Jiangsu Shagang Group Co., Ltd. has recently been honored with the title of National Metallurgical “Clean Production Environmentally Friendly Enterprise†by the China Iron and Steel Industry Association. This recognition highlights a major milestone in the company’s efforts to promote energy conservation, reduce emissions, and implement a low-carbon development strategy.
Despite operating in an era of shrinking profit margins, Shagang has continued to prioritize environmental protection and invest heavily in sustainable practices. The company has focused on desulfurization of sintering flue gas, while increasing investments in energy-saving technologies, air pollution control, and the comprehensive recycling of waste materials.
To date, Shagang has invested 150 million yuan in two sintering flue gas desulfurization systems. By using high-efficiency rotary spray technology, sulfur dioxide emissions have been reduced by over 8,000 tons annually. Today, the company emits less than 1 kilogram of sulfur dioxide per ton of steel, significantly below the industry standard of 1.8 kilograms.
In total, Shagang has spent more than 5 billion yuan on energy-saving and emission reduction projects, including the development of innovative technologies such as "new electric furnace hot-packing energy saving" and "one-step iron-making and steelmaking." Over 150 new energy-saving and emission-reduction technologies have been implemented, saving approximately 300,000 tons of standard coal annually.
The company has also invested tens of millions in dust removal and dehumidification projects, such as the renovation of the 5800m³ blast furnace ore dedusting system and the sinter plant car receiving tank dust removal. These improvements help reduce annual dust emissions by 260 tons. Additionally, a 100-million-yuan investment was made to build a steel slag processing line capable of handling 750,000 tons of slag annually, reducing unorganized dust emissions effectively.
In its sewage treatment initiatives, Shagang is expanding the second phase of its 40,000-ton wastewater treatment plant. Once completed, this project will boost water reuse rates and reduce chemical oxygen demand (COD) by 180 tons annually.
Shagang has redefined the traditional linear production model into a circular economy, transforming steel manufacturing from a “resources-products-waste†process into a “resources-products-renewable resources†cycle. As both a steel producer and a clean energy converter, the company has pioneered new models for cleaner production, resource utilization, and circular economy development.
By integrating energy efficiency, environmental protection, and low-carbon strategies, Shagang has implemented 49 major clean production projects. Through the application of the 3R principles (Reduce, Reuse, Recycle), the company promotes energy savings and resource utilization at different levels—within departments, between plants, and across the broader society.
Through initiatives like gas recovery, steam utilization, slag processing, coke by-product recycling, and industrial water reuse, Shagang has achieved significant environmental and economic benefits. The company now recycles over 96% of its resources, with the low-carbon economy contributing about 20% of total company profits.
Shagang has also established a number of waste utilization lines, including a steel slag brick production line and four slag micro-powder lines, with an annual capacity of over 3.6 million tons. These efforts not only address industrial pollution but also generate substantial circular economy revenue each year.
Additionally, Shagang has created a professional heating company that uses recycled steam as a resource. With a 15-kilometer steam pipeline network, the company supplies steam to more than 20 enterprises, including hotels and bathhouses. In 2012 alone, Shagang supplied over 200,000 tons of steam, delivering considerable social and environmental benefits.
Currently, Shagang is accelerating the implementation of its “Twelfth Five-Year Plan†energy conservation strategy. The goal is to achieve a total energy consumption of 578 kg of standard coal per ton of steel, a comparable energy consumption of 520 kg of standard coal per ton, and 3.5 cubic meters of new water per ton of steel. The water reuse rate is expected to reach 98%, with clean production reaching the highest level in the industry. These targets reflect the company's commitment to sustainability and its vision of becoming a leading environmentally friendly enterprise.
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