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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:大连理工大学学报

Affiliation of Author(s):材料科学与工程学院

Issue:2

Page Number:188-193

ISSN No.:1000-8608

Abstract:Al-10% Al2O3 composite material is successfully fabricated by adding SiO2 into the pure aluminum melt, and used to engage in the electromagnetic separation experiment through the ceramic separation pipes of 30 mm diameter far bigger than the skin depth and hollow pipes. It is found that the Al2O3 particles accumulate in periphery of specimen by separation pipes with big diameter, which may be helped by the flow caused by electromagnetic stirring, although it takes more time to reach the periphery than that of hollow pipe. The continuous elimination results with the molten aluminum which contains 30-200 μm Al2O3 particles show that the average elimination efficiency is 96.15% and it increases to 97.30% when the magnetic induction intensity is 0.06 T, and the latter is higher about 1.15% than that without magnetic field. The continuous elimination results with the Al-10%Mg alloy show that without magnetic force, the percentage of oxygen in the alloy decreases from 0.0009% to 0.0004% after twice elimination and the elimination efficiency is 55.6%. When the magnetic induction intensity around the foam ceramic filter is 0.04 T, the percentage of oxygen decreases from 0.0014% to 0.0003% and the elimination efficiency is 78.6%.

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