Ball Mill

Ball Mill Used For Mineral Ore Processing

Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits. According to the need of customers, ball mill can be either wet or dry designs. Ball mills have been designed in standard sizes of the final products between 0.074 mm and 0.4 mm in diameter. Service online

Detailed introduction

Technical features and advantages

  • Suitable for grinding material with high hardness;
  • The shape of the final products is circular;
  • No pollution for the powder with ceramic ball;
  • Stable performance Easy installation;
  • The capacity and fineness can be adjusted by adjusting the diameter of the balls.

Working principles and applications

SBM ball mill can be used for processing various materials, especially for mineral ores, such as gold ore, iron ore, dolomite, and calcite and so on.

How to choose the ball mill equipments

Recognizing this situation, SBM Mining Machinery Co. Ltd attempts more hard to make several merchandise collection and meanwhile jaw crusher could make wonderful enhancement also as in-depth processing of every merchandise thoroughly. Let me choose the ball mill equipments as an illustration. We use chinaware as opposed to common elements to produce it we impact the sort within the device pieces like turning spoon mind joint feeder into drum-formed feeder. We generate various service and products to fulfill our customers' need.

All of the earlier pointed out enhancement would be to far far better adapt towards pe jaw crusher the varied item generation needs, to enhance efficiency, to lessen energy use, to raise the restoration rat, and ultimately to greater guard surroundings.

The ball mill machines should possess a really great far better anticipated future. Even so, this wants considerably more know-how who devote for that HST cone crusher examine of ball mill underneath the countrywide context. It is not whatsoever merely a blessing working with the situation also as favorable for that survival and progress in the organization.

Technical data

Model Rotate Speed (r/min) Grinding Media Weight (T) Max.Feeding Size(mm) Discharge Size (mm) Output(t/h) Motor Power (KW)
Ф900×1800 36~38 1.5 ≤20 0.075-0.89 0.65-2 18.5
Ф900×3000 36 2.7 ≤20 0.075-0.89 1.1-3.5 22
Ф1200×2400 36 3 ≤25 0.075-0.6 1.5-4.8 30
Ф1200×3000 36 3.5 ≤25 0.074-0.4 1.6-5 37
Ф1200×4500 32.4 5 ≤25 0.074-0.4 1.6-5.8 55
Ф1500×3000 29.7 7.5 ≤25 0.074-0.4 2-5 75
Ф1500×4500 27 11 ≤25 0.074-0.4 3-6 110
Ф1500×5700 28 12 ≤25 0.074-0.4 3.5-6 130
Ф1830×3000 25.4 11 ≤25 0.074-0.4 4-10 130
Ф1830×4500 25.4 15 ≤25 0.074-0.4 4.5-12 155
Ф1830×6400 24.1 21 ≤25 0.074-0.4 6.5-15 210
Ф1830×7000 24.1 23 ≤25 0.074-0.4 7.5-17 245
Ф2100×3000 23.7 15 ≤25 0.074-0.4 6.5-36 155
Ф2100×4500 23.7 24 ≤25 0.074-0.4 8-43 245
Ф2100×7000 23.7 26 ≤25 0.074-0.4 8-48 280
Ф2200×4500 21.5 27 ≤25 0.074-0.4 9-45 280
Ф2200×6500 21.7 35 ≤25 0.074-0.4 14-26 380
Ф2200×7000 21.7 35 ≤25 0.074-0.4 15-28 380
Ф2200×7500 21.7 35 ≤25 0.074-0.4 15-30 380
Ф2400×3000 21 23 ≤25 0.074-0.4 7-50 245
Ф2400×4500 21 30 ≤25 0.074-0.4 8.5-60 320
Ф2700×4000 20.7 40 ≤25 0.074-0.4 12-80 400
Ф2700×4500 20.7 48 ≤25 0.074-0.4 12-90 430
Ф3200×4500 18 65 ≤25 0.074-0.4 According to the process condition 800

Approach to Significant Temperature of Ball Mill

In the procedure of ball mill, the prevent might cause a large temperature change about the its entire body, resulting in significant thermal pressure and thermal deformation, and often even trigger mechanical harm to the ball mill, including the geometric deformation with the liner. Additionally, the warmth of the mill transmitting to your key bearing can boost the temperature of principal bearing.

The grinding skill of ball mill will lower in accord with the raising temperature. Within the grinding spot with larger fineness, the little particles inside of the rub versus each other to create an electrostatic adsorption phenomenon, in combination with uniting with one another, they will be more adsorbed on grinding bodies of it, which could variety a so-called buffer layer which may substantially minimize the grinding influence of ball mill; and also the higher the temperature is, the greater severe the grinding impact will be.

Ball Mill Structure

The structure of the ball mill

Ball mill due to specifications, discharge and transmission methods are divided into different types, but the main structure is basically the same, the ball mill mainly by the cylindrical cylinder, liner, compartment board (multi-warehouse mill only) , The main bearing, into the material device and transmission system and other components.

The ball mill is one of the main working parts of the ball mill. In addition to the cylindrical body to withstand the static load of the grinding body, but also by the impact of the grinding body, and the cylinder is rotating, so the cylinder is produced alternating stress. Therefore, it must have sufficient strength and stiffness. This requires the manufacture of cylindrical metal material strength is higher, better plastic, with good mechanical properties and process performance in order to ensure the safe operation of the mill cylinder.

The material used to make the cylinder is generally made of ordinary structural steel. The strength, plasticity and weldability of this kind of material can meet the requirements. With the development of the industry, the mill capacity (production) is also large-scale development. The cylinder of the large mill is made of 16Mn steel. Its elastic strength is about 50% higher than Q235, corrosion resistance higher than Q235 50%, impact toughness (especially when low temperature) much higher than Q235. And 16Mn also has good cutting, solderability, wear resistance and fatigue resistance. So 16Mn is a very suitable steel. The length of the cylinder is not the same as the length of the cylinder when the mill is running. This is due to the different temperature of the cylinder caused by thermal expansion and contraction caused. Therefore, in the design, installation and maintenance must take into account the cylinder of the thermal expansion and contraction characteristics.

In general, the discharge end of the mill is close to the transmission. In order to ensure the normal meshing of the gears, it is not allowed to have any axial movement at the discharge end, so it is a structure that adapts to the axial heat distortion at the feed end.

Axial thermal deformation of the cylinder There are two ways to consider the structure of the ball mill: one is to use the hollow journal clearance between the shoulder and bearing to consider the gap. The other is in the bearing and the floor between the horizontal installation of several steel rods, when the cylinder thermal expansion and contraction, the feed side of the main bearing base can be moved along the roller.

Each cylinder in the cylinder should be opened with a grinding door (also known as manhole). The role of the grinding door is to change the lining plate, compartment board, filling or pouring grinding body and stop grinding check the situation inside the mill.

The main bearing of the ball mill is the most commonly used sliding bearing, its diameter is very large, but the length is very short. The bearing is cast with babbitt. The difference with the general sliding bearing is that only the lower half of the bearing. The whole bearing in addition to the bearing with Pasteurite casting, the rest are made of cast iron. As the ball mill span and load is very large, will occur a certain degree of deflection, and manufacturing and assembly of the error is also difficult to ensure accurate coaxial, so the bearing made of automatic adjustment type, between the spherical tile and spherical tile With the center of the center of rotation for a slight relative movement, so that the load on the bearing on the load distribution evenly.

There is also a locating pin between the spherical tile and the spherical tile to limit the range of movement of the spherical tile. In the installation, you can use the screw to adjust the location of the spherical tile seat. Also used wedge adjustment.

The main bearing is a key component of the ball mill, for its lubrication problem must pay full attention to the general use of thin oil centralized circulation lubrication, minicomputers are also used oil ring lubrication, oil ring oil lubrication or wool lubrication.

Inquiry

Simply complete the form below, click submit, you will get the price list and a SBM representative will contact you within one business day. Please also feel free to contact us by email or phone. ( * Denotes a required field).