As a result of steelmaking processes, emissions of pollutants are inevitably generated. In steel production, the main emissions are carbon monoxide (CO), sulphur oxides (SOx), nitrogen oxides (NOx), particulate matter (dust) and volatile organic compounds (VOCs). The main source of formation of carbon monoxide and nitrogen oxides is fuel combustion. Also, significant volumes of carbon monoxide are generated during the blast furnace production stage. Sulphur oxides emissions are generated by oxidation of sulphur contained in ore or coking coal. Dust is produced during all stages of metallurgical processing (sintering, blast furnace stage, steelmaking, rolling production) and also in result of our coal mining activities, mainly during transportation and storage of coal. Volatile organic compounds are mainly associated with coke production.
EVRAZ recognises that its business activities produce a large volume of air emissions, and that these could potentially cause adverse impacts on human health and the environment. We implement best available technologies and regularly upgrade equipment, and in addition all emissions are frequently monitored in order to minimise the risk that acceptable limits are breached. The emission reduction targets are included in our Environmental strategy, according to which we plan to reduce atmospheric emissions from steel production by 33% and dust emissions from coal mining by 1.5 times.
To achieve the goals of the Environmental strategy, we implement a number of measures to reduce our air emissions. These measures include technical overhauls of our steel production facilities, commissioning of dust suppression units. We are also planning a number of projects aimed at modernising coke production in order to reduce air emissions.
Our key emissions include sulphur oxide (SOx), nitrogen oxide (NOx), volatile organic compounds (VOCs), and particulate matter (PM). Total key air emissions in 2020 were down 5.3% against the 2019 level.
To attain the Environmental strategy goals, EVRAZ implements various activities and investments, including those within the scope of the Clean Air project.