With the rapid development of mineral processing industry, the ball mill industry is booming day by day. Nowadays, there are many manufacturers of ball mills on the market, and the prices are far from each other. That's what the so-called "one price for one goods" means. Take large and small ball mills for example. Apart from their morphological differences, they also have great differences in the selection of lining materials, so the prices of large ball mills are relatively higher.
Liner is a common consumption part of energy-saving ball mill, and its usage is very large. The liner quality of ball mill has a direct impact on grinding production cost and economic benefits of concentrator. Especially for large ball mills, it is required that the lining plate has good wear resistance, and the hardness and toughness must cooperate with each other. In order to meet the production requirements of large-scale ball mills, Hongfeng ball mill experts have made a lot of efforts to improve the wear resistance of lining plates, and achieved certain results.
In early concentrator, high manganese steel was generally used as lining material of large ball mill. However, due to the limitation of working conditions of lining plate, the work hardening characteristics of high manganese steel can not be fully exerted, so the wear resistance of lining plate made of high manganese steel is not ideal. The available air-cooled bainitic steel, low alloy steel, composite materials and rubber materials.
Air-cooled bainite steel is a new type of wear-resistant material developed in recent years. It has a series of advantages as lining plate steel for manufacturing large-scale ball mills, such as low cost, simple production process and better wear resistance than high manganese steel. However, it is only suitable for lining boards with smaller size, generally less than 200kg in weight and less than 70 mm in thickness. For liners with effective thickness greater than 100 mm and weight more than 600kg, it is difficult to obtain sufficient bainite and martensite structure by air cooling, and the obtained structure is mainly pearlite, which affects the wear resistance.
Rubber material has been used in lining plate of energy-saving ball mill for a certain period of time. Because of its different characteristics from ferrous metal, it has excellent wear resistance and has been tested in production practice. However, it is more suitable for manufacturing the end lining plates of the ore inlet and outlet of the ball mill, while manufacturing the barrel lining plate will reduce the ore quantity of the ball mill, especially the large-scale ball mill by more than 30%, reduce the production efficiency and increase the energy consumption, and it is expensive, which limits its popularization and application. Composite lining board is also a new material in recent years, but its technology needs to be improved, so it has not been widely promoted.
Therefore, we take medium carbon low alloy steel liner as the research direction. Through the experiment of simulating the actual thickness of lining board, on the premise of not adding precious alloy, the suitable composition is designed to make the alloy have enough hardenability and hardening capacity. Through proper heat treatment, the hardness and toughness can be well matched, and it is applied to the lining board. The process is simple and feasible, and the lining plate has excellent wear resistance.
Xinxiang Hongfeng Mine Equipment Co., Ltd. specializes in casting ball mill brand. Through the concerted efforts and persistent working attitude of Hongfeng mining experts, our company has become the largest manufacturing enterprise with the highest technological content, the largest brand awareness, the strongest financial strength and the largest scale in the ball mill industry.