There Some Working Theory About Flotation Machine
In view of the speed of mechanical flotation machine impeller is relatively high, the inflatable stirring device is easily wear and tear damaged, so argillization is serious. Besides, it is large power consumption (reported only 20% electricity transformed into effective work). The flotation speed is slow and separation standard is low. In order to overcome above shortages, we developed mechanically stirring air-charging floatation machine and put it into practice. In addition to the inflatable stirring by impeller, the machine pressed air into the pulp. Due to the additional pressure gas, we may be appropriate to reduce the rotor speed, thus it overcomes the mechanical wear, and improves mechanical properties. There are a lot of this kind of flotation machines, such as Denver DR flotation machine, the Aki Blantyre type flotation machine, Maxwell flotation machine and so on.
Now we take Denver DR flotation machines as an example. When Denver DR flotation machine works, the slurry is pulled through the annular space of the inhalation of hollow tube and loop tube, air is pressed by pressure air compressor along the hollow tube. Circular cylinder connected with interconnected hollow tubes with ribs. Radiation-like leaves are on the mixing impeller, forming a gap between impeller and cover board. Denver DR flotation machines, slurry loop is along the circumference of the loop tube 2 and a high liquid level, thus ensuring the pulp in a large volume of circulation, when the tank slurry formation of upwelling, prompting mineralization bubble rising to the slurry surface. According to this principle, the pulp return impeller mixing zone of the solid content is low, thus improving the dispersion of air, reducing power consumption and reduce the wear and tear on the impeller and cover. Meanwhile, the Denver DR flotation machine can also improve the granularity of flotation material, which is due to the increase of the amount of slurry by the impeller circulation, improve the speed of the upwelling, to ensure the effective suspension of mineral particles. To a service-oriented brand integrity,As the professional manufacturer of complete sets of mining machinery, like sand washer, Henan Hongxing is always doing the best in products and service.impact crushing machine:http://www.hx-crusher.com/n120.html
From the flotation process performance of flotation machine, as with the flotation of the fine mineral particles and the secondary particles, the high contact efficiency and adhesion efficiency between the fine mineral particles and bubbles reduce the flotation effect of the flotation machine and the large particles also affect the carrying capacity. Which slow the fine mineral flotation speed, decrease the mineral recovery rate and the flotation index. In order to strengthen the fine particles flotation effect of flotation machine, we can take the following measures:
1. Measures preventing the disruption of pulp flotation process mainly include:
1) Desliming: adding a little foaming agent before the flotation can clear the slurry advance.
2) Adding dispersing agent can completely remove the’ sand covered’ and not easily beneficiation mineral particles.
3) Adding medicament step by step. Which can maintain the effective concentrations an improve the washability.
4) Reduce the foam concentration.
2. In order to improve the grade of flotation, the collectors can be chosen based on the chemical adsorption and chelating ability of fine mineral particles.
3. Adopt chemical or physical methods to improve the mineral particle flotation velocity and sorting grade of flotation machine.
4. Reduce the size of the bubble, which can increase contact surface between the gas and liquid, increasing the collision rate. The advantages of the fine mineral flotation mainly includes two procedures:
1) vacuum flotation;
2) electrolytic flotation: use the brine electrolysis to generate micro bubbles.
Processing your request, Please wait....
