Cassiterite Recovery from Tungsten Residues Through Centrifugal Gravity Concentration

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Yang, Junyan^1^2 ; Song, Bo^2 ; Wang, Lijun^1

Mining, Metallurgy and Materials Research Institute, General Research Institute for Nonferrous Metals, Beijing

100088, China^1

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing

100083, China^2

关键词: Centrifugal concentrators;    Closed circuit;    Gravity concentration;    Mass concentration;    Polarizing microscopes;    Size fraction;    Tungsten residues;    Washing water;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022133/pdf
DOI  :  10.1088/1755-1315/300/2/022133

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Tungsten residues contain abundant valuable minerals that are difficult to be recovered by traditional gravity and flotation process.This study presents a route, centrifugal concentration for cassiterite recovery from tungsten residues through centrifugal concentrator. There were separated to three size fractions by experiment of elutriation using rotary flow analyser and cassiterite was observed by polarizing microscope and X-ray diffraction analysis. Results showed that after closed-circuit experiment of centrifugal concentration in the condition of roughing rotate speed of 850rpm, pulp mass concentration of 15%, washing water flow rate of 2L/S and concentrating rotate speed of 550rpm, the grade and recovery of Sn were 18.63% and 82.17% respectively. After closed-circuit experiment, Sn recovery of size fraction was calculated. Sn recovery of size fraction was 97.93% in size fraction of -37+20um, 82.94% in size fraction of -20+10um and 66.49% in size fraction of -10um. This study demonstrates that the centrifugal concentration provides a promising process for the recovery of cassiterite from tungsten residues.