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Thread: Ball Mill Grinding

  1. #1
    Sai Microns Guest

    Lightbulb Ball Mill Grinding

    Dear Sir,

    We want to grind 300 mesh Dolomite power to fineness of 500 mesh in the Continuous Ball Mill having stone lining. Grinding media being used are river pebbles.

    We are going to procure 300 mesh powder produced in the hammer/roller mill. The 300 mesh powder grinding analysis is as follow (analyzed on Malvern Instrument).

    D-97 : 69 microns D-50 : 5 microns
    10 Microns : 30 -35% 20 Microns : 60%

    What is the maximum % of 10 microns that can be generated by way of Ball Mill Grinding (with pebbles). Objective is to have optimum grinding so as to get best yield of 10 microns by way of Centrifugal Air Classification Process.

    Ball Mill is of following configuration:
    Inside Diameter : 5.0 fts Length : 13.5 fts
    Mill RPM : 22 rpm Motor Power : 55 kW

    Th material being charged in the Mill is axially through pinion and the discharge is through slits in the periphery of the Mill Shell.

    Please advice what should be the ratio of pebbles to powder, the size of the pebbles and residence time of the material in the mill (or throughput rate) so as to achieve the optimum grinding.

    Thanks a lot in advance for the guidance

    Regards

    For Sai Microns

  2. #2
    Join Date
    Aug 04
    Posts
    2
    Dear Sir,

    We have a perfect solution for your enquiry.
    Please get in contact with us by e-mail.
    iva-gmbh@t-online.de

    Looking forward to hearing from you
    we meanwhile remain

    with best regards,
    B. Kretschmer

  3. #3

    Grinding Media

    Hi,

    We manufacture grinding balls in Russia and export it.

    Please let me know if require that.

    Thanks,
    Pavel
    pavel@esn.spb.ru

  4. Thumbs up

    when using a ball usually the yield on fine material especially when using big flint pebbles on 500 mesh is very low and for this reason the energy effeciency will rise dramatically and capacty will drop down. We could offer you an alternative solution with our agitated media mill MaxxMill, where grinding media in the size of 2 up to 9 mm are used. This machine was especially developed for the dry fine grinding below 63 micron. Experience for calcined diatomite grinding are available on request.

    Stefan Gerl
    stefan.gerl@eirich.de

  5. #5
    Join Date
    Feb 05
    Posts
    2
    February 11, 2005

    Dear Sir:

    Our Rotormill is capable to grind Dolomite limestone down to 300 mesh. We do not use a Ball Mill but the Rotormill. Please contact our office so that we can send our information package to you so that you can see how the Rotormill works. I believe that we can meet your specification of particle analysis and it is a continuous machine. We appreciate your interest in our equipment and we look forward to the possibility of working with you on your application.

    Very truly yours,
    Ronald C. Miller
    President

    IPEC
    International Process Equipment Company
    9300 Route 130 North, Pennsauken, New Jersey 08110
    Phone: 856-665-4007 Fax: 856-665-3991
    Email: Rotormill@aol.com

    WWW.ROTORMILL.COM

  6. #6
    Sai Microns Guest

    Dolomite & Calcite Grinding & Classification

    Dear Mr. Miller,

    Thanks for your response.

    We do have a Roller Mill from which we are able to generate 300 mesh product. We desire to have 500 mesh powder from the grinding mill which should contain atleast 60 % 10 microns particles.

    The coarse reject of the Centrifugal Classifer should be redirected to the Mill for regrinding alongwith the fresh materail.

    Thanking you and looking forward to receive your soonest response.

    Best Regards,

    H. B. Vyas

    SAI MICRONS
    C-3, Neelkant Apartments,
    Amrakunj Society,
    Ghoddod Road,
    Surat - 390 001

    Email : saimicrons@rediffmail.com, saimicrons@hotmail.com



    Originally posted by IPEC
    February 11, 2005

    Dear Sir:

    Our Rotormill is capable to grind Dolomite limestone down to 300 mesh. We do not use a Ball Mill but the Rotormill. Please contact our office so that we can send our information package to you so that you can see how the Rotormill works. I believe that we can meet your specification of particle analysis and it is a continuous machine. We appreciate your interest in our equipment and we look forward to the possibility of working with you on your application.

    Very truly yours,
    Ronald C. Miller
    President

    IPEC
    International Process Equipment Company
    9300 Route 130 North, Pennsauken, New Jersey 08110
    Phone: 856-665-4007 Fax: 856-665-3991
    Email: Rotormill@aol.com

    WWW.ROTORMILL.COM

  7. Post Re: Ball Mill Grinding

    hello ,
    i am martin yang from china. now i introduce our company to you as following:
    Haiying Minerals Development Co.,Ltd in Qingzhen City, Guizhou Province is a comprehensive mineral product producer integrating the development and processing of mineral products as well as mineral materials. HAIYING MINERAL PRODUCTS FACTROY ,a subsidiary enterprise of the company founded in 2003, is a specialized producer to make ceramic balls of corundumgrade aluminum oxide and high-temperature structural ceramics

    Products list :
    1. Wear Resistance Ceramic Ball With Middle Aluminum Content
    2. Wear Resistance Ball Of Corundum.
    ------------Specifications : Dia. 60mm 55mm 40mm 30mm
    3.--- Mill Linings With Middle Aluminum Content
    4.--- Refractory Materials Aluminous Rock
    6.---Refactory Brick And Clay Brick With Middle And High Content Of Aluminum
    7.-- Alumina Oxide Ball
    8. BAUXITE

    best regards
    martin yang
    Originally posted by Sai Microns
    Dear Sir,

    We want to grind 300 mesh Dolomite power to fineness of 500 mesh in the Continuous Ball Mill having stone lining. Grinding media being used are river pebbles.

    We are going to procure 300 mesh powder produced in the hammer/roller mill. The 300 mesh powder grinding analysis is as follow (analyzed on Malvern Instrument).

    D-97 : 69 microns D-50 : 5 microns
    10 Microns : 30 -35% 20 Microns : 60%

    What is the maximum % of 10 microns that can be generated by way of Ball Mill Grinding (with pebbles). Objective is to have optimum grinding so as to get best yield of 10 microns by way of Centrifugal Air Classification Process.

    Ball Mill is of following configuration:
    Inside Diameter : 5.0 fts Length : 13.5 fts
    Mill RPM : 22 rpm Motor Power : 55 kW

    Th material being charged in the Mill is axially through pinion and the discharge is through slits in the periphery of the Mill Shell.

    Please advice what should be the ratio of pebbles to powder, the size of the pebbles and residence time of the material in the mill (or throughput rate) so as to achieve the optimum grinding.

    Thanks a lot in advance for the guidance

    Regards

    For Sai Microns

    we can supply the Aluminum Oxide ball for Ball Mill, and the BAUXITE MATERIALS, and Grinding Ball.
    TEL: 0086 13595120059
    TEL / FAX: 0086 851 6745618
    Email: martinyang88@hotmail.com

  8. Lightbulb innovative ultra fine grinding solution

    Dear Mr. Vyas,

    We are an engineering team which is seeking cooperation to exploit a milling technology we have developed.

    Being an expert in grinding you would therefore understand our technology's potential;

    The technology we have developed is a continuous action planetary centrifugal mill,
    for economical large scale ultra fine grinding of super hard materials of ceramic & mineral origin.

    While in the development stage, we are providing milling services to local companies.

    (We are milling quartz sands, granite pebble, metallurgical slug, glass, zirconium oxide, silica carbide & etc)

    Production capacity of the prototype is 1.5 tons/hour (continuous action in open circuit)

    Engine capacity of 37 kW

    Our milled material is less than five microns and 30% of this material is less then one micron in size.

    Surface area by BET 5.1 m2/gr! (continuous action)

    Feed fraction 5mm!! -- Which means unmatched down scale factor.
    Energy consumption for quartz sand for d97 is:
    5 microns max .190 kWh/t
    10 microns max. 135 kWh/t
    20 microns max. 89 kWh/t
    30 microns max. 69 kWh/t

    With improvements in our inferior classifier the energy consumption would be lower.

    We are not aware of a classifier which could efficiently classify large volume d100 4 micron, if we had this classifier then we would have fulfilled requirement indicators of d50 0.75 micron immediately & probably better results with some effort.

    Hardness up to 10 by Moh scale,
    The material is mechanically activated.
    Our future project is to convert our mill from continuous action to periodic one, than we would have end product in the sub- micron range.

    Our technology attracted interest among significant equipment manufacturers & we had been visited & are scheduled for more demonstrations. (I could mention Outokumpu, Netzsch, Eirich, Metso Minerals,Hosokawa Alpine)

    If you would like further information on my company and our technology,
    please send a short note and I will send further data for your review.

    Thank you very much and hope to hear from you soon.

    Ezry Akkerman
    Marketing Director
    Cyclotec Oy


    cyclotec@gmail.com

    http://www.cyclotec.net
    Last edited by ezryakkerman; 27th December 2008 at 13:46.

  9. #9
    Rosen Guest
    Your ball mill can be filled with approximately 4.5 tons of pepples. This will generate a transferable grinding energy of approximately 33 kW (installed 55 kW). The specific grinding energy for Dolomite from 300 mesh down to 10 micron is approximately 60 kWh/t. That means your mill will produce 0.5 t/h. For such case an Alpine Turboplex Classifier 400 ATP is absolutely sufficient.

    For more information please contact
    Robert Rosen
    r.rosen@alpine.hosokawa.com

  10. #10
    nowroz_ahmed Guest

    Subject: International tender for import of Grinding Ball, 90mm ( 70MT), 50mm( 30MT)

    Kindly let us know your interest to participate for the above tender. After receiving your positive response, we will send you tender documents.

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