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随着技术的进步,锰铁作为钢的脱氧剂和添加剂,要求其所含杂质极少,特别是碳和磷。以前用湿法生产的电解金属锰,火法生产的中碳锰铁、低碳锰铁作钢的脱氧剂和添加剂。虽然电解金属锰的锰品位高,硅、碳含量低,但氧、硫含量和生产成本均高;中低碳锰铁虽然较便宜,氧、硫含量低,但要达到低碳、低硅、低磷还是很困难的。生产中低碳锰铁用含碳少的硅锰作中间合金,用锰矿脱去硅锰中的硅。若使中低碳锰铁的碳含量低,硅锰的硅必须高,从而增
As technology advances, ferromanganese as a steel deoxidizer and additives require very little impurities, especially carbon and phosphorus. Electrolytic metal manganese produced previously by wet process, medium carbon ferromanganese produced by fire method, and low carbon ferromanganese as steel deoxidizer and additive. Electrolytic manganese metal has high manganese grade, low silicon and carbon content but high oxygen and sulfur contents and high production costs. Although low-carbon ferromanganese is cheaper, with lower oxygen and sulfur content, it needs low carbon, low silicon, Low phosphorus is still very difficult. The production of low-carbon ferromanganese with less carbon-containing silico-manganese as the master alloy, manganese ore with silicon in the silicon off. If the carbon content of low-carbon ferromanganese is low, silico-manganese silicon must be high, thereby increasing