| Sample Preparation |
| 4.1 |
Crushing 1 kg sample to -3.35mm |
| Blending and splitting 1 kg sample |
| Environmental fee for 1 kg sample - reject storage or neutralizing/eliminate |
| Screening |
| 4.2 |
Screening 1 kg sample size over 3 mm |
| Screening 1 kg sample size up to 3 mm |
| Drying |
| 4.3 |
Drying at 60-170оС for an hour |
| Drying sample 1 kg at 60-105оС for 12-24 hours |
| Comminution |
| 4.4 |
Bond work indices for ball mill |
| Bond abrasion indices |
| Bond crushing indices |
| Grinding kinetics |
| 4.5 |
Grinding kinetics (per points) |
| Grinding |
| 4.6 |
Grinding 1 kg sample in ball mill |
| Flotation |
| 4.7 |
Rougher /1 kg/ |
| Rougher /2 kg/ |
| Cleaner /not including rougher/ |
| flowsheet development and locked cycle test to be counted by cleaner and grinding stages |
| Magnetic Separation |
| 4.8 |
Dry magnetic separation /to 10 kg/ |
| Wet magnetic separation /to 10 kg/ |
| Davis tube per 50 g |
| Gravity |
| 4.9 |
Gravity /10 kg/ |
| Separation by shaking table /1 kg/ |
| Re-Separation by shaking table /1 kg/ |
| Separation by spiral /1 kg/ |
| Leaching |
| 4.10 |
Bottle roll testing for 48 hours 0.1-1 kg sample /leaching kinetics at 4 points/ |
| Agitated leaching testing for 48 hours 0.1-1 kg sample /leaching kinetics at 4 points/ |
| Leaching to 0.1 kg sample |
| Small diam.columns /9 kg sample at size 25 mm/ |
| Intermediate diam.columns /240 kg, size / |
| Large diam.columns /above 1 tonne size over/ |
| Reporting |
| 4.11 |
Reporting |
| Coal Preparation, Washability |
| Screening |
| 4.12 |
Coal Screening by Washery plant size /moisture, ash, sulphur/ |
| Float and sink |
| 4.13 |
Float and sink testing by heavy liquid at size over >1mm |
| Float and sink <1mm |
| Coal separation by spiral separator at size 0.2-1mm |
| Coal flotation at size 0.074-0.2mm |