Increase of segregation in winter

Posted in: , on 10. Mar. 2006 - 16:38

Does any one has a solution for this problem :

When the batch (mainly the sand) is dryed by soda (mostly in winter we have this problem), the segregation increases. Do you have a solution for this? Is heating the sand is a solution? If it is, how?

Re: Increase Of Segregation In Winter

Posted on 12. Mar. 2006 - 11:32

Maybe; if we knew what you were talking about.

John Gateley johngateley@hotmail.com www.the-credible-bulk.com

Segregation

Posted on 13. Mar. 2006 - 09:19

Let me guess. Moisture tends to inhibit segregation by making the sand less free flowing so, if the sand is dried to a greater degree by this process, it will allow the freer movement of the particles and aggrevate the tendency to segregate. Otherwise, more details of the application is needed to understand the situation.

Re: Increase Of Segregation In Winter

Posted on 23. Apr. 2006 - 07:27

Lynn,

I wonder if you statement means:

" moisture tends to increase or enhance segregation" and not "moisture tends to inhibit (stop?) segregation by making it less free flowing"

Maybe you can correct my thinking: in a less than fluidized state an increase in moisture will tend to bind the smaller ( < 0.1 mm)particles by surface tension thereby causing a separation of small and large particles. Don't the larger particles act in a more free flowing manner, while the smaller particles tend to agglomerate?

I agree that the drying, by adding soda, will make for a freer movement of the particles and (inhibit?) aggrevate the tendency to segregate.

Maybe I cannot think in the double negative and am in general confused? I applogize with such anticipation.

Heating will obviously drive off moisture and improve flowability. How is not my forte.

All this is relative and can be skewed by the data.

Lawrence Nordell Conveyor Dynamics, Inc. website, email & phone contacts: www.conveyor-dynamics.com nordell@conveyor-dynamics.com phone: USA 360-671-2200 fax: USA 360-671-8450