COMMINUTION TESTS AT GEOLABS
Geolabs boasts a fully equipped and dedicated comminution testing facility; services are described below. Geolabs is certified by JK Tech Pty Ltd to perform both JK Drop Weight and SMC tests.
JK Drop Weight Test
The JK DWT is an industry standard for use in characterising ore under AG/SAG milling conditions. The JK Drop Weight Test provides ore specific comminution parameters which are used in the JKSimMet software to analyse and/or predict crusher and AG/SAG mill performance. This allows for optimisation of current circuits or flowsheet design for new circuits.
Developed at UQ’s JKMRC in 1992, the JK Drop Weight Test is a single particle breakage test across 15 size/energy combinations.
Sample Requirements: 100kg -75mm+12.5mm
The SMC Test is a comminution test that provides a range of information on the breakage characteristics of ore. The SMC Test was developed by Dr. Steve Morrell as a cost-effective means of providing accurate data on the breakage characteristics of ore, which can then be used for a range of purposes including comminution circuit design and optimization, ore body profiling, geometallurgical modelling and Mine-to-Mill studies. The SMC Test is a great tool in variability studies where breakage parameters (A and b) need to be determined.
Sample Requirements: 20kg -32mm
Geopyörä Rock Breakage Test
Geopyörä is the latest advancement in rock breakage characterization testing. Its purpose is to provide mining companies with a cost-effective means to test multiple samples for a variety of applications related to geometallurgy, comminution design, and control. The test utilizes small, discrete samples obtained from either a full or halved one-meter section of drill cores, or less than a kilogram of crushed rocks. This makes it possible to integrate with geochemical assaying labs to better understand variability mapping, which is highly advantageous for geometallurgical applications. The data obtained through Geopyörä testing can be used to accurately estimate standard comminution parameters, as well as rock mechanical properties.
Sample Requirements: Full or halved one-meter section of drill cores
Bond Ball Work index
The Bond Ball Work Index Test determines the resistance of ore to grinding in a ball mill, expressed as a work index kilo Watt-hour per ton (kWh/t). The work index is then used to calculate the specific energy requirements for sizing ball mills or determining their throughput for a target grind.
Sample Requirements: 10kg -3.35mm
Bond Rod Work index
The Bond Rod Work Index Test determines the resistance of ore to grinding in a rod mill, expressed as a work index kilo Watt-hour per ton (kWh/t). The work index is then used to calculate the specific energy requirements for sizing rod mills or determining their throughput for a target grind.
Sample Requirements: 15kg -12.5mm
Bond Abrasion index
The Abrasion index test determines steel liner and steel media wear in crushers and mills (ball and rod). The index enables one to predict the wear rate of steel parts and thereby project the cost of wear over time, as well as to schedule maintenance to remedy such wear.
Sample Requirements: 2kg of -19mm+12.5mm
Bond Crushing Work index
The Crushing Work index uses Bond's Third Theory of Comminution to determine the power requirements when calculating the sizing of, and open-side setting for rock crushers; jaw, cone, and gyratory.
Sample Requirements: 20 particles in the range of -75mm+53mm