In some cases, the desired pyrotechnic composition can be readily formed by simply blending the ingredients together using any desired means. However, sometimes pyrotechnic compositions can only be formed when they are mixed in special ways. Black powder for example, cannot simply be made by just blending the ingredients together. To form black powder and similar pyrotechnic mixtures, the ingredients of the mixtures need to be blended very thoroughly to form a uniform mix; solvents are also widely used to facilitate proper blending to maximize surface area. To mix these ingredients very thoroughly requires special mixing devices. There are two main types of mixing apparatus available. The most common is the “ball mill”, and “vertical mixer”. A ball mill is a simple device utilizing a central container, similar to an empty coffee can laying on its side, and a small electric motor. The electric motor rotates the coffee can utilizing a fan belt or similar band. The rotating speed can very from 50 to 1500 RPM, depending on the type of mixing desired. In some cases, steel balls, or other materials are added to the mill, so they produce a high surface area of blending and pulverizing when the can rotates. Ball mills are one of the most common apparatus used to form pyrotechnic compositions, such as black powder. Also, as mentioned, in other cases, an inert solvent is added to facilitate proper pulverization and coheasion with maximum surface area. The second most common type of mixer is a vertical mixer. There are two types of “vertical mixers”; a) a common blender, as found in your kitchen, using stainless steel blades, and b) a large capacity “vertical mixer” utilizing plastic or stainless steel pallet blades that rotate widely and at a uniform speed; similar to a bread blender you might have in your home. All ingredients are added when necessary, and the mixture can be dry blended, or “wet” blended using an inert solvent to facilitate maximum surface area. Now, these two types of mixers may have different names, but their method of work is the same. You can find out more about these mixing devices by conducting a search on the Internet.
✔ Author(s): Jared B Ledgard
✔ Title: The Preparatory Manual of Black Powder and Pyrotechnics version 4.0 Volume 1: Methods of forming pyrotechnic compositions I
✔ Rating : 4.6 out of 5 base on (73 reviews)
✔ ISBN-10: 1980538271
✔ Language: English
✔ Format ebook: PDF, EPUB, Kindle, Audio, HTML and MOBI
✔ Device compatibles: Android, iOS, PC and Amazon Kindle
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