JP2020012625A - Firing ball having dichromate as main functional component - Google Patents

Abstract

To obtain a firing ball that is free of lead and friendly to the environment.SOLUTION: A firing ball has ammonium dichromate and nitrocellulose as the main functional components for firing and has further components for sustaining its firing: an oxidizing agent such as potassium nitrate and metal powder such as magnalium.SELECTED DRAWING: Figure 1

Description

The present invention relates to an explosive for an ignition ball for electrically igniting explosives.

In general, explosives containing lead thiocyanate and potassium chlorate as main components are used for ignition balls used for electric ignition, and those using chromates are used in the prior patent, but dichromates were used. Nothing was found.

JP-A-11-287442 (Japanese Patent Application No. 10-101727)

Using lead thiocyanate diffuses harmful lead into the environment, so it was necessary to obtain a practical ignition ball without using lead

By igniting the ignition ball using dichromate without using lead thiocyanate

Since harmful lead does not diffuse into the environment, it does not affect human health. Hexavalent chromium is used, but the amount is very small, and it is considered that it is often reduced to trivalent chromium which is safe in the environment and during use. Therefore, the problem is considered to be much less than that of lead.
In addition, the nitrocellulose used in combination is stably coexisting because the hydroxyl group easily oxidized by hexavalent chromium is protected by the nitric acid group, and can withstand long-term storage.

0.5 g of ammonium dichromate
Potassium nitrate 0.5g
Nitrocellulose (weak cotton) 1.5g
8.0 g of acetone
If a wire with a constantan wire bridge having a diameter of 0.05 mm and a length of 5 mm as shown in the figure is dipped and lifted in a liquid well mixed with the above, mucus adheres in a film form. If this is dried at room temperature, the ignition ball is completed. If you want to increase the amount of gunpowder, reduce the amount of acetone or increase the number of repeated soaking

Outline drawing of electric bridge part and leg line for current supply suitable for ignition ball powder of the present invention Sectional view of the part where the ignition ball powder was attached

1 Constantan wire (diameter 0.05mm)
2 Part except the covering of the electric wire 3 Part where the explosive for the ignition ball is attached in a film form 4 Electric wire (leg line)
5 Parts A and B to connect the ignition power except for the sheath of the electric wire The part showing the sectional view of FIG.

Claims (4)

Explosives for ignition balls that use dichromate (dichromate) as the main functional component, such as potassium dichromate Explosives for ignition balls containing ammonium dichromate (ammonium dichromate) as the main functional component An igniter ball containing ammonium dichromate as the main functional component of the igniting agent, nitrocellulose and an explosive containing an oxidizing agent such as potassium nitrate or potassium chlorate as a supportive agent, and a metal powder such as magnalium that has a burning sustaining power and a transmitting ability. Gunpowder An ignition ball structure suitable for the explosive for an ignition ball according to claim 3.

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