Application of Automated Quantitative Mineral Analysis System in Process Mineralogy of Low-grade Copper Slag

ZHANG Tao; SONG Wenlei; CHEN Qian; YANG Jinkun; HU Yi; HUANG Jun; XU Danni; XU Yitong

doi:10.15898/j.ykcs.202210250206

2023 Vol. 42, No. 4

Article Contents

Article navigation > Rock and Mineral Analysis > 2023 > 42(4): 748-759

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ZHANG Tao, SONG Wenlei, CHEN Qian, YANG Jinkun, HU Yi, HUANG Jun, XU Danni, XU Yitong. Application of Automated Quantitative Mineral Analysis System in Process Mineralogy of Low-grade Copper Slag[J]. Rock and Mineral Analysis, 2023, 42(4): 748-759. doi: 10.15898/j.ykcs.202210250206

Citation:

ZHANG Tao, SONG Wenlei, CHEN Qian, YANG Jinkun, HU Yi, HUANG Jun, XU Danni, XU Yitong. Application of Automated Quantitative Mineral Analysis System in Process Mineralogy of Low-grade Copper Slag[J]. Rock and Mineral Analysis, 2023, 42(4): 748-759. doi: 10.15898/j.ykcs.202210250206

Application of Automated Quantitative Mineral Analysis System in Process Mineralogy of Low-grade Copper Slag

1.
State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China
2.
Technology Application Department of TESCAN China, Shanghai 201112, China

More Information

Corresponding author: SONG Wenlei, wlsong@nwu.edu.cn

Received Date: 25 October 2022

Revised Date: 04 July 2023

Accepted Date: 17 July 2023

Publish Date: 31 August 2023

Abstract

Abstract

BACKGROUND
The high-efficient utilization of mineral resources is the leading research aspect of global mining development. Traditional optical and scanning electron microscopy have limitations in identifying the occurrence of elements in many low-grade ores and usually cannot provide quantitative mineralogy information, hindering the improvement of mineral processing of these ores. In recent years, automated mineral quantitative analysis systems based on scanning electron microscope and X-ray energy spectrometer have been increasingly applied to study complex ore formation and process mineralogy.
OBJECTIVES
To enrich and expand the application of an automated quantitative mineral analysis system in process mineralogy.
METHODS
The low-grade copper slag from a copper mine in China is analyzed using the TESCAN Integrated Mineral Analyzier (TIMA).
RESULTS
The results show that the content of the copper element (0.08%) in the copper slag is very low, and it is mainly distributed in chalcopyrite, which accounts for 0.21%. Gangue minerals include quartz (47.6%), muscovite (10.10%), and calcite (9.88%). Chalcopyrite usually occurs in irregular granular form and shows complex associations with the above gangue minerals. The particle size is small and variable, and the particles of 10-76μm occupy a large proportion. The mass of chalcopyrite with a liberation degree below 30% accounts for 85% of the total mass, and the overall liberation degree is low, so further grinding is needed to improve chalcopyrite recovery.
CONCLUSIONS
Research shows that for the ore samples with low content of useful minerals, small particle size, and complex mineralogical associations, the automated mineral analysis system, including TIMA, can provide rapid, quantitative, comprehensive, and accurate process mineralogy parameter information, which is conducive to optimizing the ore extraction and smelting process, and has an extensive application prospect in improving the comprehensive utilization of mineral resources.
- TIMA /
- automated mineral quantitative analysis /
- process mineralogy /
- copper slag /
- liberation degree

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References

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