キュポラ操業における使用コークスの大きさの影響

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書誌事項

タイトル別名
  • Effect of Coke Size on Cupola Operation
  • キュポラ ソウギョウ ニ オケル シヨウ コークス ノ オオキサ ノ エイキョウ

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抄録

  Using a midget cupola (I. D. 60 mm), the author investigated the effect of coke size on cupola operation. The gist of the result obtained are as follows : </br> (1) CO content in the effluent gases increases with the decrease of coke size. Owing to the increasing surface area of coke, the reaction between C and CO2 gases accelerates very much. </br> (2) At the beginning of operation, the size of bed coke has influence upon the composition of effluent gases. But the bed coke above tuyéres is burned out and gradually replaced by the charge coke, which seems to give an influence upon the gas composition thence-forth. </br> (3) From the view-point of the composition of effluent gases, melting rate should be theoretically increased with the decrease of the coke size. But practically, in case of too large or too small coke size. it is less than the theoretical case on a count of the unsmoothness of the operation. </br> (4) By the same reason, tapping temperature is also lowered in case of coke size is too large or too small. </br> (5) Greater blast pres ure is required with smaller coke size because of the higher resistance of air passage. </br> (6) Chemical composition and properties of molten iron are scarcely influenced by the size of coke, but are extremely influenced by the quality of coke and coke ratio. But proper size of coke must be selected for the effective operation.

収録刊行物

  • 鋳物

    鋳物 26 (7), 368-373, 1954

    公益社団法人 日本鋳造工学会

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