Viscous porous granulated ammonium nitrate fuel oil explosive and preparation method thereof

Abstract

The invention discloses viscous porous granulated ammonium nitrate fuel oil explosive and a preparation method thereof. The ammonium nitrate fuel oil explosive comprises the following constituents in weight percent: 83 to 85 percent of porous granulated ammonium nitrate, 4.5 to 6 percent of compound oil phase, 3.5 to 6 percent of tackifier, 0.2 to 0.5 percent of expanded perlite, 1.3 to 2 percent of powder type explosive energy accelerant, and 3 to 5 percent of thickener. The method comprises the following steps: a, adding the porous granulated ammonium nitrate into a viscous porous granulated ammonium nitrate fuel oil explosive mixer, then adding the compound oil phase, stirring for 2 to 4 minutes at normal temperature, mixing the porous granulated ammonium nitrate and the compound oil phase to be uniform, so as to form mixture A; b, adding the tackifier, the powder type explosive energy accelerant and the expanded perlite into the mixture A, stirring for 1 to 2 munities at normal temperature, mixing the mixture A, the tackifier, the powder type explosive energy accelerant and the expanded perlite to be uniform, so as to form mixture B; and c, adding the thickener into the mixture B, stirring for 1 to 2 munities at normal temperature, and mixing the mixture B and the thickener to be uniform, so as to form the viscous porous granulated ammonium nitrate fuel oil explosive, and then packaging the viscous porous granulated ammonium nitrate fuel oil explosive. The viscous porous granulated ammonium nitrate fuel oil explosive and the method have the advantages that preparation and storage processes are safe and controllable, the power capability is high, the storage period is long, and the explosive is efficient and environmentally friendly.

Description

【Technical field】 [0001] The invention relates to explosives for blasting, in particular to a mechanical bulk charge suitable for various diameters and any directions of blastholes in underground mines, which can realize the mechanization of blasting charges in underground mines without pipe blockage, low charge drop rate and no dust. The invention relates to a viscous porous granular ammonium oil explosive and a preparation method thereof, which have the characteristics of high labor efficiency and are beneficial to the health of gunners and the protection of the environment. 【Background technique】 [0002] The current performance index of porous granular ammonium oil explosives is relatively low. According to the national standard GB17583-1998, its component content is: porous granular ammonium nitrate 94.0%-95.0%, diesel oil 5.0%-6.0%; moisture ≤ 0.3%; performance index: Detonation velocity ≥ 2800m / s (welded steel pipe of Φ50mm×5mm×350mm), intensity ≥ 15mm (welded steel p...

AI Technical Summary

Problems solved by technology

Its defect is that, first, the formula contains the substance that the Ministry of Industry and Information Technology expressly prohibits the addition of methylamine nitrate as a sensitizer in explosives, because methylamine nitrate is a highly sensitive and dangerous explosive, Adding to explosives has a large risk factor in the production and transportation process; second, the amount of toxic gas is greater than 50L / kg, which does not meet the requirements of the state for the amount of toxic gas after explosion of industrial explosives to be no greater than 50L / kg; third, sulfur is low-toxicity Hazardous chemicals, the sulfur dioxide produced after combustion or explosion is highly toxic to the human body. It is a poor conductor, and it is mixed with the oxidant ammonium nitrate to form an explosive mixture. It is easy to generate static charges during production, storage and transportation, which can cause sulfur dust to ignite and spontaneously ignite. It is a substance that is explicitly prohibited from being added to explosives by the Ministry of Industry and Information Technology

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