Flotation line

A flotation line for treating mineral ore particles suspended in slurry, comprising a scavenger part with a scavenger flotation cell for the separation of slurry into underflow and overflow;

• and a scavenger cleaner part comprising a scavenger cleaner flotation cell for the separation of slurry into overflow and underflow wherein
• overflow from a scavenger flotation cell is arranged to flow into a regrinding step and then into the scavenger cleaner flotation part;
• underflow from a last scavenger flotation cell of the flotation line and a last scavenger cleaner flotation cell of the flotation line is arranged to be removed from the flotation line as tailings;
• at least 30% of the flotation volume in the flotation line comprises a mechanical agitator comprising a system for introducing flotation gas into the flotation cell;
• the flotation cells of the flotation line are connected in series and arranged in fluid communication so that a subsequent flotation cell is arranged to receive underflow from a previous flotation cell as slurry infeed;
• wherein the scavenger part or the scavenger cleaner part comprises a flotation cell with blast tubes for introducing slurry infeed into the flotation cell;
• or in that the scavenger part or the scavenger cleaner part is followed by a flotation cell with blast tubes for introducing slurry infeed into the flotation cell;
• a flotation cell with blast tubes configured to receive underflow from a scavenger flotation cell or a scavenger cleaner flotation cell as slurry infeed;
• and a blast tube configured to restrict flow of slurry infeed from an outlet nozzle, and to maintain slurry infeed under pressure in the blast tube.