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The combination of several physical and chemical processes for cleaning flue gas in a single hightemperature filter is a promising technology. The effect of catalytic phoresis on solid-particle collection efficiency is evaluated. A three-level mathematical model describing sedimentation of the catalytic coating on autofilter layers and the filter base layer is presented. Calculation of the filtering of highly dispersed particles with a working catalyst using the proposed model allows the best modes of filtering devices and their design and operating parameters to be chosen.

The company TECHCOM has come up with several innovations to separate slag from liquid steel as it is tapped and flows to the ladle. The effectiveness of the methods was checked on cold models using potassium iodide and colored kerosene to simulate steel and slag, respectively. It was found that the methods proposed by TECHCOM ensure complete separation of the slag from the steel. The article also discusses the conceptual framework for a technology that allows slag to undergo its initial processing next to the steelmaking furnace.