Self-priming flotation machine is a common mineral sorting equipment. It uses mechanical stirring to fully mix the ore slurry with the air to form air bubbles containing mineral particles, so as to achieve mineral sorting.The following is a detailed introduction to the working principle of the self-priming flotation machine：

1. Impeller rotation: When the impeller rotates, a negative pressure zone will be generated in the impeller cavity, and this negative pressure zone will inhale air and slurry.Air is sucked into the impeller cavity through the suction tube and mixed with the slurry under the impeller.

2. Slurry mixing: The centrifugal force generated by the rotation of the impeller throws the slurry from around to around the impeller. At the same time, the slurry is sucked into the impeller cavity through the diversion tube under the impeller, and it is mixed with the inhaled air in the middle of the impeller to form a three-phase slurry (solid particles, liquid and gas).

3. Bubble formation: The mixed slurry leaves the impeller and blade with greater tangential and radial momentum.When the slurry passes through the opening on the stator, the tangential momentum is converted into radial momentum, resulting in a local turbulent field, which contributes to the mixing of air and slurry and the refinement of air bubbles.

4. Flotation separation: After the air-slurry mixture leaves the stator, it enters the main slurry in the tank, and the flotation separation process is completed in the flotation zone.The mineralized bubbles rise to the foam area, and the remaining slurry is returned to the bottom of the tank for recycling.

5. Foam product collection: During the flotation process, the enriched mineral bubbles rise to the top of the flotation tank to form a foam layer. The foam product is scraped out by the scraper. This is the final product of the flotation operation.

6. Tailings discharge: The unmineralized ore slurry is used as tailings and discharged from the bottom of the flotation tank to complete the entire flotation process.

The technical characteristics of the self-priming flotation machine include self-priming air, good slurry circulation characteristics, relatively stable suction volume, moderate stirring strength, good suspension of solid particles, stable liquid level and low power consumption.These characteristics make the self-priming flotation machine suitable for the sorting of non-ferrous metals, ferrous metals and non-metallic minerals, especially for the rough selection and sweeping operations of large and medium-sized flotation plants.

The design of the self-priming flotation machine allows it to work without the need for additional air and pump sources, simplifying the operation process and reducing energy consumption and operating costs.In addition, such flotation machines usually have high processing capacity and good flotation effect, making them an important equipment in the field of mineral processing.