mining
21 Issue 4 2020
Simplify metal mining with titration T
itration (titrimetric analysis) is a quantitative analytical method, which accompanies the entire chain of the metal mining process in order to improve the leaching process or minimise chemical consumption in purification. Determination of metal content, moisture, chemicals or reagents is necessary for different mining stages. Titration has proven to be a robust and rather simple analytical technique that can be used at nearly any point in the process and is now automated to a large extent, from earliest sample preparation through to data storage. Using Mettler Toledo’s Excellence line of automated titrators, metal leaching and concentration analysis via titration is made safe and easy. Features and modular additions such as SmartSample reader, sample changers, burettes and LabX software, offer the ideal solution for titrimetric analysis. Only One Click on the titrator’s touch screen is required to run a titration analysis for metals. The easy operation of these robust and qualified analytical instruments, as well as affordable cost, allow the use of titrators at all mining sites and in small testing labs. The main advantages of titrimetric methods such as linearity and high precision will benefit the user. Typical precision of titrimetric analyses is around 0.5%. In the case of pure silver, the relative
standard deviation can be as precise as 0.05%. With a large database of standard titration methods for metal analysis, Mettler Toledo’s robust techniques, safe chemical handling, automation and integrated sample and result management, provide the perfect solution for your mining operation. Should you wish to receive a free digital copy of the Mettler Toledo Mining Applications booklet, please contact the company as per the details below.
NEW Taking one small step toward excellence.
MICROSEP (PTY) LTD Rudy Maliepaard Tel: (011) 553 2300 Fax: (011) 553 2400 rudy.maliepaard@microsep.co.za www.microsep.co.za
TUT uses Metrohm IC system in fight against AMD
S
outh Africa is facing one of the world’s largest mine water problems and, if not addressed properly, the environment, heritage sites and local drinking water resources will be irreversibly affected. Prof Christian Wolkersdorfer, the South African Research Chair for Acid Mine Water Treatment at Tshwane University of Technology, recently invested in a Metrohm 940 fully Automated Ion Chromatography system for quantification of Anions and Cations in mine water samples. Waste streams and remediation
processes require chemical analysis to ensure the environmental impact is minimal. This is where the Metrohm automated IC system comes into play. The major benefit of IC is that chemically similar substances can be analysed in a single run at a very low running cost. To assist with the tedious sample preparation prior to injection, samples are automatically diluted if necessary and filtered through a 0.2µM membrane before being introduced into the IC. The MagIC Net software monitors the sample results and where results are found to be outside the calibration range, the instrument automatically dilutes the sample with a logically calculated volume. The results thus obtained will assist the Prof and his team to better understand the processes occurring, while sharing this knowledge to the public and key stakeholders and thereby mitigating the adverse effects of AMD in and around Gauteng.
ANALYTICAL AND
PRECISION BALANCES
BY
METROHM SA (PTY) LTD Tel: (011) 656 1918 CPT: (021) 852 0213 DBN: (031) 265 0067 Fax: (011) 656 2698 076 643 7113 info@metrohm.co.za www.metrohm.co.za
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+27 (0)11 9749745 adamequipment.co.za
