Separation of Brick Particles from the Sand Fraction of Masonry Construction and Demolition Waste on the Basis of Their Magnetic Susceptibility

Abstract

In the processing of construction waste, the sorting of the delivered mixtures is one of the decisive process steps in order to produce recyclates that can be reused. In the fine-grain range, there is a lack of suitable processes for this. A procedure that has not been investigated so far is to separate concrete-mortar-brick mixtures on the basis of the magnetic susceptibility. Based on measurements of the susceptibility, sorting experiments were carried out using a rare earth roll magnetic separator. The positive results of the experiments described here call for further investigation of the performance of the sorting method.