1 Introduction
2 Separation Process
3 Influence on the Charging Mechanism
4 Characterization of the MgO Sample
Mesh | Yield | Residual | Passing |
---|---|---|---|
µm | % | % | % |
>100 | 13.20 | 13.20 | 86.80 |
100/63 | 26.73 | 39.93 | 60.07 |
63/40 | 19.86 | 59.79 | 40.21 |
40/0 | 40.21 | 100.00 | 0.00 |
Mesh | MgO | CaO | SiO2 |
---|---|---|---|
µm | % | % | % |
>100 | 51.25 | 20.06 | 9.15 |
100/63 | 75.15 | 7.38 | 5.07 |
63/40 | 83.48 | 4.37 | 2.93 |
40/0 | 85.77 | 3.63 | 2.86 |
5 Experimentation
5.1 Experimental Design
5.2 Triboelectrostatic Belt Separator
5.3 Influence of Machine Parameters
5.4 Experimental Setup
5.5 Optimum Machine Parameters
5.6 Particle Size Distribution of the Products
Mesh | Yield | Residual | Passing | MgO | CaO | SiO2 |
---|---|---|---|---|---|---|
µm | % | % | % | % | % | % |
>100 | 12.46 | 12.46 | 87.54 | 52.55 | 19.80 | 8.45 |
100/63 | 33.99 | 46.46 | 53.54 | 77.66 | 6.49 | 4.27 |
63/40 | 15.86 | 62.32 | 37.68 | 83.26 | 4.38 | 2.94 |
40/0 | 37.68 | 100.00 | 0.00 | 85.67 | 3.57 | 2.99 |
Mesh | Yield | Residual | Passing | MgO | CaO | SiO2 |
---|---|---|---|---|---|---|
µm | % | % | % | % | % | % |
>100 | 14.09 | 14.09 | 85.91 | 49.67 | 20.37 | 10.01 |
100/63 | 17.87 | 31.96 | 68.04 | 72.09 | 8.47 | 6.04 |
63/40 | 24.74 | 56.70 | 43.30 | 83.73 | 4.36 | 2.91 |
40/0 | 43.30 | 100.00 | 0.00 | 85.90 | 3.69 | 2.70 |
5.7 Division Number
5.8 Feed Temperature
Feed temperature | Product | Mass yield | SiO2 | CaO | MgO | |||
---|---|---|---|---|---|---|---|---|
Grade | Recovery | Grade | Recovery | Grade | Recovery | |||
[%] | [%] | [%] | [%] | [%] | [%] | [%] | ||
65 °C | Tailings | 59.79 | 3.43 | 63.72 | 5.01 | 59.35 | 81.79 | 59.62 |
Concentrate | 40.21 | 2.91 | 36.28 | 5.10 | 40.65 | 82.37 | 40.38 | |
Feed | 100.00 | 3.22 | 100.00 | 5.05 | 100.00 | 82.02 | 100.00 | |
25 °C | Tailings | 16.16 | 13.42 | 77.43 | 3.89 | 12.88 | 74.70 | 14.53 |
Concentrate | 83.84 | 0.39 | 11.57 | 5.10 | 87.70 | 85.01 | 85.77 | |
Feed | 100.00 | 2.80 | 100.00 | 4.87 | 100.00 | 83.10 | 100.00 | |
Difference [%]
| Tailings | 43.63 | – | −13.71 | – | 46.46 | – | 45.09 |
Concentrate | −43.63 | – | 24.71 | – | −47.05 | – | −45.39 |
5.9 Belt Speed
Belt speed | Product | Mass yield | SiO2 | CaO | MgO | |||
---|---|---|---|---|---|---|---|---|
[fps] | Grade | Recovery | Grade | Recovery | Grade | Recovery | ||
[%] | [%] | [%] | [%] | [%] | [%] | [%] | ||
12 | Tailings | 19.17 | 13.25 | 79.03 | 3.27 | 12.72 | 76.21 | 17.68 |
Concentrate | 80.83 | 0.83 | 20.97 | 5.31 | 87.28 | 84.12 | 82.32 | |
Feed | 100.00 | 3.21 | 100.00 | 4.92 | 100.00 | 82.61 | 100.00 | |
20 | Tailings | 24.14 | 11.33 | 88.10 | 3.55 | 17.27 | 77.59 | 22.65 |
Concentrate | 75.86 | 0.49 | 11.90 | 5.41 | 82.73 | 84.33 | 77.35 | |
Feed | 100.00 | 3.10 | 100.00 | 4.96 | 100.00 | 82.71 | 100.00 | |
28 | Tailings | 18.52 | 12.79 | 89.35 | 3.98 | 14.51 | 75.11 | 16.78 |
Concentrate | 81.48 | 0.35 | 10.65 | 5.34 | 85.49 | 84.69 | 83.22 | |
Feed | 100.00 | 2.65 | 100.00 | 5.08 | 100.00 | 82.91 | 100.00 | |
36 | Tailings | 16.16 | 13.42 | 77.43 | 3.89 | 12.88 | 74.70 | 14.53 |
Concentrate | 83.84 | 0.39 | 11.57 | 5.10 | 87.70 | 85.01 | 85.77 | |
Feed | 100.00 | 2.80 | 100.00 | 4.87 | 100.00 | 83.10 | 100.00 | |
44 | Tailings | 16.91 | 15.75 | 90.58 | 3.62 | 11.72 | 72.63 | 14.94 |
Concentrate | 83.09 | 0.33 | 9.42 | 5.55 | 88.28 | 84.18 | 85.06 | |
Feed | 100.00 | 2.94 | 100.00 | 5.23 | 100.00 | 82.23 | 100.00 |