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2025 Iron & Steel Metallurgical Solid Waste Comprehensive Utilization Technology Exchange Conference ▲

The 2025 Iron and Steel Metallurgical Solid Waste Comprehensive Utilization Technology Exchange Conference, together with the on-site promotion meeting for the demonstration project of advanced steel slag high-temperature and high-pressure modification technology for construction sand (7th edition), was recently held in Wenxi, Shanxi.

The conference brought together industry experts and scholars, representatives of steel enterprises, and numerous enterprises engaged in steel slag utilization technology, equipment, and investment. Participants focused on high-value, full-volume, and large-scale efficient utilization of steel solid waste, working to address outstanding challenges in the sector and to promote practical advanced technologies, equipment, and typical demonstration cases for the comprehensive utilization of steel solid waste.

Liu Changsheng, Deputy GM and Chief Engineer of Taiji Environmental Protection, delivering a report ▲

During the conference, Liu Changsheng, Deputy General Manager and Chief Engineer of Taiji Environmental Protection, delivered a presentation titled "Regional Circular Economy — Steel Slag Desulfurization and Comprehensive Utilization of By-products."

The report reviewed, from three perspectives — technical background, key features, and engineering applications — Taiji's innovative use of steel slag to replace lime (limestone) as the desulfurization absorbent. This not only substantially lowers desulfurization costs but also achieves synergistic solid waste treatment and reduces CO₂ emissions. The desulfurization by-products have broad applications: they can serve as building materials or be further processed into soil amendments for ecological restoration projects such as saline-alkali sandy wasteland reclamation and mine rehabilitation, truly realizing waste-to-waste treatment to enable resource reuse and synergistic solid waste management, while reducing absorbent costs by two-thirds and delivering cost reduction and efficiency improvement.

Liu Changsheng then held in-depth discussions with participants on the technical processes of the Delong model of steel slag desulfurization (steel slag sintering machine desulfurization) and the Baogang model of steel slag desulfurization (steel slag coal-fired boiler desulfurization).

Taiji Environmental Protection model display ▲

During the conference, delegates stopped by Taiji's booth to inquire in detail about the technical features of circular economy technologies, hazardous waste valorization, and flue gas treatment.