A kind of preparation method of anti-pressure emulsion explosive

Abstract

The invention discloses a preparation method of a pressure-resistant emulsified explosive, which belongs to the technical field of emulsified explosives. The preparation method comprises the following steps: separately preparing a sensitizer and an emulsified matrix, adding the sensitizer to the emulsified matrix and mixing uniformly to obtain Emulsion explosive; when the charge temperature is 45-60°C, the sensitizer includes sodium nitrite, zinc nitrate, sodium thiocyanate and water; when the charge temperature is 60-90°C, the sensitizer includes sodium nitrite , zinc nitrate, calcium nitrate and water. The preparation method of the pressure-resistant emulsion explosive provided by the present invention adopts the chemical sensitization method for the preparation of the emulsion explosive, and the sensitizer provided can adapt to the current production line of two sensitization methods of medium and low temperature and high temperature, reducing uncertain safety Factors, effectively reducing costs, and being beneficial to clean production, the pressure-resistant emulsion explosive prepared by the preparation method has the characteristics of high detonation velocity, high explosion power, strong resistance to dynamic and static pressure, and the like.

Description

technical field [0001] The invention belongs to the technical field of emulsion explosives, and in particular relates to a preparation method of a pressure-resistant emulsion explosive. Background technique [0002] Emulsion explosives take the fine droplets of aqueous oxidant solution as the continuous phase and suspend in the continuous medium composed of oil-like substances containing dispersed bubbles or hollow glass microspheres or other porous materials to form a special water-in-oil emulsification system. With the development of the economy, my country has continuously increased its efforts in infrastructure construction and the development of lakes and seas. The southern part of my country is a hilly terrain with complex geological environment and a large number of joints, fissures and karst caves. At the same time, my country is the core of the 21st Century Maritime Silk Road. In order to meet the increasing throughput demand, some original ports are undergoing reco...

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Problems solved by technology

With the development of the economy, my country has continuously increased its efforts in infrastructure construction and the development of lakes and seas. The southern part of my country is a hilly terrain with complex geological environment and a large number of joints, fissures and karst caves. At the same time, as the core of the 21st Century Maritime Silk Road, my country Area, the number and scale of coastal wharves In order to meet the increasing throughput demand, some original ports are undergoing reconstruction and expansion, and the construction projects of ports and waterways are increasing year by year. In these engineering projects, complex underground environments and underwater blasting are all involved. Playing an important role, the underground complex environment and underwater blasting technology are more complicated than general land blasting, such as drilling technology, charge technology, lithological structure conditions and marine meteorological conditions, etc. all have certain influence on the blasting effect, especially for Higher requirements are put forward for the compressive performance of emulsion explosives. Physical sensitization such as glass microspheres and expanded perlite is used in the preparation process of existing pressure-resistant emulsion explosives, which has the problems of low safety factor and poor compressive resistance of the obtained products.

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