Flame inhibitor mixed explosive allowable by coal mine and preparation method thereof
A technology of mixing explosives and flame suppressants, which is applied in the directions of explosives, non-explosive/non-thermal agent components, non-explosive desensitizers/passivators, etc. Insufficient effect and other problems, to achieve the effect of wide range of use, guaranteed flame-extinguishing ability, and convenient charging
Active Publication Date: 2020-03-31
GANSU YINGUANG CHEM IND GRP CO LTD
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Problems solved by technology
[0003] In the prior art, sodium fluoroaluminate (another name is cryolite) or potassium chloride is mostly used as the flame suppressant in the coal mine flame suppressant mixed explosive formula. Because potassium chloride is difficult to coat, the dry mixing process is commonly used, but due to dry Insufficient mixing process itself led to poor flame suppression effect and was abandoned
Method used
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[0014] The technical solution of the present invention will be described in detail below through six specific examples. In each embodiment, the mixed explosives are prepared by demulsification method.
[0015] Each embodiment relates to a kind of coal mine allowable flame suppressant mixed explosive. The coal mine allowable flame suppressant mixed explosive is composed of main explosive RDX, binder, flame suppressant and desensitizing agent, and the composition of each raw material is shown in the following table:
[0016]
[0017] In described each embodiment, the concrete process of preparing described coal mine allowable flame suppressant mixed explosive is:
[0018] Step 1: Prepare the binder solution, add 0.5-1 parts by mass of shellac and 5-16 parts by mass of ethanol into the dissolving machine, heat and stir to dissolve the shellac, and make a uniform shellac solution; weigh 1.5-2 parts by mass 202 parts of rubber pulp or PVAc emulsion for standby;
[0019] The m...
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Abstract
The invention relates to a flame inhibitor mixed explosive allowable by a coal mine and a preparation method thereof. The flame inhibitor mixed explosive takes hexogen as an explosive main body, sodium aluminosilicate as a flame inhibitor, 202 rubber slurry and shellac or polyvinyl acetate (PVAc) emulsion and shellac as binders, and graphite as a desensitizer. According to the preparation method,the content of the flame inhibitor in the explosive is reduced, the content of the main explosive is increased and the explosion energy of the coal mine allowable flame inhibitor mixed explosive is improved while the flame suppression capability of the explosive is ensured. In addition, the preparation method adopts a demulsification method for granulation, and compared with a traditional water suspension method for granulation, the obtained explosive is uniform in granularity, good in free-running property, high in stacking density and convenient to charge.
Description
technical field [0001] The invention belongs to the technical field of fire and explosives, and in particular relates to a coal mine permitted flame suppressant mixed explosive and a preparation method thereof. Background technique [0002] Flame suppressant mixed explosives allowed in coal mines are widely used in blasting projects in coal mines. In view of the existence of dangerous flammable and explosive materials such as coal dust and gas underground in coal mines, it is required that in the formulation design of allowed explosives in coal mines, in addition to considering the explosives In addition to the explosive performance, it is also necessary to focus on the ability of the explosives used to eliminate flames when they burn flammable and explosive materials underground, that is, the safety of explosion suppression. [0003] In the prior art, sodium fluoroaluminate (another name is cryolite) or potassium chloride is mostly used as the flame suppressant in the mixed...
Claims
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IPC IPC(8): C06B25/34C06B23/00
CPCC06B23/00C06B23/005C06B23/009C06B25/34
Inventor 陈明磊秦光荣韩万胜朱世贤尚凤琴李金鑫张争争吴一歌顾梦云孙立鹏
Owner GANSU YINGUANG CHEM IND GRP CO LTD