5 results about "ANFO" patented technology

The invention relates to the field of emulsion explosives, in particular to a preparation system and method of an emulsified porous granular ammonium nitrate fuel oil explosive. The invention relates to a preparation system of an emulsified porous granular ammonium nitrate fuel oil explosive, which comprises ammonium nitrate conveying equipment, ammonium nitrate fuel oil mixing equipment, a double-shaft mixer, a wood flour / adhesive mixing screw and packaging equipment, the dredging mechanism comprises a flattening assembly arranged behind the ammonium nitrate conveying equipment and a dredging assembly arranged behind the flattening assembly, and the flattening assembly flattens ammonium nitrate particles to assist the dredging assembly in dredging the ammonium nitrate particles; the adsorption mechanism is arranged behind the dredging mechanism and comprises a mixing assembly arranged behind the flattening assembly, a soaking assembly arranged behind the first mixing assembly and an adsorption assembly arranged behind the soaking assembly; the filtering mechanism is arranged below the adsorption mechanism and is used for filtering the oil liquid used in the adsorption assembly.

The invention relates to the field of blasting and can be used for more efficiently extracting fossils fuels, metallic and non-metallic minerals, hydrominerals, gemstones and chemical minerals. A method for producing a dilatancy effect on producing formations comprises laying ANFO explosive charges on the surface of the ground or in holes at a distance from one another, and detonating said charges with a delay from one to the next. The number of explosive charges is equal to two or more, and the mass of the individual charges may be the same or different but sufficient to produce a dilatancy effect. If the number of charges laid is more than two, the delays between the detonations may be the same or different. The technical result is that of improving the efficiency of mineral extraction.

The invention provides an oil phase material and a preparation method thereof, an explosive comprising the oil phase material and a preparation method of the explosive. Wherein the oil-phase material is a homogeneous dispersion liquid comprising a composite surfactant, a complexing stabilizing aid, an organic alcohol, a higher fatty acid, water, oil and a pour point depressing aid, and the oil-phase material is prepared from the following components in parts by weight: 5-20 parts of the composite surfactant, 1-5 parts of the complexing stabilizing aid, 10-30 parts of the organic alcohol, 1-5 parts of the higher fatty acid, 1-5 parts of the water, 1-5 parts of the oil and the balance of a pour point depressing aid. The invention relates to a pour point depressant which comprises the following components in parts by weight: 1-40 parts of higher fatty acid, 1-50 parts of water, 1-50 parts of oil and 0.2-2 parts of pour point depressant. According to the embodiment of the invention, the oil-phase material has good dispersibility and adsorbability, compatibility with porous granular ammonium nitrate, low-temperature stability, storage stability and good fluidity, and can be tightly combined with ammonium nitrate with a porous structure, so that the detonation performance and storage stability of an ANFO (ammonium nitrate fuel oil) explosive can be greatly improved.

The invention provides a white mud-based ANFO inert filler, a preparation method thereof and an application. Calculated by weight parts, the raw materials for preparing the white mud-based ANFO inert filler include: 82-90 parts of white mud, 0.5-2.5 parts of pore-forming agent, and 3-15 parts of expanding agent; wherein, calculated by weight percentage, the white mud contains 10-15% of C, 55-75% of SiO2, the expanding agent includes Fe2O3, and the pore-forming agent includes SiC. The invention can solve the problem in the prior art that there is a lack of an inert filler that can reduce the density of ANFO, stabilize the detonation velocity, and not affect its sensitization degree and stability.

The invention belongs to the technical field of ammonium nitrate fuel oil explosives, and particularly relates to an ammonium nitrate fuel oil explosive and a preparation method thereof. The ammonium nitrate fuel oil explosive comprises an oil-phase-like material, granular ammonium nitrate and a density adjusting material, wherein the density adjusting material is polymer foam; in terms of the ammonium nitrate fuel oil explosive, the content of the oil-phase-like material is 5-30 wt%, the content of the granular ammonium nitrate is 55-90 wt%, and the content of the density adjusting material is 2-15 wt%; the density of the ammonium nitrate fuel oil explosive is 0.30-0.75 g / cm < 3 >; through the synergistic effect of the oil-phase-like material, the granular ammonium nitrate and the density adjusting material in specific dosage, the explosive has proper density and detonation velocity, and the low explosive return rate and the long storage period can be guaranteed.