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The company is a specialized R&D and manufacturing enterprise focusing on metallurgical steelmaking equipment, smelting sensors, and intelligent steelmaking software and hardware.
The secondary lance is the primary equipment for computer‑based dynamic control of the converter.
The secondary lance is the primary device for computer‑based dynamic control in the converter. It consists of a water‑cooled, three‑layer steel tube and is equipped at its lower end with an electrode holder that accommodates probes for temperature measurement, carbon determination, oxygen analysis, and molten‑steel level sensing. By integrating with the metallurgical model, it enables automated control of the smelting process. The system comprises a rotating frame, a lifting lance body, a probe‑feeding mechanism, and other components; it features a water‑cooling design and multiple safety safeguards, achieving carbon and temperature prediction accuracies exceeding 90%. Its dynamic control model is based on static thermal equilibrium calculations and real‑time monitoring of molten‑steel parameters, supporting fully automated steelmaking with a single‑button operation.
In China, Baosteel and Wuhan Iron & Steel were the first to apply secondary lance technology to achieve dynamic control, with a dual‑target hit rate for carbon and temperature at the endpoint exceeding 90%. The domestically developed secondary lance system, independently researched and engineered by companies such as MCC Jingcheng and HBIS Group, boasts fully independent intellectual property rights, delivering an endpoint hit rate of over 92%, reducing per‑ton steel costs by 2–3 yuan, and shortening the smelting cycle by 2–3 minutes. The domestic equipment features a rotary design that enhances maintenance efficiency, with a failure rate below 1% and an installation success rate exceeding 99%; its overall cost is only one‑third to one‑quarter that of imported systems. At Ansteel, the integration of secondary lance and bottom‑blowing technologies has enabled highly efficient, low‑consumption production, achieving a carbon‑oxygen product of less than 0.00188.
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