iron and steel works "Zaporizhstal" steel works of Metinvest group annually on the diagnosis and maintenance of gas-cleaning systems for all six sintering machines are more than 42 million hryvnias.
the press service of the plant said that "Zaporizhstal" invested in environmental upgrades of sinter plant – installation of gas purification systems of sintering machines №1-6 – more than 1.2 billion.
Principle of operation of the gas cleaning systems for sinter machines is based on two-stage flue gas cleaning from dust up to 30 mg/m3 and up to 400 mg/m3 from sulfur dioxide in the baghouse filters. This is one of the most modern and efficient: 95% of gas-cleaning systems installed on the metallurgical enterprises of China, USA and Europe, equipped with such filters.
Gas cleaning equipment of sinter machines working properly due to the planned monthly technical service and diagnostics. According to the schedule of visiting each of the six sintering machines for maintenance, at the same time stop the diagnosis it gazoochistnoe system. Thus, the gas treatment system stops for maintenance only during a full stop of the sintering machine itself.
To diagnose the gas treatment in the exhaust stream injected contrast powder, sensitive to UV light. He passes through the bag filters and ultraviolet light lights shows the slightest flaws and develop on the sleeves. Filter elements, which detect the integrity violation, changing to a new one.
Reliable operation of a complex set of gas-cleaning systems provides a specialist service monitoring and performance control of gas cleaning of the sinter plant.
Each sintering machine has sensors that control emissions, which in the online mode, with a resolution in milliseconds, showing the efficiency of gas-cleaning equipment. The online monitoring allows you to control the final concentration of emissions of harmful substances at the exit to the atmosphere, and also enables operational management of the cleaning process, ensure the reliability and efficiency of operation of gas cleaning equipment.
Recall, since 2012, "Zaporizhstal" has sent ecomodernism about 15 billion hryvnia. The largest of the completed projects – ecological reconstruction of blast furnaces with the installation of modern aspiration systems of cast yards and bunker overpass, the construction of the only in Ukraine hydrochloric acid pickling line in cold rolling shop No. 1, commissioning of the complex return of industrial-storm drains, etc.
