site of the explosion mixed side by side with the compressed air hose in bulk drug injection borehole , using this method to promote the modernization of the open-air blasting . If ANFO adding aluminum powder in 18% or less , which will greatly improve the blasting power , current , open-air ANFO has become a large-diameter hole blasting is the most important blasting explosives.ANFO explosives is a simple mixture of ammonium nitrate and fuel oil , also known as ammonium nitrate - fuel oil explosives. Granular ANFO , ammonium nitrate and fuel oil, its porous granular ratio of 94.5:5.5 , totally , this ratio exothermic reaction volume . Powdered ANFO flour is added to the formulation , the ratio was 92% ammonium nitrate and fuel oil 4% 4% wood flour , outdoor ANFO is ammonium nitrate from 92 %, 3% and 5% of diesel flour composition , if selected porous granular ammonium nitrate , a system of production Lu was porous granular ANFO , using its aperture fuel oil adsorption capillary action live . Typically the effective porosity 0.07cm2 / g , it can absorb about 6% fuel oil , charge density of the product is generally 0.80 ~ 0.85g/cm3. Under conditions of large- diameter detonation velocity is 4300 ~ 4500m / s.
ANFO rich source of raw materials , low cost , easy to manufacture , safe operation and easy to use. Once invention, development and application of extremely active , and soon occupied the main market of industrial explosives , heavy use of ANFO instead of in the mining , quarrying and mining take buy special low- salt areas of explosives, ammonium nitrate and fuel oil at the same time and even anti- into the drilling machine to use. Its main drawback is easy to absorb moisture and are water purification , fire -sensitive , easy to produce static electricity , filling low density, small blast force , the surfactant is added ANFO , the better.
ANFO production usually jet mixing method , coming from the fuel nozzle mixed with ammonium nitrate particles. Cars now use more mixed method, the project site of the explosion mixed side by side with the compressed air hose in bulk drug injection borehole , using this method to promote the modernization of the open-air blasting . If ANFO adding aluminum powder in 18% or less , which will greatly improve the blasting power , current , open-air ANFO has become a large-diameter hole blasting is the most important blasting explosives.
