Construction of coke oven battery No 12 is underway at Russian steel maker Magnitogorsk Iron and Steel Work. The capacity of the new coke oven battery will be 2.5 million tonnes of dry coke per year. The general contractor for the construction is Sinosteel Equipment & Engineering and the cost of the project is about 75 billion rubles. The construction of the complex is planned in two stages. At the first stage, the construction of two units of a coke oven battery with a coal tower and two units for dry coke quenching. Also, at the first stage, a coal preparation unit, coke sorting facilities, a desulfurization and denitration plant, a liquid ammonia warehouse, an air compressor and firefighting pumping station, and engineering facilities will be built. At the second stage, two more blocks of a coke oven battery with a coal tower and technological units will be erected. The sequential launch of the coke oven battery complex No 12 is scheduled for 2023,Modernization of production will ensure the reduction of gross emissions of pollutants into the atmosphere by 11.35 thousand tonnes per year and waste-free production through the introduction of a dry coke quenching unit. The dry quenching technology will make it possible to utilize coke heat, as well as to obtain steam for technological needs and power generation, creating an additional power capacity of two turbo generators with a capacity of 20 MW each after the boilers of the dry coke quenching unit. This method of power generation is fuel-free as it is based on the use of hot coke heat to convert water into steam, which then enters the steam turbine generators.The new coke oven battery plays a special role in terms of reducing the carbon footprint of the entire plant. The reduction of CO2 emissions will amount to 2.2 million tonnes per year, and the carbon footprint of PJSC MMK will decrease by -8.5%. This will further bring MMK closer to achieving its production decarbonization goals.The construction of a biochemical plant and coke oven battery No. 12, as well as the modernization of the chemical products capture and processing shop are elements of a comprehensive reconstruction of MMK's coke production, the main goal of which is to radically reduce the technological impact on the environment and fulfill environmental tasks as part of the Federal project "Clean air".