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Powdery emulsion explosive mineral additive surface modification method

A mineral additive, powder emulsion explosive technology, applied in explosive processing equipment, chemical instruments and methods, non-explosive/non-thermal agent components, etc. It is easy to be damaged by friction and other problems, so as to achieve the effect of not easy to clean, improve compatibility and improve efficiency

Pending Publication Date: 2020-09-04
HUBEI SHUAILI CHEM
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the production cost of powdery emulsion explosives, increase the explosive impact of powdery emulsion explosives, and improve the fluidity of powdery emulsion explosives, 0-10% mineral powder is added to powdery emulsion explosives. Usually, however, powder The particle surface of the emulsified explosive and the surface of the mineral particle are very different in hardness and softness. When the surface of the hard mineral particle is mixed with the powdery emulsion explosive, it is easy to rub and destroy the oil film on the surface of the powdery emulsion explosive, resulting in powder The demulsification and even salt precipitation of powdery emulsion explosives will affect the use of powdery emulsion explosives and even lead to the performance attenuation of powdery emulsion explosives and prevent explosion. At the same time, the addition of mineral powders may even improve the mechanical friction sensitivity and mechanical Impact sensitivity, which brings potential safety hazards to the transportation and use of explosives

Method used

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  • Powdery emulsion explosive mineral additive surface modification method
  • Powdery emulsion explosive mineral additive surface modification method
  • Powdery emulsion explosive mineral additive surface modification method

Examples

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Embodiment 1

[0035] A method for surface modification of mineral additives in powdered emulsion explosives. The specific method steps are as follows:

[0036] S1: Heating: Heat the paraffin wax to a flowable molten state, and at the same time heat the 40 mesh talc powder to the same temperature as the molten paraffin wax, the heating temperature is 60°C, and the mass ratio of paraffin wax to talc powder is 1: 100;

[0037] S2: mixing: mixing the molten paraffin wax heated in step S1 and the heated mineral powder in a mixing device;

[0038] S3: Cooling and packaging: After stirring and mixing until the paraffin completely coats the mineral powder, cool to room temperature to obtain the modified mineral, which is packaged for later use;

[0039] S4: Charge: mix a certain proportion of modified minerals and naked explosive powder, and charge them in a 32mm paper roll after mixing. The weight of the charge is 170g, and the length of the charge is 220mm. The explosive performance of the explosive is t...

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Abstract

The invention discloses a surface modification method for a mineral additive of a powdery emulsion explosive. The surface modification method comprises the following specific steps: heating, mixing, cooling and packaging, and charging. According to the invention, mineral substances are subjected to surface modification; the surface of the mineral substance is coated with a layer of film; the surface hardness of mineral particles is overcome; the surface similarity of mineral particles and powdery emulsion explosive particles is increased, so that the compatibility of a mineral additive and emulsion explosive powder is improved, emulsion explosive demulsification and salting-out caused by friction of mineral additive particles on the surfaces of the emulsion explosive particles are avoided,and even the detonation performance of the emulsion explosive is damaged.

Description

Technical field [0001] The invention relates to the technical field of industrial explosives, in particular to a method for surface modification of mineral additives in powdered emulsion explosives. Background technique [0002] Powdered emulsion explosive is a high-power conventional industrial explosive. In order to reduce the production cost of explosives, increase the explosive impact of explosives, and enhance the dispersion of explosives, manufacturers often add some inert mineral powder to powdered emulsion explosives. [0003] Minerals are one of the material forms in nature. The minerals used as additives for powdered emulsion explosives are granular, usually with a particle size of 10-140 mesh. In order to reduce the production cost of powdered emulsion explosives, increase the explosive impact of powdered emulsion explosives, and improve the dispersion of powdered emulsion explosives, 0-10% of mineral powder is usually added to powdered emulsion explosives. However, po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00C06B21/00B01F7/00B01F7/04B01F3/20B01F15/00B01F23/70
CPCC06B23/009C06B21/0008B01F23/713B01F27/2322B01F27/706B01F35/53
Inventor 徐翠荣刘继辉薛海洋周峰
Owner HUBEI SHUAILI CHEM
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