Mill scale as a ballasted flocculant for enhancing the
Oct 01, 2020· The dried particles were ground in a ball mill (Daihan scientific, Korea) for 2 h and homogenized powder was sieved with <45 μm and 45∼75 μm mesh sizes using motorized sieve (Model: 203/50 CISA, Spain). The density of mill scale was 5.2 ± 0.2 g cm −3. Fig. 2 shows the steps involved in magnetic separation process.