Ball Mill Overview
ball millBall mill is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc, and the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material.
Ball Mill Parts
Ball Mill is made up of feeding part, discharging part, gyre part, transmission part (reducer, small transmission gear, motor, and electrical controller) and so on.
Ball Mill Application
Ball mill is mainly used for grinding materials in such production industries as cement, silicate product, new building materials, corhart, chemical engineering, nonferrous and black metal, mineral processing, glass and ceramic, etc. Ball mill is used for grinding various ore and other grindable materials dry or wet.
Ball Mill Main Features and Benefits
  1. The hollow axis adopts the cast steel, and the lining can be replaced. The big rotary gear is forged from cast rolling gears.
  2. The barrel body is inlaid with wearable plates,so ball mill has long serve life.
  3. The ball mill runs steadily and efficiently.
Ball Mill Working Principle
This ball mill is horizontal type and tubular running device, has two warehouses. This machine is grid type and runs along the outside gear. The material enters spirally and evenly the first warehouse of the milling machine along the input material hollow axis by input material device. In this warehouse , there is a ladder scaleboard or ripple scaleboard, and different specification steel balls are installed on the scaleboard. When the barrel body rotates ball mill produces centrifugal force ,at the same time , the steel ball is carried to some height and falls to make the material grinding and striking. After grinded coarsely in the first warehouse, the material then enters into the second warehousefor regrinding with the steel ball and scaleboard. In the end, the powder is discharged by output material board andthe end products are completed.
Ball Mill Installation Instructions
The quality of ball mil installation is the key to whether the ball mill work normally. Although there are many types of ball mill, the method and sequence of ball mill installation is the same. Install in on the reinforced concrete whose weight is 2.5 to 3 time as ball mill. the reinforced concrete should be based on a solid soil, and with at least 4 ~ 50 mm distance away from plant.When install ball mill, first install the main bearing. Then install cylinder division of ball mill. According to the specific conditions, you can install it as several parts. Final install transmission components division. You must install it as requestments of ball mill.
Ball Mill Specifications
Model Speed of bucket(r/min) Weight of ball Size of feed opening
(mm)		 Size of outputting feed
(mm)		 Production
(t/h)		 Power
(kw)		 Weight
(t)
Ф1830×3000 24 11 ≤25 0.075-0.4 4-10 180 28
Ф1830×6400 24 23 ≤25 0.075-0.4 6.5-15 210 34
Ф1830×7000 24 25 ≤25 0.075-0.4 7.5-17 245 36
Ф2200×5500 21 30 ≤25 0.075-0.4 10-22 370 48.5
Ф2200×6500 21 30 ≤25 0.075-0.4 14-26 280 52.8
Ф2200×7500 21 33 ≤25 0.075-0.4 16-29 475 56
Ф2400×3000 21.6 25.8 ≤25 0.075-0.4 7.8-18 245 59.2

Note: This specification is just reference, any changes are subject to the ball mill products.

Ball Mill Operate Routine
  1. Before the ball mills start,check whether erery part of ball mills normal, whether the connecting bolts loose,whether the lubrication of lubrication points normal,whether the driving device reliable,whether protective equipment intact,whether connection of motor carbon fine.
  2. Check whether there is barrier surrounding the ball mills. Forbit persons standing near ball mills when it is starting.
  3. Press start button to start the motor and notice the change of electric current.The ball mills' continuous starting don't surpass two times and the first starting and the second starting should separate for more than 5 minutes.If it must be thirdly started, it should be check by electrician and fitter before it is started.
  4. The ball mill don't start with other equipment at the same time avoiding the high current.
  5. Feed water ,feed ore and add steel ball to the ball mill must follow the operate routine.Overload and preoperation are both bad for the ball mill.
  6. When the ball mill is running , it should be checked whether the barrel body leak,where the feeding water or ore is normal,where the electric current and voltage is normal.If there is some proble,it should be handled quickly.
  7. When the ball mill is running ,it should be checked whether the bearing or the oil ring is lubricated and whether the temperature of bearing is normal.