Overflow ball mill

Introduction
Overflow ball mill is powder grinding equipment and widely used in ore dressing, building material and chemical industry. It consists of driving part, rotating part, main bearing, feeding and discharging part, lubrication part and electric control part.
Features
1 The transmission machinery of grate ball mill substitutes large-scale double row self-aligning roller bearing for sliding bearing. It is easy to start and saves energy up to 20-30%
2 Adopt groove-type circular lining plate which is instrumental in increasing contact areas of iron balls and ores, and enhances grinding action and ore lifting capacity and decreases energy consumption.
3 Adopt overall frame, which makes it easy for construction and installation.
4 Large discharge opening, high capacity.
5 Equipped with oil-mist lubrication device which guarantees smooth operation of gears.
Application
It is usually used for meeting the requirements for products with higher grinding fineness.
Working principle
Its main component is a cylinder with bigger diameter and smaller length which is revolved by transmitting machinery. Materials are put in cylinder through the feed opening and then thoroughly grinded. The falling course of iron balls and ores can produce huge falling impact and autogenous grinding. The continuous feeding of ores can create considerable pressure to make ores move from feed opening toward discharge opening. Finally, acceptable particles are discharged from the discharge opening. Acceptable ore particles are carried away by water by wet mill, or by air by dry mill. The hollow shaft comprises reciprocal screw impellers that can carry overflowed iron balls and coarse ores back to mill. Energy-saving overflow ball mill has simple structure and higher operation rate. Equipped with rolling bearings, it can considerably save energy.
Technical parameter
model Cylinder
diameter(mm) Cylinder
length(mm) Motor 
model Motor
power(kw) length(mm) Width
(mm) Height
(mm) Processing
capacity(t/h) Maximum
Ball 
Volume
(t) Weight(kg)
MQYg1212 1200 1200 Y200L2-6 22 3512 2076 1620 0.17～4.1 2.4 9210
MQYg1224 1200 2400 Y280M-8 45 5745 2104 1690 0.2～6.25 4.8 12150
MQYg1240 1200 4000 JR117-8 80 7990 2210 2262 0.34～8.3 7.8 15531
MQYg1515 1500 1500 Y280M-8 45 5740 3075 2280 1.4～4.5 5.5 16829
MQYg1530 1500 3000 JR117-8 80 7253 3075 2280 2.8～9 10 21129
MQYg1545 1500 4500 JR127-8 130 8389 3075 2280 3.5～12.5 12 27050
MQYg2122 2100 2200 JR127-8 132 7420 4225 3083 5～29 14 36550
MQYg2130 2100 3000 JR136-8 180 8220 4225 3083 6.5～36 20 40300
MQYg2136 2100 3600 JR137-8 210 8820 4225 3083 7.5～42 22 43112
MQYg2145 2100 4500 JR138-6 280 10350 3764 3083 10～45 23.6 49680
MQYg/2230 2200 3000 JR137-8 210 8220 3864 3183 7.5～45 22.5 41600
MQYg2430 2400 3000 JR138-8 245 8420 4064 3383 7.2～92 22.5 59800
MQYg2721 2700 2100 JR138-8 245 8300 4786.4 3495 7.2～84 23 70463
MQYg2727 2700 2700 JR137-6 280 8901 4786.4 3495 7～110 29 75463
MQYg2732 2700 3200 JR157-8 320 10509 5150 3620 8～120 32 87241
MQYg2736 2700 3600 JR1512-8 380 10764 5150 3620 12～145 39 90080
MQYg2740 2700 4000 JR1512-8 380 10870 5150 3620 12.5～152 41 93441
MQYg2747 2700 4700 JR1512-8 380 11859 5150 3620 13～170 45 99542
MQYg 2836 2800 3600 JR148-8 400 10964 5350 3670 13～160 41 102800
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