Screen capacity equation

Posted in: , on 6. Sep. 2008 - 18:20

Hello fiends!

I have problem with screen capacity calculation...if anybody have equation (or something) for screen capacity I would be very grateful...

Davor Antoljak, quarry engineer at Kamen Sirač, Croatia

Screen Capacity Equation

Erstellt am 8. Sep. 2008 - 08:48

Hello friends!

I am calculating capacity of screens in our screening and crushing plant. But I can't find equation for it. If anybody have something to help I would be very grateful.

Best regards!

Davor Antoljak

Davor Antoljak, quarry engineer at Kamen Sirač, Croatia

Screens

Erstellt am 9. Sep. 2008 - 12:26

Davor,

Please back up and start from the beginning:

What are the upstream capacities(tonnages per minute or per hour prior to the screens if known? That is what rules the kingdom and what rules it as the screener can only process what it is given within limits of flow size and speed of delivery to the screen-to much and it blinds and you get over size, uneven feeding and you get excessive wear.

The capacity of the screens is governed by the size of the screen deck, the size of the material being screened, the delivery speed and the volume(tons per hour or minute)flowing over the screens, however many screens per screener you are using and most important the screens speed at maximum acceleration(what my buddy george and I refer to as shake and bake.)

Any empty screen operates at a certain maximum speed with the throw weights, shaker arms, and the V belt drive off the electric motor operating(revolving) at an exact number of revolutions per minute creating the orbit of the screen to do work.

If you can find the manuals for the screens they should tell you what you need to know.

There is also an association of member builders for screening and crushing equipment but you are at a point where you can do very little unless you have complete information about your screeners.

A single deck screener will screen faster than a multi deck screener but unless you have the puzzle parts its useless.

If the manufacturer is still a going concern thay can help you.

Screens

Erstellt am 9. Sep. 2008 - 12:26

Davor,

Please back up and start from the beginning:

What are the upstream capacities(tonnages per minute or per hour prior to the screens if known? That is what rules the kingdom and what rules it as the screener can only process what it is given within limits of flow size and speed of delivery to the screen-to much and it blinds and you get over size, uneven feeding and you get excessive wear.

The capacity of the screens is governed by the size of the screen deck, the size of the material being screened, the delivery speed and the volume(tons per hour or minute)flowing over the screens, however many screens per screener you are using and most important the screens speed at maximum acceleration(what my buddy george and I refer to as shake and bake.)

Any empty screen operates at a certain maximum speed with the throw weights, shaker arms, and the V belt drive off the electric motor operating(revolving) at an exact number of revolutions per minute creating the orbit of the screen to do work.

If you can find the manuals for the screens they should tell you what you need to know.

There is also an association of member builders for screening and crushing equipment but you are at a point where you can do very little unless you have complete information about your screeners.

A single deck screener will screen faster than a multi deck screener but unless you have the puzzle parts its useless.

If the manufacturer is still a going concern thay can help you.

The Three S's

Erstellt am 10. Dec. 2008 - 09:33

A a basic guideline, the previous post is a great place to start. Each screen manufacturer has their own "standards" for how much a screen will handle. Basically, it all comes down to physics. You must take several factors into consideration. Speed, Slope, and Stroke. Incline screens tend to have higher capacities than horizontal screens because they use gravity to help move the material.