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  • VM - Vertical Grinding Mill

    INPUT SIZE :  38-50mm (Coal Mill)
    OUTPUT SIZE :  80-325 mesh
    PRODUCTION CAPACITY : Up to 128TPH(ore mill), up to 50TPH (coal mill)

    PROCESSED MATERIALS :
    Pyrophillite, coal, calcite, barite, limestone, lime powder, marble, silica, talc, kaoline, gold ore, ferrite, clay, slag, marble,and so on.

    APPLICATIONS :
    Glass fiber industry, coal industry, chemical industry, and for large scale powder making and non mental mine industry.

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    • INTRODUCTION
    • FEATURES
    • TECHNICAL SPECIFICATIONS

    Vertical mill is a large grinding equipment based on years concentrated design and development by introducing advanced European technology and years design and manufacturing experience and market demand of Kefid to solve the problem of low production capacity and high power consumption of traditional grinding mills. Vertical mills have adopted reasonable and reliable structure design acting in concert with advanced process which is integrated by drying, grinding, powder separating and elevating, which is able to meet clients’ need well with internationally advanced technological and economical indexes and can be adopted in cement, hydroelectric construction, metallurgy, chemical, and non-metal ore grinding, especially in large scale grinding or various ores of lump and grain shape into powder.

    INTRODUCTION

    Vertical mill is a large grinding equipment based on years concentrated design and development by introducing advanced European technology and years design and manufacturing experience and market demand of Kefid to solve the problem of low production capacity and high power consumption of traditional grinding mills. Vertical mills have adopted reasonable and reliable structure design acting in concert with advanced process which is integrated by drying, grinding, powder separating and elevating, which is able to meet clients’ need well with internationally advanced technological and economical indexes and can be adopted in cement, hydroelectric construction, metallurgy, chemical, and non-metal ore grinding, especially in large scale grinding or various ores of lump and grain shape into powder.

    FEATURES

    1. Low operation cost
    (1) High grinding efficiency. Vertical mills grind material through grinding between grinding rollers and material bed with 40%-50% less power consumption comparing with ball mill which will be more obvious while moisture is increasing. 
    (2) Less metal wear. Liner and rollers are made of special material which enables longer life less operation cost and higher utilization.
    (3) Outer loop device is equipped to reduce power consumption further.
    (4) Larger feed material size which can be 5% of roller diameter generally ranges from 40 to 100mm. And by using medium and large models there will be no need to use secondary crushing system.  
    2. Lower Construction Cost
    (1) Simple process. Land occupation and construction area can be 50% less comparing with ball mill system reducing construction cost by about 70%.
    (2) Vertical mill is an integration of crushing drying grinding separating and conveying which is simple in system compact in distribution and can be distributed in open air which will cause less construction expense.
    3. Simple and stable operation:
    (1) Automatic control system is equipped to enable long distance control and is simple in operation.
    (2) Special device to avoid direct contact of rollers and disc liner has been equipped to avoid fragmentation severe vibration.
    4. Powerful drying ability. Vertical mills adopts air stream in material conveying. During grinding of material with higher moisture wind temperature can be controlled so as to repair final products to meet moisture requirements which is up to 12% to 15% in vertical mill which can only be 3-4% in drying ball mill.
    5. Stable products quality and even products shape. Material will stay only a short period in the mill making inspection and control of product grain size and chemical composition easier and quality of products more stable.
    6. Easy in maintenance. Maintenance can be completed by maintaining oil cylinder turning moving arms rollers liner quickly.
    7. Environmental friendly and low in power consumption. There will be light vibration small noise small amount dust clean operating environment which can meet environment protection requirement well.

    TECHNICAL SPECIFICATIONS
    ContentsData//Model VM130k VM150k VM170k VM190k VM220k
    Capacity(t/h) 10~28 13~38 18~48 23~68 36~105
    Mainframe power(KW) 200 280 400 500 800
    Overall dimension Length (mm) 5520 6550 7170 7580 7920
    Width (mm) 2500 3070 3460 3320 4870
    Height (mm) 7060 7560 8300 8960 12280
    Weight(t)   70 90 105 180

    Notes:
    1. Material should be with hardness less than 7 in Mohs'.
    2. Hot air is only necessary if outlet moisture is required to be less than inlet moisture.
    3.When grinding material is difficult to grind please use the largest power.

    Coal Mill:

    Contentarameter//Model  VM130M VM150M VM170M VM190M VM220M
    Wheel Diameter(mm) 1300 1500 1700 1900 2200
    Quantity of roller(piece) 2 2 2 2 2
    Capacity(t/h) 10~17 16~22 20~30 26~40 35~50
    Coal fineness(R0.08) 5~20% 5~20% 5~20% 5~20% 5~20%
    Coal moisture <1% <1% <1% <1% <1%
    Input size D80(mm) <10 <10 <10 <10 <10
    Max.input size(mm) <38 <40 <42 <45 <50
    Input moisture <15% <15% <15% <15% <15%
    Inlet air temperature(℃) <350 <350 <350 <350 <350
    Outlet air temperature(℃) 75~95 75~95 75~95 75~95 75~95
    Hardgrove index of raw coal(HGI) >55 >55 >55 >55 >55
    Mainframe power(KW) 185 250 315 400 500
    Overall dimension Length (mm) 5520 4200 4700 7580 7670
    Width( mm) 2500 3900 4500 3320 4660
    Height (mm) 7060 7100 8300 8960 11280
    Weight(t) 46 68 88 100 165

    Slag Mill:

    ContentDate//Model VM130N VM150N VM170N VM190N VM220N
    Wheel Diameter(mm) 1300 1500 1700 1900 2200
    Quantity of roller (number) 2 2 2 2 2
    Capacity(t/h) 5~14 7~20 9~27 12~30 18~55
    Output fineness Micron 170~45 170~45 170~45 170~45 170~45
    Mesh 80~325 80~325 80~325 80~325 80~325
    Product moisture ≤1% ≤1% ≤1% ≤1% ≤1%
    Input size D80(mm) <10 <10 <10 <10 <10
    Max.input size(mm) <38 <40 <42 <45 <50
    Input moisture(no need to dry) <4% <4% <4% <4% <4%
    Input moisture(need to dry) 4~15% 4~15% 4~15% 4~15% 4~15%
    Inlet air temperature(℃) <350 <350 <350 <350 <350
    Outlet air temperature(℃) 70~95 70~95 70~95 70~95 70~95
    Mainframe power(KW) 200 280 400 500 900
    Overall dimension Length(mm) 5520 6550 7170 7580 7920
    Width(mm) 2500 3070 3460 3320 4870
    Height(mm) 7060 7560 8300 8960 12280
    Weight(t) 49 72 94 110 170

    Note: Any change of VM Vertical Mill technical data shall not be advised additionally.

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    such as: Output size 0-10, 10-15, 15-20mm

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