Vibrating screen performance is affected by many factors, such as the ability and inclination angle device, wherein the performance by shaker screening efficiency and luminous flux of products significantly affect the measurement. 
Flux is defined as the amount has been (under the screen) from the carrier per unit area of the screen of the desired component feed each time.  The vibrating sieve screening efficiency is expressed as the amount of the actual ratio of the material through the aperture, in theory, should by dividing the amount of the feed. Commercially available perfect shaker filter is considered to be 95% effective  If the process with an appropriate feed concentration and particle size of the operation. In general, a suitable particle size difference between screening and feed should not exceed 30%.  high screening efficiency can reduce the load and shaker in the loop filter, so the gain qualified content increases processing capacity of the mill.
The equipment capacity is almost proportional to the width of the screen. This means that by increasing the length of the channel will have additional opportunities, and usually leads to increased transmission and efficiency. In general, the length of the standard size of the screen width should be two to three times.  However, under certain circumstances, such as limited space, you may need a different design.
Tilt angle can be designed according to the desired mineral particles. For example, wet screening angle is generally 25 ± 2 ° of the concentrator. Increase the slope of the screen will effectively reduce the aperture by the cosine of the angle of inclination.  Meanwhile, the materials across the screen which results in more rapid fast hierarchical mobile.   However, after a certain point tends to reduce performance due to the slope of the deck is too high, and most large particles will remain in the stream, rather than through the opening, thereby generating low flux.