期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：2
页码：022162
DOI：10.1088/1755-1315/170/2/022162
语种：English
出版社：IOP Publishing
摘要：In this paper, a flotation that implementing desliming in anticipation aimed at comprehensively recycling lithium from iron tailings in Kangding, Sichuan is put forward. Component of the iron tailings mainly with mica, limonite and chlorite which can result the serious sliming easily. Spodumene as the only desired mineral, the average grade of iron tailings is 0.76% Li2O. After predesliming process, the combined modifying agent Na2CO3-NaOH is used to inhibit mica, and the Laboratory-made collector QA-7 served as the collector to recycling spodumene. The results indicated that, via the Design-expert8.0 software to optimize the dosage of the regulators, the optimal dosage of Na2CO3-NaOH and QA-7 are selected as 1700g/t and 800 g/t, respectively. Meanwhile, via the predesliming-one roughing-five cleaning-two scavenging and middlings back to the flowsheet in turn process, the Li2O concentrate grade reached 5.71% with a recovery of 75.78% after a closed circuit experiment. In addition to realizing comprehensive utilization of iron tailings, the treatment is also a technical reference for handling the similar secondary resource.
