Circulating Grinding Cement Vertical Mill with Preheating Grinding Function

Abstract

The invention relates to a circulating grinding cement vertical mill with a preheating grinding function, which is used for grinding cement materials, wherein the circulating grinding cement vertical mill with a preheating grinding function comprises: a cylinder body with an accommodating space; a conveying device for It is used to convey cement materials; the crushing device is connected with the conveying device, and the crushing device is used to crush cement materials; the feeding pipe, the feeding port is connected with the crushing device, and the discharge port of the feeding pipe passes through the cylinder and is set in the accommodation space The material distributing device is arranged in the accommodating space. The material distributing device includes a curved mesh structure recessed downward and a material guide cone arranged at the top of the center of the curved mesh structure. The curved mesh structure is arranged at the outlet of the feeding pipe. The bottom of the feed port, and the top of the guide cone is located directly below the discharge port of the feed pipe. When the cement material is ground in the present invention, the cement material is firstly preheated to ensure that the cement material has a certain degree of brittleness during grinding, and its brittleness is better when it is ground, thereby improving the grinding efficiency.

Description

technical field [0001] The invention relates to a cement vertical mill, in particular to a circulating grinding cement vertical mill with a preheating grinding function. Background technique [0002] Currently, the cement industry grinds cement clinker widely using a separate ball mill, a ball mill and a roller press or a combination of a ball mill and a vertical mill. As we all know, ball mills have low grinding efficiency and high energy consumption. The pulverization theory, working principle and design structure adopted by traditional ball mills are the fundamental reasons for the extremely low energy utilization rate of ball mills. However, in view of the current situation of the industry, ball mills will not be completely eliminated, and will be widely and long-term present in cement grinding industrial systems at home and abroad. [0003] In order to improve the grinding efficiency in the ball mill grinding system and reduce energy consumption, pre-grinding technolog...

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned vertical mills are used for multi-stage screening and grinding of cement, slag and other materials, it is difficult to ensure the uniformity of the obtained cement, slag and other materials, and some materials are difficult to grind and separate.

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