Author used laser beam to quench the surface of the ore milling roller, so that increase its surface hardness and improve its wear resistance properties, and prolong its service life.

笔者对磨辊表面进行激光束淬火处理，以提高磨辊的表面硬度，增强磨辊的抗磨粒磨损性能，从而达到延寿的目的。

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The grade of a raw ore is the basis of ore milling and ore dressing.

原 矿品位、回收率、尾矿品位三者是密切相关的。

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Particle size of ore powder can not be refined infinitely by milling, but its microcosmic crystallines can be refined gradually until amorphous structure is formed.

对于特定的一种球磨机，铁矿粉的粒度细化程度是有限度的，但其微观晶粒可以逐步细化直至晶粒完全无定形化。

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Because milling gold ore is an energy-intensive process, lower energy prices help to reduce operating costs.

FORBES: Magazine Article