Micro bubble flotation machine for a certain gold mine in Henan
| mineral species | device | Concentrate yield % | head gradeg/t | Concentrate gradeg/t | Enrichment ratio | tailings grade g/t | rate of recovery % |
| Sulfide ore | testing machine | 4.18 | 2.23 | 30.66 | 14.37 | 1.11 | 52.13 |
| flotation column | 3.93 | 2.23 | 22.46 | 10.57 | 1.38 | 36.53 | |
| High lead ore | testing machine | 2.98 | 1.24 | 29.16 | 24.93 | 0.52 | 57.95 |
| flotation column | 0.80 | 1.24 | 28.69 | 25.12 | 1.02 | 16.29 | |
| Oxide ore | testing machine | 2.19 | 1.29 | 38.70 | 26.47 | 0.77 | 42.06 |
| flotation column | 2.30 | 1.29 | 15.21 | 11.30 | 0.95 | 26.35 | |
| amount to | testing machine | 3.20 | 1.61 | 32.32 | 21.51 | 0.80 | 51.50 |
| flotation column | 2.35 | 1.61 | 22.75 | 16.06 | 1.14 | 26.39 |
