The digital world runs on electronic devices, and often those devices run on lithium batteries. In nature, lithium is never found in its elemental, metallic state. Instead, it is extracted from lithium minerals found in rocks such as spodumene. For that reason, spodumene is a prized commodity that is mined on nearly every continent. Recently, ArrMaz, the leading supplier of specialty solutions which optimise mining process performance and efficiency, partnered with a spodumene mineral processor that wanted to produce a more concentrated, battery-grade spodumene product.
The client’s deposits faced metallurgical challenges, chiefly, a high percentage of quartz and iron silicates, mica, amphibole and other minerals that were degrading the quality of the spodumene product. The deposits were found to contain 10 - 20% spodumene. In order to reach battery-grade quality, the spodumene concentrate had to be upgraded from 0.8 - 1.2% Li2O to consistently more than 6.0%. The processing plant was achieving concentrate levels up to 4.5% at the time. Their goal was to not only improve the grade to 6%, but also improve recovery at the same time. That is when the company turned to the experts at ArrMaz.
ArrMaz quickly identified the commodity-type collector being used as an obstacle to achieving recovery and production targets. So ArrMaz developed a custom collector formulation tailored to the mineral processor’s unique feed, water and process. ArrMaz used its CustoFloat® technology to develop a custom-formulated surfactant-enhanced reagent, which was more effective at meeting the grade and recovery requirements for this particular deposit. Our consultants examined the entire mining process and made adjustments to feed processing and mineral conditioning parameters to maximise plant and reagent performance.
ArrMaz’s custom solution consistently met grade targets and provided acceptable recovery and production tonnes. Additionally, flotation selectivity improved as the ratio of lithium to iron increased significantly. Collector consumption decreased by 68%, while ease of handling and make-down efficiency surged. With the help of ArrMaz’s technical experts and custom collector formulation the site is now meeting or exceeding performance criteria, and the successful supplier-client partnership continues to this day.
Read the article online at: https://www.globalminingreview.com/exploration-development/07112018/arrmaz-aids-spodumene-producer-exceed-grade-and-recovery-targets/