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Low-Cost and Large-Scale Clean Steel Production Technology

机译：低成本，大规模的洁净钢生产技术

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摘要

As the market demand for clean steel increased, a number of new technologies for clean steel production have been developed in some domestic and foreign steelmaking plants. Based on the existing equipments and technical conditions in the No. 1 steelmaking plant of Ansteel, a series of clean steel technologies have been integrated including single bay duplex-dephosphorization in steelmaking control technology, high efficiency desulfurization technology, the control technology for nitrogen content during the whole process, the control technology for hydrogen content in VD, and the systematic control technology for oxygen content. A series of process for all kinds of ultra-low phosphorus, ultra-low sulfur and relative low level of inclusions have been designed in clean steel production. This process include hot metal desulfurization and slag-off, single bay duplexdephosphorization in BOF, molten steel slag-off, LF processing, VD processing, and continuous casting with protection, then a stable, low-cost and largescale production process has been formed. Applying this integrative technology, the sum of 5 major elements including phosphorus, sulfur, oxygen, nitrogen, hydrogen is less than 80x 10"6 in high alloy steel scale production, and the industrial applications for clean steel technology have been achieved.
机译：随着对清洁钢的市场需求的增加，一些国内外炼钢厂已经开发了许多清洁钢生产的新技术。根据鞍钢第一炼钢厂的现有设备和技术条件，已整合了一系列洁净钢技术，包括炼钢控制技术中的单机架双相脱磷，高效脱硫技术，炼钢过程中氮含量的控制技术。在整个过程中，VD中氢含量的控制技术以及氧含量的系统控制技术。在洁净钢生产中，设计了一系列针对各种超低磷，超低硫和相对低含量夹杂物的工艺。该过程包括铁水脱硫和排渣，转炉中的单槽双相脱磷，钢水排渣，LF处理，VD处理以及带保护的连续铸造，从而形成了稳定，低成本和大规模的生产工艺。应用这种综合技术，在高合金钢规模生产中磷，硫，氧，氮，氢等5种主要元素的总和小于80x 10“ 6，并且已经实现了清洁钢技术的工业应用。

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