Emulsion explosive composition for booster of bulk explosive

Abstract

The present disclosure provides an emulsion explosive composition for a booster of a bulk explosive. The composition contains 88% to 98% by weight of an oxidizer aqueous solution, 0.1% to 6% by weight of an emulsifier, 0.1% to 5% by weight of fuel oil, and 0.1% to 1.0% by weight of plastic micro balloons (PMB). The oxidizer aqueous solution is an oxidizer aqueous solution containing ammonium nitrate, sodium nitrate, calcium nitrate, water, and at least one selected from monomethyl amine nitrate (MMAN) and ethylene diamine dinitrate (EDDN). The prepared emulsion has a particle size in the range of 0.5 μm to 2.0 μm.

1 . An emulsion explosive composition for a booster of a bulk explosive, the composition comprising 88% to 98% by weight of an oxidizer aqueous solution, 0.1% to 6% by weight of an emulsifier, 0.1% to 5% by weight of fuel oil, and 0.1% to 1.0% by weight of plastic micro balloons (PMB),
 wherein the oxidizer aqueous solution is an oxidizer aqueous solution comprising ammonium nitrate, sodium nitrate, calcium nitrate, water, and at least one selected from monomethyl amine nitrate (MMAN) and ethylene diamine dinitrate (EDDN), and   a prepared emulsion has a particle size in the range of 0.5 μm to 2.0 μm.   
     
     
         2 . The composition of  claim 1 , wherein MMAN or EDDN contained in the oxidizer aqueous solution is contained in an amount of 3% to 10% by weight respect to the total weight of the emulsion explosive composition. 
     
     
         3 . The composition of  claim 1 , wherein the PMB is a copolymer of vinyldienechloride (VDC), methylmethacrylate (MMA), and acrylonitrile (ACN) or comprises one or more selected from polymers of ACN. 
     
     
         4 . The composition of  claim 1 , wherein the emulsifier is one or more selected from the group consisting of sorbitan mono oleate (SMO) and an amine salt of polyisobutylenesuccinicanhydride (PIBSA). 
     
     
         5 . The composition of  claim 1 , wherein the fuel oil is one or more selected from the group consisting of wax, mineral oil, light oil, and liquid paraffin.