Wear-protection alumina ceramic linings
Wear protection alumina ceramic lining is a new non-metal material with low wear, high specific gravity and high hardness. It is made of aluminum oxide (AL2O3) as the main material, which is formed by dry pressing and sintered at a high temperature of 1700°C.
Rockwell hardness of alumina ceramics is HR80-90, and Mohs hardness 9, it is second only to hardness of diamond. Its performance of wear resistance is better than that of steel and stainless steel, it is 260 times that of chrome steel and manganese steel. Under the same working conditions, alumina ceramics can extend the service life of the equipment by more than 10 years.
The density of wear-resistant alumina ceramics is 3.6-3.75g/cm³, and the weight is half that of steel, which can reduce the the equipment load and save energy.
Alumina ceramics with alumina content 92% are widely used.
Technical data of alumina 92% ceramics
Alumina content ≥92%
Density ≥3.6 g/cm3
Rockwell hardness ≥85 HRA
Compressive strength ≥850 Mpa
Fracture toughness KΙC ≥4.8MPa?m1/2
Flexural strength ≥290MPa
Thermal conductivity 20W/m.K
Alumina ceramics can be made into different shapes and sizes according to different operation conditions, such as different sizes of ceramic tiles, ceramic bricks, ceramic blocks, ceramic tubes, ceramic rings,ceramic cylinders, etc.
For alumina ceramics of special shapes and sizes, we can prepare new tooling according to special requirements.
Applications of wear-resistant alumina ceramics
Alumina ceramic liner is a material of good wear resistance and impact resistance. It is an ideal surface anti-wear material widely used in thermal power, iron and steel, smelting, agricultural machinery, coal, mining, chemical, cement, port terminals and other industries, as coal conveying systems, material conveying systems, pulverizing systems, ash discharge systems, and dust removal systems , ore loading and unloading, silos, chutes, pipelines and other wear-resistant layers on all mechanical equipment with great wear. The main function is to effectively resist the impact and abrasion of the equipment and the working surface of the pipeline when the material passes through.
Alumina ceramics have the characteristics of wear resistance, impact resistance, high temperature resistance and easy installation.Its a good choice for industrial maintenance and equipment protection.
Application of wear-resistant alumina ceramic linings in mining industry
Wear-resistant alumina ceramic linings are suitable for wear protection of various mining equipment, such as coal mines, copper ore, tungsten ore, nickel ore, iron ore and other mines, as well as washing plants.
Ore beneficiation is an important process in the mining industry.
Many metal and non-metal parts in many beneficiation equipment are damaged due to continuous work, resulting in a lot of manpower, material and financial losses, and even affecting production efficiency. Therefore, the serious wear and short service life of the beneficiation equipment has caused a serious effect on the ore beneficiation production.
Wear-resistant alumina ceramic linings has become one of the commonly used materials in the ore washing industry due to its superior wear resistance performance. Its properties are high hardness, good wear resistance, corrosion resistance, low density, and certain impact resistance.
Wear-resistant alumina ceramic lining is a product of low production costs and good wear resistance, and are currently widely used in mining, mineral processing, metallurgy and chemical industries.
The easily worn systems and equipment in the ore beneficiation industry include grading and screening equipment such as liquid conveying pipelines and cyclones, the main washing equipment of heavy medium coal preparation plants, heavy media cyclones, various pipelines, chutes, as well as hoppers, slag slurry pumps, silos, chutes, magnetic separators, etc.
Take the heavy-media cyclone as an example, the wear damage of the equipment is mostly caused by erosion and wear, and the service life of easily worn parts is very short. In order to meet the continuous production requirements of the ore washing and concentrator, the alumina ceramic lining is used as an ideal wear-resistant material.
Steel tube lined with alumina ceramic tiles
By glue or welding, steel tube is lined with alumina ceramic tiles. It is mainly used in electric power, metallurgy, coal, cement and other industries, such as large-diameter reducing flue, dust removal pipeline, coal hopper, cement hopper, chutes and other systems.