Boron-silicon delay powder and preparation process thereof

Abstract

The invention relates to boron-silicon delay powder and a preparation process thereof. The boron-silicon delay powder comprises the following components in mass ratio: 5-20 percent of silicon powder, 1-4 percent of boron powder, 62-75 percent of miniumite, 4-30 percent of antimony sulfide and 0.05-0.4 percent of adhesive. The preparation process comprises the steps of: smashing the silicon powder, the boron powder and the adhesive through air flow for later use; weighing processed raw materials in required proportions; preparing a stainless steel ball and alcohol; sealing a mixing drum after the raw materials are completely soaked; starting a mixing machine to mix powder; discharging the powder; prebaking; after the powder is baked to the humidity suitable for pelletizing, adding alcohol for wetting to pelletize; then sending the powder into a drying room for baking; and placing the baked powder into a powder-cooling room, and cooling the powder to room temperature to prepare the delay powder. According to the delay powder, the combustion stability and the delay precision of powder can be improved, and the preparation process is capable of effectively improving the pharmaceutical quality and further improving the delay precision of the delay powder.

Description

technical field [0001] The invention relates to a delay drug and a method for making the delay drug, in particular to a boron-silicon series delay drug for a delay detonator and a manufacturing process thereof. Background technique [0002] Silicon-based delay medicine is a mixed delay medicine made of silicon powder, red lead, antimony sulfide, binder, etc. It can adjust the delay time by changing the selection of raw materials and the ratio of components. [0003] In the existing manufacturing process of delayed medicine, the pulverization of formula components basically adopts the ball mill pulverization process, the particle size is limited to a certain extent, and the particle size distribution is uneven, the energy consumption is high, and impurities are easily introduced. [0004] The existing delay drug mixing process is mostly mixed with water or alcohol as the medium, and the binder is added during granulation after drying. In the granulation process of this proces...

AI Technical Summary

Problems solved by technology

[0003] In the existing manufacturing process of delayed medicine, the pulverization of formula components basically adopts the ball mill pulverization process, the particle size is limited to a certain extent, and the particle size distribution is uneven, the energy consumption is high, and impurities are easily introduced

[0004] The existing delay drug mixing process is mostly mixed with water or alcohol as the medium, and the binder is added during granulation after drying. In the granulation process of this process, uneven mixing of the drug and the binder is prone to occur. The final agent is prone to stratification during the drying process