| 摘要 |
The molten metal is bringing into the additive with which the chamber, arranged inside the tank and equipped with the openings, is filled. The tank is keeping in the vertical position during a certain time (t) formulated in the seconds and calculated by the formula t = 68 x T (exp 0,22) x A, wherein 68 means a coefficient, T means a molten metal weight expressed in tons and A means an evaporation degree coefficient of the used additive. When magnesium is used as the additive, the coefficient A is equal 0,5 to 1,5. When calcium is used as the additive, the coefficient A is equal 0,7 to 1,2 and when lithium is used as the additive, the coefficient A is equal 0,4 to 1,1.
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