how to make gunpowder: 8 steps (with pictures) - wikihow

how to make gunpowder: 8 steps (with pictures) - wikihow

wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 72 people, some anonymous, worked to edit and improve it over time. There are 9 references cited in this article, which can be found at the bottom of the page. This article has been viewed 1,263,873 times. Learn more...

Gunpowder, also called black powder, is a simple mixture of saltpeter, sulfur, and charcoal. The trickiest part of making black powder is sourcing these three supplies. Once you find them, you mix them together and create an explosive black meal. Be extremely cautious when handling black powder, and make sure to store it away from heat and flame. Read on to learn more about how to make gunpowder.

To make gunpowder, start by buying saltpeter, which you can either do online or by looking for stump remover at a garden store. Then, grind separately the saltpeter, charcoal, and elemental sulfur into powders using a mortar and pestle. Before mixing the powder, decide how much gunpowder you want, then use a scale to measure out the components, which should be 74.8 percent saltpeter, 13.3 percent charcoal, and 11.9 percent sulfur. To mix the ingredients, put them in a mortar and pestle, dampen them with water for safety, and grind them for 10 minutes. For tips on how to store gunpowder safely, read on! Did this summary help you?YesNo

control of a closed circuit cement mill - sciencedirect

control of a closed circuit cement mill - sciencedirect

The design of a control system for a closed circuit mill is developed. The control strategy is to estimate the point of instability for the unit and to control the mill at a constant value away from this point.

Several models of the mill are presented. The first is a high order model which is used to develop a simplified continuous model. This is discretized to yield a third order nonlinear model with measurement noise.

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