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The loading systems of oxygen top-blown converters include: quantitative loading system, staged quantitative loading system and fixed-depth loading system. Among them, the fixed-depth charging system ensures that the depth of the molten pool remains unchanged due to the charging amount in each furnace. Due to the constraints of the products organization, it is actually difficult to achieve.
(1) Quantitative loading system. The charge per furnace remains constant during the entire furnace service period. The advantages of this loading system are: it maximizes the potential of the equipment, the products organization and operation are stable, and it is conducive to the realization of automatic process control. However, the molten pool is deep in the early stage of furnace operation and becomes shallow in the later stage, so it is only suitable for large and medium-sized converters. Quantitative loading system has been widely adopted in large converters at home and abroad.
(2) Phased quantitative loading system. During a furnace service period, it is divided into several stages according to the degree of furnace expansion, and each stage is loaded with a certain amount. This not only maintains a relatively suitable furnace volume ratio and molten pool depth in the entire furnace operation, but also maintains the relative stability of the charging amount in each stage; it can not only increase the charging amount, but also facilitate the organization of production. This is a more adaptable loading system. This loading system is commonly used in all medium and small converters in my country.
Link to this article：Types and characteristics of loading systems used in production
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