A kind of coal mine allowable flame suppressant mixed explosive and preparation method thereof
A technology for mixing explosives and flame suppressants, which is applied in the direction of explosives, non-explosive/non-thermal agent components, non-explosive desensitizers/passivators, etc., which can solve the problems of difficult coating, poor flame suppression effect, discarding, etc. question
Active Publication Date: 2021-09-10
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
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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
A coal mine flame suppressant mixed explosive and its preparation method, using RDX as the main body of the explosive, sodium aluminosilicate as the flame suppressant, 202 rubber pulp and shellac or polyvinyl acetate (PVAc) emulsion and Shellac is used as binder, and graphite is used as insensitive agent. The invention reduces the content of the flame suppressant in the explosive, increases the content of the main explosive, ensures the flame suppressing ability of the explosive, and improves the explosive energy of the mixed explosive of the flame suppressant allowed in coal mines. Moreover, the preparation method of the present invention adopts the demulsification method for granulation. Compared with the traditional water suspension method for granulation, the obtained explosive has uniform particle size, good fluidity, high bulk density, and is convenient for 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