CN-117865763-B - Porous granular ammonium nitrate fuel oil explosive oil phase material and preparation method thereof

Abstract

The invention relates to a porous granular ammonium nitrate fuel oil explosive oil phase material and a preparation method thereof. The ammonium nitrate fuel oil explosive prepared by the oil phase material can overcome the defects of the conventional ammonium nitrate fuel oil explosive, can effectively improve the explosion power, the sympathetic explosion speed and the detonation sensitivity of the ammonium nitrate fuel oil mixed explosive, can prolong the storage stability period, has low air temperature in winter, does not freeze, and greatly reduces the oil phase material cost of the ammonium nitrate fuel oil explosive.

Inventors

• CAI SHIGAI
• WANG CHENG

Assignees

• 湖北同一科技有限公司

Dates

Publication Date

20260505

Application Date

20240201

Claims (1)

1. 1. The porous granular ammonium nitrate fuel oil explosive oil phase material is characterized by comprising the following components in parts by weight: 2% -5% of energetic material, 96% -98.95% of oil phase and 0.05% -1% of borate ashless dispersant; the energetic material is charcoal powder with the grain diameter less than or equal to 1 micron; the oil phase is light polyhydric alcohol and contains one or two of crude glycol and crude glycerol; The borate ashless dispersant is one or two of trimethyl borate, triethyl borate, tripropyl borate and tributyl borate.

Description

Porous granular ammonium nitrate fuel oil explosive oil phase material and preparation method thereof Technical Field The invention relates to an oil phase material, in particular to a porous granular ammonium nitrate fuel oil explosive oil phase material and a preparation method thereof. Background The ammonium nitrate fuel oil explosive is a powdery or granular explosive mixture which is composed of ammonium nitrate and fuel and does not contain an explosive sensitizer, and is mainly suitable for blasting engineering without the danger of marsh gas and dust explosion, and comprises powdery ammonium nitrate fuel oil explosive, porous granular ammonium nitrate fuel oil explosive, heavy ammonium nitrate fuel oil explosive, granular viscous explosive and tackified granular ammonium nitrate fuel oil explosive. The ammonium nitrate fuel oil explosive has the most remarkable characteristics of simple and convenient preparation and relatively insensitive property. Therefore, the method can only adopt a powerful detonation mode, and is used in large-aperture and large-dosage open-air large blasting occasions. The processing technology of the ammonium nitrate fuel oil explosive is simple, the components do not contain high explosive and high-energy substances, and meanwhile, the ammonium nitrate fuel oil explosive does not contain toxic and harmful substances, has ideal detonation performance, meets the national strategy requirement for sustainable development, is an important direction of industrial explosive development, but the ammonium nitrate fuel oil explosive has the defects of low explosion power, low explosion speed, low detonation sensitivity, short storage period, oil phase freezing at low temperature and the like at present, and limits the application range of the ammonium nitrate fuel oil explosive. At present, the existing porous granular ammonium nitrate explosive mainly adopts porous granular ammonium nitrate and diesel oil (oil phase material) as main materials, but the diesel oil has the problem of high freezing point, is easy to freeze at low temperature in winter, simultaneously reduces cost and increases efficiency, is a target which is not changed by days of old pursued by each enterprise, and is a requisite thing to replace the diesel oil by low-cost and low-freezing point materials. Therefore, the physical property, chemical property and explosion property of the ammonium nitrate fuel oil explosive are improved through the oil phase material, and the ammonium nitrate fuel oil explosive has important theoretical significance and practical significance for promoting the development of industrial explosives, can improve the engineering blasting quality, and improves the economic benefits of civil explosive equipment production and mine enterprises. Disclosure of Invention The technical problems to be solved by the embodiment of the invention are that a practical solution is provided for solving the problems that the existing porous granular ammonium nitrate fuel oil explosive oil phase material has poor storage stability and high price, and the porous granular ammonium nitrate fuel oil explosive has the defects of low explosive power, low detonation velocity, low detonation sensitivity, short storage period and the like. In order to solve the technical problems, the invention is realized by the following technical scheme: Wherein, the porous granular ammonium nitrate fuel oil explosive oil phase material comprises the following components in percentage by weight: 2% -5% of energetic material, 96% -98.95% of oil phase and 0.05% -1% of borate ashless dispersant; the energetic material is charcoal powder with the grain diameter of 80-120 microns; the oil phase is light polyhydric alcohol and contains one or two of crude glycol and crude glycerol; The borate ashless dispersant is one or two of trimethyl borate, triethyl borate, tripropyl borate and tributyl borate. The preparation method of the porous granular ammonium nitrate fuel oil explosive oil phase material comprises the following steps: 1) Preparation of oil phase material semi-finished product Sequentially adding light polyalcohol, energetic material and borate ashless dispersant into a reaction kettle, and uniformly stirring and dispersing at 20-45 ℃ to obtain an oil phase material semi-finished product; 2) Preparation of oil phase material Grinding the oil phase material semi-finished product by a sand mill, and carrying out grinding under the indoor environment temperature condition of 20-45 ℃, wherein the grain size of the ground charcoal powder is less than or equal to 1 micrometer, so as to obtain the porous granular ammonium nitrate fuel oil explosive oil phase material. The embodiment of the invention has the following beneficial effects: 1) The cost is low, compared with the existing diesel oil which is used in large quantity, the raw materials in the invention are greatly reduced; 2) The field with low environmental temperature i