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Multi-Chamber Furnaces

Multi-Chamber Furnaces

Twin Chamber Furnaces

Multi chamber and sidewell melting furnaces incorporate a combination of a clean scrap melting chamber and a contaminated scrap melting chamber in a single furnace.

Molten metal circulation between chambers is via EMS or EMP electromagnetic pump system or mechanical centrifugal pump. The contaminated scrap chamber comprises a dry hearth section for ‘pyrolosis’ of VOC's and hot gas fume recirculation system for regeneration of energy contained within the VOC's. An incineration burner is integrated into the recirculation system to destroy and oxidise VOC's. Clean fumes and energy are recirculated from the incinerator back to the pyrolosis chamber by a hot gas fan.

Scrap is pushed into the bath section for indirect melting through the molten metal circulation from the clean chamber, the energy required for melting is from the clean chamber usually high efficient regenerative burners.

The furnace is designed for low fuel consumptions and high metal recovery rates.

Scrap charging will be via a dedicated charge machine with fume collection hood integrated, during charging this hood seals with the furnace to eliminate fugitive emissions entering work shop area.

All fumes are collected from the furnace and directed to the air pollution control system, Lime and PAC will be utilised to neutralise acid gases and destroy dioxins. Emission figures will be guaranteed to meet current worldwide legislations.

Typical scrap types include painted and anodised extrusion sections, thermal break, UBC, litho, oily rolling mill scrap, fragmentised scrap.

This type of furnace is usually of static design, but tilting versions can be implemented in some circumstances.

A third separate holding chamber can be incorporated for holding metal for certain casting operations.

Sidewell Furnace

Scrap is charged directly in to an open or closed sidewell, metal is circulated via chambers by mechanical centrifugal pump, EMS or EMP.