What are the solutions to the plugging of polyurethane screens?

Exploring the Causes and Solutions to Plugging of polyurethane screens

Plugging of polyurethane screens is a common problem in the mining industry. It occurs when the material being screened becomes stuck in the screen openings, blocking the flow of material and reducing the efficiency of the screening process. Plugging can be caused by a variety of factors, including improper screen selection, incorrect operating parameters, and the presence of contaminants in the material being screened. Fortunately, there are a number of solutions that can help to reduce or eliminate plugging.

Improper Screen Selection

One of the most common causes of plugging is the selection of an inappropriate screen for the material being screened. Polyurethane screens are available in a variety of sizes and shapes, and it is important to select the right one for the job. If the openings in the screen are too small, the material may become stuck in the openings and cause plugging. Conversely, if the openings are too large, the material may pass through without being adequately screened.

Incorrect Operating Parameters

Another common cause of plugging is incorrect operating parameters. If the speed of the screen is too slow, the material may become stuck in the openings. Similarly, if the feed rate is too high, the material may not have enough time to pass through the openings before becoming stuck.

Contaminants

The presence of contaminants in the material being screened can also cause plugging. If the material contains large pieces of debris, these can become stuck in the openings and block the flow of material. Similarly, if the material contains sticky substances, these can adhere to the screen and cause plugging.

Solutions

Fortunately, there are a number of solutions that can help to reduce or eliminate plugging. The first step is to ensure that the correct screen is selected for the job. It is also important to ensure that the operating parameters are set correctly. If contaminants are present in the material, it may be necessary to remove them before screening. Finally, it may be necessary to use a screen cleaning system to remove any material that has become stuck in the openings.

In conclusion, plugging of polyurethane screens is a common problem in the mining industry. It can be caused by improper screen selection, incorrect operating parameters, and the presence of contaminants in the material being screened. Fortunately, there are a number of solutions that can help to reduce or eliminate plugging.