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VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Danzig“
SUMMARY:Recycling of blast furnace sludge – best available technology
DESCRIPTION:Almost all the iron and steel manufactured in the world is made from pig iron produced by the blast furnace process (BF). However, the dust and especially the sludge represent a great challenge to improve the overall sustainability of this highly material and energy intensive industry. 

During the production of pig iron in blast furnace, a Zn- and Pb-containing sludge is generated in the air pollution control system. More than ½ of the mass input becomes outputs in form of off-gas and solid wastes/by-products. This toxic waste can be landfilled after dewatering and pretreatment, which is very costly. The sludge particles contain large amounts of Fe and C that could be recycled in the furnace. However, the Zn content of the sludge is high, and the Zn input to the blast furnace must be limited, so Zn has to be removed (major portion concentrated in the <20 µm). 

There are no standard plant concepts for a BF-sludge treatment plant. The process design and plant arrangement will primarily depend on the nature of the feed sludge and therefore will be based on pilot test work that is being performed in AKW Equipment + Process Design technical laboratory. 

On basis of the test results, the suitable and customized process solution will be developed, discussed and later on engineered and executed by AKW Equipment + Process Design. This unique process concept is presented in the following paper: multi-stages hydrocycloning, combined with thickening and filter pressing.
CLASS:PUBLIC
DTSTART:20220632T085500
DTEND:20220632T092000
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