Crushing device for sorting gangues and sorting method

Abstract

The invention relates to a crushing device for sorting gangues and a sorting method. The crushing device is structurally characterized in that an outer cover is fixed on a support, a feed port is formed in the top of the outer cover, a discharge port is formed in the bottom of the outer cover, and the middle of the outer cover is provided with a vortexing bin; a material divider is arranged in the feed port and the vortexing bin, the upper part of the material divider is of an umbrella-shaped structure, the top of the material divider is provided with a feeding hole, the middle of the material divider is provided with a storage bin of the gangues, and a material throwing disc is arranged below the material divider; a plurality of guide plates are respectively installed below the umbrella-shaped structure of the material divider and are fixed on the outer cover. The method provided by the invention comprises the steps of throwing the gangues into the sorting crushing device, then selectively crushing the gangues in a self-collision manner, and sieving the crushed gangues. The crushing device and the sorting method provided by the invention have the characteristics that the coal components in the gangues are selectively crushed, the integrality of gangue components is kept, the sorting requirement is met, the sorting efficiency is high, the use value of the sorted gangue is high, the process is simple, the energy is saved, the emission amount is reduced, the cost of investment is low, and the production capacity is high.

Description

technical field [0001] The invention belongs to the field of solid waste treatment and resource utilization equipment, and in particular relates to a crushing device and a sorting method for sorting coal gangue, in particular to sorting coal gangue into components with higher coal content after crushing. points, in order to realize the resource utilization of coal gangue. Background technique [0002] With the continuous development of the coal industry, the production of coal gangue is increasing day by day. Coal gangue is calculated as 15% of the raw coal output. At present, the annual increase of coal gangue is at least 340 million tons. The accumulated coal gangue has exceeded 6.5 billion tons over the years, covering an area of ​​900,000. More than mu, and continue to increase, resulting in a huge waste of resources and serious pollution of the environment. Factors such as low calorific value of coal gangue, partial weathering, disintegration, and poor particle gradati...

AI Technical Summary

Problems solved by technology

However, due to their own limitations, these process equipment cannot meet the requirements of coal gangue separation.

The separation density of dense medium shallow tank is generally 1.65g/cm 3 ~1.8g/cm 3 Between, it is difficult to exceed 1.8g/cm 3 , cannot meet the higher separation density requirements; the dynamic screen jig can meet

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