Composite purification device for continuously removing zinc slag in heat zinc coating liquid

A composite purification, hot-dip galvanizing technology, applied in hot-dip plating process, process efficiency improvement, coating and other directions, can solve the problems of increasing the cost of hot-dip galvanizing, insufficient purification efficiency and effect of zinc pot, waste of resources, etc. The effect of reducing slag defects, reducing zinc consumption, and reducing zinc slag

CN101104917AInactive Publication Date: 2008-01-16SHANGHAI JIAO TONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2008-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

A combined purification apparatus is provided for continuously removing zinc dross from molten zinc in hot dip galvanization, which belongs to the field of metal smelting technique. The apparatus comprises a molten zinc delivery device, a first-step filter, and a second-step electromagnetic deslagging device. The molten zinc delivery device comprises a molten zinc pump and a molten zinc flow channel. The first-step filter is a ceramic foam filter. A zinc pumping pipe of the molten zinc pump is immersed into a zinc pot. The ceramic foam filter is arranged inside the molten zinc flow channel. The second-step electromagnetic deslagging device is arranged in the middle inside the molten zinc flow channel, and comprises an induction coil, a porous ceramic pipe, a heat-insulating jacket, and a fire-resisting shell, wherein the porous ceramic pipe is arranged inside the induction coil; the heat-insulating jacket is used to isolate the induction coil from the porous ceramic pipe; the induction coil, heat-insulating jacket and porous ceramic pipe are all arranged inside the fire-resisting shell. The invention can efficiently remove zinc dross from molten zinc in hot dip galvanization at the early formation stage, and helps to reduce the zinc slag defect of steel work piece in hot dip galvanization and improve the surface quality.
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Description

technical field

[0001] The invention relates to a device in the technical field of metal smelting, in particular to a composite purification device for continuously removing zinc dross in a hot-dip galvanizing bath. Background technique

[0002] Corrosion is an important way of material loss, and the loss of steel materials due to corrosion reaches tens of millions of tons every year. Steel materials used in bridges, construction, construction machinery, shipbuilding and other fields have special requirements for corrosion resistance. Hot-dip galvanizing can effectively improve the corrosion resistance of steel, so it is widely used in electric power, transportation, automobile, construction, chemical and other industries. Hot-dip galvanized steel requires high surface quality, otherwise it will directly affect the performance and service life of subsequent processing workpieces.

[0003] The zinc slag produced during the hot-dip plating of the steel plate in the zinc pot ...

Examples

Embodiment Construction

[0012] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0013] As shown in Fig. 1, this embodiment includes: a liquid zinc conveying device, a primary filter and a secondary electromagnetic slag removal device. The liquid zinc conveying device includes a liquid zinc pump 6 and a liquid zinc launder 1 . The primary filter is a ceramic foam filter 2. The secondary electromagnetic slag removal device includes an induction coil 3 , a heat insulation sleeve 4 , a porous ceramic tube 5 and a refractory shell 7 . The zinc liquid pump 6 is placed above the zinc pot, the zinc pump 6 pumps the zinc pipe and is immersed in the zinc pot, the foam...