Introduction to Grid Ball Mill

Grid ball mill is a key equipment for crushing materials after they have been crushed. Ball mills are widely used in the production industries of cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, and glass ceramics, for dry or wet grinding of various ores and other grindable materials. Grid ball mill is used to grind various ores and other materials, and is widely used in various sectors of the national economy such as mineral processing, construction, and chemical industry.
The grid type ball mill is more effective for fine grinding than coarse grinding. When fine grinding, the feeding particle size should generally not exceed 65mm, and the more suitable feeding particle size is below 6mm. Ball mills are widely used in metal and non-metal mines, building materials, and other industrial sectors for powder and ink processing of various ores and camouflage operations.

Grid type ball mill structure

The grid ball mill is mainly composed of a feeding device, main bearings, lining plates, cylinder bodies, manholes, discharge grid plates, end cover plates, large gears, couplings, transmission devices, etc.
1. The feeding device consists of a feeding chute and a feeding spiral tube. The feeding chute is equipped with a lining plate, which extends the service life of the feeding device;
2. The end cap and hollow shaft are divided into two parts and combined together. The end cap is cut from high-quality carbon steel, and the hollow shaft is cast to ensure its safe and reliable operation;
3. The hollow shaft neck at the feeding end is equipped with a reserved gap, which can reduce the errors caused by the expansion and installation of the cylinder due to temperature differences, and ensure the correct meshing of the gears;
4. The combination design of the inner lining plate of the grid type ball mill adopts different lining plate structures for different stages of the grinding process, greatly improving the grinding efficiency;
5. The main bearing adopts sliding bearings, which have good strength, plasticity, polymerization, anti friction, wear resistance, lubrication and heat transfer properties, and are easy to replace.

Working principle of grid ball mill

This grid type ball mill is a horizontal cylindrical rotating device, with outer gear transmission, two compartments, and a grid type ball mill. The material is uniformly fed into the first compartment of the mill through the feeding device and the hollow shaft screw. The compartment is equipped with stepped or corrugated lining plates and contains steel balls of different specifications. The rotation of the cylinder generates centrifugal force, which brings the steel balls to a certain height and then drops them, causing heavy impact and grinding on the material. After the material reaches rough grinding in the first warehouse, it enters the second warehouse through a single-layer partition plate. The warehouse is lined with a flat lining plate and contains steel balls for further grinding of the material. The powdered material is discharged through the discharge grate to complete the grinding operation.

Advantages of grid ball mill

1、 Good grinding effect
The discharge end of the grid type grinding machine has a grid plate with many small holes to discharge the slurry, and the grid plate of the grid type ball mill has an "isolation" effect. The impact of the medium ball will be significantly enhanced, and the crushing effect on the material will be stronger, achieving a very high grinding effect.
2、 High work efficiency
The grid type ball mill has unique grid plates and fan-shaped chambers, which can achieve low-level forced ore discharge. This means that qualified particles can be discharged in a timely manner during the ore discharge process, without staying in the ball mill for too long and affecting the grinding of other materials. Therefore, the phenomenon of over grinding is rare, and the grinding speed is fast and efficient.
3、 Easy to start
The main bearing of the lattice ball mill adopts a large-diameter double row self-aligning rod bearing, which has low friction and energy consumption. It avoids the disadvantages of some old-fashioned sliding bearings and makes the ball mill easier to start.
4、 Good lining performance
Compared with high manganese steel liners on the market, medium alloy dual medium quenched medium alloy steel ball mill liners have shown excellent cost-effectiveness and can adapt to wet grinding, dry grinding, mixed grinding, etc. of various mining rocks.
5、 Gears are durable and long-lasting
The accessory adopts a variable displacement gear, which can eliminate the root cutting phenomenon, greatly strengthen the gear with weaker bending strength, and increase the bending strength of the gear teeth by more than twice.
6、 Good wear resistance
The hollow shaft is made of cast steel and the inner lining can be replaced. The rotating large gear is processed by casting gear hobbing, and the cylinder body is embedded with wear-resistant lining plate, which has good wear resistance.

Technical parameters of grid ball mill

Note: The equipment model parameters are constantly being improved. If you cannot find the required model in the parameter table, you can contact us directly. Our technicians will configure the equipment that is more suitable for your production needs and site requirements according to your requirements.