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    • 2. 发明授权
    • Method of stirring molten metal and refractory cylinder for the purpose
    • 用于搅拌熔融金属和耐火材料缸的方法
    • US4452634A
    • 1984-06-05
    • US437514
    • 1982-10-29
    • Yukio OguchiNorio SumidaTetsuya FujiiToshihiko EmiToshio FujimuraArata Ueda
    • Yukio OguchiNorio SumidaTetsuya FujiiToshihiko EmiToshio FujimuraArata Ueda
    • B01F5/10B01F11/00C21C7/00C21C7/10C22B9/02C22B21/00F27D27/00C22B9/00
    • F27D27/00B01F11/0071B01F11/0074B01F5/10C21C7/0037C21C7/10C22B21/0084C22B9/02F27D27/007Y02P10/234
    • A method of stirring molten metal by repeatedly sucking and rapidly discharging part of the molten metal into and out of a refractory cylinder having a lower opening end immersed in the molten metal in a ladle, comprises operating the stirring under a condition that an inner diameter (d) of the refractory cylinder is less than 1,000 mm, a relation between the inner diameter (d, mm) of the refractory cylinder and weight (W, ton) of the molten metal in the ladle is d/W.sup.0.5 >30, and an immersed depth of the refractory cylinder is within 200-700 mm. A pressurized gas for discharging the sucked molten metal out of the cylinder is introduced thereinto in an inclined direction relative to a vertical line against a point on an opposite inner wall of the cylinder at least 500 mm above the maximum suction level of the molten metal in the cylinder.A refractory cylinder operated in the above manner according to the invention comprises a flange connection between an uppermost and an intermediate cylinder parts of the cylinder at a location higher than the maximum suction height of the molten metal and a further flange connection between the intermediate cylinder part and a lowermost cylinder part. The refractory cylinder comprises at its immersed end a flow restricting opening to obtain more strong stirring the molten metal.
    • 通过将熔融金属的一部分反复吸入并快速排出浸入熔融金属中的较低开口端的耐火圆筒放入钢包中来搅拌熔融金属的方法包括在内径( 耐火材料圆筒的d)小于1000mm,钢包中熔融金属的重量(W,ton)之间的关系为d / W0.5> 30, 耐火材料缸的浸入深度在200-700mm之内。 用于将吸出的熔融金属从气缸中排出的加压气体相对于垂直线倾斜的方向被引入到相对于气缸的相对的内壁上的点上方的熔融金属的最大吸入水平以上至少500mm 气瓶。 按照本发明以上述方式操作的耐火材料圆筒包括在高于熔融金属的最大吸入高度的位置处的气缸的最上部和中间气缸部分之间的凸缘连接,以及中间气缸部分 和最下面的气缸部分。 耐火材料缸在其浸入端包括流动限制开口以获得更强烈的搅拌熔融金属。