![\"Rotary](\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2020\/10\/Rotary-Blow-Method.jpg\")
<\/p>\nIn order to overcome the shortcomings of the single-pipe blowing method, such as the small area of \u200b\u200baction and the difficulty of controlling the bubble size, a rotary blow method with a porous blowing head was developed. The structure of the blowing head can be varied, but the purpose is only one, that is, to uniformly form a large number of small bubbles in the melt.<\/p>\n
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The rotary blow method using shearing action, its structure is composed of static and moving plates. The inert gas flows downwards from the upper part, changing the direction between the stationary plate and the moving plate to flow radially. Due to its sucking action, the melt flows downward and upward from the upper and lower tooth grooves of the blowing head, and the two meet between the static plate and the moving plate. Under the action of shear force, a relatively uniform gas-liquid flow is formed, and a large number of uniform and fine bubbles are formed when the gas-liquid leaves the blowing head. These bubbles move in the radial direction, and then move upward to escape. At the same time, the melt also moves in circulation.<\/p>\n