Benefit is the lifeblood of enterprise survival. When carbon emission reduction becomes an inevitable trend in the development of the cement industry, if the huge capital investment only stays in the form of "carbon emission reduction", it can not be translated into actual benefits, which is undoubtedly a poison to quench thirst for cement enterprises and accelerate the decline of enterprises. Therefore, how to combine "carbon reduction" with "profit" organically has become a key proposition for the cement industry to achieve sustainable development. The technology of "steel slag + carbon dioxide = cement clinker" independently innovated and developed
by Shijing Science and Technology provides a valuable solution to this problem.
As early as November 2022, the world's first steel slag capture cement kiln flue gas CO2 production line for carbon sequestration auxiliary cementitious materials and low-carbon cement was completed and put into operation. The project not only reduces the emission of CO2 from cement kiln flue gas, but also successfully solves the problem of poor stability of steel slag, significantly improves the activity of steel slag, and prepares auxiliary cementitious materials with high activity and carbon fixation. It breaks through the technical bottleneck that has long restricted the large-scale, safe and high value-added application of steel slag in the field of building materials in China. The operation of this project has pointed out the direction for the low-carbon development of the cement industry, and has become an important example to achieve the unity of economic and environmental benefits. The
data show that the project has an annual production capacity of 300000 tons of steel slag for co-production of carbon sequestration auxiliary cementitious materials, which can directly capture and utilize 16000 tons of CO2 in cement kiln flue gas annually, and reduce carbon by about 250000 tons in society.
Not only that, the technology of Shijing Technology has continued to blossom in many projects. In April
2023, the world's first project to capture CO2 from lime kiln flue gas using steel slag was completed and put into operation, and the Yongfeng project handled 300000 tons of steel slag annually. It can directly capture and utilize CO2 in 16000 tons of lime kiln flue gas, and has the capacity of producing 600000 tons of high-efficiency composite mineral admixture annually. On May 21,
2024, Shijing Science and Technology and Baowu Group jointly signed a formal contract for Baowu E Steel Carbon Capture and Industrial Solid Waste Resource Utilization Project, which is a landmark event of great significance. Located in the plant area of Echeng Iron and Steel Co., Ltd. of Baowu Group, Ezhou City, Hubei Province, the project plans to invest 144 million yuan to build several production systems. After the project is put into production, the annual output of high-efficiency composite mineral admixture is 1 million tons, which can directly capture and utilize 20000 tons of carbon dioxide, and the comprehensive carbon reduction is 250000 tons. The project uses non-carbon raw materials such as steel slag to capture flue gas CO2 in situ at low cost, so that steel slag can be transformed into a carbon-fixing auxiliary cementitious material for low-carbon cement production, and can also cooperate with other materials to prepare high-efficiency composite mineral admixtures, which are widely used in many industries.
From the successful commissioning of the first production line to the continuous advancement of many projects, Shijing Science and Technology has proved that "carbon reduction" and "profit" are not irreconcilable contradictions. Its research and development of steel slag CO2 capture technology not only explores a new path of low-carbon development for cement industry, but also provides an effective solution for iron and steel enterprises to solve the problem of steel slag treatment. The implementation of
these projects not only sets an industry model, promotes the coordinated development of low-carbon steel and green building materials industry, actively responds to the "double carbon" policy objectives, and promotes social well-being; It also effectively enhances the efficiency of solid waste disposal in enterprises, realizes the large-scale collection, resource conversion and high value-added utilization of steel slag waste, opens up a new economic growth point, and truly realizes the win-win of economic and environmental benefits.
With the continuous maturity and promotion of technology, it is believed that Shijing Technology will bring new opportunities for green development to more industries, promote more enterprises to move forward steadily on the road of "carbon reduction and profit", and inject strong impetus into the realization of the "double carbon" goal.
In order to accelerate the realization of the "double carbon target" and actively promote the green and high-quality development of the industry, China Cement Network will hold the "2025 China Cement Double Carbon Conference and the 13th Energy Conservation and Environmental Protection Technology Exchange Conference" on May 27-28, 2025. At the same time, the release ceremony of "2025 ESG Ranking List of Cement Industry" was held . This conference will bring together industry elites and multi-resources to provide all-round support for the industry in terms of technology, policy landing and resource docking.
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