Construct a matrix array using appropriate splits for the materials separation system consisting of a trommel screen, a magnet, and an air classifier. If the objective is to produce clean ferrous (expressed as both the recovery and purity), which configuration would be chosen? Assume three materials make up the mixed feed: paper, ferrous, and glass. Table P6-25 provides the feed tonnages and the splits (a split is defined as the fraction continuing on, or rejected by the unit operation):
