A Method for Optimizing the Flow Field of a Medium-Speed ​​Mill

Abstract

The invention provides a medium-speed abrasive flow field optimization method. The method comprises the following steps: improving a powder conveying and drying module in a medium-speed mill, and adding a millstone center air inlet, a millstone upside inlet pipe and a central air inlet pipe on the original basis of the powder conveying and drying module, so that the lower flow field in the medium-speed mill can fill all the space in the mill, an original inertia area is completely activated, and the lower flow field in the medium-speed mill is optimized; and taking a dynamic rotary separator as a separator of a powder separation module, and improving the structure of a rotor body of the dynamic rotary separator, so that hot air can form a strong spiral ascending flow field between the rotor body and a mill shell, a strong centrifugal separation effect can be achieved by the formed upper flow field, and the upper flow field in the medium-speed mill is optimized. Compared with a traditional medium-speed mill, the medium-speed mill optimized by the method disclosed by the invention has the advantages that the flow field in the mill is more reasonable, so that the overall performance of the medium-speed mill is substantially improved compared with that of the traditional medium-speed mill.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of powder making, in particular to a medium-speed mill flow field optimization method. [0003] 【Background technique】 [0004] Medium-speed mills are widely used in cement, coal-fired thermal power generation, mining, metal smelting and other industries to grind brittle materials into powder. Although compared with steel ball mills, medium-speed mills have the advantages of small size, high output, and low power consumption, but with the continuous improvement of production technology in various industries and the current continuous improvement in the requirements for energy saving and consumption reduction, the pulverization performance of medium-speed mills There is also an urgent need for improvement, especially the need to increase the output of medium-speed mills and reduce power consumption. [0005] Structure and principle of traditional medium-speed coal mill [0006] Traditional medium-sp...

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Problems solved by technology

However, the formed flow field has not changed substantially, the separation efficiency is still very low, and the system resistance is greater than that of traditional dynamic separators

[0022] Through the above analysis, it can be seen that whether it is a static medium-speed mill, a dynamic medium-speed mill or a combination of dynamic and static medium-speed mills, the separation efficiency of the upper flow field is relatively low, and needs to be further optimized and improved.

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