engleski

Alternative methods of aluminum alloys recycling in solid and semisolid state

This lecture deals with alternative methods of aluminum alloys recycling in solid and semisolid state. Recycling of aluminium as the second most commonly used metal is of extreme importance both for environment protection and the circular economy in the aluminium industry. There is a growing need for development of new recycling technologies and strategies with the aim of increasing the recovery rate for recycling of produced waste, as well as reduction of emissions of harmful pollutants into the atmosphere and mitigation of adverse environmental impact. Predictions show that the demand for aluminium at the global level will double by 2050. Problematic aluminium type of waste are machining chips due to the increased loss during conventional recycling by remelting. Part of our project is to propose alternative methods for aluminum chips recycling in solid and semisolid state in order to reduce material loss and energy consumption. First part of the lecture will explain aluminum recycling in solid state to produce quality recycled samples. Main used methods were compaction, hot extrusion and equal channel angular pressing. In second part, method based on aluminum metal foams production directly from machining chips, without commination step of the aluminum into powder, will be presented. Finally, last method will be for thixo feedstock material production directly from machining chips.

recycling alternative, aluminum foams, semisolid metal processing, machining chips

nije evidentirano