JKTech Laboratory
Services
Delivering innovations to the global resources
industry through testing ore characteristics
and plant performance parameters.
JKTech Pty Ltd
www.jktech.com.au
JKTech’s Laboratory Services group specialises in providing quality testing
laboratory and medium scale
equipment is available. Many types of tests can be conducted by our experienced staff which can be
complimented by our consulting services in the areas of geometallurgical, mining, comminution
and flotation.
of rock properties and plant performance parameters. A broad range of
COMMINUTION TESTING
Comminution Testing involves testing the breakage characteristics of a sample of rock, in order to determine
the energy needed to crush and or grind that particular rock to a desired size in a particular comminution
device. JKTech offers a number of tests in the area of comminution described below.
JK Drop Weight Test (JKDWT) is the industry
standard for characterising an ore under AG/SAG
milling or crushing conditions. The test provides ore
specific parameters which are used in the JKSimMet
Mineral Processing Simulator software. The software
analyses and predicts AG/SAG mill performance. The
same test also provides ore type characterisation for
the JKSimMet crusher model.
High Pressure Grinding Rolls (HPGR) are
increasingly becoming a part of hard rock processing
due to their energy efficiency, ability to induce microcracks and preferential liberation, coupled with
high throughput and high reduction. The HPGR
test provides ore specific parameters that are used
in conjunction with lab scale machine parameters
in JKSimMet to scale up performance to full scale
machines.
SMC Test® provides a cost-effective means of
profiling an ore body to predict its comminution circuit
throughput, rock mass characteristics and blasting
properties. The test can be used in greenfield,
brownfield and established operations, and
determines the Drop Weight Index of a sample.
Bond Rod Mill Work Index Test (BRMWI) is a
standard test for determining the Rod Mill Work Index
of a sample of ore. The BRMWI is a measure of
the resistance of the material to grinding. It can be
used to determine the grinding power required for a
given throughput of material under rod mill grinding
conditions.
JK Rotary Breakage Test (JKRBT) offers industry
a rapid method for determining accurate and reliable
impact breakage characterisation data for plant
design and optimisation. The breakage parameters
are used in the JKSimMet Mineral Processing
Simulator software to analyse and predict AG/SAG
mill performance. Lite (JKRBT-Lite) and Express
(JKRBT ‘AB Express’) versions of this test are also
available for spatial domaining purposes.
Steel Wheel Abrasion Testing (SWAT) uniquely
tests the quantitative characterisation of steel media
wear in SAG and Ball mills.
Bond Ball Mill Work Index Test (BBMWI) is a
standard test for determining the Ball Mill Work Index
of a sample of ore. The BBMWI is a measure of the
resistance of the material to crushing and grinding. It
can be used to determine the grinding power required
for a given throughput for material under ball mill
grinding conditions.
The ISAMill Test is performed in a horizontal high
intensity stirred mill. The ISAMill Test generates data
which can be used to determine the effectiveness of
an ISAMill in a particular application and to enable
process design.
FLOTATION TESTING
Flotation Testing involves batch float testing to customer specific test conditions. Outcomes from such a test include
the determination of parameters for flotation modelling, optimisation of flotation conditions, ranking evaluation of
flotation responses of different parts of the ore body, assisting in process selection for Greenfield projects and
evaluation of flotation chemicals.
Process and Reagent Evaluation testing for
existing or new flotation circuits can be performed.
JKTech has developed a number of laboratory
equipment and techniques, specifically relating to
bubble size and frother analysis, with equipment
calibrated under standard conditions to ensure high
reproducibility. Laboratory-scale batch tests can
evaluate plant operation for the individual cell or bank
(Roughers, Scavengers and Cleaners) performance
by conducting a quick batch flotation test. Results can
be used to optimise the flotation performance for that
individual cell or bank. These tests can also estimate
the recycled process water performance in the plant.
Reagent evaluation testing is also a laboratory-scale
batch test, undertaken to assist the plant operations
with reagent optimisation. These tests can be used
to evaluate flotation process performance using
new reagents for an existing or new orebody. In
essence, reagent evaluation can be used to identify
the appropriate reagent and consumption rate.
Locked Cycle Testing is undertaken at a laboratory
scale in order to simulate a continuous flotation
operation. JKTech has adopted the Locked Cycle test
with success and has used the methodology to validate
JKSimFloat simulations under laboratory conditions.
JK Floatability Index (JKFI) Test makes use of
the latest laboratory batch flotation test technology,
performing tests and varying bubble surface area flux
to derive a floatability index and produce a number of
key model parameters from rock samples. The index
and parameters are used to predict plant metallurgical
performance of flotation circuits before there is a
change in plant feed. JKSimFloat, in conjunction
with the JKFi Test, provides a very powerful tool
for minimising the risk of falling concentrate grades
or increased losses of valuable metals to tails.
CLASSIFICATION AND OTHER SERVICES
Sizing Measurement such as sieving and laser
sizing can be performed at JKTech. Sizing analyses
provide useful information on the size distribution
of a sample of ore or other material. They may be
required for many reasons, including: to understand
how a mill or other unit operation is working, to work
out physical or chemical properties of the sample, in
design of new equipment or optimisation of an existing
facility. JKTech can provide assistance with sample
collection, preparation of representative subsamples
and analysis of results.
Hydrocyclone Tests can be carried out by JKTech
for cyclone characterisation, for benchmarking or to
produce JKSimMet model parameters for mineral
processing circuit simulation.
Consulting Support can be provided to compliment
our laboratory testing services in the areas of
geometallurgical, mining, comminution and flotation. A
wide range of reporting requirements can be specified
by the customer from the delivery of the raw results
and interpretation to a full analysis of the results.
Flotation
Comminution
TESTING SERVICES
Test
Application
Breakage
Mechanism
Outputs
Sample Requirements
Bond Abrasion
Wear Prediction
Abrasion
Ai
3 kg of -19+12.7 mm particles required for test.
Recommend 10 kg of fragmented ore or drill core.
BBMWi
Mill Models
Grinding
BBMWi
10 kg of -3.35 mm particles. Recommended 15kg.
BBMWi - Lite
Mill Models
Grinding
Est. BBMWi
6 kg of -3.35 mm particles.
BRMWi
Mill Models
Grinding
BRMWi
15 kg of -12.5 mm particles.
JKDWT
Mill Models
Impact
A, b, A*b
100 kg of -63+13.2mm particles (preferably unsorted
and unselected).
EquoTip+
Response Variability
Hardness
Leeb
Hardness
Full, half or quarter core with smooth surface. Test
cannot be completed on broken rock. 10 repeats are
completed per sample.
GeM Ci+
Response Variability
Crushing
CICru, CIGrd
Full, half or quarter core or naturally fragmented rock
can be used. Recommend 5 kg be supplied.
HPGR - Type A
HPGR Model
Crushing
Energy
Saturation Point,
Model Inputs
150 kg of -9.5 mm particles.
HPGR - Type B
Variability
Crushing
Model Inputs
25 kg of -9.5 mm particles recommended.
ISAMill
Mill Models
Crushing
Signature plot
15 kg of -1 mm particles.
Point load test
Mill Models
Impact
PLI
20 core or rock specimens with aspect ratio of 5:2.
Dimensions must be less than 75mm.
JKRBT
Mill Models/SAG Mill
Impact
A, b, A*b
100 kg of -45+13.2mm particles (preferably unsorted
and unselected).
JKRBT 'AB
express'+
Spatial Domaining
Impact
AB Express
3 kg of -31.5+9.5 mm particles (preferably unsorted
and unselected). Test can be done on smaller size
fractions if insufficient sample available ~1 kg.
Recommend 30 kg fragmented ore or drill core be
supplied.
JKRBT - Lite+
Spatial Domaining/
Mill Sizing
Impact
Equivalent
A, b, A*b
1 kg of -11.2+9.5 mm particles (preferably unsorted
and unselected). Recommend 15 kg fragmented ore or
drill core be supplied.
JKRBTWi
Spatial Domaining
Impact
Est. BMWi
3 kg of -31.5+9.5 mm particles (preferably unsorted
and unselected). Test can be done on smaller size
fractions if insufficient sample available ~1 kg.
Recommend 30 kg fragmented ore or drill core be
supplied.
SMC
Domaining, Mill
Sizing
Impact
Mia, Mib, Mic, A,
b, A*b
30 kg of -31.5+13.2 mm particles (preferably unsorted
and unselected).
SWAT
Wear Prediction
Abrasion
mpredicted
3-4 kg of -850+300mm for every media/ore
combination.
Unconfined
Compressive
Strength
Crusher Design
Impact
UCS
Specimens minimum 85mm full core with L>2.5 dia.
Test
Application
Outputs
Sample Requirements
Batch Test
Optimisation
Recovery and Grade
1100g of -3.35 mm particles required for test.
JKFi
Modelling/
Benchmarking/
Ore characterisation
Ore floatability parameters for
modelling
5 kg of -3.35 mm particles required for test.
Locked Cycle
Optimisation
Grade v Recovery information
10 kg of -3.35 mm particles required for test.
Reagent
Evaluation
Optimisation
Recovery
2 kg per reagent.
+Only available to GeM sponsors
FURTHER INFORMATION
Dominic Stoll
Manager - Metallurgical Solutions
E: [email protected]
T: +61 7 3346 5883
40 Isles Rd, Indooroopilly, Brisbane QLD 4068 AUSTRALIA
Telephone: +61 7 3365 5842 Facsimile: +61 7 3365 5900
Email: [email protected] Website: www.jktech.com.au