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Zinc Dust treatment of plating solution

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Q. Hi and Aloha,
I'm looking to give Zinc Dust to my Alkaline Zinc alloy solution, I've confirmed that I got iron deposited on my parts when the power supply if turned off.

Can you help me with the steps to perform the zinc dust treatment?

Rodrigo Ornelas
- Nogales, Mexico
June 29, 2023

⇩ Closely related postings, oldest first ⇩

Q. Why do they give zinc dust [on eBay or Amazon affil link] treatment and carbon treatment to electroplating tanks?
How to add brightener or booster in electroplating tank? Do I have to dilute the brightener or booster before I add it to the tank?

Rajarajan Sundaresan
quality - irunkattukottai, Tamilnadu, India
June 15, 2009

simultaneous replies

A. zinc dust is usually for treating/eliminating metal impurities such as Pb, Cu which came from the zinc anode, or the caustic soda [affil link] , water, or bus bar used in plating tank.

zinc dust is added to the filter which is precoated with filter aid. Filter then should immediately be cleaned after 4 hour max. treatment.

Usually brightener or booster can be added directly to the tank, but you should check if the brightener is coagulated in small quantity.

Joko Prasetyo Yuniartanto
- Bekasi, West Java, Indonesia

A. Suppose plating bath is contaminated with metallic impurities, then we give zinc dust treatment.

Brightener and additives are the organic derivatives to give good brightness and coverage. Diluting carrier and brightener before adding to the bath gives good results.

- Chennai, Tamilnadu, India

Dear RS,

zinc dust is used for reducing the metallic impurities(inorganic) in the plating bath

Carbon is used for removing organic impurities mostly oils, and break down products of additives.

There is not any recommendations to add brighteners in dilute form, but make sure the bath well mixed after dosing.


S.V. Aurobind
plating process supplier - Bangalore, India
July 13, 2009

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