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| Usage of Alumina ceramic ball, | |
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 1.High hardness,fine scuff-resistance,pollution-free,improving stability of raw material,particularly ceramic glaze.
Remarks:equivalient weight wear and tear(¡ë)is cerrent professional wear and tear unit.
Items 65Series 75Series 90Series 95Series
Quivalent
weight ¡Ü0.3 ¡Ü0.25 ¡Ü0.2 ¡Ü0.1
wear and
tear(¡ë)
2.Using of alumina ceramic ball and lining brick can remarkably enlarge grinding space,improve grinding efficiency,raise output by 30%-50%;reduce grinding time by 30%-50%;
Take 1.5T ball mill as example:¦µ1800mm¡Á2100mm take following comparison
corundum-quality Ordinary Natural
Charging
Capacity(T) 1.5 1.5 1.4-1.6
Amount of balls
charged 3.6-4.0 2.6-3.0 2.5-3.0
Grin Time(H) 8-12 16-18 20-24
3¡¢Longer service time ,service life of aluminium oxide lining brick is over 3 years. Charge and grading of alumina ball mill£º
During wet grinding process,when charge of ball-stone is up to 55% of net volume of ball mill,the best status can be realized,and the weight of ball body within the ball mill can be estimated with formula£º
G=¦Ðrd¡¤L¡¤25%¡Â1000
Due to the difference of grinding aids of ball mill,the above formula varies.
Generally speaking,the initial ball-stone grading of ball mill is :big ball 30%,intermediate ball 40%,small ball 30%.In fact,it mainly depends on the granularity of materials to be ground,diameter and rotary speed of ball mill should also be considered.Wet ball mill smashes materials mainly through grinding instead of shocking.Therfore the amount of ball -stone should be properly reduced,and the amount of intermediate ball-stone and small ball-stone should be increased so as to guarantee fine grinding effect.Load of ball body relies on type of the ball mill and therefore the above rules are not suitable for dry grinding process.
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