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EAF + LRF + CCM: Applicable to conventional high-quality alloy steels
This process is suitable for producing high-quality alloy steels with low gas content requirements. The electric furnace stage mainly controls the content of harmful elements and performs preliminary deoxidation during the steelmaking process. After the refining furnace (LRF) receives the steel, it further deoxidizes and accurately adjusts the composition and temperature, and then sends the molten steel to the continuous casting machine (CCM) for casting. Under strict process control, it can also be used to produce special steels with low gas content.
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EAF + LRF + VD + CCM: Applicable to high-cleanliness alloy steels
This configuration is suitable for steels with high requirements for gas and inclusion control, such as pipeline steel, bearing steel and gear steel. Adjust the alloy composition and slag fluidity in the refining furnace, and control the molten steel temperature to match the continuous casting requirements. After VD (vacuum degassing) treatment, dehydrogenation, desulfurization and trace element control are effectively achieved, which greatly improves the cleanliness of the molten steel and meets the technical standards for high-end steel.
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EAF + LRF + RH + CCM: High cleanliness and precise temperature control
This combination is characterized by the combined use of LRF and RH (Ruhrstahl-Heraeus process). First, the molten steel is heated, reductively refined and pre-deoxidized through LRF, and then transferred to the RH device for deep dehydrogenation and secondary deoxidation. This process can significantly improve the cleanliness of the molten steel and accurately control the temperature of the molten steel, which is suitable for multi-stream continuous casting and multi-furnace continuous casting. It has been successfully applied to the production of bearing steel and high-quality spring steel.
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EAF + AOD (or VOD) + CCM: Dedicated to stainless steel production
This is one of the mainstream processes for stainless steel production. The electric arc furnace first provides stainless steel mother liquor, and then decarburization, desulfurization and dephosphorization are carried out in AOD or VOD, and reductive refining is completed. Finally, the molten steel is sent to the continuous casting machine for casting. If the LF furnace is further introduced for composition fine-tuning and temperature control, a three-step method (EAF + AOD + VOD + LF + CCM) is formed, which performs particularly well in the production of low-carbon and low-gas content stainless steel.
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IF + LOD + LRF + CCM: A low-cost and efficient solution for small steel mills
This process is designed for small and medium-sized steel mills, mainly producing ordinary carbon and low-alloy steels such as rebar, wire rod and steel. After the induction furnace (IF) smelts scrap steel and part of pig iron, the molten steel enters the LOD furnace independently developed by our company to complete decarburization, dephosphorization and bottom blowing and stirring. Then it is further desulfurized and the composition is adjusted in the LF, and finally sent to the continuous casting machine. This process not only retains the advantages of the induction furnace with small investment and convenient operation, but also significantly enhances its refining capacity, so that it can adapt to diversified raw materials and market demand.
