Pebble coal recycling device and method

Abstract

The invention provides a pebble coal recycling device and method, the pebble coal recycling device structurally comprises an outward transporting device, a sorting device and a material returning device, wherein the outward transporting device comprises a pebble coal collecting bin, the pebble coal collecting bin is located below a roller type coal mill, and a net-shaped separating bin is connected with a mechanical separating bin; the ball mill separating module is connected with an outlet of the mechanical separating bin; a building material collecting bin is connected with an outlet of the ball mill separating module, a collecting tube is connected with the ball mill separating module, a bag-type dust remover is arranged above a pulverized coal bin, a pulverized coal bin pump is connected with a discharging hole of the pulverized coal bin, and one end of a material returning tube is connected with the bottom of the pulverized coal bin pump; and the other end is connected with a coal dropping tube of a roller type coal mill. According to the invention, outward transportation, sorting and returning of pebble coal are realized, the technical problem of pebble coal recycling is solved, coal energy containing heat value in pebble coal is separated to the greatest extent through the ball mill separating module, and coal powder is added back to the coal dropping tube of the roller type coal mill so as to realize on-site utilization.

Description

technical field [0001] The invention relates to the technical field of recycling of ore resources, in particular to a recycling device and method for pebble coal. Background technique [0002] Pebble coal is the impurity, gangue or coal particles discharged during the operation of the roller mill. Pebble coal has a certain amount of calorific value and has a certain market value. However, due to technical and cost constraints, the utilization rate of pebble coal is not high. [0003] The utilization of pebble coal is roughly divided into three steps: external transportation, sorting, and return. First, the pebble coal is collected from multiple roller mills to one place for centralized processing; secondly, the pebble coal is sorted so that Make the best use of each; finally, the sorted coal, gangue and impurities are transported to the subsequent process to achieve secondary utilization. However, at this stage, the transportation, sorting and returning of pebble coal are...

AI Technical Summary

Problems solved by technology

However, at this stage, the transportation, sorting and returning of pebble coal are not carried out at the same place, the process is scattered, and the recycling in the factory cannot be realized. At present, there is no set of devices that can completely realize the above three steps, so it greatly limits Pebble coal is recycled in the factory

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