高チタン滓の流動塩素化について

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書誌事項

タイトル別名
  • The Study on the Chlorination of High Titanium Slag in Fluidized Bed
  • コウチタンシ ノ リュウドウ エンソカ ニ ツイテ

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抄録

One of the applications of the fluidized bed chlorination process is described. Using high titanium slag, the preferential chlorination of impurities (especially FeO) and the chlorination of major constituent-TiO2 were studied.<BR>In the preferential chlorination, to prevent the bed from sintering, the addition of charcoal powder was effective. As reducing agent, charcoal producer gas was recommended, and optimum conditions were as follows; temperature 750-850°C, particle size 65-200mesh, Cl2 concentration 10%, u=, 0.2, mean residence time 30miuntes, and under these conditions, the Fe removal was over 90% and that of the other impurities. was about 70%.<BR>After this treatment, the slag could be chlorinated in fluidized bed with CO-Cl2 gas mixture at 1, 000°C or hlgher. But in these conditions, the construction materials were damaged quickly, so we studied the lower temperature chlorination using solid C as reductant. In this method, samples were prepared from slag. and pretreated slag, finely ground, mixed with charcoal powder, agglomerated with syrup binder and sized 35-150mesh.<BR>These two samples were chlorinated easily in fluidized bed. The optimum conditions were temperature-650-750°C Cl2 concentration 50%, (diluted with CO2 or N2), and u=0.1, and under these conditions, the reactions was concluded in 15 minutes with 80% or better chlorination ratios.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 77 (872), 115-120, 1961

    一般社団法人 資源・素材学会

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