Lead (Pb) alloy rolled Anode for nonferrous electrowinning

Pb (Lead) Alloy Rolled Anode 1.High strength & conductivity 2.Corrrsion resistance 3.Long service lifetime 4.Low price

Pb (Lead) alloy rolled anode is widely used in Zinc, Copper, Nickel, Cobalt and Manganese EW industry for its high strength, high conductivity, high corrosion resistance, long service lifetime, low production cost and good machining property.

In 1998, UNIONSUM INTERNATIONAL INDUSTRIAL CO,. LTD established its Pb (Lead) anode manufacture to produce Pb (Lead) alloy rolled anode that is used for non-ferrous metal EW. Our products are cordially welcomed by the market and win great reputation since its inauguration and have been exported to many countries from 2000. After 10 years' development, UNIONSUM provides its clients with below complete series of anodes for non-ferrous metal electrowinning.

Products	Anode Alloy Chemical Composition (%)
Anode for Zn/Ni/Cd EW	Binary Alloy: Pb 99% -Ag1%
	Pb-Ag-Ca Alloy: Pb99.50%-Ag0.2%-Ca0.08%-Rare Earth0.2%
	Multi-Alloy: Pb-Ag 0.2%-(Ca+Sr)0.08~0.12%
Anode for Cu-EW	Binary Alloy: Pb93.9%-Sb6.0%
	Pb-Ca-Sn Alloy: Pb-Sn1.5%-Ca0.08%
Anode for Co-EW	Pb-Ag0.2%-Sn0.2%-Ca0.08%
Anode for Mn-EW	Binary Alloy: Pb, Ag
	Trinary Alloy: Pb, Ag, Sn
	Multi-Alloy: Pb, Ag, Sn, Sb

In the field of Copper Electrowinning, Pb-Sn1.5%-Ca0.08% anode is the most proper one. Bellow is the alloy’s performance during electrowinning process.

Element	Efforts
Tin	(1)Imparts Strength to the Lead Alloy and Reduces Creep; (2)Reduces Corrosion by Segregation into Interdentritic Eutectic Phase Forming Layers of Tin-Rich Material; Parallel to Surface for Rolled Anodes; (3) Improves Conductivity and Reduces Anode Polarization; (4)Prevents Formation of Tetragonal PbO; (5)Produces Conducting Paths through Corrosion Layer
Calcium	(1)Increases Rate of Anode Corrosion—Particularly above 0.08% Ca because of Pb3Ca formation; (2)Increases Mechanical Properties of Anode; (3)Decreases the Anode Potential;
Aluminum	(1)Anti-Drossing Agent (2)Grain refiner

  

 

At present, our process flow to produce Pb-Sn-Ca anode is show in the below:

CONCLUSION: With the best chemical composition control and advanced manufacturing process, UNIONSUM anode has shown the below characters and advantages which are acknowledged by our clients

1) High Mechanical Strength against Warpage and Creep (Form Stability)

2) Low Oxygen Overpotential for Oxygen Evolution

3) Quick and Stable Formation of Hard, Dense and Adherent Protective Corrosion Layer(Conditioning)

4) High Corrosion Resistance

5) Long Service Life

6) Minimized Production Cost

The manufacturing facilities:

     

                            Packages

                Application

Lead (Pb) alloy rolled Anode for nonferrous electrowinning