Dynamic Processes for Recycling of Low Quality Charge Materials


Melting processes may be classified into two groups-stationary and dynamic. In stationary processes (e.g. a reverberatory furnace), the pile of solid charge is more or less fixed in position, and any liquid motion is the result of natural convection. In dynamic processes there is active motion of the solid charge and melt inside the furnace caused by mechanical or electromagnetic forces. Each type of process was analyzed from the point of view of metal recovery and energy efficiency when charge materials of different metallurgical quality were used. The stationary processes minimize the oxidation of high quality charge materials (ingots, large size scrap) while dynamic melting processes have the possibility of increased metal recovery from low-quality scrap with high specific and oxidized surface, such as aluminum turnings and dross, with effective separation of melt from slag by the use of special fluxes. The parameters of melting low quality charge materials in a dynamic rotary furnace were experimentally studied and computationally modeled. Technical results will be presented of using 0.5 t rotary furnace for recycling locally sourced low-quality aluminum charge materials. The furnace has been used over a period of several years.


Materials Science and Engineering

Keywords and Phrases

Aluminum; Furnace; Melting; Recycling

Document Type

Article - Conference proceedings

Document Version


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