Re: Screening Machine For Saw Dust Charcoal
Originally Posted by Azhar
I'm looking for the advice from the expert over there.
My company is manufacture steam activated carbon from wood base. My conpany located in Prai Malaysia.
We are using saw dust charcoal as our raw meterial to produce Steam activated carbon. Before the activation process Saw dust charcoal have to go throught the screening process to removed all the impurities and unwanted material. At this moment we are using Trommel as a screening machine, diameter is 1157mm x 3000mm and mesh size is mesh#4 (6mm holes). We are looking new type of screening machine since the trommel gave us very much problems such as:
1. screening mesh chocked due to wet charcoal (40%)
2. Over size charcoal ( over mesh 4 ) still can collected after the trommel, which mean that over size charcoal can pass throught the trommel.
3. over flow at trommel outlet.
Now I'm looking for new screening machine which can be resolve all the problems. Could anyone from here can give your advice what type of screening machine is suitable for our application.
our specification as below:
a. to screen wet and dry material range from 10% to 40% moisture.
b. Less blinding on the screen.
c. 5-6 ton/hrs screening capacity
d. mesh size 4 or 6mm hole
e. No oversize can escape from the screening process.
One more thing is which type of screening machine is suitable for saw dust charcoal with 40% moisture?..
Thanks.
Please help me............... please... ■
Blinding Problem
I would suggest that you use a "D"style wire for your product, in a stainless steel wire, with urethane over your cluster locations.
What these screens do, is the "D" configuration, the wires operate independently from one another and with the urethane clusters, screen acts like a trampoline so it keeps the material moving continuously.
If you would like any brochures e-mailed to you, please contact me via e-mail at julies@twincitywire.com.
Thanks and hope this info helps! ■
Screening Hard To Screen Material.....
Dear Sir:
first of all ....... we thankyou for your participation in our FORUMS, much appreciated.
Secondly, I would like to personally welcome a new forum member Julie Suniga our NEWEST member from the MICHIGAN WIRE COMPANY....A Very sharp, experienced person in the wirecloth industry....and someone I am glad to say we do business with in CANADA. (NOW to get off the commercial)
The moisture content is thee PROBLEMATIC here. I would suggest and or recommend a CEC SCREEN IT....which has a very AGGRESSIVE..STROKE...and corresponding ACCELERATING FORCE ...as well as, proper feed to the screen (full width, proper bed depth feed, critical to the screen, A BIG STROKE, lots of shake and BAKE!!!, A step deck....configuration...which will TUMBLE THE MATERIAL to show all sides to the openings in the WIRECLOTH......a very good thing, special STAINLESS STEEL WIRECLOTH, SELF RELIEVING type of manufacture...as mentioned by JULIE...quite correctly, and a BALL TRAY to bounce 2" diameter balls from the underside of the fine OPENING in the screen cloth......and KEEP THE MATERIAL CLEANED OUT OF THE OPENINGS...AND not ALLOW TO PLUG THE OPENINGS...can be PORTABLE or STATIONARY. 5x12 up to 6x16. Now....i actually sell this screener....as a distributor....i recommend it........WHY???? because it works.........you CAN BUY FROM ANY DEALER ANYWHERE in the USA or from me in CANADA......i am NOT TRYING to make a sale........this RIG will do the job......SUGGEST this....rather than buy a machine....and hope for the best......send a few 5 gallon pails of it.......tome or factory or a 45 gallon drum....for a proper test.......and confirm it will work before buying it.
happy screening........peace. ■
Azhar,
I would suggest a forced-vortex Air Classifier system. The system capital cost will most cetainly be more than a screener, but you might also reduce total processing costs by benefitting from the material handling aspects of this arrangement. A coarse fraction exits the bottom and a fine fraction exits the top. The fractions point, or cut point, is adjustable using the Classifier Wheel speed and airflow. You will need a Fan and Dust Collector to complete the basic system.
Attachments
cmssa1284 cms cl20 classifier (JPG)
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Re: Screening Machine For Saw Dust Charcoal
Originally Posted by Kevin L. LaytonKevin,
Thanks for your suggestion... can this classifier screen the saw dust with 40% moisture content?... ■
Azhar
I would expect air classification to perform better on that specific material than screening. Consider the Air Classifier as a dynamic screen. High volume & high velocity airflow conveys the material to the unit's Classifier Wheel, where the separation occurs. Inlet or conveying air temperature can be controlled if cost effective for the process material. ■
Re: Screening Machine For Saw Dust Charcoal
Dear Sir,
I would like to suggest you to visit the website of my employer: www.rotex.com.
Rotex is a well known manufacturer of screening equipment with 100 years experience in screening a wide variety of materials, including carbon.
The typical Rotex gyratory motion (low speed, high stroke) will give the mesh cleaning balls the force they need to clean the mesh. I would recommend to contact our US based headquarters to get in touch with the responsible sales rep for your area. He will be able to answer your questions regarding the screening issues you have.
I do agree with Mr. Baker that the moisture is your biggest trouble maker and most probably the main cause for your blinding problems.
Please do not hesitate to contact me should you have any further questions. ■
Pelletron Deduster
Dear Azahr,
We at Pelletron make dust separation equipment ideal for your application.
We have machines that range in capacity from 20 lbs/hr up to 200,000 lbs/hr.
Enclosed you will find a test report on two applications such as yours.
Sincerely,
Dennis A. Kearn
Pelletron Corporation
Sales Engineer
href="mailto:dennis.kearn@pelletroncorp.com">dennis.kearn@pelletroncorp.com
E-mail:
href="mailto:dennis.kearn@pelletroncorp.com">dennis.kearn@pelletroncorp.com
Attachments
pelletron_midmaxxpseries_en (PDF)
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Sawdust Screening
Dear Azahr,
We have installed many raw sawdust screening systems with moisture contents up to 55% that have worked well with minimal blinding; granted this was not sawdust charcoal. One of the best, high capacity gyratory screens is manufactured by BM&M Screening Solutions in Surrey, BC, Canada and is used on many materials. Their website is: www.bmandm.com. Their president, Colin Jackson is very knowlegeable.
G.F. Paul Janz
Senior Specialist, Biomass and Wood Handling
Ausenco Sandwell
855 Homer Street
Vancouver, BC, V6B 2W2
Canada
T +1 604 684 9311
D +1 604 638 4628
F +1 604 688 5913
E paul.janze@ausencosandwell.com
W www.ausenco.com ■
Screening Machine for Saw Dust Charcoal
Dear all,
I'm looking for the advice from the expert over there.
My company is manufacture steam activated carbon from wood base. My conpany located in Prai Malaysia.
We are using saw dust charcoal as our raw meterial to produce Steam activated carbon. Before the activation process Saw dust charcoal have to go throught the screening process to removed all the impurities and unwanted material. At this moment we are using Trommel as a screening machine, diameter is 1157mm x 3000mm and mesh size is mesh#4 (6mm holes). We are looking new type of screening machine since the trommel gave us very much problems such as:
1. screening mesh chocked due to wet charcoal (40%)
2. Over size charcoal ( over mesh 4 ) still can collected after the trommel, which mean that over size charcoal can pass throught the trommel.
3. over flow at trommel outlet.
Now I'm looking for new screening machine which can be resolve all the problems. Could anyone from here can give your advice what type of screening machine is suitable for our application.
our specification as below:
a. to screen wet and dry material range from 10% to 40% moisture.
b. Less blinding on the screen.
c. 5-6 ton/hrs screening capacity
d. mesh size 4 or 6mm hole
e. No oversize can escape from the screening process.
One more thing is which type of screening machine is suitable for saw dust charcoal with 40% moisture?..
Thanks. ■