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Mixed Metal Oxide Anode

Description:

Mixed metal oxide anodes (MMO anodes) are anodes made by titanium coated with mixed metal oxide. It is a crystalline electrically-conductive coating that activates the titanium and enables it to function as an anode. CORROCO International Industrial Co., Ltd provides high-performance mixed metal oxides (MMO anodes) for clients, which can be applied to electrosynthesis, chlorate and perchlorate production, electro-chlorination, electroplating, cathodic protection, sewage treatment of substrate, and so on.

Advantage:

1. This impressed current anode is of light weight.
2. MMO coatings have high chemical stability even in environments with very low PH values.
3. The coating of mixed metal oxide anodes is not affected by chlorine.
4. The wear rate of the MMO anode is extremely low and uniform. It is between 1 and 6 milligrams/ampere per year.
5. The anode dimensions remain nearly constant.
6. The mixed metal oxide can be operated at high current density, such as 2000A/m2.
7. It has superior electrically-conductive performance (10-7Ω·m)

Application

MMO coated anode rods have an extremely low consumption rate , they are widely used for cathodic protection in soil, sea, mud, sewage and fresh water environments. Such as Process vessels, Water condenser boxes, Heat exchangers, Water intake structures, Groundbed applications, etc.

Composition of MMO Anode:

We provide two coating systems for different environment: Ir-Ta system, Ir-Ru system.

Type

Coating composition

Application

1

IrO2-RuO2-TiO2-X

Suitable for use in sea water where Cl2 is the principal anode product.

2

IrO2-TaO5-X

Suitable for use in soil, backfill, fresh water and sea water where O2, Cl2 or a combination of both are discharged at the anode.

3

Pt/Ti,Nb,Ta

Suitable for use in sea water

Specification:

Electrolyte

Maximum Design Current Density

Anode Life

Carbonaceous backfill

50 A/m2

20 years

Calcined petroleum coke

100 A/m2

20 years

Fresh water

100 A/m2

20 years

Brackish water

100~300 A/m2

20 years

Sea water

600 A/m2

20 years

Parameters:

Anode for Cathodic Protection

Ti Anode

Ti standard

Type/Spec

Output Current

Life(Year)

Fiber(Silk)

Ф1.5

328 mA/m

20

Ф3.0

656 mA/m

20

Ribbon

ASTM265

6.35x0.635

17 mA/m

50

12.7x0.635

34 mA/m

50

Rod

Ф3.2

1.7 A/m

20

Ф6.4

3.5 A/m

20

Ф12.7

6.9 A/m

20

Ф19

10.6 A/m

20

Ф25

13.9 A/m

20

Netting

ASTM265

32x1220x1

5A

20

20x1000x1

2A

20

Tube

ASTM B338

Ф19x1200x1

7A

20

Ф25x5000x1

4A

20

Ф25x1000x1

8A

20

Ф31x1200x2

12A

20

Packing:

Wooden boxes,suitable for forker and sea freight.

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