Screw Jacks for arduous anode environments.

PRLog (Press Release) – Apr 27, 2007 – Screw jacks are the tried and accepted method for the lowering and precise positioning of the anodes and anode beams in the vast majority of smelters. They are also used for “high jacking” of frozen pots.  The same method is used in both Søderberg smelters and Prebaked Anode smelters although jack styles and configurations vary depending on the technology employed. The screw jacks are mechanically linked and through a combination of gearboxes and electric or air motor drives, anodes are positioned via an electronic control system monitoring the potline efficiency.

Power Jacks expertise in screw jack design has produced this range of anode jacks which are proven as an ideal heavy duty design for arduous anode environments.

Features include

Upright or inverted screw designs are available
Translating or rotating screw design
The Jacks can accommodate large overload capacities to cope with side load stresses and frozen pot over loads
Extended protection pipe top and bottom
High temperature grease
Hexagonal drive ends
Double bearing arrangement for worm shaft
One piece forged rod end and lifting screw
High accuracy machined screw thread
The anode jacks are self-locking for safety
High temperature bright aluminium paint work
Available as single motorised jacks or as multiple units in a jacking system

Optional items:

Optional high temperature bellows boot protection for translating rod
Position feedback device
Wear monitor with or without feedback device
Preparation for the connection to an auto-lubrication system
Customised base mount and/or rod designs are available.

Three types of Anode Jack are available

ANODE JACKS – STANDARD TYPE
The standard models are available in 110kN (11 Te) and 150kN (15Te) capacities with other ratings up to 2000kN (200Te) available as special design.

ANODE JACKS – SWIVEL TYPE
Available in translating and rotating screw format the swivel anode jacks allow for up to 3º movement in the lifting screw or nut in any direction.

ANODE JACKS – PERFORMANCE
Working closely with the customer Power Jacks can supply special high performance screw jacks, which can improve the yield from Aluminum Smelters. For details consult Power Jacks.