Crushing, Screening & Conveying

Crushing, Screening & Conveying 2017-04-04T06:57:13+00:00
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screening efficiency (4 replies)

4 months ago
hulk 4 months ago

which formula can permit me to estimate a screen capacity and efficiency.

4 months ago
lordi 4 months ago

It is not so simple. For good results use Metso methodic in Metso Crushing and Screening Handbook. You can download it from

4 months ago
HAL 4 months ago
1 like by

Screen selection for capacity and efficiency is done while calculating through a series of formulas and selection through graphical curves. This can be viewed in the VSMA documentation or the Metso C&S Handbook or even in the Rock Processing Manual from Sandvik.  

Stewart Fernandez
6 days ago

screening efficiencies ARE simple , please keep it that way 

Stewart Fernandez
6 days ago
1 like by David

look screening efficiencies are simple, give me any screen and I will guide you on  its screening efficiency -   Its what I learnt in my early days with Tega India, honed the skill at Dunlop Skega - worked on it at Trellex/Trelleborg/Allis Chalmers / Svedala /Metso and then I perfected it or really understood it at - Corrotech/Melwire - Screenex - from a MASTER in the art         and I have been using the skills acquired on the job over 30 years , since then even . Please don't be put off by all the smoke and mirrors , It's simple - look at it this way 

1 WHY  are you screening at this stage ,  the material to go into the screen and what you want to do next

2 where will it go next and WHY and what is it doing at the next stage -  a working deck will tell you a lot - as well as what is happening AFTER 

3 WHY do you think the screening is NOT efficient   - YOU - define screen efficiency  🙂  this will be interesting !    I know that plant operators ARE THE BEST judge of screening performance 

4 WHY  are you using , whatever screening media , you have currently on the screen ?      - who selected the screen media ?  this will be even more interesting - this is a section where so often I hear that , FL Smidth, METSO, Schenk, Sandvik - sales rep said so - of course they will say so - each wants to push what makes the best ales for them to meet their sales targets - its their job       ---------------   in fact there is enough of material out there to teach you or guide on what various screen media will do - screen media will ALL work differently and delivery a different screening efficiency and at a different costs per tonne screened 🙂  - there are various types of screens - Xtensioned or modular - they can be - wire - poly coated wire, self cleaning, polyethylene., polyurethane - rubber - various duro - -composite wire and poly - slotted - round , rectangular - square apertures -    with flow - against flow - in line or staggered apertures        .......................................... do you really think its ok to use any of them for the job on hand , or do you think one, will work better than the other - WHY ?  

5 now WHY  do you think or know that your screen is NOT working at peak efficiency ?

5 WHY questions , answer each , what's the bet you will know what to do - next ?

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