Cement semi-final powder milling vertical milling and ball milling combination system

Abstract

The invention discloses a cement semi-final powder milling vertical mill. Based on the traditional vertical mill, static blades 1, static blades 2, a rotor and a discharge pipe are separately arranged at the upper part of a vertical mill shell from outside to inside; the static blades 1 and the static blades 2 are separately fixed on an internal shell from outside to inside; the lower parts of the static blades 1 and the static blades 2 are separately connected with a discharge cone 1 and a discharge cone 2; a cone part of the discharge cone 1 is connected with a discharge port; a cone part of the discharge cone 2 is connected with a semi-finished product discharge port; the discharge pipe communicates with the discharge cone 1 after penetrating through the discharge cone 2 to form a mixing cavity; the rotor includes a series of movable blades distributed in the radial direction of the discharge pipe; and a space in the rotor communicates with an air outlet. The invention further discloses a combination system including the vertical mill. According to the combination system, multiple times of separation in the vertical mill can be realized to improve the powder milling efficiency of the vertical mill and the powder separation efficiency of a powder concentrator, and the fineness of semi-finished materials can be controlled to facilitate improvement of the cement quality.

Description

technical field [0001] The invention belongs to the technical field of cement grinding, and in particular relates to a vertical mill for semi-final cement grinding and a combined system with a ball mill. Background technique [0002] At present, cement grinding mainly adopts different grinding systems consisting of ball mill or roller press + ball mill. Compared with ball mills, vertical mills have high grinding efficiency, low power consumption (20% to 30% power saving compared with ball mills), large drying capacity, large particle size of materials allowed to enter the mill, simple grinding process, and small footprint , low civil construction cost, low noise, low wear, long life, easy operation and other advantages, has been widely used in grinding cement raw materials and coal powder, but for the production of cement has not been widely promoted, the main reason is that Whether the final grinding of cement can really achieve energy-saving effect, and the second is that...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing vertical mill as a semi-finish grinding with low efficiency and difficult control of the fineness of semi-finished materials produced, improve the separation efficiency of the powder classifier and cement quality, and provide a vertical mill for semi-finish grinding

Images