Mechanical high-velocity comminution by VeRo Liberator® technique for efficient particle liberation and size reduction

Summary: The efficiency improvement in the comminution of ores has been on the international agenda of the mining industry for some time but substantial advances are still relatively scarce. It is generally agreed upon that major goals include a substantially reduced energy consumption, systems that operate dry, markedly enhanced particle size reduction, and improved particle liberation. The VeRo Liberator® was invented some five years ago and applies a completely new, mechanical comminution principle, which applies highvelocity, high-frequency impact comminution.

1 Introduction

The industrial scale 100 t/h VeRo Liberator® prototype features a vertical four-fold axle-in-axle system, equipped with a large number of hammer tools, which rotate on three levels clockwise and anticlockwise against each other. The resulting high-frequency, high-velocity impacts cause a highly turbulent particle flow and trigger fracture nucleation and fracture propagation preferentially at and along mineral boundaries. Breakage occurs from the high-velocity stimulation of particles, where the elasticity and compressibility modules control differential particle behaviour. This...

Related articles:

Issue 2018-04


Dear readers, The mining industry faces important challenge, as outlined in the report on “Global mining trends 2018". Although commodity prices are on the rise again, most markets are still facing...

Issue 2013-05

The European Symposium on Comminution & Classification ESCC 2013

The European Symposium on Comminution & Classification ESCC has a 51 year tradition. From 09.-12.09. 2013 Braunschweig, or in English “Brunswick”, will host this international conference of the...

Issue 2014-12 ESCC 2015

Call for abstracts is now open

It is with great pleasure that Chalmers University of Technology invites all interested to the European Symposium on Comminution and Classification on the 7-10 September 2015 in Gothenburg/Sweden....

Issue 2010-10

CDF based modelling of bubble-particle collision efficiency with mobile bubble surface in a turbulent environment

This paper describes how to use a numerical simulation with a Lagrangian particle tracking model to calculate bubble-particle collision efficiency in a turbulent environment. First the bubble-particle...

Issue 2010-03

Pressure shock resistant and flame-proof

The solids rotary vane gate, type SRVP (Fig.), has been ­substantially further developed by S.S.T. Schüttguttechnik. The dimensioning and configuration of the rotor, have been designed in such a way...