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Introduction of Rod Mill Working Principle

2016-04-22 12:22:10   XinHai    Views (1182)
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Rod mill is a device used for grinding ore, according to different conditions, rod mill does different grinding work, generally speaking, and the rod mill is particularly suitable for coarse grinding. The application of rod mill is wide, prepared in coal chemical industry of coal-water slurry, quartz sand, silica sand, sand aerated, tungsten ore, potassium and sodium feldspar, bauxite and other industries are widely used. Of the refractory, chemical, metallurgy, glass and other industries and the grinding uniformity of finished products demand for the higher degree of grinding operation are generally choosing rod mill. So what’s the working principle of rod mill?

The working principle of rod mill: when the rod mill work, the motor through the speed reducer and the surrounding big gear reduction drive or by low speed synchronous motor directly through the surrounding big gear reducer drive, the cylinder does rotary motion. There are proper grinding medium steel bars at inner cylinder. Under the combined action of the centrifugal and frictional force, grinding media was brought rose to a certain height, dropping or leaking drop falling state. Raw materials feed into the cylinder and crushed by the grinding media, and in the overflow and continuous force of mineral products are discharged out of the machine to continue the next stage of processing operations.

According to rod mill working principle, rod mill has advantages like 1. The discharge size is uniformity and high yield. 2. The types are various and reasonable choice depends on the material. 3. Rod mill has dry and wet two forms and needs according to their actual situation to choose. The working principle of rod mill makes rod mill can be used in many large industries or production line. To avoid harm brought by the crushing operation, gravity separation and magnetic separation plant of tungsten, tin and other rare metal ore often choose rod mill to grinding. When it is used for grinding ore process, if the first paragraph is from the 20-6mm grinding to 3 ~ 1mm, the rod mill for first section grinding ore equipment can reach large production capacity, high efficiency; while it is used for the second stage fine grinding, rod mill productivity and efficiency will be lower than that of the ball mill. Sometimes the rod mill can replace the short head cone crusher for crushing. When process not hard ore and need to grind the ore from 19-25mm to 6-10mm, the closed configuration of the rod mill and screen is simple and low-cost, and can make the broken open shop dust is simplified. For hard ore, more economical method is to use short head cone crusher and screen to make a closed circuit. Choosing ball mill or rod mill when design depends on specific situation.

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