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Emulsion explosive and rapid chemical foaming sensitization method thereof

An emulsion explosive and emulsion explosive matrix technology, which is applied in explosives, explosives processing equipment, non-explosive/non-thermal agent components, etc., can solve the problem of insufficient foam stabilization ability, uneven size and distribution of sensitized bubbles in emulsion explosives, and reduced pressure. Sensitivity and other problems, to achieve the effect of complete decomposition, ensuring detonation stability, and fast foaming speed

Active Publication Date: 2012-09-19
SHANDONG TIANBAO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to avoid the deficiencies in the above-mentioned prior art, solve the problems of the size and distribution of sensitized bubbles in the emulsion explosive, insufficient foam stabilizing ability and pressure desensitization, and provide a kind of powder with excellent explosive performance and good storage stability. Emulsion explosive and its rapid chemical foaming sensitization method

Method used

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  • Emulsion explosive and rapid chemical foaming sensitization method thereof
  • Emulsion explosive and rapid chemical foaming sensitization method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] Embodiment 1 prepares the emulsion explosive of the present invention according to the rapid chemical foaming sensitization method of the present invention

[0063] The first step is to prepare emulsified foaming glue according to the following steps

[0064] ①. Preparation of polyvinyl alcohol aqueous solution

[0065] At room temperature, add 42.35 kg of accurately measured water into the polyvinyl alcohol dissolving kettle, slowly add 5 kg of measured polyvinyl alcohol into the dissolving kettle and stir fully, control the stirring speed at 100 rpm, stir and mix for 30 minutes, and then Soak for 120-180 minutes to fully swell the polyvinyl alcohol. Then, gradually raise the temperature to 90°C to 95°C under stirring, and keep warm and dissolve at the temperature of 90°C to 95°C until the polyvinyl alcohol is completely dissolved. The solution is uniform and clear, without visible transparent particles, ready for use;

[0066] ②. Preparation of sodium nitrite aqueo...

Embodiment 2

[0088] The production line test was carried out on the platform of Shandong Tianbao Chemical Co., Ltd. AE-HLC continuous emulsion explosive production line. The type of explosive produced is No. 2 rock emulsion explosive, the set production capacity is 4.5t / h, the flow rate of styrofoam: 18.0L / h, the flow rate of accelerator: 16.5L / h, the sensitization temperature: 50°C, and the discharge temperature: 48°C. The measured drug density is 1.18g / cm -3 . Charge according to the specification of φ32mm / 200g, measure performance, detonation velocity: 5600m / s; detonation: ≥7cm; intensity: 19.26mm; storage time: ≥13 months.

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Abstract

The invention provides an emulsion explosive and a rapid chemical foaming sensitization method thereof, belonging to the field of explosive processing. The emulsion explosive comprises an emulsion explosive substrate and a blowing promoter. The invention is characterized in that the emulsion explosive is prepared from the following raw materials by weight percent: 98.6-99.7 of emulsion explosive substrate, 0.2-0.7 of emulsion foam adhesive and 0.1-0.7 of foaming promoter, wherein the emulsion foam adhesive is prepared from the raw material components in percentage by weight: 10-20 of sodium nitrite, 3-10 of poval, 2-15 of anphoterics and 55-85 of water. The invention provides the emulsion explosive with excellent explosion property and good storage stability and the rapid chemical foamingsensitization method of the emulsion explosive, thereby solving the problems of uneven sensitization bubble and size distribution, insufficient foaming capability and pressure desensitization in the emulsion explosive. The rapid chemical foaming sensitization method has the advantages that a formula is simple, the foaming speed is fast, the foaming is even without aftereffect, the dosage of the foam adhesive is less, and the sodium nitrite is thoroughly decomposed; and the product explosive resists extrusion and has the characteristics of strong bubble fixing capability, long storage period and stable quality, and the bubble is not easy to aggregate and overflow after extrusion.

Description

technical field [0001] The invention relates to an emulsion explosive and a rapid chemical foaming sensitization method thereof. Belongs to explosives processing. Background technique [0002] The sensitization methods of emulsion explosives usually include perlite sensitization, high explosive sensitization, metal powder sensitization and air bubble sensitization. Among them, chemical foaming sensitization has the advantages of low cost, simple process, and good explosive performance. It has been adopted by many manufacturers, but when chemically foaming sensitized emulsion explosives, improper selection of foaming process conditions will affect the uniformity of bubble distribution in the emulsion explosives, post-effect foaming and storage stability, thereby affecting The detonation performance of the emulsion explosive is reduced, and at the same time, because the generated bubbles are easy to gather and overflow after being squeezed, it will cause pressure desensitiza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00C06B21/00
Inventor 吴臣李治国咸会朵张真徐纪虎陈成芳张强刘相胜魏绪珂宋伟
Owner SHANDONG TIANBAO CHEM