Semi-final grinding process and its equipment

Abstract

The invention discloses a semi-finish grinding process. The semi-finish grinding process comprises the following steps of: feeding materials into a weighing storehouse; feeding the materials into a roller press and performing roll pressing on the materials to form material cakes; feeding the material cakes into a V-shaped powder concentrator, and sorting the materials into coarse materials and fine materials; feeding the coarse materials into the weighing storehouse; after the fine materials enter a combined dynamic powder concentrator, sorting the fine materials into large-grained powder, coarse powder, medium coarse powder and fine powder; feeing the large-grained powder into the V-shaped powder concentrator; feeding the coarse powder and the medium coarse powder into an internal circulation ball mill and grinding the coarse powder and the medium coarse powder to prepare finished products; collecting the fine powder by a cyclone cylinder, feeding the fine powder into a dynamic powder concentrator, and sorting the fine powder into qualified and unqualified materials; collecting the qualified materials by a dust collector into a storehouse; and conveying the unqualified materials into the internal circulation ball mill by a material guide device and an inner screw conveyor, grinding the unqualified materials to prepare finished products which are then stored the storehouse. Equipment of the semi-finish grinding process comprises a raw material distribution station, a conveyor, a first elevator, a second elevator, the weighing storehouse, the V-shaped powder concentrator, the roller press, the internal circulation ball mill, a third elevator, the combined dynamic powder concentrator, the dynamic powder concentrator, the dust collector and a chute conveying device.

Description

technical field [0001] The invention relates to a cement grinding process equipment, in particular to a semi-final grinding process and equipment thereof. Background technique [0002] The main steps of the existing semi-final grinding process are: the material is first sent to the roller press by the conveyor, the material cake is formed after the material passes through the roller press, and the material cake is sent to the V-shaped powder separator through the elevator, The material powder sorted by the V-shaped powder classifier forms coarse powder and fine powder. The fine powder enters the ball mill for grinding and becomes the finished product. In the above process, because the particle size distribution of the materials entering the ball mill is relatively wide, it is not conducive to increasing the output, and the energy consumption is high; at the same time, due to the existence of qualified materials, over-grinding occurs, so not only the output is reduced, but a...

AI Technical Summary

Problems solved by technology

In the above process, because the particle size distribution of the materials entering the ball mill is relatively wide, it is not conducive to increasing the output, and the energy consumption is high; at the same time, due to the existence of qualified materials, over-grinding occurs, so not only the output is reduced, but also over-grinding produces There are too many powders below 3 microns, which will not help the improvement of cement strength.

Images