Lindberg MPH, Riverside, Mich., has shipped a gas fired aluminum stack melting and holding furnace for producing aluminum ingot and sows. The furnace has a melt rate of 4500 pounds per hour.
In this application, the stack will be fed continuously, which maximizes efficiency in keeping the stack full, especially with a low-density charge that aluminum scrap can present. As it melts, the metal flows into the holding chamber where it is alloyed to a certain specification. In addition to low fuel consumption, this technology lends itself to lower metal loss due the burning off of contaminants in the stack. Equipment motion, temperature control, combustion control, stack level control, metal level control, and fault annunciation functions are handled by a programmable logic controller and HMI in the control panel.
The furnace is designed with access grating and a ladder for safe access to roof mounted equipment during maintenance. A three-point laser metal level sensor is provided which notifies operators of the current furnace metal level through an attached light tree.
