Method for preparing nano delay composition for detonator

Abstract

The invention relates to a method for preparing a nano delay composition for a detonator. The preparation method comprises the following steps: weighing a certain amount of silicon powder, selenium powder, a dispersant and zirconia balls according to a proportion, and adding into a round stainless steel,medicine pot of a high-speed grinder; adding proper alcohol, and stirring for a period of time at a certain speed; pausing the grinder, and opening a seal cover; adding a certain amount of minium and proper alcohol or water into the round stainless steel medicine pot, and sealing the pot mouth; re-starting the grinder, stirring for a period of time at a certain speed, and closing the grinder; and discharging, screening, granulating and baking to obtain the nano delay composition granules which can greatly avoid vibration burning when the de-lay composition granules are burned. An internal tube type or lead-wire delay body prepared from the nano delay composition for the detonator can effectively improve the precision and stability of the detonator.

Description

technical field [0001] The invention relates to the field of detonator manufacture, in particular to a preparation method of a delay medicine used for delaying a detonator and a delay body containing the delay medicine. Background technique [0002] As the blasting environment becomes more and more complex, engineers have higher and higher requirements for controlled blasting. In controlled blasting, the selection of delayed detonators is undoubtedly the core. However, at present, there is still some gap between domestic delayed detonators in terms of accuracy and second stability compared with foreign ones, and sometimes they cannot meet the requirements of some precise blasting. The national standard stipulates that the validity period of the delayed detonator is one and a half years, but the general detonator will drift in seconds after half a year of storage, which seriously restricts the development of blasting technology and blasting safety. [0003] The combustion a...

AI Technical Summary

Problems solved by technology

However, in the current domestic production, the crushing particle size is often limited by the existing process conditions, so that the ideal result cannot be achieved

However, the channel shifting, accuracy reduction, and even rejection of blasting caused by second drift will cause immeasurable losses in use. Therefore, the development of high-precision and high-stability delay drugs is a top priority for domestic civil explosives companies.

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