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Results of an attempt to remove sulphur from filter ash by the wet procedure
| Sample 5 (S5) | Mass (g) | Mass per cent (%) | Sulphur content (%) |
|---|---|---|---|
| 108.4 | 100.0 | 3.38 | |
| Insoluble material (5I) | 72.5 | 66.9 | 0.56 |
| Soluble material (5S) | 35.9 | 33.1 | 8.39 |
Classification at a cut size of 20 μm
| Sample 2 (S2) | Mass (g) | Mass per cent (%) | Sulphur content (%) |
|---|---|---|---|
| 251.7 | 100.0 | 3.38 | |
| Fine fraction (2F) | 128.9 | 51.2 | 3.30 |
| Coarse fraction (2C) | 122.8 | 48.8 | 3.44 |
Classification at a cut size of 30 μm
| Sample 3 (S3) | Mass (g) | Mass per cent (%) | Sulphur content (%) |
|---|---|---|---|
| 260.2 | 100.0 | 3.38 | |
| Fine fraction (3F) | 195.4 | 75.1 | 3.71 |
| Coarse fraction (3C) | 64.8 | 24.9 | 2.32 |
Classification at a cut size of 10 μm
| Sample 1 (S1) | Mass (g) | Mass per cent (%) | Sulphur content (%) |
|---|---|---|---|
| 258.4 | 100.0 | 3.38 | |
| Fine fraction (1F) | 56.3 | 21.8 | 0.55 |
| Coarse fraction (1C) | 202.1 | 78.2 | 4.19 |
Density measurements with a pycnometer
| Test no. | Density (kg/m3) |
|---|---|
| 1 | 2,445.8 |
| 2 | 2,579.5 |
| 3 | 2,539.5 |
Classification at a cut size of 40 μm
| Sample 4 (S4) | Mass (g) | Mass per cent (%) | Sulphur content (%) |
|---|---|---|---|
| 254.0 | 100.0 | 3.38 | |
| Fine fraction (4F) | 198.8 | 78.3 | 3.49 |
| Coarse fraction (4C) | 55.2 | 21.7 | 2.81 |
Determination of operating conditions for the centrifugal air classifier using the operating diagram of the classifier
| Cut size dTV (mm) | RPM n (min−1) | Airflow Q (m3/h) |
|---|---|---|
| 10 | 8,900 | 46.1 |
| 20 | 5,200 | 49.8 |
| 30 | 4,100 | 50.9 |
| 40 | 3,500 | 51.5 |