en.Wedoany.com Reported - Indonesia Tsingshan Steel Co., Ltd., located in the Tsingshan Industrial Park in Morowali Regency, Sulawesi Province, Indonesia, ignited its 1,216 cubic meter blast furnace on April 10, 2026. From June 12 to 24, daily output steadily rose from 4,703 tons to 5,018 tons, achieving a blast furnace productivity coefficient of 4.13 tons per cubic meter per day.
The key milestones for the construction and commissioning of this blast furnace were clear and orderly: hot stove drying was completed on February 19, 2026; furnace body drying was finished on March 4; full system pressure testing and leak detection were completed on March 25; and finally, ignition was achieved on April 10. After ignition and production commencement, the on-site team focused on orderly slag and iron tapping, precisely controlled the pace of tuyere opening and air volume increase, and simultaneously implemented rapid silicon reduction, coal injection, and oxygen enrichment operations. On just the ninth day of production, the blast furnace's daily molten iron output exceeded 4,150 tons, quickly stabilizing at a daily production level of 4,500 tons. In the month following startup, total iron production reached 138,300 tons, gas utilization rate remained stable above 45%, monthly fuel ratio was controlled at 517 kg/t, average sulfur content in molten iron was only 0.013%, and average physical heat reached 1,503°C.
After the blast furnace's daily output stabilized at 4,500 tons, the original design flaws in the circulating water system gradually became apparent, forming a bottleneck restricting capacity release. The technical team completely resolved the risk of sump emptying by optimizing the exhaust structure of the return water pipeline and improving pump unit operating conditions. To address the high temperature differential issue in the cooling stave small cooling pipes, an online outlet pipe modification was implemented, restoring the temperature differential indicator to the standard range. After eliminating equipment bottlenecks, the on-site team fully implemented the "Four Highs and Two Larges" smelting process—high blast pressure, high blast temperature, high oxygen enrichment, high top pressure, large air volume, and large ore batch.
The company's supporting production facilities include a 210-square-meter sintering machine (officially commissioned in March 2026), and two 12-square-meter rectangular shaft furnaces still under construction, planned for commissioning in August 2026. This 1,216 cubic meter blast furnace has officially entered the ranks of benchmark high-efficiency smelting for furnaces of the same volume class.
