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Mixed explosive for detonators, and preparation method thereof

A technology of mixing explosives and detonators, which is applied in the direction of explosives, non-explosive/non-thermal agent components, non-explosive fillers/gelling agents/thickeners, etc., which can solve problems such as inconvenient production, poor cohesive force, and difficult granulation , to achieve the effects of low production cost, good cohesive force and good granulation effect

Inactive Publication Date: 2019-02-01
SHANXI BEIHUA GUANLYU CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to achieve a better use effect, the main content of cyclotrimethylenetriammonium trinitrate in the current detonator is required to be more than 97%, and the original use of polyvinyl acetate emulsion and 202 rubber slurry has poor adhesion during use. , fine particle size, difficult granulation and other problems, which bring a lot of inconvenience to production

Method used

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  • Mixed explosive for detonators, and preparation method thereof
  • Mixed explosive for detonators, and preparation method thereof
  • Mixed explosive for detonators, and preparation method thereof

Examples

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preparation example Construction

[0032] The present invention also provides a preparation method for the mixed explosive for the detonator described in the above technical solution, comprising the following steps:

[0033] (1) cyclotrimethylenetriammonium trinitrate is mixed with water to obtain a suspension;

[0034] (2) The suspension obtained in the step (1) is mixed with polyvinyl acetate emulsion and 551 glue to obtain a mixed solution;

[0035] (3) mixing the mixed solution obtained in the step (2) with a demulsifier to obtain a clear solution;

[0036] (4) The clear solution obtained in the step (3) is heated and mixed with ethyl acetate for granulation;

[0037] (5) removing ethyl acetate in the granulated product obtained in the step (4);

[0038] (6) filtering the product obtained in step (5) after removing ethyl acetate to obtain material;

[0039] (7) The material obtained in the step (6) is sequentially washed, dried and graphite passivated to obtain a mixed explosive for a detonator.

[0040...

Embodiment 1

[0056] (1) the cyclotrimethylenetriammonium trinitrate of 90kg is put into 108kg water, stir to obtain suspension;

[0057] (2) Add 3.86kg of polyvinyl acetate and 0.58kg of 551 glue to the suspension, and stir evenly;

[0058] (3) Add 10 kg of anhydrous sodium sulfate again, and the mass concentration is 5 L of 15% calcium chloride aqueous solution, and stir to obtain a clear solution;

[0059] (4) Heat the obtained clear solution to 55°C at a heating rate of 2°C / min, add ethyl acetate at a rate of 10mL / min for granulation, and control the amount of ethyl acetate added by sampling and observing the size of the white particles ;

[0060] (5) When the white particle size reaches the particle size between 0.25mm~1.00mm (80mesh~60mesh), stop adding ethyl acetate, open the vacuum system (vacuum degree is 0.02MPa), and heat the mixed solution to Distill ethyl acetate at 80°C;

[0061] (6) After the distillation of ethyl acetate is completed, the mixed solution is cooled to 50° C...

Embodiment 2

[0066] (1) the cyclotrimethylenetriammonium trinitrate of 90kg is put into 130kg water, stir to obtain suspension;

[0067] (2) Add 3.86kg of polyvinyl acetate and 0.58kg of 551 glue to the suspension, and stir evenly;

[0068] (3) Add 10 kg of anhydrous sodium sulfate again, and the mass concentration is 5 L of 15% calcium chloride aqueous solution, and stir to obtain a clear solution;

[0069] (4) Heat the obtained clear solution to 55°C at a heating rate of 2°C / min, add ethyl acetate at a rate of 10mL / min for granulation, and control the amount of ethyl acetate added by sampling and observing the size of the white particles ;

[0070] (5) When the white particle size reaches the particle size between 0.25mm~1.00mm (80mesh~60mesh), stop adding ethyl acetate, open the vacuum system (vacuum degree is 0.02MPa), and heat the mixed solution to Distill ethyl acetate at 80°C;

[0071] (6) After the distillation of ethyl acetate is completed, the mixed solution is cooled to 50° C...

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Abstract

The invention provides a mixed explosive for detonators, and relates to the field of explosives, wherein the mixed explosive comprises, by mass, 97.0-97.3% of cyclotrimethylenetrinitramine, 2.0-2.01%of a polyvinyl acetate emulsion, 0.30-0.39% of a 551 glue, and 0.4-0.6% of graphite, wherein the graphite encapsulates the cyclotrimethylenetrinitramine, the polyvinyl acetate emulsion and the 551 glue. According to the present invention, by using the polyvinyl acetate emulsion and the 551 glue as the binder, the product has good bonding property, the cyclotrimethylenetrinitramine can be completely and integrally adhered, and the product has good granulation effect and good pressing property; the obtained mixed explosive has advantages of good adhesion, breaking resistance and uniform particlesize; and with the application of the mixed explosive in pressing and loading, the free-running property is good, the bulk density of the explosive is high, the content of the main body cyclotrimethylenetrinitramine is high, and the power is strong.

Description

technical field [0001] The invention relates to the technical field of explosives, in particular to a mixed explosive for a detonator and a preparation method thereof. Background technique [0002] In order to achieve a better use effect, the main content of cyclotrimethylenetriammonium trinitrate in the current detonator is required to be more than 97%, and the original use of polyvinyl acetate emulsion and 202 rubber slurry has poor adhesion during use. , Fine particle size, difficult granulation and other problems, bring a lot of inconvenience to production. Contents of the invention [0003] In view of this, the object of the present invention is to provide a kind of mixed explosive for detonator and its preparation method. The mixed explosive for a detonator provided by the invention uses polyvinyl acetate emulsion and 551 glue as binders, has strong binding force and is easy to granulate. [0004] In order to realize the above-mentioned purpose of the invention, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/34C06B23/00
CPCC06B23/001C06B25/34
Inventor 杨琨苗菲荆昌伦谢利鹏杨波
Owner SHANXI BEIHUA GUANLYU CHEM IND
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