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Thread: Weighing of Bagasse - What is the Best Way?

  1. Post Weighment of bagasse- What is the best way?

    Dear Sir,

    Can anyone suggest the best and most accurate method to weigh Bagasse ( received from sugar mill after crushing) with a moisture content of 50%.
    The Bagasse will be transported on a belt conveyor.
    The feed from the mills will not be even and so the flow will be uneven

    Can a weigh hopper be used?

    In that case, if any company has intalled the same what is the expereince in extracting bagasse (which is not free flowing) from the hopper.

    I feel this area has not developed and I would sugget the experts in weighing field to make suggestions.

    KS Dilip

  2. #2
    Author Guest

    Weighing of bagasse

    Weighing of bagasse with a builtin beltweigher is possible. Depending on the
    parameters of the installation, can be made a decision. For a first overview,
    we need a drawing of the belt and the following information:

    belt width and trough-form p.e. 20, 3-fold
    belt inclination
    distance center axis

    belt speed in m/s
    nominal capacity in t/h,
    weigh system works proper in a range 1:5

    Best possible accuracy in the range of +/- 1 %.

    best regards
    Jef Zomerplaag
    Sales Germany

    Dr. Hans Boekels GmbH & Co, Am Gut Wolf 11, 52070 Aachen
    Tel: +49 241 1827 241
    Fax: +49 241 1827 210
    mailto:jef.zomerplaag@boekels.com
    WEB: http://www.boekels.com

  3. #3
    Author Guest

    Bagasse Weighing

    It is possible , but difficult, to weigh bagasse on a conveyor belt, but
    there have to be special cinsiderations as to the speed, width, troughing of
    the belt in order to achieve an acceptable specific loading of the belt such
    as to enable reasonable weighing to be done.

    I have experience of such an application in the Caribbean. As regards the
    handling aspects, these too need to be carefully considered in order to match
    the weighing requirements. A company such as Fletchet & Stewart should be
    approached for that question.

    Regards

    John Kelly
    JKelly8543@aol.com

  4. It may be possible to weigh the existing belt conveyor, as the other correspondents have stated.

    However, It may be possible to use a weigh hopper as you originally stated. Accutron manufactures and makes a complete line of feeding and weighing equipment.

    We handle all types of hard to handle materials (from raw powders to finished products (coins, nails etc))

    If you could please send me a sample of the material, we would be glad to run it through our test lab free of charge.

  5. #5
    Author Guest

    Bagasse Weighing

    Thayer Scale have several different design belt scales that can be retrofitted into existing belt conveyor systems.

    These belt scales can weigh regardless of intermittent flow. If you would
    like send us information on your conveyors and we can take a look at it.
    As for discharging Bagasse from silos, Vibra Screw has been successful in
    discharging this material using its Bin Activator.

    Sincerely,
    Thomas Picone
    Thayer Scale, Hyer Industries, Inc.
    Pembroke, MA 02359
    USA

    sales@thayerscale.com

  6. #6
    Author Guest

    Bagasse Weighing

    There a couple of possibilities here.

    1. Inline weighing by putting loadcells under a section of the conveyor will give a real overall weight to an accuracy of about 3%.

    2. Placing a receivable*hopper on loadcells will give accurate weight to 0.1%. To extract the material from the hopper you will probably need to use a screw feeder and possibly vibrator/agitator on the hopper. We know companies in Australia who have experience in this type of installation.

    Hope this helps.


    BEC Systems
    70 Glenmorgan St.
    East Brunswick, Australia 3057
    Ph: (613) 9386 6401* Fax: (613) 9383 3234
    <http://www.becsystems.com.au>www.becsystems.com.au

    "J Ottery"

  7. #7
    Author Guest

    Bagasse Weighing

    We would like to visit the plant and study the feasibility to offer a suitable weighing system.We believe we can do it.

    We work in the weighing area in the sugar industry though not
    specifically for bagasse weighing but we can offer a suitable system.

    Thanks and warm regards,

    Ashish Bhutani
    Director
    Ashbee Systems P.Ltd
    www.ashbee.com

    Email ashish_bhutani@vsnl.com

  8. #8
    ANATEC GmbH Guest

    Re: Weighment of bagasse- What is the best way?

    Originally posted by KS Dilip
    Dear Sir,

    Can anyone suggest the best and most accurate method to weigh Bagasse ( received from sugar mill after crushing) with a moisture content of 50%.
    The Bagasse will be transported on a belt conveyor.
    The feed from the mills will not be even and so the flow will be uneven

    Can a weigh hopper be used?

    In that case, if any company has intalled the same what is the expereince in extracting bagasse (which is not free flowing) from the hopper.

    I feel this area has not developed and I would sugget the experts in weighing field to make suggestions.

    KS Dilip
    Dear Sir,

    We propose you to use a Laser Scanner which is installed over the conveyor belt, measuring the exact profile of transported Bagasse material in very short time cycles (about 75 readings per second). In this way you will get the exact Volume Stream continuous (e.g. as cubic-metres per hour). If we take a unalterable density of Bargasse as a point of departure then we will get the exact tonnage of Bargasse also (e.g. in kilograms per second). Of course you need the scanner and an evaluation unit and the suitable software also.

    If there is your interest or any further information you would like to have please write me by fax or email.

    Yours sincerely,

    Dietmar Schingnitz

  9. #9
    atherjamal Guest

    Indirect Measurement

    hi,
    i have been to this problem of weighing bagasse online too. in my opinion, the solution to the problem is to measure the RPM of the rotory bagasse feeders. if we know the RPM of the bogasse feeders, and as the magnitude of bogasse being fed to the combustion chamber of the Bogasse Boiler is same (considering bagasse feeder as positive displacement type), if we multiply the amount of bogasse fed by the feeder in one rotation with the RPM of rotary feeder, we can get the total amount of bogasse in kgs/Hr.

    Assumptions:
    1. the shoot above the rotatry feeder should be filled with bogasse completely.
    2. the moisture contents of the bogasse should be considered same
    3. the calorific value of the bogasse is kept constant( to calculate the total heat input from bogasse)

    thanking you,
    Athar Jamal
    Sr. Energy Engineer
    IAEL, Pakistan
    ajamal@iael.com

  10. #10
    Join Date
    Mar 03
    Posts
    1,641
    You give no indication of rate to be handled but the following may be suitable, it having been used sucessfully in the past with asbestos fibre.

    A rotary drum with 3 compartments mounted on a weighing unit. The material to be weighed is fed into a compartment until sufficiently filled. The drum is rapidly indexed to the next compartment which fills while the first discharges and the process is repeated.

    The weighing controls totalise the throughput based on the individual weighments and convert it to an average rate according to requirement.

    The weighments are independant of material density (most important with materials of this type which can be subject to significant variation) or short term variations in rate provided the unit is adequately sized.

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