Dear Sir,

There are many parameters when you select an over band conveyor metal separator. In reality it is not selection but design of a magnetic circuit. On the other hand, you decide which kind of magnetic circuit you will use for this specific need of application. Sometimes you use electromagnets or sometimes you use permanent magnets for your magnetic circuits. Mainly you look at the following criteria;

	The width of the belt; Your magnetic area should cover all of the width of the belt
	The height of the material on the belt; It effects to the hanging height of the separator. The magnetic power (This expression is used to express what I mean to everybody) decreases with the cubic value of the distance.
	The speed of the belt; You should give enough time to the separator, to catch and hold the tramp metal while it is passing under it.
	The bulk density of the conveyed material; Your magnetic separator should have enough power on the surface of conveyor belt to take the tramp metal from (under) the conveyed material when it is buried.
	The angle of conveyor idlers; It effects to the degree of the gravitational conveyed material force on conveyed material.
	The size of the particles conveyed on the belt;   It effects as lump weight on the tramp material to resist to the attraction force of the magnetic field.
	And some other parameters; Those may come from the specific application of the system.

Please do not hesitate to write if you have more specific inquiry or question.

Regards,

Mustafa Kemal Yunel
 
YUNEL ELEKTROMEKANIK LTD.
Cankiri Yolu 26. Km.
Akyurt 06750
ANKARA/TURKIYE
Phone  : +903128475200
Fax        : +903128475205
URL      : www.yunel.com
               www.yunel.com.tr
e-mail  : mky@yunel.com