Lead Nitrate & Electrowinning cell - Pyrometallurgy: Roasting, Smelting, Refining & Calcining + Electrowinning - Metallurgist & Mineral Processing Engineer

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Lead Nitrate & Electrowinning cell (6 replies and 2 comments)

6 years ago

Teggry 6 years ago

Hi,

Why is Lead Nitrate put into the Electrowinning cell before the electrowinning starts. What is its purpose? The Met said it was just to make the operators job easier but did not need to be done.

Craig M

6 years ago

Craig M 6 years ago

I have not heard of putting lead nitrate in the EW circuit, and depending on how much was placed there, it might affect final done quality detrimentally.

Teggry

6 years ago

Teggry 6 years ago

I heard a bit more on that after I posted the query- It is supposed to 'coat' the cathode to help inhibit gold plating to the cathode. (stainless mesh cathode), but need confirmation on how true this is.

jtw@veritek.com

6 years ago

jtw@veritek.com 6 years ago

Doesn't sound right to me.

David

6 years ago

please do tell, what would sound right?

fletartelavoie

6 years ago

fletartelavoie 6 years ago

I was told to use lead nitrate to help remove “hard plated” gold from cathode. Anyone ever done that?

Teggry

6 years ago

Teggry 6 years ago

Well mate, that confirms what I was eventually told. Thanks.

fletartelavoie

6 years ago

I would still like to understand the reason why this would work, but we might give it a try.

CharMet

4 years ago

CharMet 4 years ago

We are conquering a plating issue with our gravity circuit EW and told about adding Lead Nitrate. However, this is the only place online I have found it mentioned. Does anyone have any sources for this information? Thanks.

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