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ArcelorMittal Ostrava to Install Dust Collection Equipment at Sinter Plant

The company will equip the bands with bag filters which will collect up to 198 metric tons of fugitive emissions of dust per year. To complete the above-standard environmental investment projects worth more than 600 million crowns the mill has received 85% subsidy from the EU. The contract for dust collection equipment at the southern part of the sinter plant has been awarded to a consortium comprising AC Technologies, Hutní projekt Frýdek-Místek and Stamont. The filters for northern bands will be built by ZVVZ Milevsko. Like in the case of other environmental investment projects in the company with a total value of 2.6 billion crowns co-financed by the EU, the commissioning of the dust control equipment is planned by the end of 2015.
 
“The sinter plant is an operation that produces the most dust emissions of the entire mill; that is why we pay the highest attention to it. Thanks to the fact that we have already been meeting the future European emission limits, we can draw subsidies from the EU for further environmental projects,” says Petr Baranek, the chief green officer in ArcelorMittal Ostrava and adds that the company wants to continue with equipping its operations with the most up-to date environmental technologies.
 
The new dust collection equipment will capture dust particles released during cooling of sinter. Sinter is produced on sintering bands and cooled off on cooling bands where its temperature is gradually going down from approximately 850 degrees to a temperature lower than 100°C. The cooling of sinter is necessary in order to avoid burning of rubber conveyor belts which transport sinter to the blast furnace. Blowing of cold air to sinter releases and throws up dust. The new investment project will allow covering of all five cooling bands and extracting the air contaminated by dust beneath the cover by 80 meters long piping to two new bag-filter houses. This represents currently the best available solution for dust collection, which is able to collect even the smallest particulates.
 
In the southern part of the sinter plant dust emissions will be further reduced thanks to the equipment for sorting and subsequent storing of coarse bedding material. The northern part will benefit from technology for hot sorting of sinter. This technology is able to reduce the quantity of dust before sinter is placed onto the cooling band.
 
The dust control equipment for the cooling bands in the Sinter Plant worth 615 million crowns is part of a series of investment projects for improvement of the environment. By 2016 the company with the help of European funds should implement six projects focusing on dust collection of the sinter plant and blast furnace operations and one project focusing on reduction of nitrogen oxides from the power plant. The total value of the investment projects is more than 2.6 billion crowns while the company can receive up to 90% subsidy for the investment projects focusing on dust collection. Implementation of new bag-filter houses and reinforcing of dust collection to its technological maximum represents the highest contribution for the environment.