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Comprehensive plating promoter treatment process and apparatus for hot galvanizing production line

A comprehensive treatment and plating flux technology, applied in hot-dip plating process, coatings, instruments, etc., can solve the problems of many tanks, not compact structure, large footprint, etc., achieve simple and compact structure of the device, and save raw materials , The effect of reducing production waste

Inactive Publication Date: 2007-06-06
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although this device can purify and regenerate the plating flux solution, there are two disadvantages: (1) although the reaction of ammonia and hydrochloric acid can generate ammonium chloride, it can only supplement the consumption of a part of ammonium chloride
To maintain the ratio of zinc chloride and ammonium chloride in the fluxing solution, additional ammonium chloride needs to be added; (2) the whole set of equipment has many tanks, occupies a large area, and is not compact enough

Method used

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  • Comprehensive plating promoter treatment process and apparatus for hot galvanizing production line

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] In Fig. 1: 1. Plating flux tank, 2. Dezincification tank, 3. Galvanized dust tank, 4. Treatment tank, 5. Ammonia water tank, 6. Inclined plate precipitator, 7. Plate and frame filter press, 8 , 15, 16, 18, 19. Valve, 9, 20. Pump, 10, 17. Metering pump, 11. Fan, 12. pH automatic measurement and control system, 13. Ring air duct, 14. Air compressor, 21. Dry mud.

[0030]In Fig. 1, the plating flux tank 1, valve 8, and pump 9 are connected with the treatment tank 4 through pipelines, and when the valve 8 was opened, the plating flux can be continuously pumped into the process tank 4; dezincification tank 2, valve 15, Metering pump 10 is connected with treatment tank 4 through pipeline, and when valve 15 is opened, the dezincification solution containing zinc chloride can be metered and flowed in treatment tank 4 as required; The treatment...

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Abstract

The present invention discloses comprehensive plating promoter treatment process and apparatus for hot galvanizing production line. The plating promoter in hot galvanizing production line is purified automatically and has its plating promoting components replenished with the waste from the hot galvanizing production process. The comprehensive plating promoter treatment process includes continuously pumping the solution from the plating promoting tank into the treating pot, pumping the solution from the dezincing tank and the smoke dust pot with a metering pump to the treating pot simultaneously, adding ammonia water under the control of a pH metering and controlling system, blasting air to oxidize the bivalent iron in the solution into trivalent iron with the oxygen in the air to form ferric hydroxide precipitate, separating in the sloping plate precipitator, eliminating the precipitate in a press filter, and returning the clear solution to the plating promoting tank.

Description

technical field [0001] The present invention relates to the processing method and the equipment of the auxiliary plating solution during batch hot-dip galvanizing production, more specifically, is to utilize the waste material (the zinc chloride and the zinc chloride and the zinc plating produced after the dezincification of the pendant and the back-plated part) to produce in the hot-dip galvanizing process. The flue dust mainly containing ammonium chloride absorbed during zinc) is automatically produced to supplement the components of the plating flux solution, and the process method and equipment for automatically purifying the plating flux solution. Background technique [0002] The hot-dip galvanizing process requires that the workpiece must be galvanized before galvanizing, that is, the workpiece after degreasing and derusting is immersed in a zinc chloride and ammonium chloride fluxing solution to cover a layer of zinc ammonium chloride on the surface of the workpiece ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/02G05D21/00
Inventor 孔纲卢锦堂车淳山许乔瑜
Owner SOUTH CHINA UNIV OF TECH
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