Hydrocyclone working pressure
Writer： admin Time：2020-08-10 16:38 Browse：℃
In today's era, various environmental protection and energy saving policies and measures have become the development trend of civilized life that we are familiar with. As everyone, they play an irreplaceable role in promoting social development and human progress, and are the main pillar of our social development. , And the cyclone has also kept pace with fashion. Hydrocyclones are widely used in mineral classification, separation, desliming, concentration and tailings filling and dam construction. The working pressure of hydrocyclones mainly refers to the feeding pressure of materials, which has a huge impact on the work effect.
Before understanding how the working pressure of the hydrocyclone affects its working effect, let’s look at the principle of the hydrocyclone: ??the material is fed into the cylinder part at a certain pressure along the tangential direction, and the material moves along the inner wall of the cylinder. Under the combined action, the denser materials move downwards spirally along the inner wall of the cylinder, and are finally discharged from the discharge port at the bottom. The denser materials spiral upward through the separation interface along the central part, and finally pass through the overflow pipe. The discharged and finer ore particles form an inner spiral upward ore slurry flow with water in the center of the cone and are discharged through the overflow pipe. It can be seen from the working principle that when the feeding pressure increases, the feeding speed increases, and the processing capacity will be greatly improved, but when it increases to a certain value, other indicators will not change. However, when the pressure is too high, the underflow concentration will increase, the overflow concentration will decrease, and the energy consumption will increase, which will cause serious wear of the hydrocyclone. In other words, the working pressure of the hydrocyclone only affects its processing capacity and does not affect the graded particle size.
hydrocyclones are widely used in classification, desliming, dewatering, thickening, tailings filling, and dam construction due to their easy installation, simple structure and small footprint. When selecting a hydrocyclone, its structural parameters and operating parameters have a greater impact, which is mainly reflected in the overflow particle size and classification effect. Its parameters include the diameter of the overflow pipe, the diameter of the underflow port, the installation method, etc., and hydraulics are also indispensable The influence of cyclone working pressure. That is, the feeding pressure. According to practice, when the feeding pressure is 49~157kPa, the working effect is better. But in the actual operation process, it should be selected in specific circumstances.
Pressure is an important parameter of a hydrocyclone. Only by controlling its pressure can the hydraulics exert better results. Generally speaking, under normal production conditions, the feed pressure when the cyclone is working in good condition is better. The abnormal pressure of the hydrocyclone will affect production.
1. If the feed pressure is too low, the underflow of the cyclone will contain a large amount of water, which will easily cause the high-frequency sieve to run out of water and the high-frequency sieve to disqualify the water.
2. If the pressure of the cyclone is too high, on the one hand, it will cause serious abrasion to the inside of the cyclone, which will shorten its life over time; on the other hand, the ability to recover coarse particles will decrease, and a large amount of coarse slime cannot be recovered. , Enter the concentration tank, increase the production pressure of the concentration system, the recovery pressure increases, resulting in an increase in torque or an increase in the number of plates produced by the filter press, and the subsequent equipment will also work abnormally.
According to different production needs, the pressure of the cyclone can be adjusted to increase or decrease the amount of slime discharged from the high-frequency screen, so as to meet the needs of different production pressures. For example, in the underground state, when the amount of the belt conveyor is controlled below 150t/h, the pressure of the cyclone can be increased, the amount of the high-frequency screen can be reduced, the moisture of the coal in the belt screen can be reduced, and the moisture and moisture of the coal transported outside the train can be guaranteed. Prevent product warehouse from fleeing warehouse.
Besides, how to judge the good working condition of the cyclone? Observe the bottom discharge of the cyclone, it is in the best state when the shower is in the state.
hydrocyclones can be used for solid-liquid separation, suspension concentration and liquid clarification operations. The operation of the cyclone differs in its main index requirements. In recent years, my hydrocyclones have achieved some results, most of which are used for coal preparation and smelting, but the research on gypsum cyclones for desulfurization in power plants is not too professional and in-depth.
Although there are differences in use, carding cyclones also have some common measurement standards. Compared with the research of solid-liquid cyclones, people's current energy is mainly concentrated on the indicators of pressure drop, separation efficiency, and separation particle size. The direction of optimization and research.
