explain the term blinding of screen how is it prevented
Answers
Answer:
The terms “blinding” and “pegging” are often used interchangeably in describing material covering over screen surface area during any type of screening process, but there is a difference between the two. “Blinding” is typically caused by moisture or static energy in which a particle (or particles) adhere to the screen media. “Pegging” is caused when a particle (or particles) get stuck or wedged in between the wires of the screen media.
Preventing blinding and pegging
Because the McLanahan MD Vibratory Screen has screen decks at progressively steeper angles, we use screen opening sizes larger than the required actual size separation. This by itself reduces the potential for material to cause a pegging situation. However, screens having slotted openings are available to further reduce the potential for pegging. This is because a slotted screen offers more screen surface area, and the shape of the opening reduces the potential for a particle to get “wedged” inside the opening created by the four wires.