HATCH

LOW RESISTANCE ANODE ASSEMBLIES

FOR ALUMINUM REDUCTION:

‘STUBHOLE ANCHORS’

Iron

Solidification

Gap

Carbon

Anode

Cast

Iron

Steel

Stub

Current

flow

Stubhole Anchors

Stubhole

groove

LOW RESISTANCE ANODE ASSEMBLIES FOR

ALUMINUM REDUCTION: ‘STUBHOLE ANCHORS’

The Cast Iron connection between steel stub and carbon anode shrinks

on solidification, leaving a ‘loose’ fit with significant electrical resistance

following initial anode setting.

Hatch Stubhole Anchors

are carbon steel nails

tightly driven into the

carbon, the exposed end

encased in the cast iron to

form a low electrical

resistance connection

between the iron and

anode carbon.

Stubhole Anchors reduce

stub to carbon

electrical resistance

Optional Stubhole Anchor configurations

Potential Benefits include:

• Lower power consumption and higher current capacity

• Lower stub temperature & stub damage/toe-in

• Reduce anode top surface temperature, reduced airburn and burnoffs

• Faster anode heatup and less magnetic disturbance after initial setting

Canadian patent 2838113, int’l patents pending.

Please contact Hatch to trial or license the patented Stubhole Anchor

Technology.

Will Berends

WBerends@Hatch.ca

Hatch Ltd.

2800 Speakman Dr.

Mississauga, ON,

Canada, L5K 2R7

www.Hatch.ca

Features:

• Flexible, automated robotic

installation to meet rod shop

cycle time

• Carbon steel anchors are

recycled/ remelted with cast

iron

• Robotic station locates

anywhere along anode

conveyor