On July 11, General Secretary Xi Jinping chaired the second meeting of the Central Committee for Comprehensive Deepening Reform, deliberated and adopted the Opinions on Promoting Energy Consumption Dual Control to Gradually Shift to Carbon Emission Dual Control. The meeting pointed out that from the dual control of energy consumption to the dual control of carbon emissions, we should adhere to the principle of first establishing and then breaking, improve the dual control system of energy consumption, optimize and improve the way of regulation and control, strengthen the basic capacity building of the dual control of carbon emissions, improve the supporting systems of the dual control of carbon emissions, and actively create conditions for the establishment and implementation of the dual control system of carbon emissions.
This year, the Ministry of Industry and Information Technology also issued the Catalogue of Technologies and Products Encouraging the Promotion and Application of Building Materials Industry (2023 edition), organized and carried out the Notice of Industrial Energy Conservation Supervision in 2023, emphasizing further strict energy efficiency constraints, promoting energy conservation and carbon reduction in key industries, reducing costs and increasing efficiency, and promoting the construction of a new type of building materials industry. Develop industry mandatory energy consumption quota standards, energy efficiency benchmarking level and benchmark level. At the
national level, the requirements for energy conservation and consumption reduction in the industrial sector have become increasingly clear. In recent years, the cement industry has made some achievements in overcoming difficulties on the road of energy conservation and carbon reduction, green and high-quality development, especially in the cement grinding system.
As a "big power consumer" in cement production process, high energy consumption and low efficiency of grinding system have always been the pain point of energy saving and consumption reduction in cement industry. Recently, China Cement Network invited Wu Yaoyao, a professor-level senior engineer of Sinoma International Engineering Co., Ltd. (Nanjing), to discuss and exchange the contents of energy saving and consumption reduction in cement grinding system.
Wu Yaoyao said that at present, there are many kinds of cement grinding systems, and different forms of grinding equipment and different functions of powder concentrators are arranged and combined to form cement grinding systems with different characteristics, which requires cement enterprises to make a comprehensive evaluation of the market, mixed material resources, capacity demand and other factors, tailor-made technical reform programs, and improve them. Only in this way can goal of energy saving and consumption reduction of cement grinding system be realized to the greatest extent.
Wu Yaoyao said: "The transformation of cement grinding technology should be in the direction of low-carbon cement."
At present, the view of making full use of industrial waste slag with cementitious activity such as steel slag and water granulated slag to replace part of clinker is in line with the development idea of green and low-carbon cement. There are various kinds of industrial waste slag, taking steel slag as an example, its mineral composition, metal content, free calcium oxide, free magnesium oxide and other components have brought certain constraints to the deep utilization of steel slag in the cement industry. On the basis of ensuring the quality of cement, it is necessary to conduct in-depth research on different kinds of industrial waste slag and combine grinding system innovation according to local conditions. Only in this way can we make full use of the activity of industrial waste residue and promote the green and low-carbon development of cement.
As the cement industry will soon be incorporated into the carbon emission system, Wu Yaoyao believes that cement grinding will become one of the main directions to help the cement industry reduce carbon emissions in a short time, especially in optimizing the utilization coefficient of clinker, so the energy-saving technology reform of cement grinding should be more targeted.
In recent years, the domestic cement industry has done a lot of work in energy saving and technical transformation, and some of the technical level has been in the forefront of the world. Wu Yaoyao said that the innovation of cement grinding system in the future should aim at the best exertion of cementitious activity of materials, and realize the green and low-carbon development of cement by means of separate grinding, blending and homogenization.
Change comes from reform, and reform can stimulate motivation. Energy-saving transformation of cement industry is not a temporary success, not one's own efforts, it needs perseverance and long-term success. As the key node of the green development of cement industry, cement grinding system should be paid more attention. On September 12-13,
2023, China Cement Network will hold the "2023 Cement'Double Carbon 'Conference and the 10th China Cement Energy Conservation and Environmental Protection Technology Exchange Conference" in Zhengzhou, Henan Province. At that time, Wu Yaoyao, a professor-level senior engineer of Sinoma International Engineering Co., Ltd. (Nanjing), will take "Energy Saving and Consumption Reduction of Cement Grinding System & Green Low Carbon" as the theme to discuss in depth the energy saving and consumption reduction of cement grinding system and the development of green low carbon.
At the same time, the medal ceremony of "2023 Advanced Enterprises of Double Carbon in Cement Industry" and the "Double Carbon" Equipment Exhibition will be held. After the meeting, we will also organize a visit to Jiyuan Zhonglian Cement Co., Ltd. "The world's first production line of carbon sequestration auxiliary cementitious materials and low-carbon cement from flue gas CO2 of steel slag capture cement kiln".
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