Abstract: The disclosure is directed to pumpable explosive compositions that include a matrix emulsion, which has i) technical or fertilizer grade ammonium nitrate in a ratio between 60% and 70%; (ii) sodium nitrate from 1% to 20%; iii) urea from 0.1% to 8%; iv) thiourea from 0.1% to 2%, v) water from 5% to 20%, vi) acetic acid or sulfamic acid from 0.1% to 2%; vii) surfactants of non-ionic or polymeric nature from 0.5 to 3%; and viii) a hydrocarbon such as petroleum or a paraffinic or naphthenic based mineral oil, and where a second component of composition are technical and/or fertilizer grade ammonium nitrate prills in a ratio from 5% to 50%.

Abstract: An explosive mixture of a water-in-oil dispersion (matrix emulsion) and ammonium nitrate granules (prills) of fertilizer grade, mechanically sensitized by microspheres (microballs), of plastic ceramic, glass or mixtures thereof and/or by means of a chemical reaction of bubble generation (gasification), which obtains an explosive composition of greater energy, greater volume of gases, water resistant and sensitive to No. 8 detonator, with a relative density as a cartridge between 0.95 g/cm3 and 1.25 g/cm3, with a detonation rate in an unconfined medium as cartridge in the range from 3500 m/s to 5900 m/s and it is stable for a minimum period of 6 months and where the explosive mixture is used in plastic or paper cartridges (chubs) as a nitrocarbonitrate primer and/or column loading in land blasting (rocks) from soft hardness to very hard in underground mining and/or open pits.

Abstract: The present invention relates to a method for producing ANFO on the basis of filtration and purification of the residual oils of a mine in a filter truck especially designed and developed for this purpose, with the aim of completely replacing the diesel fuel 2 with said residual oils that have been previously treated in order to mix same with ammonium nitrate, as well as the product resulting from said method. The aim of this invention is to use the residual oil produced in mines in large quantities, as the only combustible agent in the production of ANFO, generating cost savings by completely substituting diesel 2 and additionally eliminating the existing risk inherent in the removal of the residual oil from the mine and the negative impact that it can generate in the environment if it is not used appropriately.

Abstract: A method of preparing heavy ANFO including loading high density ammonium nitrate into a hopper; feeding the high density ammonium nitrate into a mixing chamber; during the feeding step, injecting fuel into a high density ammonium nitrate feeding pipe, thereby obtaining ANFO; loading bulk emulsion into a hopper; gassing the bulk emulsion; feeding the gassed bulk emulsion into a same mixing chamber as the ANFO; and mixing the gassed bulk emulsion and the ANFO, thereby obtaining heavy ANFO.

Abstract: A method of thermally treating high density ammonium nitrate for manufacturing ANFO and heavy ANFO including loading high density ammonium nitrate into a tank; entering the high density ammonium nitrate into heating equipment at room temperature; heating the high density ammonium nitrate inside the heating equipment; removing the treated ammonium nitrate from the heating equipment at a temperature less than 60° C.; and sieving the treated ammonium nitrate, thereby obtaining thermally treated ammonium nitrate; feeding thermally treated ammonium nitrate at a temperature of less than 30° C. into a mixing chamber while injecting fuel into the thermally treated ammonium nitrate feeding pipe, thereby obtaining ANFO; loading gassed or ungassed bulk emulsion into a hopper; feeding the bulk emulsion into the same mixing chamber as the ANFO; and mixing the bulk emulsion and the ANFO, thereby obtaining heavy ANFO.