Feeding device and method for methanesulfonic acid electrotinning liquid additive

Abstract

The invention discloses a feeding device and method for a methanesulfonic acid electrotinning liquid additive. The feeding device and method for the methanesulfonic acid electrotinning liquid additive mainly solve the technical problem that an existing electrotinning liquid additive cannot be rapidly and evenly mixed in electrotinning liquid. The feeding device for the methanesulfonic acid electrotinning liquid additive comprises an electrotinning liquid self-circulation system and an additive feeding system, the electrotinning liquid self-circulation system comprises an electrotinning liquid circulation tank, an electrotinning liquid self-circulation pump and a vacuum jet pump, and the electrotinning liquid circulation tank is connected with the solution inlet of the electrotinning liquid self-circulation pump through a first electrotinning liquid self-circulation pipeline; the liquid outlet of the vacuum jet pump is connected with the electrotinning liquid circulation tank through a third electrotinning liquid circulation pipeline; the additive feeding system comprises an additive storage tank, an automatic flow control valve and a metering pump, the metering pump is mounted on a first additive feeding branch pipe, the automatic flow control valve is mounted on the second additive feeding branch pipe, and the mixing chamber of the vacuum jet pump communicates with an additive feeding outlet header pipe. According to the feeding device for the methanesulfonic acid electrotinning liquid additive, the electrotinning liquid additive can be quickly and uniformly mixed in the electrotinning liquid.

Description

technical field [0001] The invention relates to a feeding device for an additive in an electrotin plating solution, in particular to a feeding device and method for an additive in a methanesulfonic acid electrotin plating solution, and belongs to the technical field of tin solution control technology and equipment for cold-rolled tin-plated steel sheets. Background technique [0002] In the electro-tin plating system for continuous high-speed electro-tin plate production, methanesulfonic acid (MSA) electro-tin plating system is relative to phenol sulfonic acid system (PSA) electro-tin plating system. The environmentally friendly electro-tin plating technology that has emerged in recent years has been used abroad achieve wider application. In China, Meishan Steel, Shougang, Shagang, and Zhongyue Electric have tin-plating units using this technology. The composition of MSA plating solution includes divalent tin ions, methanesulfonic acid, additives, and antioxidants. Among th...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of feeding device and method for the additive of methanesulfonic acid electroplating tin plating solution, mainly solve the technical problem that the existing plating solution additive cannot be mixed quickly in the electroplating solution, the present invention realizes the The solution additives are quickly and fully mixed in the electroplating solution, which reduces the quality of cold-rolled tin-plated steel sheets caused by fluctuations in the concentration of tin-plating solution additives during production.

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