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Pellet is a method of artificial bulk raw materials, is a process to change the powdery material into a physical property phase chemical composition that can meet the next step processing requirements. In the pelletizing process, the material not only has physical properties due to rolling into balls and dense particles, such as density, porosity, shape, size phase mechanical strength and other changes, but more importantly, chemical and physical chemical properties have occurred, such as chemical composition, reduction, expansion, high temperature reduction softening, low temperature reduction softening, melting and other ratios, so that the metallurgical properties of the material have been improved.
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