Comminution Effects on Mineral-Grade Distribution: The Case of an MVT Lead-Zinc Ore Deposit
Abstract
:1. Introduction
2. Materials and Methods
2.1. Sampling
2.2. Characterization Methods for Samples and Products
2.2.1. Optical Microscopy
2.2.2. Scanning Electron Microscopy
2.2.3. X-Ray Powder Diffraction Analysis (XRPD)
2.3. Crushing and Grinding Equipment
2.4. Sieve Analysis
3. Results
3.1. Optical Microscopy
3.2. Scanning Electron Microscopy
3.3. Crushing and Grinding
- crushing using the impact crusher and jaw crusher and
- grinding using a disk mill and rod mill.
3.4. Product Material < 0.425-mm Sizing
3.5. X-Ray Powder Diffraction Analyses
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Particle Size (mm) | Rwp (%) | S |
---|---|---|
0.425–0.350 | 5.90 | 2.20 |
0.350–0.300 | 5.54 | 2.07 |
0.300–0.250 | 5.55 | 2.07 |
0.250–0.212 | 5.55 | 2.06 |
0.212–0.180 | 6.21 | 2.33 |
0.180–0.125 | 5.50 | 2.05 |
0.125–0.090 | 5.86 | 2.20 |
0.090–0.063 | 5.87 | 2.21 |
<0.063 | 6.49 | 2.41 |
Particle Size (mm) | Weight Fraction (%) (1) | ||||
---|---|---|---|---|---|
ZnS | PbS | PbCO3 | PbSO4 | CaCO3 | |
0.425–0.350 | 65.59 | 4.09 | 2.52 | 2.93 | 24.87 |
0.350–0.300 | 66.82 | 4.14 | 3.04 | 2.67 | 23.33 |
0.300–0.250 | 69.32 | 4.28 | 3.08/ | 2.50 | 20.82 |
0.250–0.212 | 67.35 | 4.12 | 3.11 | 3.55 | 21.87 |
0.212–0.180 | 70.39 | 4.60 | 3.71 | 4.04 | 17.26 |
0.180–0.125 | 68.22 | 5.37 | 3.27 | 2.79 | 20.35 |
0.125–0.090 | 65.88 | 6.54 | 3.97 | 4.10 | 19.51 |
0.090–0.063 | 62.63 | 8.41 | 4.94 | 3.53 | 20.49 |
<0.063 | 51.50 | 7.97 | 6.43 | 7.20 | 26.90 |
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Baldassarre, G.; Baietto, O.; Marini, P. Comminution Effects on Mineral-Grade Distribution: The Case of an MVT Lead-Zinc Ore Deposit. Minerals 2020, 10, 893. https://doi.org/10.3390/min10100893
Baldassarre G, Baietto O, Marini P. Comminution Effects on Mineral-Grade Distribution: The Case of an MVT Lead-Zinc Ore Deposit. Minerals. 2020; 10(10):893. https://doi.org/10.3390/min10100893
Chicago/Turabian StyleBaldassarre, Gabriele, Oliviero Baietto, and Paola Marini. 2020. "Comminution Effects on Mineral-Grade Distribution: The Case of an MVT Lead-Zinc Ore Deposit" Minerals 10, no. 10: 893. https://doi.org/10.3390/min10100893