The Effect of Pretreatment on Magnetic Separation of Ferruginous Minerals in Bauxite | Zendy

R. Bhima Rao | Zendy; Laxmidhar Besra | Zendy; Benjaram M. Reddy | Zendy; G. N. Banerjee | Zendy

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The Effect of Pretreatment on Magnetic Separation of Ferruginous Minerals in Bauxite

Author(s) -

R. Bhima Rao,

Laxmidhar Besra,

Benjaram M. Reddy,

G. N. Banerjee

Publication year - 1996

Publication title -

physical separation in science and engineering

Language(s) - English

Resource type - Journals

eISSN - 1478-6486

pISSN - 1478-6478

DOI - 10.1155/1997/53574

Subject(s) - bauxite , calcination , magnetic separation , metallurgy , mineralogy , materials science , mineral , refractory (planetary science) , intensity (physics) , analytical chemistry (journal) , chemistry , environmental chemistry , physics , biochemistry , quantum mechanics , catalysis

Bauxite sample of Jamnagar, India, is suitable for refractory applications after separation of iron minerals. Different magnetic separators and intensities are studied on different treated samples. The results of these investigations indicate that removal of ferruginous minerals from crude sample requires a magnetic intensity of 14 000 Gauss. The calcined sample at 800℃ requires magnetic intensity of about 7000 Gauss, whereas the reduced bauxite needs less than 2000 Gauss for separation of iron and the product achieved contains 76% Al2O3 with 62% iron removal and 69% Al2O3 recovery. All these products are suitable for refractory applications.

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