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Overflow Ball Mill


Overflow ball mill is generally used for grinding materials to the particle size of 20 to 75 microns.
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FEATURES

Application of Overflow Ball Mill

Overflow ball mill is generally used for grinding materials to the particle size of 20 to 75 microns. To achieve a reasonable efficiency, this machine must be operated in a closed system. Various classifiers such as screens, spiral classifiers, cyclones and air classifiers are used for classifying the materials discharged from ball mills. There are two ways of grinding: dry process and wet process. It can be divided into tabular type and flowing type according to different discharging forms.

Overflow Ball Mill

Structure of Overflow Ball Mill

The machine is composed of feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbing process and the drum is equipped with wear-resistant liner which has good wear-resistance. The machine is with stable and reliable working condition. 

Working Principle of Overflow Ball Mill

This machine is a skeleton pattern ball mill with horizontal cylindrical turning gear, driven by outer gear and two hoppers. The material goes to the first hopper after the spiraling by the quill shaft from the feeding equipment. The hopper has ladder sheathing or corrugated sheathing with steel balls inside, which will fall under the effect of centrifugal force by barrel and grind material. After the kibbling in the first hopper, by monolayer partition panel, the material will enter the second hopper, which has plane scale board with steel ball inside to grind material. The powder material will be discharged from the grid plate to finish the grinding.

PARAMETER

Technical Parameters of Overflow Ball Mill

Model Shell rotation speed(r/min) Ball load(t) Feeding size(mm) Discharging size(mm) Capacity Motor power(kw)(kw) Weight(t)
(t/h)
Ø900*1800 36--38 1.5 ≤20 0.075-0.89 0.65-2 18.5 5.5
Ø900*3000 36 2.7 ≤20 0.075-0.89 1.1-3.5 22 6.7
Ø1200*2400 36 3 ≤25 0.075-0.6 1.5-4.8 30 12
Ø1200*3000 36 3.5 ≤25 0.074-0.4 1.6-5 37 12.8
Ø1200*4500 32.4 5 ≤25 0.074-0.4 1.6-5.8 55 13.8
Ø1500*3000 29.7 7.5 ≤25 0.074-0.4 2-5 75 16.8
Ø1500*4500 27 11 ≤25 0.074-0.4 3-6 110 21
Ø1500*5700 28 12 ≤25 0.074-0.4 3.5-6 130 25.8
Ø1830*3000 25.4 11 ≤25 0.074-0.4 4-10 130 29
Ø1830*4500 25.4 15 ≤25 0.074-0.4 4.5-12 155 35.5
Ø1830*6400 24.1 21 ≤25 0.074-0.4 6.5-15 210 43
Ø1830*7000 24.1 23 ≤25 0.074-0.4 7.5-17 245 43.8
Ø2100*3000 23.7 15 ≤25 0.074-0.4 6.5-36 155 34.8
Ø2100*4500 23.7 24 ≤25 0.074-0.4 8-43 245 38
Ø2100*7000 23.7 26 ≤25 0.074-0.4 8-48 280 56.6
Ø2200*4500 21.5 27 ≤25 0.074-0.4 9-45 280 51.8
Ø2200*6500 21.7 35 ≤25 0.074-0.4 14-26 380 60
Ø2200*7000 21.7 35 ≤25 0.074-0.4 15-28 380 62
Ø2200*7500 21.7 35 ≤25 0.074-0.4 15-30 380 64.8
Ø2400*3000 21 23 ≤25 0.074-0.4 7-50 245 54
Ø2400*4500 21 30 ≤25 0.074-0.4 8.5-60 320 65
Ø2700*4000 20.7 40 ≤25 0.074-0.4 12-80 380 94
Ø2700*4500 20.7 48 ≤25 0.074-0.4 12-90 480 102
Ø3200*4500 18 65 ≤25 0.074-0.4 ----- 800 137
Ø3600*4500 17 90 ≤25 0.074-0.4 ----- 850 158
Ø3600*6000 17 110 ≤25 0.074-0.4 ----- 1250 175

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