The Optimized Design on Spodumene Recovery from Iron Tailings in Kangding,Sichuan

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhao, Liuchuang^2 ; Liu, Quanjun^1,2 ; Liang, Yuanqin^1,2 ; Gao, Yang^2 ; Yu, Li^1,2 ; Jiang, Xu^2 ; Ji, Huichao^1,2

State Key Lab Complex Nonferrous Metal Resources Clean Utilization, Kuming

650093, China^1

Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming

650093, China^2

关键词: Closed circuit;    Comprehensive utilizations;    Concentrate grade;    Iron tailings;    Modifying agents;    Optimal dosage;    Optimized designs;    Secondary resources;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022162/pdf
DOI  :  10.1088/1755-1315/170/2/022162

学科分类：环境科学（综合）

来源: IOP

【 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.