How to Choose a Mining Slurry Pump?

Pump for Coal mine china is an indispensable auxiliary equipment in mine beneficiation, and its role cannot be underestimated. Mine slurry pumps are mainly used to transport raw ore pulp, concentrate ore pulp, or tailing ore pulp after grinding, screening, magnetic separation, and flotation. The centrifugal force of the slurry pump allows the solid-liquid mixed slurry to reach the designated operating point. In actual use of mining slurry pumps, the relative speed of the slurry and the over-flow parts such as the pump casing and the impeller is relatively large. The solid particles in the slurry will have continuous impact and abrasion on the pump body. The slurry will also cause chemical corrosion to the pump body, which will seriously affect the service life of the slurry pump.

The flotation process is taken as an example. After grinding, the solid-liquid combined raw pulp will be transported by a slurry pump to a screening device such as a hydrocyclone. A part of the concentrate enters the flotation operation, and the floated concentrate is first transferred to the pump box, and then sent to the thickener for dehydration by the slurry pump for the mine. The remaining tailings from the flotation will be discharged into the tailings pump box, and then discharged to the tailings dry discharge operation through the slurry pump or directly discharged to the tailings storage. The selection of each stage is not the same. If the selection is not good, it will greatly reduce the overall operation efficiency of the selection plant, causing losses in the selection plant. Regarding the selection of mining slurry pump models, we should pay attention to the following aspects.

The pump for coal mine manufacturer believes that: first of all, the basic parameters, flow rate and head of the slurry pump in the process flow should be clarified. Head refers to the energy obtained by pumping a unit weight of fluid through a pump. The flow rate is the amount of pulp liquid excluded per unit time. The head and flow rate determine the specific model and size of the slurry pump; it is also necessary to clarify the solid-liquid ratio, particle conditions, and PH value, because it has a high reference value in the selection of the slurry pump.

The second consideration is used after that process. Is it after the grinding process or after the flotation process with the medicine? In general, we will consider the wear resistance and corrosion resistance. Relatively speaking, after being used in flotation or other ore dressing processes with chemicals, the relative content of concentrates is less than that of tailings chemicals, so the two are in the selection process. Slurry pumps that handle tailings require extremely high corrosion resistance. There are other factors, such as flotation concentrate, with a certain proportion of foam. This is also a factor that needs to be considered in the selection of slurry pump. If the concentration of concentrate foam after flotation is high, a special foam slurry pump may be considered. This slurry pump is designed and produced for the flotation process. Another is the hydrocyclone. The classification of the hydrocyclone relies on centrifugal force. The greater the mine pressure, the higher the slurry flow rate, the greater the rotation speed and centrifugal force of the slurry, the better the classification effect and production efficiency. It has improved. The level of feed pressure depends on the slurry pump before it.

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