Wood and stainless will have different density. So when they are conveyed they will attain different momenum ( Mass x velocity ). So after the conveyor discharge they may fall at different distance. Stainless steel at far away than wooden chips. Accordingly we may provide a chute for separation.

Dear Mr.Designer : I have never seen such an arrangement. The above is purely based on my idea and assumption. Hope this may or may not help you. ■

Another wild idea if it is OK for you.

Can it be passed through a stream of water ?

Regards, ■

I am not sure the size of the peices you are working with but a General Kinematics air seperator might do the trick. They are commonly used in the wood industry to remove rock from hog fuel. Please let me know if you would like further information.

Best Regards,

Todd

http://www.generalkinematics.com/rec...m/productid/29 ■

I think u should go for Metal Detector with Pneumaticaly actuated Diverter Flap. U will get some wood-chips also alongwith metal.

Originally Posted by designer

Flotation separation has already been discounted as the chips are to be burnt so extra water to be evaporated is a no-no.

Ballistic separation, or impact rebound might work but I doubt it as the metal size range can be large.

Maybe metal detection in a chute with flap valve to divert the metal, as long as we don't get a huge pile of rejected wood chips with the metal.

I might have thought there would be standard equipment to remove stainless steel available, it must be a common enough problem?

■

The first question that occurs to me is "why is there stainless steel in the wood chips"

If you could change the metal upstream, you could use a magnet downstream. ■

Dear Mr.Designer,

Can you install a big fan in front of the vertical fall of this material?

Can wood chips be separated by this air stream which will be perpendicularly passing, of this falling material?

Rgds, ■

I see that Nippon Magnetics USA make a separator specifically designed to remove stainless steel from streams like wood chips.

http://www.nipponmagnetics.com/stain...dustry-10.html

But perhaps there are limitations according to the grade of stainless steel? ■

Originally Posted by Gopal Ambastha

I think u should go for Metal Detector with Pneumaticaly actuated Diverter Flap. U will get some wood-chips also alongwith metal.

My suggestion is to go with mr. Gopal`s idea. manually remove the rejects by hand. also to note the frequency of the SS material, which is vital to decide. ■