Mill Scale is the crusty/flaky surface that forms when working on hot metal that has been rolled. To picture this, think about a movie you’ve seen where metal was heated up and pieces were coming off when the blacksmith was working on it. That’s mill scale. Mill scale is a lower grade scrap that can be reused to avoid waste. Below are 10 ways mill scale is reused:
1. Counterweights
During the manufacturing and machining process, composite counterweights are needed. Mill Scale can be reused to fit this purpose.
2. Batteries
Mill scale bi-product can be made into the negative electrode or plates in alkaline batteries.
3. Brakes
Brakes in cars need a material that can withstand a high degree of friction to stop. Mill scale can be used along with sponge iron to product brakes.
4. Water and Soil Treatment
Water and soil containing halogen compounds can be purified by mill scale particles and can help to decontaminate ground water or contaminated soil.
5. Stone Production
Mill Scale can be used to produce high grade stones.
6. Road Construction
When building roads, mill scale can be added to enhance the quality of the surface of the road.
7. Radiation Shielding
Dry mill scale can be used to produce electromagnetic radiation blocking products.
8. Iron Oxide Paint
Iron oxide paint pigments are used in paint and mill scale can be mixed to adjust the pigment of the paint.
9. Mixed Fertilizers
When properly mixed, mill scale can boost the effectiveness of some fertilizers.
10. Foundry Iron
Foundry iron can be produced by mixing iron, steel scrap, and mill scale to produce an alloy metal.
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