Method for preparing emulsion explosive by high-temperature sensitization

An emulsified explosive and high-temperature technology, which is applied to explosives, explosives processing equipment, non-explosive/non-thermal agent components, etc., can solve the problems of sensitization and long foaming time, achieve moderate size distribution, low cost, and reduce workshop operations personnel effect

Inactive Publication Date: 2015-01-07
XUZHOU LEIMING CIVILIAN BLASTING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the existing latex matrix needs to be cooled before sensitization; the sensitization, foaming time is long, and the foaming accelerator is strong acid or sulfur-containing toxic salts, etc., the present invention provides a method for preparing emulsion explosives by high-temperature sensitization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Taking the industrial production of 100kg rock emulsion explosive as an example, the raw materials are as follows:

[0019] Ammonium nitrate 77.5kg

[0020] Sodium nitrate 7.0kg

[0021] Urea 0.5kg

[0022] Water 9.0kg

[0023] Composite oil phase 3.5kg

[0024] Sorbitan Monooleate 2.5kg

[0025] 30% sodium nitrite aqueous solution 1.0kg

[0026] pH 5.5 Potassium hydrogen phthalate buffer solution 0.5kg

[0027] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1 kg of paraffin, 1 kg of vaseline, 0.5 kg of mechanical oil, and 1.0 kg of chlorinated paraffin.

[0028] Concrete preparation operation steps are as follows:

[0029] The first step of water phase preparation: Put 77.5kg of ammonium nitrate, 7.0kg of sodium nitrate, 0.5kg of urea, and 9kg of water into the water phase dissolution tank with interlayer and stirring device in sequence, heat and stir evenly, heat the temperature to 110°C, and stop the...

Embodiment 2

[0038] Taking the industrial production of 100kg rock emulsion explosive as an example, the raw materials are as follows:

[0039] Ammonium nitrate 75.0kg

[0040] Sodium nitrate 8.0kg

[0041] Urea 0.8kg

[0042] Water 10.0kg

[0043] Composite oil phase 3.8kg

[0044] Sorbitan monooleate 2.4kg

[0045] Sodium nitrite aqueous solution with a mass fraction of 40% 0.75kg

[0046] Potassium dihydrogen phosphate buffer solution with pH value 4.5 1.0kg

[0047] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1 kg of paraffin, 1.1 kg of vaseline, 0.7 kg of mechanical oil, and 1.0 kg of chlorinated paraffin.

[0048] The operation step of preparing emulsion explosive is the same as embodiment 1, and different processing conditions are as follows,

[0049] The first step of water phase preparation: heating the temperature to 105°C;

[0050] The second step of oil phase preparation: heating temperature to 95°C.

[0051...

Embodiment 3

[0057] Taking the industrial production of 100kg rock emulsion explosive as an example, the raw materials are as follows:

[0058] Ammonium nitrate 71.0kg

[0059] Sodium nitrate 11.0kg

[0060] Urea 1.0kg

[0061] Water 11.0kg

[0062] Composite oil phase 4.5kg

[0063] Sorbitan Monooleate 1.5kg

[0064] Dinitrosopentamethylenetetramine aqueous solution with a mass fraction of 50% 0.6kg

[0065] Potassium tartrate buffer solution with pH value 3.5 1.8kg

[0066] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1.0 kg of paraffin, 1.0 kg of vaseline, 1.0 kg of mechanical oil, and 1.5 kg of chlorinated paraffin.

[0067] The operation step of preparing emulsion explosive is the same as embodiment 1, and different processing conditions are as follows,

[0068] The first step of water phase preparation: heating the temperature to 95°C.

[0069] The second step of oil phase preparation: heating temperature to 85°C....

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Abstract

The invention relates to a method for preparing an emulsion explosive by high-temperature sensitization. The method comprises the following steps: preparing a water phase, preparing an oil phase, emulsifying, sensitizing, charging and cooling. The emulsion explosive comprises the following raw materials: ammonium nitrate, sodium nitrate, urea, water, a composite oil phase, an emulsifier, a foamer and an accelerant, wherein the accelerant is a potassium biphthalate buffer solution with the pH value of 5.5, a potassium dihydrogen phosphate buffer solution with the pH value of 4.5, a potassium tartrate buffer solution with the pH value of 3.5 or a potassium tetroxalate buffer solution with the pH value of 1.0; the sensitizing process comprises the following sub-steps: uniformly mixing the accelerant with the foamer to obtain a mixture, adding the mixture into a latex matrix with the temperature of 85-110 DEG C, uniformly mixing, and sensitizing for 0.5-10 minutes. According to the method, the raw material-accelerant is wide in source, low in cost and nontoxic, and the pH value of the explosive is increased, and the explosive performance can be improved; the sensitizing process is simple, quick and free of aftereffect, the production process is simplified, the cost is reduced, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of emulsion explosives, in particular to a preparation method of industrial emulsion explosives. Background technique [0002] Emulsion explosives are usually prepared by emulsifying an aqueous solution of an oxidizing agent and a reducing agent to obtain a latex matrix, and the latex matrix can be produced through a foaming process under the action of a sensitizer. The sensitization process is an essential and extremely important process in the manufacture of emulsion explosives, which has an important impact on the performance of emulsion explosives. There are two main methods of sensitization of emulsion explosives: the first method is to use the chemical sensitization method of adding strong explosives or sensitive components, which has the disadvantages of high cost and unsafe production, which limits its wide application in industrial explosives; Two kinds of methods are the bubble sensitization metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00C06B23/00C06B31/28
CPCC06B21/00C06B23/009C06B31/28
Inventor 张亦彬
Owner XUZHOU LEIMING CIVILIAN BLASTING EQUIP CO LTD
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