Special composite oil phase for high-temperature sensitized and emulsified explosive production process

Abstract

The invention discloses a special composite oil phase for a high-temperature sensitized and emulsified explosive production process. A preparation method of the composite oil phase comprises the following steps: taking light dewaxing paste, paraffin wax, natural wax, vaseline, SMO, polyisobutenyl alcohol ester emulsifier J as composing agents; heating to be 90-95 DEG C and melting in a reaction kettle; stirring and heating; starting a vacuum pump for dewatering; cooling to be 90-95 DEG C; adding the weighed SMO and the emulsifier J; uniformly stirring; controlling the temperature; and filtering, forming and packaging. According to the composite oil phase, the emulsifying and superposing effects are remarkable, the emulsifying performance is excellent, a dense stereoscopic composite emulsified film can be formed, and the formed latex granules are fine and uniformly distributed; the bubble fixing capability is good in a high temperature condition, the gathered free bubbles are reduced as far as possible, and enough effective micro small bubbles can be still reserved after sensitization, so that explosives can be endowed with good explosion performance and storage stability; and meanwhile, the composite oil phase is low in cost, simple and reliable in preparation process, and convenient for industrial production and application.

Description

technical field [0001] The invention relates to the field of industrial explosives, in particular to a special composite oil phase for the production process of high-temperature sensitized emulsion explosives. Background technique [0002] Since H.F.Blume disclosed emulsion explosives for the first time in USP3,445,890, various countries have carried out in-depth and extensive research on it, and now it has developed into a new type of water-resistant industrial explosive with broad application prospects, becoming the leader in the global industrial explosive field product. [0003] Emulsion explosives are developed based on the theory of emulsions. Usually, water-insoluble hydrocarbon fuel (oil phase material) is used as the continuous phase, and supersaturated nitrate aqueous solution is used as the dispersed phase. Through the emulsification of the emulsifier, more than 90% It is a water-in-oil (W / O) special latex system formed by dispersing the nitrate aqueous solution ...

AI Technical Summary

Problems solved by technology

[0006] Since the high-temperature sensitization production process adopts low-speed coarse milk and static emulsification process, its shearing effect is obviously restricted, especially static emulsification is a passive stirring shearing, and the shearing strength is limited, especially when the pressure is not high and the flow rate is increased. Larger cases are more serious, which affects the reduction of explosive performance (especially detonation sensitivity and storage performance); at the same time, due to chemical foaming under high temperature conditions (about 85°C), free aggregation is very easy to occur after the bubbles are formed , which reduces the effective air bubbles and weakens the sensitization function, which seriously affects the detonation performance and storage performance of explosives

At present, in order to ensure the emulsification effect, SMO with good emulsifiability has to be selected as the emulsifier; at the same time, in order to improve the solid foam strength of the oil film, a large amount of imported high-grade microcrystalline wax (in the oil phase material) has to be added to the oil phase material content as high as 20% or more), which not only increases the production cost of explosives manufacturers, but also leads to the inability to effectively guarantee the storage performance of explosives

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