Pellet iron ore concentrate fine grinding pelletizing system and process

Abstract

The invention relates to a pellet iron ore concentrate fine grinding pelletizing system and a pellet iron ore concentrate fine grinding pelletizing process. The pellet iron ore concentrate fine grinding pelletizing system comprises a feeding belt conveyer, a raw material ore bin, a vibrating funnel, a feed chute, a ball mill, a finished product ore groove, a quantitative feeder, a collection belt conveyer and a mixer, wherein the finished product ore groove, the quantitative feeder, the collection belt conveyer and the mixer are connected with the ball mill in sequence; the system is characterized in that the side face of the ball mill is connected with a hot air furnace through a hot air pipeline; a powder selector and a storage bin are arranged between the ball mill and the finished product ore groove; the powder selector is connected with a discharge port end, the raw material ore bin and the storage bin through conveying pipelines respectively; the upper part of the storage bin is provided with a high-efficiency dust remover; the high-efficiency dust remover is connected with an induced draught fan and a chimney; the storage bin is communicated with the finished product ore groove through an air chute; the upper part of the finished product ore groove is provided with a bin top dust remover. The pellet iron ore concentrate fine grinding pelletizing system has the advantages of simple process flow, low overhaul rate, capability of saving water resource and high pelletizing rate when being used for pelletizing.

Description

technical field [0001] The invention belongs to the technical field of pelletizing, and in particular relates to a fine grinding pelletizing system and technology of iron ore pellets. Background technique [0002] The iron ore powder used for pelletizing needs a certain fineness, and the iron ore concentrate purchased from the pellet plant often does not meet the fineness requirement. Therefore, it is necessary to carry out a fine grinding process for the iron ore concentrate. At present, the iron ore concentrate grinding adopts the wet grinding process, and the wet grinding process includes the following process: my country's mineral processing industry basically adopts a two-stage closed-circuit grinding process, and a ball mill and a spiral classifier form a closed-circuit grinding process. , The second-stage grinding circuit is composed of a second-stage ball mill, a pump pool and a hydrocyclone. Feed the iron ore concentrate slurry into the slurry concentration pool...

AI Technical Summary

Problems solved by technology

This grinding process has the following problems: 1) much equipment is required; 2) many process links; 3) many points of electricity consumption, high power consumption; 4) many failure points; 5) large water consumption and high water treatment costs ;6) The process plant occupies a large area; 7) The construction investment is high and the maintenance cost is high; 8) The process control operation is difficult

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