Method and device for stirring zinc liquid and protecting smelting through inert gas

Abstract

The invention discloses a device for stirring zinc liquid and protecting smelting through inert gas. The device comprises a furnace body, wherein a furnace hearth is formed in the furnace body; a furnace wall is arranged on the inner wall of the furnace body; the device also comprises a gas through pipe which is connected to the furnace hearth; a gas inlet of the gas through pipe is externally connected with an inert gas source; a gas outlet of the gas through pipe is arranged at the bottom of the furnace hearth; a gas discharging hole is formed in the top of the furnace body. Through the adoption of the device for stirring zinc liquid and protecting smelting through inert gas, the inert gas is used for stirring metal zinc liquid in the furnace, thereby accelerating the heat conduction; meanwhile, the inert gas quickly expands under the heating action of the high-temperature metal zinc liquid, thereby exerting a certain magnification effect on the convection of the zinc liquid; the heat exchange is accelerated; the heat efficiency is improved; the inert gas is introduced from the bottom and floats up to the surface of the zinc liquid to form an inert gas protection layer, thereby exerting a good anti-oxidation effect. The invention also discloses a method for stirring zinc liquid and protecting smelting through inert gas.

Description

technical field [0001] The invention relates to the technical field of smelting, and more particularly, to a method for stirring zinc liquid with inert gas and protecting and smelting, and also relates to a device for stirring zinc liquid with inert gas and protecting and smelting. Background technique [0002] As the world's largest producer and consumer of metallic zinc, my country's production capacity has exceeded 7 million tons. The production method of metallic zinc is mainly wet method, that is, first through electrolysis, elemental zinc is precipitated onto the zinc plate, and then the formed zinc sheet is peeled off by a zinc stripper, which is called a zinc cathode sheet. [0003] As far as the melting of zinc cathodes is concerned, the device that uses inert gas to stir the zinc liquid and protect the smelting (the method of heating and melting by the induction body) is the most efficient method in the world. see figure 1 and figure 2 , figure 1 It is a schem...

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Problems solved by technology

[0007] In view of this, the first object of the present invention is to provide a device for stirring molten zinc with inert gas and protecting smelting, which can effectively solve the problem of low thermal efficiency and easy oxidation during metal zinc smelting, resulting in waste of resources and energy. question

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