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A method for separating graphite in fine powder of graphite granulated explosive

A graphite and granulation technology, applied in explosives, explosives processing equipment, offensive equipment and other directions, can solve the problems affecting the appearance, color and component content of products, hidden dangers, environmental pollution, etc.

Active Publication Date: 2018-04-13
SHANXI BEIHUA GUANLYU CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if these bonded explosive fine powders with high graphite content are processed by reprocessing and granulation, graphite will not only affect the granulation effect of bonded granulation, but also affect the appearance, color and component content of the product; It will not only increase the manufacturing cost, but also bring safety hazards and pollute the environment during the destruction process.
[0004] At present, there is no better method in the prior art to separate the graphite in the fine powder of graphite granulated explosives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (a) adding graphite granulated explosive fine powder into water, stirring to make suspension, the quality of water is 1.0 times of graphite granulated fine powder quality;

[0045](b) Under stirring and at 50°C, add a surfactant to the suspension for one wash, the amount of the surfactant added is 0.1% of the quality of the fine powder of graphite granulated explosives, and the surfactant is dodecyl sodium sulfate;

[0046] (c) leave the suspension for 5 minutes, suck the graphite-containing supernatant from the top of the container, remove part of the graphite, and obtain the lower layer of feed liquid;

[0047] (d) under stirring and at 50°C, add ethyl acetate solvent to the feed liquid for secondary washing, the quality of ethyl acetate is 10% of the mass of graphite granulated fine powder;

[0048] (e) leave the suspension for 5 minutes, suck the graphite-containing supernatant from the top of the container, remove the remaining graphite, and obtain the lower layer...

Embodiment 2

[0056] (a) adding graphite granulated explosive fine powder into water, stirring to make suspension, the quality of water is 2 times of graphite granulated fine powder quality;

[0057] (b) Under stirring and at 45°C, add a surfactant to the suspension to wash once, the amount of surfactant added is 0.15% of the mass of graphite granulated explosive fine powder, and the surfactant is dodecyl sodium sulfonate;

[0058] (c) leave the suspension for 8 minutes, suck the graphite-containing supernatant from the top of the container, remove part of the graphite, and obtain the lower layer of feed liquid;

[0059] (d) under stirring and at 45°C, add ethyl acetate solvent to the feed liquid for secondary washing, the quality of ethyl acetate is 15% of the mass of graphite granulated fine powder;

[0060] (e) leave the suspension for 8 minutes, suck the graphite-containing supernatant from the top of the container, remove the remaining graphite, and obtain the lower layer of feed liqu...

Embodiment 3

[0065] (a) adding graphite granulated explosive fine powder into water, stirring to make suspension, the quality of water is 3.5 times of graphite granulated fine powder quality;

[0066] (b) under stirring and at 40°C, add a surfactant to the suspension for one wash, the amount of surfactant added is 0.2% of the mass of graphite granulated explosive fine powder, and the surfactant is soap flakes;

[0067] (c) leave the suspension for 10 minutes, suck out the graphite-containing supernatant from the top of the container, remove part of the graphite, and obtain the lower layer of feed liquid;

[0068] (d) under stirring and at 40°C, add chloroform solvent to the feed liquid for secondary washing, the quality of chloroform is 20% of the mass of graphite granulated fine powder;

[0069] (e) leave the suspension for 10 minutes, suck the graphite-containing supernatant from the top of the container, remove the remaining graphite, and obtain the lower layer of feed liquid;

[0070]...

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Abstract

The invention provides a method for separating graphite from graphite granulated explosive powder. The method comprises the following steps: 1) mixing the graphite granulated explosive powder with water to obtain suspension; 2) mixing the suspension with a surfactant to obtain first mixed liquid; 3) layering and separating the first mixed liquid to obtain a primary lower layer material liquid; 4) mixing the primary lower layer material liquid with an organic solvent to obtain second mixed liquid; 5) layering and separating the second mixed liquid to obtain secondary lower layer material liquid; 6) mixing the secondary lower layer material liquid with water, and then filtering. The method provided by the invention can fully separate the graphite from the explosive powder granules and a binder contained in the explosive powder granules, thereby fully removing the graphite. Experimental results show that the content of graphite in graphite-removed explosive powder obtained after treatment through the separation method provided by the invention is extremely low, and the content of graphite is lower than 0.02%.

Description

technical field [0001] The invention relates to the technical field of graphite granulated explosives, in particular to a method for separating graphite from fine powder of graphite granulated explosives. Background technique [0002] In the manufacturing process of bonded granulated explosives, in order to improve the press-packing process of bonded explosives, the fluidity of the product and eliminate the accumulation of static electricity between product particles, it is necessary to passivate the product with 0.1-1% graphite. The chemically treated bonded explosives will be sieved into fine powders of bonded explosives containing a large amount of graphite. [0003] At present, in the prior art, the processing methods for the bonded explosive fine powder with high graphite content mainly include the destruction method and the reprocessing granulation method. However, if these bonded explosive fine powders with high graphite content are processed by reprocessing and gran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B21/00
CPCC06B21/0091
Inventor 侯会生王卫星胡银旺姚新民闫华杨芬谢利鹏郑红武苗菲
Owner SHANXI BEIHUA GUANLYU CHEM IND
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