中国矿山工程

A lithium mica mine in Jiangxi Province, where the ore is characterized by high clay content. During the mineral processing, the primary/secondary sliming of ore affects the flotation conditions of lithium mica, leading to a deterioration of flotation conditions, resulting in a loss of lithium mica recovery rate and poor concentrate grade. To address the issue of low recovery rate of high-clay lithium mica, a mineral processing experimental study was conducted using the “cyclone desliming-flotation” process. The experimental results show that under the conditions of a slurry concentration of 30%, the sodium hexametaphosphate dosage of 350g·t^-1, and the collector EF1128 dosage of 400g·t^-1 under the roughing processing, the the lithium mica concentrate concentrate was obtained with Li₂O grade and operating recovery of 1.65% and 86.13%, respectively, by using of one roughing, two cleaning, two scavenging, and middles back to the flowsheet in turn.