Grate ball mill

Introduction
Grate ball mill primarily consists of six parts, namely, the barrel, feeding part, discharging part, bearing part and lubrication system. Rolling bearings contribute enormous energy saving.
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 essential and widely used for grinding coarse particles.
Working principle
Materials are put in cylinder through the feed opening and then thoroughly grinded, because 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. The discharge opening is equipped with a discharge grate, and the ore pulp horizon of discharge opening is low. These two factors prevent ores from being overly grinded, and iron balls from being dismissed.
Technical parameter
model  Cylinder
diameter(mm) Cylinder
length(mm) Motor 
model Power
(kw) Length
(mm) Width(mm) height(mm) Processing 
capacity(t/h) Maximum
Ball 
volume(t) weight(kg) 
MQGg1212 1200 1200 Y200L2-6 22 3512 2076 1620 0.17～4.1 2.4 9610
MQGg1224 1200 2400 Y280M-8 45 5745 2104 1690 0.2～6.25 4.8 11615
MQGg1240 1200 4000 JR117-8 80 7990 2210 2262 0.34～8.3 7.8 15932
MQGg1515 1500 1500 Y280M-8 45 5740 3075 2280 1.4～4.5 5.5 17125
MQGg1530 1500 3000 JR117-8 80 7253 3075 2280 2.8～9 10 21425
MQGg1545 1500 4500 JR127-8 130 8389 3075 2280 3.5～12.5 12 27346
MQGg2122 2100 2200 JR127-8 132 7420 4225 3083 5～29 16 39350
MQGg2130 2100 3000 JR136-8 180 8220 4225 3083 6.5～36 20 43100
MQGg2136 2100 3600 JR137-8 210 8820 4225 3083 7.5～42 22 45191
MQGg2145 2100 4500 JR138-6 280 10350 3764 3083 10～45 25 52416
MQGg2230 2200 3000 JR137-8 210 8220 3864 3183 7.5～45 23.5 44600
MQGg2430 2400 3000 JR138-8 245 8420 4064 3383 7.2～92 22.5 63600
MQGg2721 2700 2100 JR138-8 245 8300 4786.4 3495 7.2～84 23 75440
MQGg2727 2700 2700 JR137-6 280 8901 4786.4 3495 7～110 29 80092
MQGg2732 2700 3200 JR157-8 320 10509 5150 3620 8～120 32 92071
MQGg2736 2700 3600 JR1512-8 380 10764 5150 3620 12～145 39 95271
MQGg2740 2700 4000 JR1512-8 380 10870 5150 3620 12.5～152 41 98271
MQGg2747 2700 4700 JR1512-8 380 11859 5150 3620 13～170 45 104372
MQGg2836 2800 3600 JR148-8 400 10964 5350 3670 13～160 41 106350
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