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| Experimental study on the recoverability of tin from a fine-grained low-grade tin tailings in Yunnan |
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Received:June 06, 2024
Revised:June 27, 2024
Accepted:August 06, 2024
Published Online:August 05, 2025
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| DOI： |
| KeyWord:microfine particles; tin tailings; desliming; heavy-floating combined process |
| Author | Institution |
| chenjiejiang |
1. School of Land and Resources Engineering, Kunming University of Science and Technology ; 2. The State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources ; 3.Green comprehensive utilization of metal mine tailings resources National Local Joint Engineering Research Center |
| xiexian |
1. School of Land and Resources Engineering, Kunming University of Science and Technology ; 2. The State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources ; 3.Green comprehensive utilization of metal mine tailings resources National Local Joint Engineering Research Center |
| wangxiang |
1. School of Land and Resources Engineering, Kunming University of Science and Technology ; 2. The State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources ; 3.Green comprehensive utilization of metal mine tailings resources National Local Joint Engineering Research Center |
| tongxiong |
1. School of Land and Resources Engineering, Kunming University of Science and Technology ; 2. The State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources ; 3.Green comprehensive utilization of metal mine tailings resources National Local Joint Engineering Research Center |
| lvjinfang |
1. School of Land and Resources Engineering, Kunming University of Science and Technology ; 2. The State Key Laboratory for Clean Utilization of Complex Nonferrous Metal Resources ; 3.Green comprehensive utilization of metal mine tailings resources National Local Joint Engineering Research Center |
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| Abstract: |
| The tailings of a tin concentrator in Yunnan contain more fine-grained cassiterite, which has great recovery value. In this study, gravity separation, flotation and gravity-flotation combined process were carried out to improve the comprehensive recovery rate of ore and realize the efficient resource utilization of tin tailings. The results show that the particle size composition of the ore sample is fine, and the content of light gangue such as calcite and dolomite is high, resulting in a large content of slime in the flotation process, and the direct flotation index of cassiterite is poor. Pre-desliming is beneficial to improve the flotation index of cassiterite, and the desliming effect of centrifugal gravity separation is better than that of flotation desliming and shaking table gravity separation desliming. Finally, the gravity-flotation combined tin separation process of centrifugal gravity separation desliming, one roughing, one scavenging and two cleaning is determined. The closed-circuit index of Sn grade 3.121%, recovery rate 42.85% and enrichment ratio 20.31 can be obtained, which provides a reference for the resource utilization of similar refractory tin tailings. |
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