Method for preparation of emulsion explosive by using waste explosives

A technology of emulsified explosives and emulsified explosive waste, which is applied in the direction of explosives, etc., can solve the problems of negative oxygen balance of explosives, long emulsification process time, and low recovery efficiency of waste explosives, and achieve the elimination of safety hazards, convenient operation, and easy heating. Effect

Active Publication Date: 2012-06-27
CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In method ③, a large number of new raw materials of emulsion explosives are used to absorb a small amount of waste medicine, the recovery efficiency of waste medicine is low, and the production process is complicated
In method ④, the emulsified explosive waste is directly heated, and then emulsified again after adding a composite emulsifier and a composite oil phase. This method takes a long time during the heating process and emulsification process, and there are also negative oxygen balance of explosives and gunpowder smoke after explosive explosion. Problems such as excessive and unsafe factors in processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Utilize waste medicine to prepare the used raw material of emulsion explosive as follows:

[0046] Ammonium nitrate 217.5g (21.75%)

[0047] Sodium nitrate 24.0g (2.4%)

[0048] Water 36.0g (3.6%)

[0049] Emulsion explosive waste 700.0g (70.0%)

[0050] Complex emulsifier 9.0g (0.9%)

[0051] Oil phase 10.0g (1.0%)

[0052] Foaming agent 2.5g (0.25%)

[0053] Accelerator 1g; (0.1%)

[0054] Among them, waste emulsion explosives refer to emulsion explosives sensitized by chemical bubbles that appear demulsification, crystallization, hardening, etc., and lose detonator sensitivity and detonation ability.

[0055] The compound emulsifier is composed of sorbitan monooleate (SP-80) and soybean lecithin mixed uniformly in a ratio of 1.5:1.

[0056] The oil phase is complex wax.

[0057] The foaming agent is an aqueous solution of sodium nitrite with a concentration of 40%.

[0058] The accelerator is...

Embodiment 2

[0068] Utilize waste medicine to prepare the used raw material of emulsion explosive as follows:

[0069] Ammonium nitrate 8.87kg (29.57%)

[0070] Sodium nitrate 0.15kg (0.5%)

[0071] Water 2.07kg (6.9%)

[0072] Sodium lauryl sulfate 0.01kg (0.03%)

[0073] Emulsion explosive waste 18.0kg (60.0%)

[0074] Compound emulsifier 0.33kg (1.1%)

[0075] Oil phase 0.39kg (1.3%)

[0076] Foaming agent 0.15kg (0.5%)

[0077] Accelerator 0.03kg (0.1%)

[0078] Wherein the emulsion explosive waste medicine is with embodiment 1.

[0079] The compound emulsifier is composed of sorbitan monooleate (SP-80) and soybean lecithin mixed uniformly in a ratio of 2:1.

[0080] The oil phase is a mixture of 0.15kg paraffin, 0.15kg vaseline and 0.09kg engine oil.

[0081] The foaming agent is an emulsion mixture composed of foaming agent water phase and foaming agent oil phase; the foaming agent water phase is co...

Embodiment 3

[0092] Utilize the waste emulsion explosive to prepare the raw material of emulsion explosive as follows:

[0093] Ammonium nitrate 8.87kg (29.57%)

[0094] Sodium nitrate 0.54kg (1.8%)

[0095] Water 1.68kg (5.6%)

[0096] Sodium lauryl sulfate 0.01kg (0.03%)

[0097] Emulsion explosive waste 18.0kg (60.0%)

[0098] Emulsifier 0.33kg (1.1%)

[0099] Oil phase 0.39kg (1.3%)

[0100] Foaming agent 0.165kg (0.55%)

[0101] Accelerator 0.015kg (0.05%)

[0102] Wherein the emulsion explosive waste medicine is with embodiment 1.

[0103] The emulsifier is sorbitan monooleate (SP-80).

[0104] The oil phase is complex wax.

[0105] The foaming agent is an emulsion mixture composed of foaming agent water phase and foaming agent oil phase; the foaming agent water phase is composed of sodium nitrite, ammonium nitrate and water mixed uniformly, and the foaming agent oil phase It is composed of comp...

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PUM

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Abstract

The invention relates to a method for preparation of an emulsion explosive by using waste explosives. The method comprises the following process steps: preparation of water phase liquid, preparation of a compound oil phase, emulsification, cooling, sensitization and charging. A key point of the invention lies in that waste emulsion explosives are utilized; and the waste emulsion explosives refer to chemical bubble-sensitive emulsion explosives which suffer demulsification, crystallization, hardening and the like and lose detonator sensitivity and detonation capacity. In the method, the waste emulsion explosives are used in the preparation of the water phase liquid. According to the invention, low temperature, environmental protection and no pollution of three wastes (waste gas, waste water and industrial residue) are realized, according with developmental requirements; and except packages of explosive cartridges, the explosives are totally recovered, and a high recovery rate is obtained.

Description

technical field [0001] The invention belongs to the technical field of preparation of emulsion explosives, in particular to a method for recycling waste emulsion explosives, in particular to a method for preparing emulsion explosives by recycling waste emulsion explosives sensitized by chemical bubbles. Background technique [0002] Emulsion explosives refer to a kind of aqueous industrial explosives prepared by emulsification technology. Due to the advantages of wide source of raw materials, low cost, water resistance, complete explosive reaction, less toxic gas, and no environmental pollution, the product has developed rapidly in my country. With the development of automated and continuous emulsion explosive production technology, the matching emulsion explosive formulation technology has not been researched and developed in time, or the quality of raw materials involved in the formulation has not been accurately controlled, and the process (emulsification, sensitization a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 王作鹏滕威于魏清侯桂侠
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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