Also known as light-burned magnesia ball, slag-forming magnesia ball, magnesia ball, converter slag-forming magnesia ball (including carbon balls), it is mainly made from light-burned magnesia as the raw material, with a certain amount of magnesite ore or carbonaceous raw materials added, through processes such as crushing, mixing, rolling, high-pressure forming, and drying. It is suitable for slag splashing protection of converters to improve the service life of the furnace lining.

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