<論文>ウォルフラマイト微粒子のキャリア磁選に関する研究

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Carrier magnetic separation of fine wolframite (-5!1 m) was investigatedusing coarse magnetite (37~53!1m, etc.) as carriers and sodium oleate as asurfactant by high gradient magnetic separator. Effects of some factors onthe carrier magnetic separation were studied. It was found that the recovery offine wolframite was significantly increased from about 23 % by conventionalmagnetic separation to 94% by carrier magnetic separation at magnetic fluxdensity 0.14T. The recovery of fine wolframite was improved from 50% to 93%by carrier magnetic separation at 0.27T for a mixture of wolframite (-5!1 m)and quartz (-lO!1m) containing 10.9% W03.The improved results of magnetic separation were mainly explained by thesize enlargement of the fine wolframite due to the addition of carriers and stirringat high speed. The collision energy between the coarse and fine particlesis much greater than that between fine particles. Therefore, aggregation betweencoarse and fine particles occurs more easily. The stability of aggregateof particles is also strengthened due to the hydrophobic forces between particleswith the addition of sodium oleate.
秋田大学の論文