| 摘要 |
The present invention provides a method for controlling gas circulation in mineral flotation with an apparatus comprising a gas recirculation loop, at least one flushing flotation cell unit and one or more sealed flotation cell units, comprising supplying flotation gas from the gas recirculation loop to each of the flushing flotation cell units and to each of the sealed flotation cell units; allowing flotation gas to expulse from the flushing flotation cell unit(s), wherein when the pressure of the flushing flotation cell unit(s) is less than the pressure of the sealed flotation cell units and greater than orequal to the atmospheric pressure at least part of the flotation gas is expulsed to the atmosphere, when the pressure of the flushing flotation cell unit(s) is greater than the pressure of the sealed flotation cell units then at least part of the flotation gas is expulsed from the flushing flotation cell unit(s) to the sealed flotation cell units;and/or when the pressure of the flushing flotation cell unit(s) is less than atmospheric pressure then gas is drawn into the flushing flotation cell unit(s); and collecting flotation gas from the head space(s) of the sealed flotation cell unit(s) and recirculating the collected flotation gas back to the flotation cell units via the gas recirculation loop. |
