On November 3, Huang Runqiu, Minister of the Ministry of Ecology and Environment, chaired the executive meeting of the Ministry, deliberated and approved in principle the "Total Quota and Allocation Scheme for Steel, Cement and Aluminum Smelting Industries in the National Carbon Emissions Trading Market in 2024 and 2025", which delineated a clear path for the low-carbon development of the industry.
Cement industry is the pillar industry of the national economy, and its production process is accompanied by a large amount of carbon dioxide emissions, accounting for an important share of the total industrial carbon emissions in China, which is the key industry in the promotion of the "double carbon" goal in China. At the same time, as an indispensable core material in the field of infrastructure, the low-carbon transformation of the cement industry is not only directly related to the implementation effect of the national carbon emission reduction task, but also affects the green coordinated development of the upstream and downstream of the industrial chain. It shoulders an irreplaceable important responsibility in the implementation of the strategy of "carbon peak, carbon neutralization", and its transformation effect has a key impact on promoting the comprehensive green transformation of the economy and society.
Faced with the huge pressure of carbon emission reduction in the cement industry, the steel slag carbon capture technology independently developed by Shijing Science and Technology has come to the fore in recent years. With the double breakthrough of "solid waste recycling + carbon emission reduction", it has taken a low-carbon road with win-win economic and environmental benefits, and has become an innovative model under the goal of double carbon. The steel slag carbon capture technology of Shijing Science and Technology, the "hard-core solution"
to solve the double problem, has jumped out of the dilemma of high cost and difficult landing of traditional carbon capture, and achieved a number of key breakthroughs.
This technology takes steel slag as the core raw material and directly captures CO CO in the flue gas of cement kiln and lime kiln through the dry in-situ capture process, which not only thoroughly solves the problem of poor stability of steel slag, but also significantly improves the activity of steel slag and converts industrial solid waste into high-activity carbon sequestration auxiliary cementitious materials. It breaks through the technical bottleneck of large-scale, safe and high value-added application of steel slag in the field of building materials
at one stroke, and achieves the effect of "killing three birds with one stone": it not only reduces the emission of CO in industrial flue gas, but also absorbs the solid waste of the iron and steel industry, and also produces high-value low-carbon building materials. Let "carbon reduction" become a business that can bring huge profits to customer enterprises.
From the first line to the large-scale practice
, the strength of technology needs to be tested by practice. Shijing Science and Technology has written the landing answer sheet of steel slag carbon capture technology with benchmarking projects. In November
2022, the world's first low-carbon cement production line with steel slag capturing cement kiln flue gas CO CO was completed and put into operation, which took the lead in verifying the feasibility and stability of the technology and provided a replicable practical sample for the low-carbon transformation of the industry. In April 2023, the world's first Yongfeng project using steel slag to capture CO from lime kiln flue gas was put into operation, with an annual treatment capacity of 300,000 tons of steel slag, 16,000 tons of CO captured and utilized, and 600,000 tons of high-efficiency composite mineral admixtures produced simultaneously, realizing the large-scale application of resource recycling. In May
2024, Shijing Science and Technology and Baowu Group signed a formal contract for the Egang project, marking that the technology has been recognized by the industry leader. With an investment of 144 million yuan, the project will produce 1 million tons of high-efficiency composite mineral admixtures annually, directly capture 20000 tons of CO and reduce 250000 tons of carbon comprehensively, which will push the synergistic effect of steel slag recycling and carbon emission reduction to a new height and become a model of cross-industry cooperation in carbon reduction. The dual empowerment
of
economic and social benefits of Shijing technology steel slag carbon capture technology not only brings tangible economic benefits to enterprises, but also creates far-reaching social value. In terms of
economic benefits, the technology transforms "waste" such as steel slag and CO into high value-added products, reduces the cost of solid waste treatment and carbon performance, and opens up a new profit growth point, so that low-carbon transformation from "cost burden" to "income engine". In terms of environmental benefits, the project not only reduces industrial carbon emissions, but also solves the problems of land occupation and environmental pollution caused by steel slag stockpiling, which injects innovative power into ecological protection.
From the perspective of industry impact, this technology provides a new path of low-carbon development with low cost and easy landing for the cement industry, and also provides an effective solution to the problem of solid waste treatment in the iron and steel industry, promotes the formation of a virtuous circle of coordinated carbon reduction between the two energy-consuming industries, and provides technical support for the efficient operation of the national carbon market. Broad prospects
under the expansion of the
carbon market As the national carbon market has brought steel, cement and other industries into full control, the pressure of carbon emission reduction continues to increase, and the steel slag carbon capture technology of Shijing Technology has ushered in a broader application space.
On the one hand, the technology can be widely adapted to the demand for flue gas CO CO capture in cement kilns, lime kilns, iron and steel smelting and other scenarios, covering more energy-intensive enterprises; on the other hand, the output of low-carbon building materials can be used in construction, infrastructure and other industries, with huge market potential.
In the future, with the continuous optimization and large-scale promotion of technology, Shijing Technology will not only further consolidate its technological advantages in the field of double carbon, but also provide strong technical support for China's double carbon industry, help build a more effective and dynamic carbon market, and contribute more innovative forces to the overall green transformation of the economy and society.
From the exploration of the first production line to the promotion of large-scale projects, Shijing Science and Technology has proved with innovation and practice that the road of green development is getting wider and wider. Under the guidance of the goal of double carbon, this innovative achievement of "turning steel slag into treasure and making the best use of carbon" will surely take root in more industries and fields, and write a new chapter of win-win ecological and economic benefits.
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