Magnetic filtration performance of spongy metal

Abstract

Application of spongy nickel to a filter matrix in magnetic filtration has been examined experimentally with magnetite slurry. Collection efficiencies were measured for seven kinds of unit of l cm thickness. A magnetic field of 0.5, 1 and 1.5 kOe was applied by a solenoid The.flow rate was varied from 0.3 cm/sec to 3 cm/sec. With a unit of 108 μm frame diameter the maximum collection efficiency was greater than 99%. The deposition of magnetite per unit surface area of the matrix was greater than 5 mg/cm2. The nickel sponge is applicable to a magnetic filter matrix. The mechanism of filtration was the standard blocking filtration. © 1979, The Society of Chemical Engineers, Japan. All rights reserved.