Molten steel decarburization degassing refining method and molten steel decarburization degassing refining device

The invention provides a molten steel decarburization and degassing refining method and device.The device comprises a vacuum device, a supporting structure and a gas supply device, a containing cavity is formed in the vacuum device, a vacuum environment is formed in the containing cavity, a bearing steel ladle is placed in the containing cavity, and the supporting structure is installed at the top of the vacuum device; the steel ladle is placed on the supporting structure, a connecting mechanism is installed on the vacuum device, the bottom of the steel ladle is communicated with the interior of the containing cavity through the connecting mechanism, molten steel in the steel ladle flows into the receiving steel ladle through the connecting mechanism, and the gas supply device is communicated with the interior of the connecting mechanism and used for generating gas flow. And the molten steel flow in the connecting mechanism is impacted. The device is simple in structure and low in investment; operation is eas