Low-density rock powdery emulsion explosive and its method

Abstract

The invention discloses a low-density rock powder emulsion explosive and a method thereof, and belongs to the field of industrial mining. The explosive is prepared from 80%-90% of normal rock powder emulsion explosive, 3%-7% of modified density conditioning agent and 7%-15% of porous granulated ammonium nitrate; the normal rock powder emulsion explosive is prepared form 80%-92% of ammonium nitrate, 3%-5% of water and 5%-6% of composite fuel oil; the modified density conditioning agent is prepared from 80%-85% of fine perlite and15%-20% of diesel; the bulk density of the porous granulated ammonium nitrate is 0.73-0.86 g / cm<3>, as for the granularity, the content of grains of the diameter of 0.5-2.5 mm is at least larger than 90%. According to the low-density rock powder emulsion explosive and the method thereof, the problems of high boulder yield after the blasting using of the powder emulsion explosive, massive emission load of poisonous gases after the explosion, high product sensitivity, high security risk during production and usage and the like are solved, meanwhile the problem of half-explosion of water blasthole products of partial users when using powder explosive products of expanded ammonium nitrate explosive, modified ammonium nitrate fuel oil mixture and the like is thoroughly solved. The low-density rock powder emulsion explosive can thoroughly replace current powder explosive products of the normal powder emulsion explosive, expanded ammonium nitrate explosive, modified ammonium nitrate fuel oil mixture and the like at home.

Description

technical field [0001] The invention belongs to the field of industry and mining, and in particular relates to a low-density rock powder emulsion explosive and a method thereof. Background technique [0002] The existing rock powdery emulsion explosive is a main powdery explosive product in my country. Its components do not contain toxic substances such as TNT. It has excellent explosive performance, strong water resistance, and is easy to use and easy to fill blastholes. However, there are also high sensitivity and high safety risks in the process of production and use; compared with other powdered explosive products, the main problem is that the charge density of the blast hole is high, and the rate of large pieces produced by blasting is high; because the process formula mostly adopts positive oxygen balance to improve the pulverization The molding rate of granulation, so the explosion poisonous gas (nitrogen oxides) after blasting use is more, these problems have not bee...

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Problems solved by technology

[0003] The object of the present invention is to provide a low-density rock powdery emulsion explosive and its method for the problems of existing rock powdery emulsion explosives, such as production and use, low safety factor, and many toxic gases. Large block rate, which promotes the zero-oxygen balance of the explosive process formula, which can reduce the emission of toxic gases after the explosion, reduce the sensitivity of powdery emulsion explosives, and improve the intrinsic safety of the production and use process

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