Other

Fisher-Klosterman, Inc.

Willem J Hagendoorn

In a metallurgical process, a unique materials conservation and environmental process for treating cross materials at the site of a melting chamber by applying a preselected fines suppressing agent to stages of the dross materials promptly after removal from the melting chamber.

Method of treating dross materials in metallurgical melting processes

A method is provided for maintaining a predetermined effluent gas pressure within an electric arc melting furnace of the type having an off-gas duct system. The method involves establishing, by simulation, correlations between specific measurable physical characteristics within the furnace and in the off-gas duct system and then utilizing these correlations to establish a program for automatically varying the volume of off-gas flow through the duct to maintain effluent gas pressure within a desired range within the furnace. Sensors are provided in the duct system to monitor the physical characteristics in the off-gas flow and for transmitting data to a microprocessor adapted to operate flow-regulating apparatus in the duct system to thereby maintain the pressure within the furnace within a predetermined range. The preferred structure for implementation of the disclosed method includes sensors on the duct structure for constantly monitoring variable physical characteristics of the effluent flow within the duct, and control means adapted to be responsive to signals from the sensors and to operate the draft regulating apparatus to vary the effluent flow through the duct and thereby maintain the effluent pressure within a predetermined range within the furnace.

Method and structure for maintaining effluent pressure range within an

A filtering device for cleansing oil mist from an effluent flow includes a hollow casing containing a filtering media of packed particulate solids and channel means projecting into the media adapted to conduct an effluent flow to the media and disperse it therethrough whereby oil mist particles are retained in the media while the cleansed flow is admitted to the atmosphere. The particulate solids of the filtering media are of a material having an affinity for attracting and retaining oil and the material is disposed in successive layers such that the effluent must pass through a bed of graduated density whereby the filtering efficiency is enhanced.

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Louisville, KY, United States of America

Willem J Hagendoorn