The preparation method of the nano-delay drug used for detonator

Abstract

The present invention relates to a preparation method of nanometer delay medicine. The preparation method includes taking a certain amount of silicon powder, selenium powder, dispersing agent and zirconia balls according to the formula ratio, adding them into a circular stainless steel medicine tank of a high-speed grinding machine, adding an appropriate amount of alcohol, stirring at a certain speed for a period of time, and then pausing the grinding machine. , Open the sealing cover, add a certain amount of lead and an appropriate amount of alcohol or water to the round stainless steel medicine tank, seal the mouth of the tank, start the grinder again, stir at a certain speed for a period of time, close the grinder, discharge, sieve, and then Granulation, and finally drying to obtain nanometer delayed drug particles, which can greatly avoid vibration combustion when the delayed drug particles are burned. The inner tube type or lead cable type delay body made of the nano delay medicine 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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