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Thread: Dust Control for Crushers

  1. #1
    ellanos Guest

    Post Dust control for crushers

    We are trying to reduce dust emissions at 50 mt/hr chain crushers discharge in fertilizer plant.
    Presently crushers are fed directly from oversize screens discharge trough a 5-7 meters tall chute without any restriction.
    we have already improved somewhat by installing seals at discharge end transfer point to belt conveyor.
    However, we need to reduce air entrainment also.
    I have read about installing a feedbox with a minimum number of openings and also choking the feed to reduce air entrainment.
    Could anyone of you give me more details about the specific equipment used for this purpose?

    Thanks in advance

  2. #2
    Ellanos,

    The description you give indicates a plant which could have been better designed. Material falling 5-7 metres will entrain a lot of air. Choke feeding the crusher will reduce the emissions there. But, without major reconstruction, you will need to apply dust collection systems to control emissions. You have made a start by sealing the discharge to the conveyor. Enclosure of the dust sources is fundamental to success of these systems.

    Look at the guidelines in "Industrial Ventilation" published by The American Conference of Governmental Industrial Hygienists. Be generous in estimating exhaust flows (1.5 to 2.0 times recommended for "dry, dusty materials"). Refer to Fig. VS-50-20 and VS-99-01.

    Have a capable dust control contractor design the duct system for you and select a wet scrubber or bagfilter to collect the dust.

    Michael Reid.

  3. Hello Ellanos,

    Certain type of crushers require that the incoming material should enter at particular velocity so that there is proper crushing action and proper wear in crusher. Does your crusher have such functional requirement?

    The earlier respondent has already given good analysis / suggestion. It is difficult to say more without knowing your system, but generally would like to state that chute should be corrected for right entry of material (right velocity, which also implies its direction) so that crushing action is optimum and subsequent to that dust problem is to be tackled by dust collection system.

    Regards,
    Ishwar G Mulani.
    Author of Book : Engineering Science and Application Design for Belt Conveyors.
    Email : parimul@pn2.vsnl.net.in
    Tel.: 0091 (0)20 5882916

  4. Crusher Dust Control

    Its good to see your focus on controlling air entrainment.

    Yes, there are proven methods that can be employed successfully to choke the feed to the crushers however this depends totally on crusher type and configuration. Furthermore it will be necessary to fully encapsulate the feed arrangement to your scalping screens as well as the screen over and undersize chutes. To be effective your dust control difficulties will have to be adressed in total and not one section at a time as one ore path will affect the other.

    The crusher feed can be equipped with passive or active feed control to interrupt the air/ore path and enable full benefit of the fugitive emission controls... a 5-7 metre drop should be sufficient but dependant on detail.

    We have redesigned crushing and screening plant (that once employed complex ducted dust extraction systems) to include passive and active controls over fugitive emissions dramatically reducing operational and maintenance costs. Such an approach may well be relevant for your plant.

    If you'd like to email a photo and more detailed description we would be happy to comment further.

    Best wishes for 2004
    Regards

  5. #5

    Thumbs up DUST SUPPRESSION

    Dear Sir,

    We have pleasure to inform you that we are manufacturing speciality
    chemicals for various industrial applications. We have Dust
    Suppression products range 'DUSTRON' for the DUST SUPPRESSION in
    mining operation for haulage road in open cast mines and for the bulk
    material handling systems.

    We have a Memorandum of understanding (MOU) with Central Mining
    Research Institute (CMRI) Dhanbad, India which is a part of Council
    of Scientific & Industrial Research Govt. of India. CMRI is the world
    recognised Institute for the research in the field of mining
    operation.

    The following products are approved and accepted by the Indian Mining
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    1. DUSTRON PC Compound: For the open cast mines haul road where the
    dust emission is because of HEAVY EARTH MOVERS of high capacity
    trucks Dozzer, Tippler etc. DUSTRON PC is used for various class of
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    (1) Iron Ore Mines
    (2) Zinc Mines
    (3) Lime Stone Mines
    (4) Copper/Chromite Mines

    2.DUSTRON PC COAL : For the open cast mines haul road of collieries,
    railway sidings and coal jetty's road of the ports.

    3.DUSTRON PC LIGNITE : For the haulage roads of lignite open cast mines.

    4.DUSTRON XT : This product is used for the dust suppression of bulk
    material handling system where at the transfer point crusher house,
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    DUSTRON XT is used to control dust emission.

    5.DUSTRON XT COAL : For bulk material handling system of conveyors,
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    All the above products are used in Indian mining industries to control
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    Thanking you,

    Yours faithfully
    For N R D Industries
    DIPALI SHAH.

  6. #6

    Airflow of a disintegrator with chains

    With this message I wish to express the need to meet a technical requirement of air for a disintegrator with chains.

    The data is required for the design of a system for collection of dust in a NPK fertilizer plant.

    The fact is that the airflow that this kind of equipment could produce is needed for the proper functioning of the system for collection of dust.

    Other important features is the ambient temperature is up the sides of the 35 C and the humidity of the atmosphere is about 80%, as moisture from the raw material is up the sides of this 35%, the temperature of raw material ranges between 40 and 50 C, and the sizes of the particles of the incoming material are between 5 and 10mm, with an hourly production of 35 t / h, plus the size of the particle downstream is 2mm Approximately; material has high hygroscopic properties.

    An early reply would be appreciated, thank you in advance for your cooperation.

  7. #7

    DUST FREE ENVIRONMENT

    SOLUTION FOR DUST PRONE AREA
    TO FEEL DUST FREE ENVIRONMENT

    FOOD & SPICES INDUSTRIES
    DYESTUFF & COLOUR INDUSTRIES
    NATURAL GUM INDUSTRIES
    MINING INDUSTRIES
    HAUL ROADS
    DRILLING
    HANDLING & TRANSPORTATION
    CRUSHING
    CRUSH ORE / COAL AT STOCK PILE
    SCATTERED LOOSE OVER BURDEN
    THERMAL POWER PLANT
    COAL HANDLINGN & TRANSPORTATION
    COAL CRUSHING
    COAL STOCK PILE
    FLY ASH HANDLING & TRANSPORTATION
    FLY ASH STOCK PILE
    MINERAL PROCESSING PLANT
    IRON ORE ! COAL / LIGNITE HANDLING
    MANGANESE ORE ! COAL / LIGNITE CRUSHING & STOCK PILE
    BAUXITE ORE ! ORE HANDLING
    CHROMITE ORE ! ORE CRUSHING & STOCK PILE
    COPPER ORE ! SLAG HANDLING & STOCK PILE
    ZINC ORE ! FLY ASH HANDLING
    URANIUM ORE ! FLY ASH STOCK PILE

    CEMENT INDUSTRIES
    FERTILISER INDUSTRIES
    RAILWAY SIDING
    DOCK YARD
    JETTIES ON PORT - COAL / MINERAL HANDLING
    OIL DRILLING AREA IN DESSERT
    HELIPADS / AERODRAMS /AIRPORTS UNPAVED
    OPEN GROUNDS FOR FAIR & EXHIBITION
    DAMS CONSTRUCTION SITE
    ROAD CONSTRUCTION SIDE
    NORMAL SOIL BASED
    FLY ASH BASED
    RACE TRACKS
    ROAD SHOULDER

    SYNTRON INDUSTRIES
    411/ 5, Phase II, GIDC, Estate
    Vatva, Ahmedabad -382445, Gujarat, INDIA

    Marketed by:
    NRD INDUSTRIES
    86 Commonwealth Ave, Piscataway, NJ 08854. USA. Ph : 732-819-7932 E mail: nrdindustries@gmail.com

    Since 1978

  8. #8
    Join Date
    Feb 08
    Posts
    28

    dust control

    We have a Dust Control Solution that must be sprayed on any parts or areas that generate dust in any form. This product is rated as exceptional and it is also 100% Environmentally Friendly. It may not be what you are looking for since we see the word machinery and our product is a powder mixed with water to result in a sprayable solution. Please see Dust Stop at www.cypherltd.com for more details.

    Regards,

    Norm Burns
    Ph. 204 489-1214
    E-mail. aquarian@mts.net
    Web Site. www.cypherltd.com
    Norm Burns

  9. #9
    jlucas Guest

    dust collection

    Our system is designed for rock drills , but can be modified for many types of applications.

    www.qmpcorp.com

  10. #10
    Dustless technologies are very important for industry. As our employees, they have to wear specific clothes all over the year.

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