The ball mill liners is used to protect the cylinder from the direct impact and friction of the grinding body and the material. At the same time, different forms of liner can be used to adjust the movement state of the grinding body to enhance the grinding effect of the grinding body on the material. , Help to improve the grinding efficiency of the mill, increase the output, and reduce the metal consumption.
Mill, vertical ball mill, lattice ball mill, overflow ball mill, tubular ball mill, rod mill, cement ball mill, etc.
High manganese steel, new composite materials, modified high manganese steel, new high manganese steel, ultra high manganese steel, super high manganese steel, modified high manganese steel, multi-element alloy steel, high (low) chromium cast iron, etc.
Ball mill is the key equipment for crushing materials after crushing. It is 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. It is used for dry or wet grinding of various ores and other grindable materials.
Ball mill liners are generally divided into five categories according to their use parts: cylinder liner, grinding head liner, partition board, grinding grate board, manhole liner and special liner. Special liner refers to components with special functions, such as retaining ring, ring, etc., although it is no longer a protective part in the traditional sense, we still call it a liner, and are classified as a special liner. class.
The liner material has developed from early high manganese steel, nickel hard cast iron, ordinary white cast iron, etc. to today's several series of hundreds of varieties, mainly alloy steel, high and low chromium cast iron, austempered ductile iron and other materials. A flourishing situation in China.
Its shape is no longer a simple plate shape, corner spiral, rounded square liner, groove liner, its many forms and complex shapes, there are too many to mention. So in production practice, the specific material and structure of the lining board should be selected according to the specific working conditions.
In dual-medium quenching, the alloy steel liner has a scientific and reasonable alloy element formula, so that the liner has good physical and chemical properties. The hardness is above HRC45-55, the impact toughness value is above 25J, and the service life is more than twice that of high manganese steel. Able to withstand huge impacts. The surface shape of the liner can be maintained for a long time during work to ensure that the mill can increase the output by more than 5%.
During the quenching process of the liner, the special dual-medium quenching agent with good thermal stability is used as the medium to make the product achieve the combination of high strength, high hardness and high toughness to meet the technical requirements of wear resistance
After the advanced dual-medium quenching process, it has the characteristics of high quenching hardness and high toughness value, so that the liner has good wear resistance. Compared with the high-manganese steel liner, the medium-alloy dual-medium quenching medium alloy steel ball mill lining The board showed an excellent cost performance. It can adapt to mine wet grinding, dry grinding, mixed grinding, etc.
|Model||Rotating speed of cylinder（r/min）||Ball load（t）||Feed size（mm）||Discharge size（mm）||output（t/h）||Motor Power（kw）||Machine weight（T）|
The above only lists some models of ball mills.
Liner of ball mill The domestic high-manganese steel is gradually replaced by medium-alloy steel liner, but with the continuous application of medium-alloy steel liner in ball mill liner, it has gradually replaced manganese steel and other liners to become the mainstream of market development. The cylinder liner not only protects the cylinder, but also has an impact on the movement of the grinding body. In order to meet the requirements of various working conditions (crushing or fine grinding), the shape of the liner is also different. When pulverization is the main method, the liner is required to have a strong ability to push the grinding body, and at the same time, the liner should have good impact resistance. When fine grinding is the main method, the protrusion of the liner is relatively small. The pushing effect is weak, the impact is small, and the grinding effect is strong, which requires the liner to have good wear resistance
The added weight of the steel ball is based on the quality of the steel ball. The quality of the steel ball determines the amount of ore added per ton. It is best to use a new type of wear-resistant steel ball; chromium alloy steel ball is the main component of the wear-resistant rigid ball , Anti-oxidation performance and high sulfur resistance, diesel fuel, seawater corrosion performance is high, and the strength density is much higher than that of general metal.
EB China is a professional manufacturer of high-quality ball mill liners, focusing on wear-resistant ball mill liners for 20 years. The ball mill liners produced by the company are made of high manganese steel, high chromium cast iron, wear-resistant alloy steel and other materials. The material is more wear-resistant and has a longer life!
Eternal Bliss Alloy Casting & Forging Co, Ltd.
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