Mill Liner Solutions

Vortex Discharge End

Overview

The Vortex improves product movement and decreases the time to exit the discharge cone, reducing pulp lifter wear and improving pulp discharge from the mill.

Bradken Vortex® Discharge End has been developed to encourage early discharge of coarse product that travels down the pulp lifters during each revolution. The Vortex® improves product movement and decreases the time to exit the discharge cone, reducing pulp lifter wear and improving pulp discharge from the mill.

The Vortex® Discharge End has been developed to encourage early discharge of coarse product that travels down the pulp lifters during each revolution of the mill. Vortex® is proven to improve product movement and decreases the time to exit the discharge cone, reducing pulp lifter wear.

Bradken Vortex® Discharge Ends are designed to improve uni-directional AG/SAG mill performance. Each design is customised to suit your mill size, application and operating conditions. The Vortex® design can be fully retrofitted into an existing mill or supplied for new mills.

The Bradken Vortex® Discharge System:

Provides superior discharge performance for SAG and AG mills
Is ideally suited to high throughput, high solids discharge mills
Increases ore throughputs
Increases pulp lifter wear life

Our one-piece Super Vortex® Grates cover the full depth of the charge to maximize grate open area and mill throughput exposure

Discharge grate slot analysis is carried across all grate designs to optimize open area, recycle size and product passing

Large One-piece Super Vortex® curved pulp lifters generate maximum flow dynamics during discharge of ore & slurry

Benefits of an optimised discharge end

The Bradken Vortex® Discharge End has been developed to encourage early discharge of coarse product that travels down the pulp lifters during each revolution.

The geometry of the Bradken Vortex® Discharge End not only improves pulp chamber efficiency by eliminating pulp back-flow but that efficiency is not compromised by the higher mill speeds required to maintain trajectories and breakage conditions inside the mill as shell liners wear.

The Bradken Vortex® Discharge End can be supplied for new mills as well as being retrofitted to mills that have originally been drilled to accommodate a radial design pulp lifter arrangement. Each design is customised to suit your mill size, application and operating conditions.

The Discharge End (DE) pulp lifter is a critical component of autogenous (AG) and semi-autogenous (SAG) grinding mills, having a significant impact on the throughput, efficiency and performance of mills. Underestimating the importance of an optimised liner design in a mill can lead to back-flow and carry-over processes which can ultimately result in high wear, poor liner life and reduced mill throughput.

Installing a Bradken Vortex ® Discharge End and optimised liner design can lead to significant improvements in mill performance including:

• increased hourly mill throughput

• increased average mill throughput (fresh feed)

• increased average re-cycle load