T. Xie, Longjun Xu, Chenglun Liu
Jul 1, 2013
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0
Influential Citations
36
Citations
Journal
Vacuum
Abstract
Abstract A kind of hard-magnetic material, strontium ferrite (SrFe 12 O 19 ) was prepared using Industrial Strontium Residue (ISR) as starting material. To optimize the conditions of recovery ratio of strontium element, the orthogonal design was carried out. The results showed the recovery ratio reached to 96.73%. The processes of recovery and preparation were suitable to industrial production. This research was therefore expected to reuse efficiently the ISR and prevent its environmental pollution. The prepared products were characterized by FTIR, XRD, SEM, and VSM. The results indicated the prepared SrFe 12 O 19 could be classified as hexagonal crystal with a better magnetic property. The Langmuir and BET models were separately used to calculate the specific surface area of the prepared SrFe 12 O 19 . The error analysis was performed by a comparison between experimental data and value calculated. These investigations revealed BET adsorption equation was more suitable for the surface area analysis of SrFe 12 O 19 . The N 2 adsorption on the surface of SrFe 12 O 19 could be categorized as multilayer adsorption. The specific surface area (BET) of SrFe 12 O 19 was 31.2434 m 2 /g.