Knelson-Deswik Introduces KD-VGM10 Laboratory System
Shortly after turning the calendar to 2011, Knelson Milling Solutions unveiled the first Canadian manufactured Knelson-Deswik mill.
"Although it’s not a production mill, it does hold the distinction of being the first unit produced in Canada. We are all very proud of how well it turned out and we are looking forward to the grinding results that it will produce" stated Ian Lawler; Managing Director of Knelson Milling Solutions.
The skid mounted laboratory system consists of a KD-VGM10, two agitated slurry tanks, pumps and a comprehensive instrumentation package. It has been specifically designed to test bulk samples of 20 kg and to track a wide range of operating variables. Examples of the logged data include shaft speed and torque, mill current draw, slurry density, inlet and outlet temperature, and slurry viscosity.
The KD-VGM10 laboratory system has been commissioned and will remain at the Knelson Research and Testing Centre in Langley for the next few months. After preliminary testing and training is completed, the unit will be moved to the University of British Columbia. At UBC the mill will be used as part of a National Science and Engineering Research Council (NSERC) research program aimed at improving the efficiency of fine grinding operations.
KD-VGM10 Laboratory System
KD-VGM10 Laboratory System
"The Knelson-Deswik is a very young technology and as such, we’re very excited to get the NSERC program underway at UBC. We are looking forward to working closely with Dr. Klein to garner as much valuable operating data as possible" commented David Rahal; KMS Technical Director.
"We intend to augment the UBC work with a simultaneous NSERC program at McGill University. The McGill research program will include discrete element and computational flow modeling. This will allow us to get a better understanding of the dynamics within the milling environment" added Rahal.
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Gavin Fletcher, Senior Metallurgist - Afrika Mashariki Gold Mines, Tanzania
"The testwork for our operation suggested that a gravity circuit was not required due to the lack of free gold in the deposit. Thankfully the final design included an XD30 and gravity recovery is in the order of 6-10%. The free gold is very fine and subsequent tabling is very inefficient. Recent testwork of the ACACIA reactor suggests we will be able to double our gravity gold production, improve security in the gold room and also improve the health and safety of the gold room by alleviating the need for smelting of "dirty" gravity concentrates."
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