Current Courses & Seminars
PROCESS IQ TECHNICAL SEMINAR
Optimising your Mining Operations
Venue: Fraser Suites, 10 Adelaide Terrace
Date: Friday 17 May 2019
Time: 8.00am – 4.00pm
Join us for a day of discussion around optimising minerals processing performance utilising real-time measurement & modelling and advanced process control. Find out how you can use the latest technology to improve your mineral processing plant.
- Orway IQ – Official Launch
- Mineral Process Optimisation
- Data Analytics, Techniques and Tools
- Advanced Process Control
- Cyanide and Carbon Measurement, Gold Leach Circuit Control
- Optimising Leach Performance: Gold Leach Kinetics
- Milling Optimisation
- Ultrasonic Density Measurement
To reserve your place, contact Paula Cairns on email email@example.com
IMPROVE LEACH PERFORMANCE WITH OXYGEN DEMAND TEST WORK
Availability: May 2019
To book: Contact Stuart Nuttall
Phone: 08 9240 4357
* FULLY BOOKED *
Typically, Gold leach performance in a CIP/CIL circuit is directly determined by the kinetics of the following equation:
4 Au + 8(NaCN) +O2 + 2 H2O = 4 NaAu(CN)2 + 4 NaOH
In cases where there is limited residence time, optimising the leach kinetics can have significant benefit to recovery.
The Reactivity Number (RN) is a characteristic of the ore type and is useful in determining the effectiveness of a pre-oxidation stage, or to assess the benefits (cyanide saving, improved kinetics) of possible future pre-oxidation.
- Characterization of feed ores (O2 & CN demands)
- Cyanide and oxygenation dosage systems – audit & specification
- Determination of optimal NaCN & DO ratios to maximize kinetics
- Dosage of reagents like peroxide and Pb-nitrate
Influence of grind size – specifically UFG
The “blue line”, as shown in the above figure, indicates a CIL circuit that has a low dissolved oxygen (DO) profile in the initial critical stages of the circuit. Ideally, in order to achieve the optimal NaCN / DO ration of 20, the objective is to target the red line. This will help maximise leach kinetics and improve recovery.
To discuss further, please email Stuart Nuttall on email firstname.lastname@example.org