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sand processing 250 300th plant hdo for high iron sand wash

Apr 30, 1994 · A IRON-OXIDE-COATED SAND MEDIA. Graded Ottawa sand (99.5% SiO 2) with spherical grains of 20 to 30 mesh (0.60 to 0.85 mm) was used in the preparation of iron-oxide-coated sand (IOCS). The sand was acid washed, rinsed with deionized water, and dried at 110 °C. IOCS was prepared according to the method of Edwards and Benjamin (1989)

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